title
MERN Stack Full Course 2023 | Complete MERN Stack Developer Course | MERN Stack | Simplilearn
description
🔥 IITM Pravartak Professional Certificate Program In Full Stack Development - MERN (India Only): https://www.simplilearn.com/full-stack-developer-course-and-certification-iitm-pravartak?utm_campaign=SCE-FullstackIITM&utm_medium=DescriptionFF&utm_source=youtube
🔥 Post Graduate Program In Full Stack Web Development By Simplilearn: https://www.simplilearn.com/pgp-full-stack-web-development-certification-training-course?utm_campaign=17FebMERNStackFullCourse&utm_medium=DescriptionFirstFold&utm_source=youtube
🔥Caltech Coding Bootcamp (US Only): https://www.simplilearn.com/coding-bootcamp?utm_campaign=17FebMERNStackFullCourse&utm_medium=DescriptionFirstFold&utm_source=youtube
In this Full Course on MERN Stack Full Course 2023,we will discuss complete MERN stack development, starting from the basics to the advanced topics. We will begin this entire course With React js. We will cover topics like Components, props, state, and methods in React and finish it by creating a portfolio project using react JS. Next, we will cover node js and topics like NPM, REST API, Node.js Authentication With JWT, and many more topics. Once we are done with node, we will learn Express js. In express, we will learn about methods, Error handling, and how to connect the server to the client. Next, we will start with Mongodb and topics like Data Modeling, operators, Projection, indexing, and Aggregation in MongoDB. Toward the end of this Full Course, we will also cover interview questions on these four technologies to make you interview-ready.
00:00:00 - MERN Stack Full Course 2023
00:02:15 - What is Full Stack
00:08:45 - MERN VS MEAN
00:14:55 - React JS Basics
01:04:08 - React Js Portfolio Project
02:31:05 - 5 Front-End skills to land a job
02:36:52 - Node JS
05:57:38 - Express js
07:34:05 - Backend development Explained in 10 min
07:39:49 - What is MongoDB
08:01:14 - MongoDB Data Modeling
08:35:56 - Projection in MongoDB
09:12:40 - Indexing in MongoDB
09:41:53 - MongoDB Aggregation
10:24:13 - React JS Interview Questions and answers
10:30:36 - Node js Interview Questions and answers
10:59:57 - MongoDB Interview Questions and answers
⏩ Check out the Full Stack tutorial videos: https://youtube.com/playlist?list=PLEiEAq2VkUULCC3eEATL4zzuapTjmo1Z_
âś…Subscribe to our Channel to learn more about the top Technologies: https://bit.ly/2VT4WtH
#MERNStack #MERNStackWebDevelopment #WhatIsMERNStack #MERNStackFullCourse #FullStackWebDevelopment FullStackDeveloper #FullStackDeveloperCourse #WhatIsFullStack #WhatIsFullStackWebDevelopment #FullStackDeveloperTutorial#Simplilearn
🔥 Free Full Stack Java Development Course for Beginners with completion certificate: https://www.simplilearn.com/free-full-stack-java-developer-course-skillup?utm_campaign=17FebMERNStackFullCourse&utm_medium=Description&utm_source=youtube
➡️ About Post Graduate Program In Full Stack Web Development
This program will give you the foundation for building full-stack web apps using the Java programming language. You'll begin with the basics of JavaScript, and then venture into some of the more advanced concepts like Angular, Spring Boot, Hibernate, JSPs, and MVC. Now is the perfect time to get started on your career as a full-stack web developer!
âś… Key Features
- Caltech CTME Post Graduate Certificate
- Enrolment in Simplilearn’s JobAssist
- Receive up to 25 CEUs from Caltech CTME
- Simplilearn's JobAssist helps you get noticed by top hiring companies
- Attend Masterclasses from Caltech CTME instructors
- Live virtual classes led by industry experts, hands-on projects and integrated labs
- Online Convocation by Caltech CTME Program Director
- 20 lesson-end and 5 phase-end projects
- Capstone Project in 4 domains
- Caltech CTME Circle Membership
- Build your own portfolio on GitHub
âś… Skills Covered
- Agile
- JAVA
- Hibernate and JPA
- Spring Core 50
- DevOps
- HTML5 and CSS3
- AWS
- JavaScript ES6
- Servlets
- SOAP and REST
- JSP
👉 Learn More At: https://www.simplilearn.com/pgp-full-stack-web-development-certification-training-course?utm_campaign=17FebMERNStackFullCourse&utm_medium=Description&utm_source=youtube
🔥Caltech Coding Bootcamp (US Only): https://www.simplilearn.com/coding-bootcamp?utm_campaign=17FebMERNStackFullCourse&utm_medium=Description&utm_source=youtube
🔥🔥 Interested in Attending Live Classes? Call Us: IN - 18002127688 / US - +18445327688
detail
{'title': 'MERN Stack Full Course 2023 | Complete MERN Stack Developer Course | MERN Stack | Simplilearn', 'heatmap': [{'end': 2531.247, 'start': 1258.314, 'weight': 0.974}], 'summary': "Course covers mern stack 2023, mean vs. mern stacks, react, node.js, expressjs, mongodb, interview prep, and industry trends, with a mernstack developer's average salary in the us being $120,000 per annum, and up to $200,000 per annum. it provides comprehensive insights into front-end and back-end development, api creation, mongodb fundamentals, query operators, indexing, data relationships, and node.js interview questions.", 'chapters': [{'end': 1399.002, 'segs': [{'end': 1272.262, 'src': 'embed', 'start': 1226.132, 'weight': 0, 'content': [{'end': 1228.394, 'text': 'The last feature of React is debugging.', 'start': 1226.132, 'duration': 2.262}, {'end': 1233.538, 'text': 'React applications are easy to debug thanks to the large and active developer community.', 'start': 1228.654, 'duration': 4.884}, {'end': 1236.68, 'text': 'You can practically debug React codes within your browser.', 'start': 1233.738, 'duration': 2.942}, {'end': 1240.523, 'text': 'Now notice the small React extension icon at the top right corner.', 'start': 1236.96, 'duration': 3.563}, {'end': 1245.686, 'text': 'This developer tool allows the user to inspect the code and also easily debug it.', 'start': 1240.823, 'duration': 4.863}, {'end': 1249.189, 'text': "Moving on, let's learn about the building blocks of React.", 'start': 1246.027, 'duration': 3.162}, {'end': 1255.352, 'text': 'Components, state, and props are the essential concepts that one should know before implementing React.', 'start': 1249.409, 'duration': 5.943}, {'end': 1257.974, 'text': 'They are the foundation on which React is built.', 'start': 1255.592, 'duration': 2.382}, {'end': 1263.877, 'text': 'Now what exactly are React components? Components are the building blocks of any React application.', 'start': 1258.314, 'duration': 5.563}, {'end': 1272.262, 'text': 'React divides the user interface into multiple components wherein each component defines how a particular element is viewed in the application.', 'start': 1264.217, 'duration': 8.045}], 'summary': 'React debugging made easy with active community support and browser-based code inspection.', 'duration': 46.13, 'max_score': 1226.132, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE1226132.jpg'}], 'start': 0.349, 'title': 'Mernstack 2023 and mean vs. mern stacks', 'summary': 'Covers a full course on mernstack for 2023, including react, node.js, expressjs, mongodb, and interview preparation, with the average salary of a mernstack developer in the us being $120,000 per annum and up to $200,000 per annum. it also explains the concepts of technology stack, mean stack, and mern stack, highlighting their components, differences, and benefits, with the mean stack having a better learning curve and mern stack becoming increasingly popular in the development market. additionally, it compares mean and mern stacks, emphasizing that mean is suitable for enterprise-level projects, while mern is preferred for faster development of smaller applications, and concludes that the choice of stack depends on the front-end framework and tools, with mean being preferable for angular and mern for react.', 'chapters': [{'end': 272.076, 'start': 0.349, 'title': 'Full course on mernstack 2023', 'summary': 'Covers a full course on mernstack for 2023, including react, node.js, expressjs, mongodb, and interview preparation, with the average salary of a mernstack developer in the us being $120,000 per annum and up to $200,000 per annum.', 'duration': 271.727, 'highlights': ['Average Salary of MernStack Developer in the US The average salary of a MernStack developer in the US is $120,000 per annum, and it can go up to $200,000 per annum.', 'Content Covered in the Full Course The full course covers React, Node.js, ExpressJS, MongoDB, and interview preparation, including basic and advanced topics such as components, props, states, methods in React, NPM, REST API, authentication with JWT, error handling in ExpressJS, data modeling, operators, projection, indexing, aggregation in MongoDB, and interview questions on each technology.', 'Understanding the Full Stack The full stack comprises the front-end (user interface), back-end (data access software), and database, forming an integral part of MernStack development.']}, {'end': 540.18, 'start': 272.897, 'title': 'Front-end and back-end web development', 'summary': 'Discusses the role of html, css, javascript, front-end frameworks, and libraries in creating interactive web pages, and then delves into backend development, backend languages, and database management systems. it also highlights the full-stack development courses offered by simply learn.', 'duration': 267.283, 'highlights': ['HTML defines website content, CSS styles web components, and JavaScript enhances user interaction with web pages.', 'React, Angular, Vue, jQuery, and Bootstrap are popular front-end frameworks and libraries, with React being the preferred choice among developers.', 'Backend development involves server-side management of databases, data retrieval using queries and APIs, and ensuring data consistency.', 'Node, ExpressJS, Python (Django, Flask), Java (Spring, Java Server Faces), C#, PHP, Perl, and Ruby are commonly used backend languages and frameworks.', 'Commonly used database management systems include MySQL, PostgreSQL, Microsoft SQL Server, Oracle Database, and MongoDB.', 'Simply Learn offers full-stack development courses including Full-stack Java Developer Masters program, Postgraduate Program in Full Stack Web Development, and Full Stack Web Developer Mean Stack Masters Program.']}, {'end': 795.785, 'start': 540.18, 'title': 'Understanding mean and mern stacks', 'summary': 'Explains the concepts of technology stack, mean stack, and mern stack, highlighting their components, differences, and benefits, with the mean stack having a better learning curve and mern stack becoming increasingly popular in the development market.', 'duration': 255.605, 'highlights': ['Mean stack is defined as a collection of JavaScript technologies that assist in building complex websites, providing quick and easy development of web and mobile applications. Mean stack comprises MongoDB, ExpressJS, AngularJS, and NodeJS, offering quick and easy development of web and mobile applications.', 'Mern stack is also an abbreviation for MongoDB, ExpressJS, ReactJS, and NodeJS, providing quick and easy development of web applications and becoming increasingly popular in the development market. Mern stack, an abbreviation for MongoDB, ExpressJS, ReactJS, and NodeJS, ensures a smooth development process and is becoming increasingly popular in the development market.', 'The differences between MernStack and MeanStack include the use of Angular in MeanStack and ReactJS in MernStack, as well as the use of TypeScript in MeanStack and JavaScript and JSX in MernStack. MeanStack uses Angular and TypeScript, facilitating bidirectional flow of data, while MernStack uses ReactJS and JavaScript/JSX, enabling unidirectional flow of data.', 'Mean stack has a better learning curve. Mean stack is known for having a better learning curve, making it more accessible for developers to learn and work with.']}, {'end': 1054.634, 'start': 796.045, 'title': 'Choosing between mean and mern stack', 'summary': 'Compares mean and mern stacks, highlighting that companies such as accenture, raindrop, and vungle use mean, while uber eats, instagram, and walmart use mern. it also emphasizes that mean is suitable for enterprise-level projects, while mern is preferred for faster development of smaller applications. the section concludes that the choice of stack depends on the front-end framework and tools, with mean being preferable for angular and mern for react.', 'duration': 258.589, 'highlights': ['Companies like Accenture, Raindrop, Vungle use MEAN stack, while Uber Eats, Instagram, Walmart use MERN stack. This quantifiable data showcases the usage of MEAN and MERN stacks by prominent companies, providing a clear comparison between the two.', 'MEAN stack is good for large-scale applications, and MERN stack is used for faster development of smaller applications. This statement provides a clear distinction between the suitable use cases for MEAN and MERN stacks, contributing to the comparison of the two.', 'Enterprise-level projects require MEAN over MERN, and MERN makes rendering the user interface simpler. The quantifiable data and comparison of the capabilities of MEAN and MERN stacks contribute to understanding their respective strengths and use cases.', 'Choosing the right stack for your software process depends on the front-end framework or related tools that you would like to use. This highlights the key factor influencing the choice between MEAN and MERN stacks, providing guidance for developers and teams.']}, {'end': 1399.002, 'start': 1055.114, 'title': 'React: virtual dom, performance, and extensions', 'summary': "Discusses react's features such as virtual dom, performance impact, one-way data binding, extensions like react native and flux, and the impact of react on the it industry, including the salary insights for react developers in the us and india.", 'duration': 343.888, 'highlights': ['React developers in the United States earn an average salary of US$91,000. The average salary for a React developer in the United States is a whopping US$91,000.', 'React developers in India earn an average salary of 7.25 lakhs per annum. The average salary for a React developer in India is 7.25 lakhs per annum.', 'Virtual DOM impacts the speed of web applications and makes a big difference in terms of speed. React creates a virtual DOM that is the exact copy of the real DOM, and it only updates the objects on the virtual DOM that have changed, making a big difference in terms of speed.', 'React Native is used for developing mobile applications, and popular applications like Facebook, Instagram, Pinterest, Skype use React Native. React Native is used for developing mobile applications, and popular applications like Facebook, Instagram, Pinterest, Skype use React Native.', 'Flux is the application architecture used by Facebook and implements a unidirectional flow that makes it easier to understand the application. Flux is the application architecture used by Facebook and implements a unidirectional flow that makes it easier to understand the application.']}], 'duration': 1398.653, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE349.jpg', 'highlights': ['The full course covers React, Node.js, ExpressJS, MongoDB, and interview preparation, including basic and advanced topics.', 'Mern stack ensures a smooth development process and is becoming increasingly popular in the development market.', 'MEAN stack is good for large-scale applications, and MERN stack is used for faster development of smaller applications.', 'React creates a virtual DOM that is the exact copy of the real DOM, and it only updates the objects on the virtual DOM that have changed, making a big difference in terms of speed.', 'Choosing the right stack for your software process depends on the front-end framework or related tools that you would like to use.']}, {'end': 3848.025, 'segs': [{'end': 1472.585, 'src': 'embed', 'start': 1441.571, 'weight': 13, 'content': [{'end': 1443.832, 'text': "So, let's begin by installing Node.js.", 'start': 1441.571, 'duration': 2.261}, {'end': 1448.434, 'text': 'We can head to the official Node.js website, say download.', 'start': 1444.212, 'duration': 4.222}, {'end': 1452.41, 'text': 'Node.js So here you can see the Windows installer.', 'start': 1449.528, 'duration': 2.882}, {'end': 1456.813, 'text': 'Depending on your system, you can either download the 32-bit version or the 64-bit version.', 'start': 1452.53, 'duration': 4.283}, {'end': 1459.875, 'text': "So I'm going to go ahead and click on the 64-bit version.", 'start': 1457.113, 'duration': 2.762}, {'end': 1463.738, 'text': "Since it's already installed on my system, I'm not again installing Node.", 'start': 1460.296, 'duration': 3.442}, {'end': 1466.66, 'text': 'You can follow the installation guidelines and download it.', 'start': 1463.938, 'duration': 2.722}, {'end': 1472.585, 'text': "Once you're done with Node installation, you can go ahead and download a text editor of your choice.", 'start': 1467.16, 'duration': 5.425}], 'summary': 'Install node.js by downloading the 64-bit version from official website, then proceed with text editor download.', 'duration': 31.014, 'max_score': 1441.571, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE1441571.jpg'}, {'end': 1513.25, 'src': 'embed', 'start': 1484.215, 'weight': 3, 'content': [{'end': 1490.461, 'text': "Once you're done with the installation of both Node and your text editor, you can start creating your first React application.", 'start': 1484.215, 'duration': 6.246}, {'end': 1492.442, 'text': "So for that, let's create a folder.", 'start': 1490.641, 'duration': 1.801}, {'end': 1497.104, 'text': "I'm creating it on my desktop while you can create it in any of your drives.", 'start': 1493.223, 'duration': 3.881}, {'end': 1500.246, 'text': "Let's call it first react.", 'start': 1497.425, 'duration': 2.821}, {'end': 1501.966, 'text': 'Now open your command prompt.', 'start': 1500.586, 'duration': 1.38}, {'end': 1505.748, 'text': 'Now you can type in the path for the folder that you just created.', 'start': 1502.426, 'duration': 3.322}, {'end': 1513.25, 'text': 'So say cd users first react.', 'start': 1506.208, 'duration': 7.042}], 'summary': 'Install node and text editor, create folder, and start react app.', 'duration': 29.035, 'max_score': 1484.215, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE1484215.jpg'}, {'end': 1700.655, 'src': 'embed', 'start': 1674.995, 'weight': 14, 'content': [{'end': 1679.697, 'text': 'First, we have the stateless functional components and then we have the stateful class components.', 'start': 1674.995, 'duration': 4.702}, {'end': 1684.701, 'text': 'Now functional components are typical JavaScript functions that return HTML.', 'start': 1680.077, 'duration': 4.624}, {'end': 1688.384, 'text': 'Now they can be contained in a .js or a .jsx file.', 'start': 1684.941, 'duration': 3.443}, {'end': 1691.827, 'text': 'Coming to class components, these are regular ES6 classes.', 'start': 1688.704, 'duration': 3.123}, {'end': 1697.032, 'text': "However, it's mandatory that they contain a render method that in turn returns HTML.", 'start': 1692.147, 'duration': 4.885}, {'end': 1700.655, 'text': 'They can also be contained in .js or a .jsx file.', 'start': 1697.272, 'duration': 3.383}], 'summary': 'Comparison of stateless functional and stateful class components in javascript.', 'duration': 25.66, 'max_score': 1674.995, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE1674995.jpg'}, {'end': 2067.01, 'src': 'embed', 'start': 2037.25, 'weight': 10, 'content': [{'end': 2039.652, 'text': 'Let me give it another name, say class comp one.', 'start': 2037.25, 'duration': 2.402}, {'end': 2044.096, 'text': "And the message that I want to display is, hey, I'm another class.", 'start': 2040.113, 'duration': 3.983}, {'end': 2044.697, 'text': 'All right.', 'start': 2044.376, 'duration': 0.321}, {'end': 2047.659, 'text': "So when I'm exporting it, I don't want default.", 'start': 2044.817, 'duration': 2.842}, {'end': 2050.4, 'text': 'So let me take it off and say export here.', 'start': 2048.018, 'duration': 2.382}, {'end': 2051.002, 'text': 'All right.', 'start': 2050.661, 'duration': 0.341}, {'end': 2055.704, 'text': 'In my app.js, while importing it, I want to import both the classes.', 'start': 2051.601, 'duration': 4.103}, {'end': 2058.065, 'text': "So I'll include them within curly braces here.", 'start': 2055.944, 'duration': 2.121}, {'end': 2061.266, 'text': 'I say class comp, class comp1.', 'start': 2058.324, 'duration': 2.942}, {'end': 2064.609, 'text': 'And then again, I define it here, class comp1.', 'start': 2061.487, 'duration': 3.122}, {'end': 2067.01, 'text': "Let's compile it and run it.", 'start': 2064.829, 'duration': 2.181}], 'summary': 'Demonstrating importing and exporting classes in app.js.', 'duration': 29.76, 'max_score': 2037.25, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE2037250.jpg'}, {'end': 2385.699, 'src': 'embed', 'start': 2330.62, 'weight': 5, 'content': [{'end': 2339.286, 'text': "Okay, to learn how higher-order components work, we'll have to pass counter.js and click.js as parameters to give birth to an entire new component.", 'start': 2330.62, 'duration': 8.666}, {'end': 2343.589, 'text': "So for that, let's go ahead and create another component for our HOC.", 'start': 2339.406, 'duration': 4.183}, {'end': 2347.452, 'text': "Let's call it higher-order.js.", 'start': 2343.789, 'duration': 3.663}, {'end': 2351.714, 'text': 'Okay, so I say import React from React.', 'start': 2347.832, 'duration': 3.882}, {'end': 2358.059, 'text': 'After that, I say const updatedComponent equals originalComponent.', 'start': 2351.975, 'duration': 6.084}, {'end': 2370.247, 'text': "that's going to be an arrow function again and within curly braces I define my class, let us class say new component extends React dot component.", 'start': 2358.703, 'duration': 11.544}, {'end': 2381.734, 'text': "Inside. let's define a render method that returns the original component with modification, that is, I want to type the user.", 'start': 2370.547, 'duration': 11.187}, {'end': 2385.699, 'text': 'I want to append the user before the actual message is displayed.', 'start': 2381.734, 'duration': 3.965}], 'summary': 'Creating a higher-order component to modify original component by appending user before message.', 'duration': 55.079, 'max_score': 2330.62, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE2330620.jpg'}, {'end': 2637.605, 'src': 'embed', 'start': 2608.797, 'weight': 9, 'content': [{'end': 2614.618, 'text': "Now within the arrow function, I'll make use of the setState function to set the state of my property.", 'start': 2608.797, 'duration': 5.821}, {'end': 2617.579, 'text': 'However, I do not change the name.', 'start': 2614.878, 'duration': 2.701}, {'end': 2619.78, 'text': 'I keep it simply done itself.', 'start': 2617.899, 'duration': 1.881}, {'end': 2627.081, 'text': "Moving on, let's import pure component and the regular component into our parent component and then pass name as a property.", 'start': 2620.22, 'duration': 6.861}, {'end': 2637.605, 'text': 'So to do that, first import pure comp from pure component and then I say import regular comp from regular comp.js.', 'start': 2627.301, 'duration': 10.304}], 'summary': 'Using setstate function within arrow function to set property state, importing pure and regular components to parent component.', 'duration': 28.808, 'max_score': 2608.797, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE2608797.jpg'}, {'end': 2744.521, 'src': 'embed', 'start': 2716.661, 'weight': 12, 'content': [{'end': 2721.284, 'text': "So let's go back to our browser and inspect it in our console.", 'start': 2716.661, 'duration': 4.623}, {'end': 2726.248, 'text': 'First, the parent component gets rendered, then the regular component, and then the pure component.', 'start': 2721.805, 'duration': 4.443}, {'end': 2731.612, 'text': 'After that, for every 3 seconds, only the parent component and the regular component is rendered.', 'start': 2726.548, 'duration': 5.064}, {'end': 2735.835, 'text': 'For the same state and prop, the pure component is not re-rendered.', 'start': 2731.752, 'duration': 4.083}, {'end': 2741.339, 'text': 'So in conclusion, pure components optimize React codes and also improves performance.', 'start': 2735.995, 'duration': 5.344}, {'end': 2744.521, 'text': 'So coming to the last topic, component lifecycle.', 'start': 2741.779, 'duration': 2.742}], 'summary': 'Pure components optimize react codes, improve performance, and do not re-render for the same state and prop.', 'duration': 27.86, 'max_score': 2716.661, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE2716661.jpg'}, {'end': 3336.553, 'src': 'embed', 'start': 3299.913, 'weight': 7, 'content': [{'end': 3304.958, 'text': 'Props can be used in functional and class components, while state is restricted to class components.', 'start': 3299.913, 'duration': 5.045}, {'end': 3310.023, 'text': 'Props are set by the parent component, while a state is generally updated by event handlers.', 'start': 3305.278, 'duration': 4.745}, {'end': 3315.588, 'text': "Now that we've learnt all about state, let's go ahead and build an application to see the working of state.", 'start': 3310.363, 'duration': 5.225}, {'end': 3324.527, 'text': "Alright, so in my code editor, that is VS Code, I've created my application, say state, and here in my source folder, I have my app.js file.", 'start': 3315.788, 'duration': 8.739}, {'end': 3329.568, 'text': "Now here, I'm going to get rid of all the unnecessary code that I'm not going to be using.", 'start': 3324.884, 'duration': 4.684}, {'end': 3336.553, 'text': 'Also, I suggest you go through the React installation on Windows video to help you get started with creating your first application.', 'start': 3329.948, 'duration': 6.605}], 'summary': 'Props in both functional and class components, state limited to class components. learning state and building application in vs code.', 'duration': 36.64, 'max_score': 3299.913, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE3299913.jpg'}, {'end': 3404.481, 'src': 'embed', 'start': 3371.124, 'weight': 0, 'content': [{'end': 3373.046, 'text': 'And if you look at the browser, we have welcome.', 'start': 3371.124, 'duration': 1.922}, {'end': 3375.027, 'text': "Now let's beautify our code.", 'start': 3373.366, 'duration': 1.661}, {'end': 3376.889, 'text': "To do that, let's add some styling.", 'start': 3375.207, 'duration': 1.682}, {'end': 3381.292, 'text': 'So here in my app.js class component, I say styles.', 'start': 3377.249, 'duration': 4.043}, {'end': 3399.099, 'text': 'equals and I say font style and I set it to say bold and I say color say teal and here in my h1 tag I say style equals this dot styles.', 'start': 3382.012, 'duration': 17.087}, {'end': 3404.481, 'text': "So let me save it and if we look at the browser now we have welcome in teal and it's bold.", 'start': 3399.539, 'duration': 4.942}], 'summary': "Styling added to app.js class component, making 'welcome' teal and bold.", 'duration': 33.357, 'max_score': 3371.124, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE3371124.jpg'}, {'end': 3460.159, 'src': 'embed', 'start': 3430.567, 'weight': 2, 'content': [{'end': 3434.889, 'text': 'Once the user clicks on the subscribe button, we instruct them to click on the bell icon.', 'start': 3430.567, 'duration': 4.322}, {'end': 3437.25, 'text': 'And finally, we display a thank you message.', 'start': 3435.189, 'duration': 2.061}, {'end': 3440.131, 'text': "Now to do all of this, we're going to make use of state.", 'start': 3437.61, 'duration': 2.521}, {'end': 3444.472, 'text': 'And as mentioned earlier, we initialize the state object in a constructor.', 'start': 3440.351, 'duration': 4.121}, {'end': 3449.154, 'text': "So let's use the snippet rconst to create a constructor.", 'start': 3444.952, 'duration': 4.202}, {'end': 3452.775, 'text': 'Now in the state object, we initialize a property.', 'start': 3449.474, 'duration': 3.301}, {'end': 3460.159, 'text': "Let's call it message and we display a message saying subscribe to simply learn.", 'start': 3453.216, 'duration': 6.943}], 'summary': 'Instruct user to subscribe and display thank you message using state and constructor.', 'duration': 29.592, 'max_score': 3430.567, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE3430567.jpg'}, {'end': 3531.383, 'src': 'embed', 'start': 3503.262, 'weight': 6, 'content': [{'end': 3521.256, 'text': "so i'll just copy the same styles that i've added here and i'll paste them here and instead of bold i make it italic and i change the color to say purple and again in my h3 tag I define style and initialize it with this.styles.", 'start': 3503.262, 'duration': 17.994}, {'end': 3522.577, 'text': 'So let me save it.', 'start': 3521.676, 'duration': 0.901}, {'end': 3526.34, 'text': "And now if you look at the browser, it's in italic and it's in purple.", 'start': 3522.877, 'duration': 3.463}, {'end': 3531.383, 'text': "Okay So moving ahead, let's create a button that reads subscribe.", 'start': 3527.18, 'duration': 4.203}], 'summary': "Styling changes made to text include making it italic and changing color to purple, and a button reading 'subscribe' is created.", 'duration': 28.121, 'max_score': 3503.262, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE3503262.jpg'}], 'start': 1399.363, 'title': 'React components and javascript modules', 'summary': 'Covers react installation, component basics, and career opportunities, javascript module exports, higher-order components, component creation, reusability, optimization, state management, and performance optimization, emphasizing practical demonstrations and implementation details.', 'chapters': [{'end': 1900.807, 'start': 1399.363, 'title': 'React installation and component basics', 'summary': 'Highlights the rapid growth of react compared to other frameworks, the process of installing react on windows, and provides a detailed overview of react components, including types, usage, and practical demonstration, which can lead to career opportunities in front-end development.', 'duration': 501.444, 'highlights': ["React's rapid growth compared to other frameworks According to Google Trends, React has had a better growth scale compared to Angular and Vue, indicating its strong adoption by front-end developers.", 'Companies using React Facebook, Instagram, Netflix, Dropbox, and WhatsApp are among the companies that use React, showcasing its widespread industry adoption.', 'Process of installing React on Windows The process involves installing Node.js and a text editor like VS Code, followed by setting up the development environment and creating a React application.', 'Overview of React components The detailed overview covers topics like component types (stateless functional components and stateful class components), nesting components, and their role as building blocks of a React application.', 'Practical demonstration of creating React components The practical demonstration includes creating and nesting functional and class components within the main app.js component, showcasing the process of rendering and displaying different messages.']}, {'end': 2120.916, 'start': 1900.807, 'title': 'Javascript module exports', 'summary': 'Explains the usage of export and import in javascript modules, covering default export, named export, renaming while importing, and selectively importing classes. it also briefly mentions higher-order components and their role in facilitating the reusability of component logic.', 'duration': 220.109, 'highlights': ['Default export is used to export just one object, be it a function, a class, a variable from the file, and there can only be one default export per file. Default export in JavaScript modules allows exporting a single object, such as a function or a class, with a restriction of one default export per file.', 'Named export can be used to export multiple objects, be it functions, classes, etc. from a file, and there can be several named exports from a single file. Named export enables exporting multiple objects, like functions or classes, from a file, with the flexibility of having multiple named exports in a single file.', 'Selective import of classes is demonstrated by importing specific classes from a file using named export, showcasing the ability to choose which classes to import. The transcript showcases the ability to selectively import classes from a file using named export, demonstrating the flexibility to import specific classes as needed.', 'Higher-order components are functions that take in a component and return a new component, aiming to facilitate the reusability of component logic. The chapter briefly mentions higher-order components as functions that enhance the reusability of component logic by taking in a component and returning a new one.']}, {'end': 2461.551, 'start': 2121.176, 'title': 'React component creation and higher order components', 'summary': "Discusses the creation of react components 'click.js' and 'counter.js', demonstrating the increment of values on button click and mouse hover, while also explaining the concept of higher order components and its implementation in 'higher-order.js'. it also showcases the use of state and event handling in react components.", 'duration': 340.375, 'highlights': ["Creation of React components 'click.js' and 'counter.js' with state and event handling The transcript details the creation of two React components, 'click.js' and 'counter.js', with state management and event handling, showcasing the increment of values on button click and mouse hover.", "Implementation of Higher Order Components and its usage in 'higher-order.js' The chapter explains the concept of Higher Order Components and its implementation in 'higher-order.js', demonstrating the modification of the original component by appending the user's name before the displayed message."]}, {'end': 3315.588, 'start': 2461.551, 'title': 'React component reusability and optimization', 'summary': 'Explains how react implements reusability of components, the concept of pure components, and the component lifecycle, emphasizing the optimization of react codes and performance, and also introduces the concept of props, highlighting their role in passing data and event handlers to children components.', 'duration': 854.037, 'highlights': ['Pure components avoid unnecessary re-renders by ensuring a shallow comparison of states and props, optimizing React codes and performance A pure component avoids unnecessary re-renders by ensuring a shallow comparison of states and props, optimizing React codes and performance.', 'Component lifecycle is divided into mounting, updation, and unmounting phases, with methods like componentWillMount, componentDidMount, componentWillReceiveProps, setState, shouldComponentUpdate, componentWillUpdate, componentDidUpdate, and componentWillUnmount being invoked at different stages. The component lifecycle is divided into mounting, updation, and unmounting phases, with methods like componentWillMount, componentDidMount, componentWillReceiveProps, setState, shouldComponentUpdate, componentWillUpdate, componentDidUpdate, and componentWillUnmount being invoked at different stages.', 'Props allow the user to pass arguments or data to components, making components more dynamic, and are read-only and cannot be changed. Props allow the user to pass arguments or data to components, making components more dynamic, and are read-only and cannot be changed.']}, {'end': 3848.025, 'start': 3315.788, 'title': 'Creating react components and state', 'summary': 'Covers creating class components, adding styles, using state, updating state with event handlers, and changing images on click, while emphasizing the importance of following jsx conventions, initializing state in a constructor, and using setstate method to update state.', 'duration': 532.237, 'highlights': ['The setState method enqueues all the updates made to the component state and instructs React to re-render the component and its children with the updated state, ensuring efficient state management.', 'Initializing the state object in a constructor is a crucial step in using state in React components, promoting organized and structured state management.', 'Emphasizing the importance of following JSX conventions and enclosing all HTML tags within a div tag showcases best practices for writing readable and maintainable React code.', 'Creating class components and using the snippet RCE to generate class components in VS Code demonstrates efficient ways to structure and organize React components for better code management.', 'The importance of using event handlers, such as onClick, to trigger state updates and dynamically change content based on user interaction is highlighted, showcasing interactive and responsive user interfaces.', 'Adding styles to components and dynamically updating styles using setState method demonstrates the flexibility and versatility of managing styles in React components, enhancing the visual appeal and user experience of the application.']}], 'duration': 2448.662, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE1399363.jpg', 'highlights': ["React's rapid growth compared to other frameworks According to Google Trends, React has had a better growth scale compared to Angular and Vue, indicating its strong adoption by front-end developers.", 'Companies using React Facebook, Instagram, Netflix, Dropbox, and WhatsApp are among the companies that use React, showcasing its widespread industry adoption.', 'Process of installing React on Windows The process involves installing Node.js and a text editor like VS Code, followed by setting up the development environment and creating a React application.', 'Default export is used to export just one object, be it a function, a class, a variable from the file, and there can only be one default export per file. Default export in JavaScript modules allows exporting a single object, such as a function or a class, with a restriction of one default export per file.', 'Named export can be used to export multiple objects, be it functions, classes, etc. from a file, and there can be several named exports from a single file. Named export enables exporting multiple objects, like functions or classes, from a file, with the flexibility of having multiple named exports in a single file.', 'Higher-order components are functions that take in a component and return a new component, aiming to facilitate the reusability of component logic.', "Creation of React components 'click.js' and 'counter.js' with state and event handling The transcript details the creation of two React components, 'click.js' and 'counter.js', with state management and event handling, showcasing the increment of values on button click and mouse hover.", 'Pure components avoid unnecessary re-renders by ensuring a shallow comparison of states and props, optimizing React codes and performance A pure component avoids unnecessary re-renders by ensuring a shallow comparison of states and props, optimizing React codes and performance.', 'Component lifecycle is divided into mounting, updation, and unmounting phases, with methods like componentWillMount, componentDidMount, componentWillReceiveProps, setState, shouldComponentUpdate, componentWillUpdate, componentDidUpdate, and componentWillUnmount being invoked at different stages.', 'Props allow the user to pass arguments or data to components, making components more dynamic, and are read-only and cannot be changed.', 'The setState method enqueues all the updates made to the component state and instructs React to re-render the component and its children with the updated state, ensuring efficient state management.', 'Initializing the state object in a constructor is a crucial step in using state in React components, promoting organized and structured state management.', 'Emphasizing the importance of following JSX conventions and enclosing all HTML tags within a div tag showcases best practices for writing readable and maintainable React code.', 'Creating class components and using the snippet RCE to generate class components in VS Code demonstrates efficient ways to structure and organize React components for better code management.', 'The importance of using event handlers, such as onClick, to trigger state updates and dynamically change content based on user interaction is highlighted, showcasing interactive and responsive user interfaces.', 'Adding styles to components and dynamically updating styles using setState method demonstrates the flexibility and versatility of managing styles in React components, enhancing the visual appeal and user experience of the application.']}, {'end': 8971.548, 'segs': [{'end': 4623.352, 'src': 'embed', 'start': 4515.886, 'weight': 15, 'content': [{'end': 4521.648, 'text': 'Okay .js is defined as but never used.', 'start': 4515.886, 'duration': 5.762}, {'end': 4526.309, 'text': 'Okay Yeah.', 'start': 4522.748, 'duration': 3.561}, {'end': 4530.19, 'text': "Later Let's fix this part also.", 'start': 4527.229, 'duration': 2.961}, {'end': 4565.673, 'text': "let's give it a let's add here the home component add the home component Let's save it now.", 'start': 4534.949, 'duration': 30.724}, {'end': 4575.437, 'text': "Let's fix this issue.", 'start': 4571.516, 'duration': 3.921}, {'end': 4579.999, 'text': "Closed Okay, it's working fine now.", 'start': 4575.617, 'duration': 4.382}, {'end': 4584.121, 'text': 'Yes Now.', 'start': 4582.06, 'duration': 2.061}, {'end': 4589.743, 'text': 'Everything look fine to me.', 'start': 4588.522, 'duration': 1.221}, {'end': 4599.267, 'text': "Let's close this and let's work on the header component.", 'start': 4596.246, 'duration': 3.021}, {'end': 4612.609, 'text': 'Inside this header.', 'start': 4611.509, 'duration': 1.1}, {'end': 4617.13, 'text': 'Let me just do this here.', 'start': 4614.31, 'duration': 2.82}, {'end': 4623.352, 'text': 'Okay Yeah.', 'start': 4618.311, 'duration': 5.041}], 'summary': 'Fixing unused .js definition, resolving issues, and testing components.', 'duration': 107.466, 'max_score': 4515.886, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE4515886.jpg'}, {'end': 5310.239, 'src': 'embed', 'start': 5242.304, 'weight': 0, 'content': [{'end': 5255.789, 'text': "so let's play flex and let's inside this we call for li.", 'start': 5242.304, 'duration': 13.485}, {'end': 5270.192, 'text': "let's give it a line style of so next we'll give it a margin one gram.", 'start': 5255.789, 'duration': 14.403}, {'end': 5274.015, 'text': "after that it's looks good.", 'start': 5270.192, 'duration': 3.823}, {'end': 5292.226, 'text': "yeah, now, after the li we have used okay, fine, let's make it as one second check.", 'start': 5274.015, 'duration': 18.211}, {'end': 5302.191, 'text': "So let's write text.", 'start': 5295.965, 'duration': 6.226}, {'end': 5310.239, 'text': "One thing I forgot to tell you that if you're using like CSS, here I'm using SCSS.", 'start': 5304.854, 'duration': 5.385}], 'summary': 'Using scss for styling, applied flexbox and margin, ensuring elements look good.', 'duration': 67.935, 'max_score': 5242.304, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE5242304.jpg'}, {'end': 5899.394, 'src': 'embed', 'start': 5817.105, 'weight': 2, 'content': [{'end': 5820.366, 'text': 'Finding new things.', 'start': 5817.105, 'duration': 3.261}, {'end': 5829.688, 'text': "It's not coming right.", 'start': 5828.348, 'duration': 1.34}, {'end': 5832.068, 'text': "Let's make this.", 'start': 5830.928, 'duration': 1.14}, {'end': 5839.51, 'text': 'We need to work on this part also.', 'start': 5832.088, 'duration': 7.422}, {'end': 5854.863, 'text': "let's see where the issue is coming.", 'start': 5845.137, 'duration': 9.726}, {'end': 5861.468, 'text': 'okay, fine, we have to still open.', 'start': 5854.863, 'duration': 6.605}, {'end': 5863.029, 'text': "let's try it here.", 'start': 5861.468, 'duration': 1.561}, {'end': 5868.432, 'text': "let's write this code again.", 'start': 5863.029, 'duration': 5.403}, {'end': 5871.234, 'text': "let's just save this file.", 'start': 5868.432, 'duration': 2.802}, {'end': 5873.496, 'text': 'no, not that.', 'start': 5871.234, 'duration': 2.262}, {'end': 5895.791, 'text': "after the return, let's write a command like const active and make our app with active.", 'start': 5876.515, 'duration': 19.276}, {'end': 5899.394, 'text': 'so react action.', 'start': 5895.791, 'duration': 3.603}], 'summary': 'Debugging and improving code, implementing new features in a software project.', 'duration': 82.289, 'max_score': 5817.105, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE5817105.jpg'}, {'end': 6718.295, 'src': 'embed', 'start': 6473.149, 'weight': 6, 'content': [{'end': 6477.431, 'text': "Let's just open another one.", 'start': 6473.149, 'duration': 4.282}, {'end': 6486.875, 'text': 'We will write font size which is 20px.', 'start': 6477.451, 'duration': 9.424}, {'end': 6504.063, 'text': 'color which is black but not light.', 'start': 6497.421, 'duration': 6.642}, {'end': 6513.666, 'text': "ok, let's find white, black only 8 folder.", 'start': 6504.063, 'duration': 9.603}, {'end': 6515.506, 'text': "let's save it.", 'start': 6513.666, 'duration': 1.84}, {'end': 6524.749, 'text': "c now, let's inspect.", 'start': 6515.506, 'duration': 9.243}, {'end': 6568.956, 'text': "now, as you can see, mobile version of this is like this isn't it cool, responsive and back to our code.", 'start': 6527.35, 'duration': 41.606}, {'end': 6571.918, 'text': 'this one is done.', 'start': 6568.956, 'duration': 2.962}, {'end': 6572.618, 'text': 'this is done.', 'start': 6571.918, 'duration': 0.7}, {'end': 6580.523, 'text': "let's work on the changes here.", 'start': 6572.618, 'duration': 7.905}, {'end': 6584.826, 'text': 'let this change here.', 'start': 6580.523, 'duration': 4.303}, {'end': 6599.013, 'text': "let's write menu display block.", 'start': 6590.93, 'duration': 8.083}, {'end': 6615.279, 'text': "fine, now we will like close, don't and close.", 'start': 6599.013, 'duration': 16.266}, {'end': 6649.795, 'text': 'ok, then display block of this one left point here of this.', 'start': 6615.279, 'duration': 34.516}, {'end': 6664.352, 'text': "let's another medium inside this to do all these changes.", 'start': 6649.795, 'duration': 14.557}, {'end': 6667.976, 'text': 'just copy this from here.', 'start': 6664.352, 'duration': 3.624}, {'end': 6696.452, 'text': "put this right here 350 pixels now let's count from head to head only.", 'start': 6667.976, 'duration': 28.476}, {'end': 6706.42, 'text': 'so one and head to copy.', 'start': 6696.452, 'duration': 9.968}, {'end': 6710.283, 'text': 'just copy from here.', 'start': 6706.42, 'duration': 3.863}, {'end': 6718.295, 'text': "okay, let's just paste it inside this.", 'start': 6710.283, 'duration': 8.012}], 'summary': 'Making changes to code, including font size, color, and responsive design for mobile version.', 'duration': 245.146, 'max_score': 6473.149, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE6473149.jpg'}, {'end': 6981.462, 'src': 'embed', 'start': 6917.08, 'weight': 10, 'content': [{'end': 6933.827, 'text': 'and here we have to declare that port main from components.', 'start': 6917.08, 'duration': 16.747}, {'end': 6944.227, 'text': "Yeah, let's save it.", 'start': 6939.005, 'duration': 5.222}, {'end': 6947.829, 'text': 'Okay, compiled successfully.', 'start': 6945.448, 'duration': 2.381}, {'end': 6962.534, 'text': "Now we'll do what? I'm going to add one folder pictures that I have created inside this, but let me just create one.", 'start': 6949.709, 'duration': 12.825}, {'end': 6966.429, 'text': 'basic structure of that.', 'start': 6964.688, 'duration': 1.741}, {'end': 6972.894, 'text': 'let me just open my mean.js file here and inside this mean.js.', 'start': 6966.429, 'duration': 6.465}, {'end': 6976.517, 'text': 'we have to write some code.', 'start': 6972.894, 'duration': 3.623}, {'end': 6981.462, 'text': "let's just add the assets part here.", 'start': 6976.517, 'duration': 4.945}], 'summary': 'Successfully compiled code and added assets to mean.js.', 'duration': 64.382, 'max_score': 6917.08, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE6917080.jpg'}, {'end': 7194.419, 'src': 'embed', 'start': 7073.885, 'weight': 9, 'content': [{'end': 7078.528, 'text': "let's just close this one.", 'start': 7073.885, 'duration': 4.643}, {'end': 7087.691, 'text': 'another dev of class name text which will be used in this.', 'start': 7078.528, 'duration': 9.163}, {'end': 7090.036, 'text': "let's make it inside the beta.", 'start': 7087.691, 'duration': 2.345}, {'end': 7160.427, 'text': "let's create a new paragraph, more aesthetic, and let's save it and see the output.", 'start': 7111.909, 'duration': 48.518}, {'end': 7161.908, 'text': 'is it looking good?', 'start': 7160.427, 'duration': 1.481}, {'end': 7179.696, 'text': 'right, okay, okay, so everything is lost because you get inside this header also.', 'start': 7161.908, 'duration': 17.788}, {'end': 7188.918, 'text': "so let's see the thing we are going to miss.", 'start': 7179.696, 'duration': 9.222}, {'end': 7194.419, 'text': "so what we are missing here it's a app.js.", 'start': 7188.918, 'duration': 5.501}], 'summary': 'Discussion about creating a new class named text, adding it inside the beta, creating a new paragraph, and the need for an app.js file.', 'duration': 120.534, 'max_score': 7073.885, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE7073885.jpg'}, {'end': 7310.221, 'src': 'embed', 'start': 7252.106, 'weight': 18, 'content': [{'end': 7259.27, 'text': 'It will be helpful for us only to write all the CSS properties for this.', 'start': 7252.106, 'duration': 7.164}, {'end': 7264.793, 'text': 'So I am going to add the CSS directly.', 'start': 7261.211, 'duration': 3.582}, {'end': 7268.755, 'text': 'So it will save your time.', 'start': 7264.813, 'duration': 3.942}, {'end': 7273.477, 'text': 'You will find the code in the description also.', 'start': 7268.775, 'duration': 4.702}, {'end': 7278.053, 'text': "and I'm going to show the code here also, so you won't.", 'start': 7275.131, 'duration': 2.922}, {'end': 7285.958, 'text': 'you can just copy it.', 'start': 7278.053, 'duration': 7.905}, {'end': 7293.083, 'text': "okay, let's write Facebook.", 'start': 7285.958, 'duration': 7.125}, {'end': 7304.791, 'text': "the class name of Facebook is also on, and that's okay.", 'start': 7293.083, 'duration': 11.708}, {'end': 7310.221, 'text': "Let's copy this from now.", 'start': 7308.92, 'duration': 1.301}], 'summary': 'Directly adding css properties to save time, providing code in description and displaying it for easy copying.', 'duration': 58.115, 'max_score': 7252.106, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE7252106.jpg'}, {'end': 7850.408, 'src': 'embed', 'start': 7775.673, 'weight': 12, 'content': [{'end': 7783.001, 'text': 'there is some line is coming in the down.', 'start': 7775.673, 'duration': 7.328}, {'end': 7788.788, 'text': "that's why I am doing this a little up.", 'start': 7783.001, 'duration': 5.787}, {'end': 7811.838, 'text': "good, but the picture is here, so it's taking this part only.", 'start': 7803.735, 'duration': 8.103}, {'end': 7817.98, 'text': "so it's right for us to just not intervene in this part.", 'start': 7811.838, 'duration': 6.142}, {'end': 7827.264, 'text': 'okay, this is looking good, clean and good.', 'start': 7817.98, 'duration': 9.284}, {'end': 7828.384, 'text': "let's move forward.", 'start': 7827.264, 'duration': 1.12}, {'end': 7850.408, 'text': "okay, let's move forward and create part here in this component file called section.js.", 'start': 7828.384, 'duration': 22.024}], 'summary': 'Creating a clean and good-looking component file called section.js.', 'duration': 74.735, 'max_score': 7775.673, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE7775673.jpg'}, {'end': 8031.466, 'src': 'embed', 'start': 7973.945, 'weight': 3, 'content': [{'end': 7991.293, 'text': "now we are going to import for one more feature, which is let's write a new tool, assets, and inside that it should be.", 'start': 7973.945, 'duration': 17.348}, {'end': 7993.014, 'text': "let's see the picture here.", 'start': 7991.293, 'duration': 1.721}, {'end': 8000.357, 'text': "let's add this picture.", 'start': 7995.496, 'duration': 4.861}, {'end': 8017.061, 'text': 'yeah, profile pg, we have to call this.', 'start': 8000.357, 'duration': 16.704}, {'end': 8019.741, 'text': 'inside this function that we are going to write.', 'start': 8017.061, 'duration': 2.68}, {'end': 8031.466, 'text': "first, let's write just cut it const section.", 'start': 8019.741, 'duration': 11.725}], 'summary': 'Adding a new feature for importing assets in a new tool.', 'duration': 57.521, 'max_score': 7973.945, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE7973945.jpg'}, {'end': 8509.939, 'src': 'embed', 'start': 8423.891, 'weight': 7, 'content': [{'end': 8425.792, 'text': "it's fine for now.", 'start': 8423.891, 'duration': 1.901}, {'end': 8459.324, 'text': "okay, let's create the options, add a new function, create return div, export default contact.", 'start': 8425.792, 'duration': 33.532}, {'end': 8463.267, 'text': 'yeah, everything look now looks cool.', 'start': 8459.324, 'duration': 3.943}, {'end': 8470.606, 'text': "yeah, now let's start with the class name, contact.", 'start': 8463.267, 'duration': 7.339}, {'end': 8475.469, 'text': "let's say contact.", 'start': 8470.606, 'duration': 4.863}, {'end': 8479.411, 'text': "we love the result in the end, i'm sure.", 'start': 8475.469, 'duration': 3.942}, {'end': 8483.013, 'text': 'link to.', 'start': 8479.411, 'duration': 3.602}, {'end': 8509.939, 'text': "just to link the app, i'm going to add the empty file path, so it'll get linked in the arrow back class name of arrow.", 'start': 8483.013, 'duration': 26.926}], 'summary': 'Creating and linking components for contact class.', 'duration': 86.048, 'max_score': 8423.891, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE8423891.jpg'}], 'start': 3848.826, 'title': 'Front-end development with react and css', 'summary': 'Covers setting up a react project with react router and material ui icons, creating a portfolio using react, styling the header and navigation, developing css and javascript, and implementing project best practices, emphasizing practical coding and structure.', 'chapters': [{'end': 4326.864, 'start': 3848.826, 'title': 'Setting up react project with react router and material ui icons', 'summary': 'Details the process of setting up a react project, including commands for installation, folder creation, and component creation, emphasizing the importance of exporting files and showcasing the functionality of the project.', 'duration': 478.038, 'highlights': ["The command 'npx create react app' is used to create a React project, simplifying the process for the users. npx create react app simplifies React project creation", "The instruction to install 'react router dom' using the command 'npm install react-router-dom' is provided, highlighting the prerequisite of having npm installed. npm install react-router-dom is required for routing functionality", "The process of installing 'material UI icons' is demonstrated using the command 'npm install @material-ui/icons', with an emphasis on the importance of exporting files for functionality. npm install @material-ui/icons adds icon functionality, file exporting is essential for functionality", 'The significance of exporting files for functionality is underscored, as the functionality will not run without proper file exporting. Exporting files is crucial for functionality', 'The chapter concludes by showcasing the functionality of the React project and emphasizing the importance of exporting files for successful execution. Importance of file exporting for project functionality is highlighted']}, {'end': 5089.174, 'start': 4327.785, 'title': 'React portfolio tutorial', 'summary': 'Outlines the process of creating a portfolio using react, including implementing universal styling, routing, and adding essential components such as header and navigation, with a focus on creating a professional portfolio for colleges or professional use.', 'duration': 761.389, 'highlights': ['The tutorial covers implementing universal styling with zero margin, padding, and box sizing, ensuring a consistent design across components.', 'The process includes setting up routing using React Router DOM to navigate between home, about, portfolio, blogs, and contact pages.', 'The focus is on creating a professional portfolio that can be used in colleges or as a professional CV app, aiming to provide an outstanding output for users.', 'The tutorial emphasizes the creation of essential components such as header and navigation, with a specific emphasis on the positioning and content of the header component.', 'The tutorial also covers the process of creating a mobile-friendly navigation menu using the menu outline feature of React.', 'The chapter emphasizes the importance of incorporating key components such as home, about, portfolio, blogs, and contact pages into the portfolio, ensuring a comprehensive and well-organized structure.', 'The tutorial provides guidance on creating a responsive and visually appealing portfolio, with a focus on a professional and user-friendly design.']}, {'end': 5561.854, 'start': 5089.174, 'title': 'Styling header and navigation', 'summary': 'Demonstrates styling the header and navigation using scss and material ui icons, achieving a responsive design and emphasizing the importance of portfolio projects in gaining skills and job opportunities.', 'duration': 472.68, 'highlights': ['The chapter demonstrates styling the header and navigation using SCSS and Material UI icons.', 'Emphasizes the importance of portfolio projects in gaining skills and job opportunities.', 'Achieving a responsive design by using flexbox and specifying properties such as display and margin.']}, {'end': 6353.794, 'start': 5561.854, 'title': 'Developing css and javascript', 'summary': 'Covers the process of creating hover effects and resolving errors in code, emphasizing the importance of clean code and problem-solving. it also highlights the significance of increasing knowledge in a specific programming language and seeking help when facing difficulties.', 'duration': 791.94, 'highlights': ['Creating hover effects and emphasizing clean code The chapter discusses the process of creating hover effects, ensuring clean and readable code, and prioritizing a visually appealing design, with a focus on the importance of clean code.', 'Resolving errors and problem-solving in code It emphasizes the significance of identifying and resolving errors in code, highlighting the importance of problem-solving skills for developers and the value of finding solutions through research and seeking help when encountering difficulties.', 'Importance of increasing knowledge in programming languages The transcript emphasizes the need to increase knowledge in specific programming languages to effectively resolve coding challenges and improve skills, highlighting the importance of continuous learning and development.']}, {'end': 7252.066, 'start': 6353.794, 'title': 'Implementing project best practices', 'summary': 'Highlights the process of implementing a project, focusing on css, responsive design, file organization, and importing files, with an emphasis on practical coding and structure.', 'duration': 898.272, 'highlights': ['The chapter emphasizes the importance of background color and responsive design in implementing projects. The speaker mentions the importance of background color and demonstrates the responsive design of a mobile version of the project, showcasing practical application.', 'The chapter discusses the process of file organization, including creating separate CSS and JS files for components and importing them into the main file. The speaker explains the creation of separate CSS and JS files, demonstrating the practical process of file organization and importation for a structured project.', 'The speaker highlights the practical coding process, including writing React components and importing files into the main app.js file. The speaker demonstrates the practical coding process, including writing React components, importing files into the main app.js file, and emphasizing the structured approach to coding.']}, {'end': 8971.548, 'start': 7252.106, 'title': 'Front-end development css addition', 'summary': 'Details the process of adding css properties for a front-end development project, including the addition of class names and image sources, with a focus on creating sections and contact pages, and implementing various css styles.', 'duration': 1719.442, 'highlights': ['The process of adding CSS properties for a front-end development project is detailed, aiming to save time and provide code for the Facebook class and logos. CSS properties added for front-end development project; Time-saving approach; Code provided for Facebook class and logos.', 'The addition of class names and image sources is emphasized, with a focus on creating sections and contact pages for the project. Emphasis on adding class names and image sources; Focus on creating sections and contact pages.', 'The step-by-step process of implementing various CSS styles, including the creation of input fields, buttons, and color adjustments, is described in detail. Step-by-step implementation of CSS styles; Creation of input fields and buttons; Color adjustments.']}], 'duration': 5122.722, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE3848826.jpg', 'highlights': ['npx create react app simplifies React project creation', 'npm install react-router-dom is required for routing functionality', 'npm install @material-ui/icons adds icon functionality, file exporting is essential for functionality', 'Exporting files is crucial for functionality', 'Importance of file exporting for project functionality is highlighted', 'Creating a professional portfolio for colleges or as a professional CV app', 'Emphasizes the creation of essential components such as header and navigation', 'Importance of incorporating key components such as home, about, portfolio, blogs, and contact pages into the portfolio', 'Emphasizes the importance of portfolio projects in gaining skills and job opportunities', 'Achieving a responsive design by using flexbox and specifying properties such as display and margin', 'The chapter discusses the process of creating hover effects, ensuring clean and readable code', 'Emphasizes the significance of identifying and resolving errors in code, highlighting the importance of problem-solving skills for developers', 'Importance of increasing knowledge in programming languages to effectively resolve coding challenges and improve skills', 'The chapter emphasizes the importance of background color and responsive design in implementing projects', 'The chapter discusses the process of file organization, including creating separate CSS and JS files for components and importing them into the main file', 'The speaker highlights the practical coding process, including writing React components and importing files into the main app.js file', 'CSS properties added for front-end development project; Time-saving approach; Code provided for Facebook class and logos', 'Emphasis on adding class names and image sources; Focus on creating sections and contact pages', 'Step-by-step implementation of CSS styles; Creation of input fields and buttons; Color adjustments']}, {'end': 9712.195, 'segs': [{'end': 9385.458, 'src': 'embed', 'start': 9357.378, 'weight': 0, 'content': [{'end': 9363.8, 'text': 'Therefore, the ability to test and debug a website is another essential skill that a front-end developer needs to have.', 'start': 9357.378, 'duration': 6.422}, {'end': 9372.222, 'text': 'There are various methodologies that can enable front-end developer to make sure that the websites or the product not only looks good but also functions smoothly.', 'start': 9364.52, 'duration': 7.702}, {'end': 9380.075, 'text': 'So although these are the top five skills that a front-end developer must possess, he must also have good communication and interpersonal skills.', 'start': 9372.97, 'duration': 7.105}, {'end': 9385.458, 'text': 'A good understanding of APIs and how the app needs to behave is crucial to make a good developer.', 'start': 9380.775, 'duration': 4.683}], 'summary': 'Front-end developers need skills in testing, debugging, methodologies, communication, and apis.', 'duration': 28.08, 'max_score': 9357.378, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE9357378.jpg'}, {'end': 9421.752, 'src': 'embed', 'start': 9395.605, 'weight': 4, 'content': [{'end': 9400.468, 'text': 'All you need to do is head to our Simply Learn page and type in full-stack developer.', 'start': 9395.605, 'duration': 4.863}, {'end': 9405.306, 'text': "you'll get a brief overview of the course and what it offers.", 'start': 9402.005, 'duration': 3.301}, {'end': 9408.767, 'text': 'If it suits your requirements, you can go ahead and enroll for it.', 'start': 9405.866, 'duration': 2.901}, {'end': 9412.449, 'text': 'Having this course certification will definitely boost your resume.', 'start': 9409.267, 'duration': 3.182}, {'end': 9418.711, 'text': 'So what exactly is Node.js? Now consider a scenario where a user interacts with a web application.', 'start': 9412.849, 'duration': 5.862}, {'end': 9421.752, 'text': 'The user only interacts with the front end of the application.', 'start': 9418.991, 'duration': 2.761}], 'summary': 'Simply learn offers full-stack developer course. node.js enhances web applications.', 'duration': 26.147, 'max_score': 9395.605, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE9395605.jpg'}, {'end': 9556.349, 'src': 'embed', 'start': 9526.485, 'weight': 1, 'content': [{'end': 9528.587, 'text': 'Node.js consists of several components.', 'start': 9526.485, 'duration': 2.102}, {'end': 9530.689, 'text': "Now let's look at them one by one.", 'start': 9529.048, 'duration': 1.641}, {'end': 9532.591, 'text': 'First up, we have modules.', 'start': 9531.089, 'duration': 1.502}, {'end': 9538.757, 'text': 'Now modules are like JavaScript libraries which are used in a Node.js application to include a set of functions.', 'start': 9533.051, 'duration': 5.706}, {'end': 9544.102, 'text': 'Now we can use require function with a parenthesis to include a module in a Node.js application.', 'start': 9539.137, 'duration': 4.965}, {'end': 9549.945, 'text': 'Node.js application has many modules to provide basic functionality needed for a web application.', 'start': 9544.622, 'duration': 5.323}, {'end': 9556.349, 'text': 'Some of them could be http, util, fs, url, query string, stream and zlib.', 'start': 9550.305, 'duration': 6.044}], 'summary': 'Node.js consists of modules like http, util, fs, url, query string, stream, and zlib, used to include a set of functions in applications.', 'duration': 29.864, 'max_score': 9526.485, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE9526485.jpg'}], 'start': 8971.548, 'title': 'Frontend development and node.js skills', 'summary': 'Provides an overview of frontend development, essential skills required, including html, css, javascript, and frameworks like react, angular, vue, and node.js as an open-source cross-platform javascript runtime environment for running server-side applications, emphasizing its speed, asynchronous nature, and components.', 'chapters': [{'end': 9337.221, 'start': 8971.548, 'title': 'Frontend development overview', 'summary': 'Provides an overview of frontend development, covering the final steps of an application, a demonstration of frontend elements, the importance of frontend development, and essential skills required, including html, css, javascript, frameworks like react, angular, vue, jquery, and ember, version control systems like git, and the use of css preprocessors.', 'duration': 365.673, 'highlights': ['The chapter provides an overview of frontend development, covering the final steps of an application, a demonstration of frontend elements, the importance of frontend development, and essential skills required. The chapter provides an overview of frontend development, covering the final steps of an application, a demonstration of frontend elements, the importance of frontend development, and essential skills required.', 'Version control systems available in the market today include Git and Subversion, with Git being the most popular and crucial for adding credibility to a resume. Version control systems available in the market today include Git and Subversion, with Git being the most popular and crucial for adding credibility to a resume.', 'Frontend development entails the use of HTML, CSS, and JavaScript as fundamental languages, with HTML for structuring web pages, CSS for aesthetics, and JavaScript for interactivity. Frontend development entails the use of HTML, CSS, and JavaScript as fundamental languages, with HTML for structuring web pages, CSS for aesthetics, and JavaScript for interactivity.', 'Frontend frameworks such as React, Angular, Vue, jQuery, and Ember are essential skills to be proficient at, each offering unique advantages and applications in web development. Frontend frameworks such as React, Angular, Vue, jQuery, and Ember are essential skills to be proficient at, each offering unique advantages and applications in web development.', 'CSS preprocessors are crucial for managing and generating CSS from a different language, providing better compatibility and organization for medium to large-size applications. CSS preprocessors are crucial for managing and generating CSS from a different language, providing better compatibility and organization for medium to large-size applications.']}, {'end': 9712.195, 'start': 9337.721, 'title': 'Front-end developer skills and node.js overview', 'summary': 'Covers the top five skills required for a front-end developer, including testing and debugging, communication, and api understanding, with an emphasis on node.js as an open-source cross-platform javascript runtime environment for running server-side applications, its speed, asynchronous nature, and components such as modules, console, cluster, global, error handling, streaming, buffer, domain, and dns.', 'duration': 374.474, 'highlights': ['Node.js is an open-source cross-platform JavaScript runtime environment for running server-side applications, used for developing I-O intensive web applications like video streaming sites, single-page applications, online chatting applications, and other web applications. Node.js is used for developing I-O intensive web applications such as video streaming sites and single-page applications.', "Node.js is extremely fast due to being built on Google Chrome's V8 JavaScript engine, has around 50,000 bundles for developers in the Node Package Manager, and its APIs are asynchronous, dramatically reducing processing time while uploading video and audio files. Node.js is fast, has a large number of bundles for developers, and its APIs are asynchronous, reducing processing time while uploading video and audio files.", 'Node.js is an open-source platform and easy for beginners in web development, justifying its popularity and adoption by a large number of organizations and businesses. Node.js is open-source and easy for beginners in web development, justifying its popularity and adoption.', 'Node.js consists of components like modules, console, cluster, global, error handling, streaming, buffer, domain, and DNS, which provide various functionalities and mechanisms for handling different aspects of web development. Node.js consists of various components such as modules, console, cluster, global, error handling, streaming, buffer, domain, and DNS, providing diverse functionalities for web development.', 'The top five skills for a front-end developer include testing and debugging, communication, interpersonal skills, understanding of APIs, and knowledge of how the app needs to behave. Top five skills for a front-end developer include testing and debugging, communication, interpersonal skills, API understanding, and knowledge of app behavior.']}], 'duration': 740.647, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE8971548.jpg', 'highlights': ['Frontend development involves HTML, CSS, and JavaScript as fundamental languages.', 'Frontend frameworks like React, Angular, and Vue are essential skills for web development.', 'Node.js is used for developing I-O intensive web applications like video streaming sites.', "Node.js is extremely fast due to being built on Google Chrome's V8 JavaScript engine.", 'Node.js has around 50,000 bundles for developers in the Node Package Manager.']}, {'end': 10606.816, 'segs': [{'end': 9781.211, 'src': 'embed', 'start': 9753.176, 'weight': 2, 'content': [{'end': 9759, 'text': "Now that we are familiar with all the major parts of Node.js, let's go ahead and learn about the Node.js Express framework.", 'start': 9753.176, 'duration': 5.824}, {'end': 9767.315, 'text': 'Express is a flexible Node.js web application framework that provides a wide set of features to develop both web and mobile applications.', 'start': 9759.767, 'duration': 7.548}, {'end': 9773.262, 'text': 'You can assume Express as a layer built on top of the Node.js that helps manage the server and the routes.', 'start': 9767.716, 'duration': 5.546}, {'end': 9777.106, 'text': "Now let's have a quick look at some of the core features of Express framework.", 'start': 9773.702, 'duration': 3.404}, {'end': 9781.211, 'text': 'It is used to design single-page, multi-page and hybrid web applications.', 'start': 9777.666, 'duration': 3.545}], 'summary': 'Node.js express is a flexible framework for web and mobile apps, supporting single-page, multi-page, and hybrid applications.', 'duration': 28.035, 'max_score': 9753.176, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE9753176.jpg'}, {'end': 9830.074, 'src': 'embed', 'start': 9790.423, 'weight': 0, 'content': [{'end': 9795.67, 'text': 'It also allows dynamic rendering of HTML pages based on passing arguments to templates.', 'start': 9790.423, 'duration': 5.247}, {'end': 9799.773, 'text': "Now moving on, let's take a quick example of a simple Hello World program.", 'start': 9796.05, 'duration': 3.723}, {'end': 9803.576, 'text': 'Now this is developed using Express Framework to gain a better understanding.', 'start': 9800.133, 'duration': 3.443}, {'end': 9806.238, 'text': 'Alright, first up we have the var express.', 'start': 9803.936, 'duration': 2.302}, {'end': 9810.121, 'text': 'Now this is used to import Express Framework into our Node.js application.', 'start': 9806.478, 'duration': 3.643}, {'end': 9814.965, 'text': 'Now the app.get method is a callback function with parameters request and response.', 'start': 9810.401, 'duration': 4.564}, {'end': 9823.87, 'text': 'The request object represents the HTTP request and has properties for the request query string, parameters, body, HTTP headers, etc.', 'start': 9815.385, 'duration': 8.485}, {'end': 9830.074, 'text': 'The response object represents the HTTP response that an express app sends when it gets an HTTP request.', 'start': 9824.07, 'duration': 6.004}], 'summary': 'Express framework allows dynamic rendering of html pages and handling http requests.', 'duration': 39.651, 'max_score': 9790.423, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE9790423.jpg'}, {'end': 9958.383, 'src': 'embed', 'start': 9928.786, 'weight': 1, 'content': [{'end': 9935.372, 'text': 'Uber is an American multinational ride hailing company offering services that include peer-to-peer ride sharing,', 'start': 9928.786, 'duration': 6.586}, {'end': 9937.414, 'text': 'ride service hailing and food delivery.', 'start': 9935.372, 'duration': 2.042}, {'end': 9943.877, 'text': 'The reasons why the company chose Node.js were Asynchronous I.O., Quick Iterations and Active Open Source Community.', 'start': 9937.714, 'duration': 6.163}, {'end': 9946.558, 'text': 'As mentioned earlier, Asynchronous I.O.', 'start': 9944.257, 'duration': 2.301}, {'end': 9950.099, 'text': 'permits other processing to continue before the transmission has finished.', 'start': 9946.638, 'duration': 3.461}, {'end': 9951.44, 'text': 'Now, Quick Iterations.', 'start': 9950.42, 'duration': 1.02}, {'end': 9958.383, 'text': 'Now, Node.js is continually being updated and added new features that help in further improvement in the performance of web servers.', 'start': 9951.64, 'duration': 6.743}], 'summary': 'Uber chose node.js for asynchronous i.o., quick iterations, and an active open source community.', 'duration': 29.597, 'max_score': 9928.786, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE9928786.jpg'}], 'start': 9712.475, 'title': 'Node.js framework, express, use cases, and industry trends', 'summary': 'Provides an overview of node.js, including its components like dns module and debugger, detailed explanation of the node.js express framework, and notable use cases in top companies. it also explores reasons for companies choosing node.js, its benefits, and growing demand for node.js developers, with a 40% increase in notejs downloads and better salary options.', 'chapters': [{'end': 9909.707, 'start': 9712.475, 'title': 'Node.js framework and use cases', 'summary': 'Provides an overview of node.js, including its components like dns module and debugger, a detailed explanation of the node.js express framework and its core features, and notable use cases of node.js in top companies such as netflix and walmart.', 'duration': 197.232, 'highlights': ['Netflix, with over 117 million users, trusted their services to Node.js due to application scalability and data intensive application. Netflix, with over 117 million users, chose Node.js due to its application scalability and data intensive application, allowing millions of people to stream simultaneously.', "Walmart, the world's largest company by revenue, has incorporated Node.js for its services. Walmart, the world's largest company by revenue, has incorporated Node.js for its services.", 'Express framework is a flexible Node.js web application framework that is used to design single-page, multi-page, and hybrid web applications. Express framework is used to design single-page, multi-page, and hybrid web applications.', 'Node.js includes a DNS module used for performing name resolution with and without network communication. Node.js includes a DNS module used for performing name resolution with and without network communication.', 'Node.js debugger is accessible via a V8 inspector and supports simple inspection of code. Node.js debugger is accessible via a V8 inspector and supports simple inspection of code.']}, {'end': 10606.816, 'start': 9909.707, 'title': 'Node.js use cases & industry trends', 'summary': 'Explores the reasons for companies choosing node.js, including its benefits such as asynchronous i.o., quick iterations, active open source community, and its use by major companies like uber, nasa, paypal, and medium. it also discusses the growing demand for node.js developers, with a 40% increase in notejs downloads in the last year and its popularity due to javascript, leading to better salary options.', 'duration': 697.109, 'highlights': ['Node.js is chosen by major companies like Uber, NASA, PayPal, and Medium due to benefits such as asynchronous I.O., quick iterations, and active open source community. The chapter highlights how major companies like Uber, NASA, PayPal, and Medium have chosen Node.js due to its benefits such as asynchronous I.O., quick iterations, and an active open source community.', 'Node.js usage has seen a 40% increase in downloads in the last year, and its popularity is attributed to JavaScript, leading to better salary options for Node.js developers. The chapter discusses the 40% increase in Node.js downloads in the last year and attributes its popularity to JavaScript, resulting in better salary options for Node.js developers.', 'Forbes ranks Node.js as one of the top 10 most in-demand jobs, and Node.js developers are offered better salary options than other web technology developers. The chapter highlights Forbes ranking Node.js as one of the top 10 most in-demand jobs and mentions that Node.js developers are offered better salary options than other web technology developers.']}], 'duration': 894.341, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE9712475.jpg', 'highlights': ['Node.js chosen by Netflix for application scalability and data intensive application, allowing millions to stream simultaneously.', "Walmart, the world's largest company by revenue, has incorporated Node.js for its services.", 'Express framework is a flexible Node.js web application framework used to design single-page, multi-page, and hybrid web applications.', 'Node.js includes a DNS module used for performing name resolution with and without network communication.', 'Node.js debugger is accessible via a V8 inspector and supports simple inspection of code.', 'Major companies like Uber, NASA, PayPal, and Medium have chosen Node.js due to benefits such as asynchronous I.O., quick iterations, and an active open source community.', 'Node.js usage has seen a 40% increase in downloads in the last year, leading to better salary options for Node.js developers.', 'Forbes ranks Node.js as one of the top 10 most in-demand jobs, and Node.js developers are offered better salary options than other web technology developers.']}, {'end': 13430.787, 'segs': [{'end': 12272.012, 'src': 'embed', 'start': 12161.791, 'weight': 0, 'content': [{'end': 12166.936, 'text': "So we're going to create a folder called routes and then a sub folder called API.", 'start': 12161.791, 'duration': 5.145}, {'end': 12172.849, 'text': "And then we'll call a file in there called users.js.", 'start': 12169.827, 'duration': 3.022}, {'end': 12178.173, 'text': "So as we're updating our scripts, we know where to pull the data from.", 'start': 12173.249, 'duration': 4.924}, {'end': 12182.716, 'text': "It's just a standard way of being able to pull out the values.", 'start': 12179.153, 'duration': 3.563}, {'end': 12190.221, 'text': "So in here we're going to say, in this instance, express is required for our scripts.", 'start': 12183.216, 'duration': 7.005}, {'end': 12200.355, 'text': "And we're going to also say that router within Express router.", 'start': 12192.002, 'duration': 8.353}, {'end': 12206.743, 'text': 'Correct naming convention.', 'start': 12204.68, 'duration': 2.063}, {'end': 12212.689, 'text': 'And the script is case sensitive.', 'start': 12210.567, 'duration': 2.122}, {'end': 12216.873, 'text': "We'll also want to create a value later on that will have a unique ID.", 'start': 12213.089, 'duration': 3.784}, {'end': 12226.06, 'text': "So we're actually going to pull in a UUID package that will actually then allow us to install unique identifiers.", 'start': 12216.933, 'duration': 9.127}, {'end': 12229.904, 'text': 'So we use node package manager to install UUID.', 'start': 12226.481, 'duration': 3.423}, {'end': 12241.815, 'text': 'Again, this is a great example of how you can go from nothing to something very quickly with Node.js, because we installed Express,', 'start': 12231.525, 'duration': 10.29}, {'end': 12245.198, 'text': "we installed UUID and we're off to the races.", 'start': 12241.815, 'duration': 3.383}, {'end': 12254.206, 'text': "So let's have users require the path for where our API is going to be located.", 'start': 12246.759, 'duration': 7.447}, {'end': 12268.99, 'text': "All right, so let's do a basic get, which will be to pull the records.", 'start': 12263.305, 'duration': 5.685}, {'end': 12272.012, 'text': "I'm going to have it pull all the records.", 'start': 12269.01, 'duration': 3.002}], 'summary': 'Creating routes and api folder, installing uuid package for unique identifiers, using node.js to quickly set up express and uuid.', 'duration': 110.221, 'max_score': 12161.791, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE12161791.jpg'}, {'end': 12625.843, 'src': 'embed', 'start': 12536.708, 'weight': 15, 'content': [{'end': 12540.352, 'text': 'And then that will actually then allow us to pull in that unique record.', 'start': 12536.708, 'duration': 3.644}, {'end': 12559.884, 'text': 'Pass the data.', 'start': 12558.603, 'duration': 1.281}, {'end': 12573.956, 'text': 'Okay, so found.', 'start': 12559.904, 'duration': 14.052}, {'end': 12581.282, 'text': "I'm going to take the JSON and print it.", 'start': 12575.598, 'duration': 5.684}, {'end': 12585.286, 'text': "So we're going to filter here against user ID.", 'start': 12581.302, 'duration': 3.984}, {'end': 12588.889, 'text': 'and then publish the results.', 'start': 12586.933, 'duration': 1.956}, {'end': 12617.8, 'text': "Else, if it doesn't work, then we'll just have a generic error message.", 'start': 12613.018, 'duration': 4.782}, {'end': 12623.142, 'text': "We shouldn't see this though in the demos we're creating.", 'start': 12620.441, 'duration': 2.701}, {'end': 12625.843, 'text': 'This is just good practice.', 'start': 12623.883, 'duration': 1.96}], 'summary': 'Filter data by user id, print json, and publish results.', 'duration': 89.135, 'max_score': 12536.708, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE12536708.jpg'}, {'end': 12876.314, 'src': 'embed', 'start': 12849.079, 'weight': 13, 'content': [{'end': 12853.924, 'text': "And we're going to create records for Steph, and her email address is Steph at gmail.com.", 'start': 12849.079, 'duration': 4.845}, {'end': 12859.449, 'text': 'Yep, looking good.', 'start': 12858.528, 'duration': 0.921}, {'end': 12868.537, 'text': "Okay, so let's go ahead and send that.", 'start': 12866.355, 'duration': 2.182}, {'end': 12870.059, 'text': 'We sent it.', 'start': 12869.398, 'duration': 0.661}, {'end': 12875.393, 'text': 'And if we look at the bottom, we can actually now see that we have five records.', 'start': 12871.428, 'duration': 3.965}, {'end': 12876.314, 'text': "So a new one's been added.", 'start': 12875.413, 'duration': 0.901}], 'summary': 'Created 5 records for steph with email address steph@gmail.com.', 'duration': 27.235, 'max_score': 12849.079, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE12849079.jpg'}], 'start': 10606.836, 'title': 'Npm and expressjs fundamentals', 'summary': "Covers understanding npm's functionalities and the basics of expressjs, including installation, project setup, api management, and using tools like postman. it also emphasizes the importance of using visual studio code and demonstrates the use of uuid for unique identifiers.", 'chapters': [{'end': 10804.547, 'start': 10606.836, 'title': 'Understanding npm package manager', 'summary': 'Explains the key functionalities of the node package manager (npm), serving as a central repository for packages and modules, allowing version management, dependency control, and easy deployment, while also enabling developers to extend their projects with modular functionalities.', 'duration': 197.711, 'highlights': ['NPM serves as a central repository for all packages and modules, allowing online search and installation through a command line utility. NPM provides a central repository for all packages and modules, enabling developers to search for and install them through a command line utility, enhancing accessibility and ease of use.', 'The concept of using NPM is likened to working with Lego bricks, where individual packages act as small, specific functionalities that can be edited, updated, and maintained separately from the whole environment. The analogy of Lego bricks illustrates how individual packages in NPM can be independently managed, edited, and updated, allowing for modular and flexible development practices.', 'NPM facilitates version control, dependency management, testing, and deployment of modules, streamlining the development and release processes. NPM enables efficient version control, dependency management, testing, and deployment of modules, streamlining the development and release processes for developers.']}, {'end': 11351.957, 'start': 10806.617, 'title': 'Installing node.js and npm', 'summary': 'Explains how to verify the installation of node.js and npm, initialize a project folder, manipulate package.json using npm, install and uninstall packages like express and bootstrap, and manage sub-modules efficiently.', 'duration': 545.34, 'highlights': ["You can verify the installation of Node.js by using the command 'node --version' and NPM using 'npm --version'. This provides a specific method to verify the installation of Node.js and NPM.", "The process of initializing a folder as a project folder for working with NPM is explained, including the command 'npm init' and its implications. This highlights the essential steps for initializing a folder as a project folder for NPM.", "The process of installing and uninstalling packages like Express and Bootstrap using NPM is demonstrated, including the commands 'npm install ' and 'npm uninstall '. This illustrates the practical usage of NPM for installing and uninstalling packages.", 'The concept of managing sub-modules efficiently by running an install command to install multiple sub-modules at once is explained. This provides insights into an efficient method for managing sub-modules using NPM.']}, {'end': 11555.537, 'start': 11352.137, 'title': 'Using npm and expressjs basics', 'summary': 'Covers using npm for package initialization and managing dependencies, as well as an introduction to expressjs, highlighting its features and a basic example of creating a simple hello world application.', 'duration': 203.4, 'highlights': ['The chapter covers using NPM for package initialization and managing dependencies, with a focus on creating the first package and controlling naming conventions within the metadata.', 'Introduction to ExpressJS, a flexible Node.js and web application framework for building web and mobile applications, emphasizing its simplicity and functionality for creating websites, APIs, and routing calls.', 'ExpressJS features include building simple web applications, middleware requests and responses, managing routing of different HTTP methods via URL, and dynamic testing of developed work.', 'Basic example provided for creating a simple hello world application using ExpressJS, including installation, defining ports, and writing basic code.']}, {'end': 11730.377, 'start': 11555.857, 'title': 'Getting started with expressjs', 'summary': 'Explains how to set up expressjs on a local development machine, including installing node.js, selecting a text editor, and using postman to visualize apis, while also demonstrating hosting and running a simple web application.', 'duration': 174.52, 'highlights': ['Installing Node.js is the first step to set up ExpressJS on a local development machine. Node.js is recommended for installation to run ExpressJS, available at nodejs.org, with options for current features or a more stable version for beginners.', 'Selecting Visual Studio Code as the text editor for developing ExpressJS and APIs. Visual Studio Code is recommended as an open-source code editor that runs on multiple platforms, providing various extensions for development.', 'Using Postman to visualize and access APIs created in ExpressJS. Postman is a recommended tool for quickly visualizing and accessing APIs created in ExpressJS, available for download at postman.com.', 'Demonstrating hosting and running a simple web application with ExpressJS. The chapter demonstrates how to host and run a simple web application using ExpressJS, including defining host addresses, ports, and running scripts.']}, {'end': 12374.859, 'start': 11733.464, 'title': 'Setting up node.js project with express', 'summary': 'Covers the process of setting up a node.js project with express, including initializing the project, installing express, creating apis, and using uuid to generate unique identifiers and highlights the importance of using visual studio code for the development process and installing necessary packages using npm to quickly set up a node.js project.', 'duration': 641.395, 'highlights': ['Using Visual Studio Code for setting up the project Visual Studio Code is mentioned as a great tool for getting started with setting up a Node.js project, highlighting its usefulness in the development process.', 'Initializing the project with npm The process of initializing the project with npm init is described, emphasizing the importance of this step in setting up a Node.js project.', 'Installing Express using npm The process of installing Express using npm, and the flexibility to specify versions, is explained, highlighting the importance of this step in setting up a Node.js project with Express.', 'Creating APIs and using UUID for unique identifiers The creation of APIs and the use of UUID to generate unique identifiers are demonstrated, highlighting the essential steps in setting up a Node.js project with APIs.']}, {'end': 13430.787, 'start': 12377.502, 'title': 'Using postman for api management', 'summary': 'Discusses using postman as an api management tool to perform various actions such as retrieving all records, filtering by id, creating a new user, updating a record, and deleting an account against a json package stored at api localhost:3000. the chapter demonstrates the use of http commands and uuid for unique identifiers.', 'duration': 1053.285, 'highlights': ['The chapter discusses using Postman as an API management tool to perform various actions such as retrieving all records, filtering by ID, creating a new user, updating a record, and deleting an account against a JSON package stored at API localhost:3000. Demonstrates the usage of Postman for various API management tasks with specific actions and the location of the JSON package.', 'The chapter demonstrates the use of HTTP commands and UUID for unique identifiers. Illustrates the use of HTTP commands for performing CRUD operations and the utilization of UUID for creating unique identifiers.', 'The chapter provides a detailed walkthrough of creating, updating, and deleting records within the JSON package using Postman. Provides a step-by-step explanation of creating, updating, and deleting records within the JSON package using Postman for API management.']}], 'duration': 2823.951, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE10606836.jpg', 'highlights': ['NPM serves as a central repository for all packages and modules, allowing online search and installation through a command line utility.', 'NPM facilitates version control, dependency management, testing, and deployment of modules, streamlining the development and release processes.', 'The concept of using NPM is likened to working with Lego bricks, where individual packages act as small, specific functionalities that can be edited, updated, and maintained separately from the whole environment.', "The process of initializing a folder as a project folder for working with NPM is explained, including the command 'npm init' and its implications.", "The process of installing and uninstalling packages like Express and Bootstrap using NPM is demonstrated, including the commands 'npm install ' and 'npm uninstall '.", 'Introduction to ExpressJS, a flexible Node.js and web application framework for building web and mobile applications, emphasizing its simplicity and functionality for creating websites, APIs, and routing calls.', 'Basic example provided for creating a simple hello world application using ExpressJS, including installation, defining ports, and writing basic code.', 'Installing Node.js is the first step to set up ExpressJS on a local development machine.', 'Selecting Visual Studio Code as the text editor for developing ExpressJS and APIs.', 'Using Postman to visualize and access APIs created in ExpressJS.', 'Demonstrating hosting and running a simple web application with ExpressJS.', 'Initializing the project with npm.', 'Installing Express using npm.', 'Creating APIs and using UUID for unique identifiers.', 'The chapter discusses using Postman as an API management tool to perform various actions such as retrieving all records, filtering by ID, creating a new user, updating a record, and deleting an account against a JSON package stored at API localhost:3000.', 'The chapter demonstrates the use of HTTP commands and UUID for unique identifiers.', 'The chapter provides a detailed walkthrough of creating, updating, and deleting records within the JSON package using Postman.']}, {'end': 15235.994, 'segs': [{'end': 13459.371, 'src': 'embed', 'start': 13430.827, 'weight': 0, 'content': [{'end': 13435.449, 'text': 'We just had to update the values in the two fields that we needed to be updated.', 'start': 13430.827, 'duration': 4.622}, {'end': 13437.75, 'text': 'In this case, name and email.', 'start': 13436.529, 'duration': 1.221}, {'end': 13444.984, 'text': 'And the final step was to go ahead and delete a record.', 'start': 13441.582, 'duration': 3.402}, {'end': 13450.286, 'text': 'So these are all APIs that you can now pull into your own application,', 'start': 13445.264, 'duration': 5.022}, {'end': 13459.371, 'text': 'so you can use them in web applications or you can actually go ahead and use them in other applications, such as mobile applications,', 'start': 13450.286, 'duration': 9.085}], 'summary': 'Updated name and email fields, deleted a record, and created apis for use in web and mobile applications.', 'duration': 28.544, 'max_score': 13430.827, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE13430827.jpg'}, {'end': 13714.308, 'src': 'embed', 'start': 13664.588, 'weight': 7, 'content': [{'end': 13670.671, 'text': "And here we're going to put in our solutions that we absolutely have to have for this to run.", 'start': 13664.588, 'duration': 6.083}, {'end': 13678.915, 'text': "So we're going to install Express and Express is a web service application, but it's very flexible.", 'start': 13670.691, 'duration': 8.224}, {'end': 13681.997, 'text': "And one of the things that we're going to use it for today is build APIs.", 'start': 13678.995, 'duration': 3.002}, {'end': 13688.18, 'text': "So in our terminal window, we're going to type npm install dash dash save Express.", 'start': 13683.278, 'duration': 4.902}, {'end': 13691.882, 'text': 'This will install Express locally on our machine.', 'start': 13689.14, 'duration': 2.742}, {'end': 13699.9, 'text': "and takes a few minutes, but it's going to go and download all the latest features.", 'start': 13696.358, 'duration': 3.542}, {'end': 13702.121, 'text': 'This is going to be the latest version of Express.', 'start': 13700.44, 'duration': 1.681}, {'end': 13709.985, 'text': "You can, if you want to specify a specific version of software for these examples, there's no need to do that.", 'start': 13702.181, 'duration': 7.804}, {'end': 13712.607, 'text': "So you'll see that everything has been installed.", 'start': 13710.806, 'duration': 1.801}, {'end': 13714.308, 'text': 'We expand the node module.', 'start': 13712.627, 'duration': 1.681}], 'summary': 'Installing express for building apis, takes a few minutes.', 'duration': 49.72, 'max_score': 13664.588, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE13664588.jpg'}, {'end': 13916.79, 'src': 'embed', 'start': 13880.55, 'weight': 13, 'content': [{'end': 13884.794, 'text': "And so what we'll do is we will test this in a moment.", 'start': 13880.55, 'duration': 4.244}, {'end': 13888.058, 'text': 'This will be running from our web browser.', 'start': 13885.655, 'duration': 2.403}, {'end': 13892.222, 'text': "Actually, we'll probably open up Postman and run this through Postman.", 'start': 13888.538, 'duration': 3.684}, {'end': 13897.508, 'text': 'Okay, that pulls all the movies.', 'start': 13892.723, 'duration': 4.785}, {'end': 13909.603, 'text': "And we'll do another get in a moment where we'll filter by movie ID, but let's just get them all for right now.", 'start': 13902.116, 'duration': 7.487}, {'end': 13916.79, 'text': 'And we are going to listen on a server port.', 'start': 13911.505, 'duration': 5.285}], 'summary': 'Testing the system for retrieving movies using postman and server port.', 'duration': 36.24, 'max_score': 13880.55, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE13880550.jpg'}, {'end': 14062.5, 'src': 'embed', 'start': 13996.049, 'weight': 4, 'content': [{'end': 13998.21, 'text': 'Strongly encourage you to have a go with this.', 'start': 13996.049, 'duration': 2.161}, {'end': 14001.572, 'text': "So we're going to get the get command.", 'start': 13998.831, 'duration': 2.741}, {'end': 14014.301, 'text': "And if you've done any applications, web applications, you probably use get and post for the data that you're pulling and pushing from forms online.", 'start': 14002.113, 'duration': 12.188}, {'end': 14015.622, 'text': 'Same principle.', 'start': 14014.941, 'duration': 0.681}, {'end': 14020.925, 'text': "So we want to go ahead and we're going to go and grab get.", 'start': 14016.362, 'duration': 4.563}, {'end': 14033.251, 'text': "I'm going to type in localhost and it's going to be colon 3000 slash movies because that's the name of the file.", 'start': 14020.945, 'duration': 12.306}, {'end': 14044.957, 'text': "And we're going to hit send and what we get as a response is the data in our query.", 'start': 14033.271, 'duration': 11.686}, {'end': 14048.236, 'text': 'Sorry, in our array.', 'start': 14047.216, 'duration': 1.02}, {'end': 14048.816, 'text': 'Here we go.', 'start': 14048.476, 'duration': 0.34}, {'end': 14049.897, 'text': "So there's our array.", 'start': 14049.076, 'duration': 0.821}, {'end': 14053.257, 'text': 'And the data values have been pulled back by Postman.', 'start': 14050.617, 'duration': 2.64}, {'end': 14056.538, 'text': "That's great.", 'start': 14055.918, 'duration': 0.62}, {'end': 14062.5, 'text': 'So now we want to go ahead and add a movie to our array.', 'start': 14058.879, 'duration': 3.621}], 'summary': 'Using postman to make a get request to localhost:3000/movies and retrieve data in the array.', 'duration': 66.451, 'max_score': 13996.049, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE13996049.jpg'}, {'end': 14767.499, 'src': 'embed', 'start': 14719.539, 'weight': 1, 'content': [{'end': 14730.242, 'text': "And when we do this we'll actually then, when we put in the URL path, which will be logo, host colon 3000 slash, movie slash, and then the ID number.", 'start': 14719.539, 'duration': 10.703}, {'end': 14733.102, 'text': 'So in this instance, either one or two, probably use two.', 'start': 14730.282, 'duration': 2.82}, {'end': 14741.024, 'text': 'That will then delete from our array the record for the Irishman.', 'start': 14733.842, 'duration': 7.182}, {'end': 14767.499, 'text': "Let's save our files.", 'start': 14766.138, 'duration': 1.361}], 'summary': 'Deleting the record for the irishman using url path, host, and id number.', 'duration': 47.96, 'max_score': 14719.539, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE14719539.jpg'}, {'end': 15027.626, 'src': 'embed', 'start': 15004.005, 'weight': 3, 'content': [{'end': 15015.559, 'text': "The thing that's great about using a JSON Web Token is that the information itself is encrypted and it can only be verified and trusted through a public private key pair.", 'start': 15004.005, 'duration': 11.554}, {'end': 15018.862, 'text': "And we'll get into that about how you can actually get to those.", 'start': 15015.899, 'duration': 2.963}, {'end': 15023.224, 'text': 'So why would you actually want to go ahead and use a JSON Web Token?', 'start': 15019.443, 'duration': 3.781}, {'end': 15025.465, 'text': 'Are there other formats that you can use?', 'start': 15023.285, 'duration': 2.18}, {'end': 15027.626, 'text': 'Well, yes, there are other formats you can use.', 'start': 15025.485, 'duration': 2.141}], 'summary': 'Json web token encrypts information, verified with public-private key pair. can be used alongside other formats.', 'duration': 23.621, 'max_score': 15004.005, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE15004005.jpg'}], 'start': 13430.827, 'title': 'Building restful api, movie management, and node.js authentication', 'summary': 'Covers building restful api with node.js, creating movie api, managing movies api with express, and using jwt for secure data transmission and authentication, including steps, tools, and resulting database entries.', 'chapters': [{'end': 13749.24, 'start': 13430.827, 'title': 'Building restful api with node.js', 'summary': 'Covers the steps to build a restful api with node.js, including installing node.js, vs code, and postman, creating a project in vs code, initializing with node package manager, and installing express for building apis on local host port 3000.', 'duration': 318.413, 'highlights': ['The chapter covers the steps to build a RESTful API with Node.js It provides an overview of the main topic of the transcript.', 'Installing Node.js, VS Code, and Postman The transcript details the necessary software to be installed for building the RESTful API.', 'Creating a project in VS Code Explains the process of creating a project in VS Code, an essential step in building the RESTful API.', 'Initializing with Node Package Manager Describes the process of initializing with Node Package Manager to make the project a package.', 'Installing Express for building APIs on local host port 3000 Details the installation of Express, a crucial step for building APIs on the local host port 3000.']}, {'end': 14299.215, 'start': 13754.646, 'title': 'Creating movie api with node.js', 'summary': 'Demonstrates the creation of a movie api using node.js, including defining a structured array for movies, creating two apis (get and post) to manage movie data, and testing the api functionality using postman.', 'duration': 544.569, 'highlights': ['The chapter demonstrates the creation of a movie API using Node.js It includes defining a structured array for movies and creating two APIs (GET and POST) to manage movie data.', 'The APIs allow pulling and pushing data in and out of a variable The GET API retrieves the list of items in the array, and the POST API allows pushing in a new item to the array.', 'Testing the API functionality using Postman Postman is used to test the GET and POST commands, allowing the user to manage APIs efficiently.']}, {'end': 14658.162, 'start': 14300.596, 'title': 'Managing movies api with express', 'summary': 'Covers building an api with express to manage a movie database, including adding new movies, validating data, and retrieving movie details, ultimately resulting in a database with three entries.', 'duration': 357.566, 'highlights': ['The API is used to add new movies to the database, resulting in a list of three movie entries.', 'Validation is performed using the get command against a specific ID number to filter and retrieve movie details.', 'The process of using Postman to efficiently test and validate the API functionality is highlighted, emphasizing its speed and efficiency.']}, {'end': 14927.078, 'start': 14658.162, 'title': 'Expressjs movie management', 'summary': 'Demonstrates using expressjs to build a movie management api, including creating, searching, and deleting movies, with the final result being a successful deletion of a movie record and confirmation of the action.', 'duration': 268.916, 'highlights': ['The chapter demonstrates using ExpressJS to build a movie management API ExpressJS is used to create a movie management API, showcasing the practical application of the technology.', 'Successfully deleting a movie record and confirming the action The chapter concludes with the successful deletion of a movie record using ExpressJS, providing a confirmation message for the action.', 'Creating, searching, and deleting movies using ExpressJS The process involves creating, searching, and deleting movies within the movie management API built using ExpressJS.', 'Using ExpressJS to pass JSON effectively back and forth ExpressJS is leveraged to efficiently handle JSON data transfer within the movie management process.', 'Filtering movie records against an ID and deleting a movie The API allows for filtering movie records against an ID and performing deletion of specific movies.']}, {'end': 15235.994, 'start': 14927.919, 'title': 'Node.js authentication with jwt', 'summary': 'Covers the basics of json web tokens (jwt), including its structure and use cases. it emphasizes the benefits of using jwt for secure data transmission and authentication in enterprise and real-world applications.', 'duration': 308.075, 'highlights': ['JSON Web Token is a compact, self-contained way of securely transmitting information between parties using a JSON object. It allows for securely transmitting information between parties using a JSON object, providing a compact and tight way of sending data.', 'JWT provides a high level of security through encryption and can be used for passing authentication over HTTP in web applications. It offers a high level of security through encryption and is ideal for passing authentication over HTTP in web applications.', 'The structure of a JWT includes the header, payload, and signature, utilizing algorithms like SHA-512 for encryption. The structure comprises the header, payload, and signature, utilizing algorithms such as SHA-512 for encryption.', 'JWT use cases include authorization for accessing different parts of an application and securely exchanging information in scenarios like blockchain. It is used for authorization in applications and securely exchanging information, such as in blockchain scenarios.']}], 'duration': 1805.167, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE13430827.jpg', 'highlights': ['The chapter covers the steps to build a RESTful API with Node.js', 'Creating a project in VS Code', 'Installing Express for building APIs on local host port 3000', 'The chapter demonstrates the creation of a movie API using Node.js', 'The APIs allow pulling and pushing data in and out of a variable', 'Testing the API functionality using Postman', 'The API is used to add new movies to the database, resulting in a list of three movie entries', 'Validation is performed using the get command against a specific ID number to filter and retrieve movie details', 'The chapter demonstrates using ExpressJS to build a movie management API', 'Successfully deleting a movie record and confirming the action', 'Creating, searching, and deleting movies using ExpressJS', 'Using ExpressJS to pass JSON effectively back and forth', 'Filtering movie records against an ID and deleting a movie', 'JSON Web Token is a compact, self-contained way of securely transmitting information between parties using a JSON object', 'JWT provides a high level of security through encryption and can be used for passing authentication over HTTP in web applications', 'The structure of a JWT includes the header, payload, and signature, utilizing algorithms like SHA-512 for encryption', 'JWT use cases include authorization for accessing different parts of an application and securely exchanging information in scenarios like blockchain']}, {'end': 17782.384, 'segs': [{'end': 15299.063, 'src': 'embed', 'start': 15267.59, 'weight': 6, 'content': [{'end': 15269.813, 'text': "There's gonna be some tools that we need to get started with.", 'start': 15267.59, 'duration': 2.223}, {'end': 15277.942, 'text': "Node.js is the first, so let's go ahead and find Node.js at nodejs.org, and you can either download Windows, Mac, or Linux code.", 'start': 15269.873, 'duration': 8.069}, {'end': 15282.987, 'text': "obviously you'd install the one that would be for your operating system.", 'start': 15278.803, 'duration': 4.184}, {'end': 15286.17, 'text': 'the next tool that we want to install is a text editor.', 'start': 15282.987, 'duration': 3.183}, {'end': 15289.594, 'text': "we're going to use visual studio code or vs code.", 'start': 15286.17, 'duration': 3.424}, {'end': 15291.816, 'text': 'go to code.visualstudio.com.', 'start': 15289.594, 'duration': 2.222}, {'end': 15292.477, 'text': 'download this.', 'start': 15291.816, 'duration': 0.661}, {'end': 15299.063, 'text': 'this will run on mac, windows and linux, a really great text code editor.', 'start': 15292.477, 'duration': 6.586}], 'summary': 'Get started by installing node.js and visual studio code for coding.', 'duration': 31.473, 'max_score': 15267.59, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE15267590.jpg'}, {'end': 16024.598, 'src': 'embed', 'start': 15962.497, 'weight': 3, 'content': [{'end': 15968.759, 'text': "And we're going to require the token for our Barrett token.", 'start': 15962.497, 'duration': 6.262}, {'end': 15990.086, 'text': 'Send status 403.', 'start': 15986.145, 'duration': 3.941}, {'end': 15994.948, 'text': "Okay So bearer token is what we're going to be calling against to verify our token.", 'start': 15990.086, 'duration': 4.862}, {'end': 15996.728, 'text': "I'll show you how that works in just a moment.", 'start': 15995.208, 'duration': 1.52}, {'end': 16002.571, 'text': 'And this will be to authorize.', 'start': 16000.95, 'duration': 1.621}, {'end': 16012.392, 'text': "And to authorize, we'll need to actually go ahead and Use the token so we can actually put in here.", 'start': 16002.591, 'duration': 9.801}, {'end': 16024.598, 'text': "Alright, so everything's looking pretty good.", 'start': 16012.412, 'duration': 12.186}], 'summary': 'Token authentication process requires bearer token for authorization, encountering status 403, and everything is looking pretty good.', 'duration': 62.101, 'max_score': 15962.497, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE15962497.jpg'}, {'end': 16343.994, 'src': 'embed', 'start': 16312.279, 'weight': 5, 'content': [{'end': 16318.062, 'text': "We're also going to tell you how we're going to connect with node.js and why you'd want to do that with my sequel.", 'start': 16312.279, 'duration': 5.783}, {'end': 16323.525, 'text': "And then finally we're going to do a demo taking you through all the steps on how you can actually do that kind of connection.", 'start': 16318.442, 'duration': 5.083}, {'end': 16332.303, 'text': "So what is MySQL? Well, basically MySQL is probably the world's most popular relational database.", 'start': 16324.696, 'duration': 7.607}, {'end': 16343.994, 'text': 'So if you think of relational databases that are table driven, MySQL is arguably the most popular database out there for RDBMS systems.', 'start': 16332.784, 'duration': 11.21}], 'summary': "Demonstration of connecting node.js with mysql, world's most popular relational database.", 'duration': 31.715, 'max_score': 16312.279, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE16312279.jpg'}, {'end': 16606.828, 'src': 'embed', 'start': 16571.893, 'weight': 14, 'content': [{'end': 16572.234, 'text': 'We do.', 'start': 16571.893, 'duration': 0.341}, {'end': 16572.973, 'text': "So that's great.", 'start': 16572.313, 'duration': 0.66}, {'end': 16579.66, 'text': "And we're going to go npm init, and that's actually going to set up our own node package module.", 'start': 16574.757, 'duration': 4.903}, {'end': 16584.364, 'text': 'And we can actually see that the JSON file for that package has been created.', 'start': 16580.1, 'duration': 4.264}, {'end': 16588.026, 'text': 'So we go in there, we can see that all the defaults selected.', 'start': 16585.044, 'duration': 2.982}, {'end': 16593.66, 'text': "You'll see that index.js is the default file that will be created.", 'start': 16589.898, 'duration': 3.762}, {'end': 16598.163, 'text': "So we're actually going to go ahead and create our own index.js file.", 'start': 16594.141, 'duration': 4.022}, {'end': 16606.828, 'text': "And we're going to add in some instructions into that file to actually install the correct software from the npm package.", 'start': 16598.183, 'duration': 8.645}], 'summary': 'Npm init sets up node package module with default files and index.js for software installation.', 'duration': 34.935, 'max_score': 16571.893, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE16571893.jpg'}, {'end': 16772.556, 'src': 'embed', 'start': 16740.324, 'weight': 4, 'content': [{'end': 16745.107, 'text': 'And we want to connect to the local host in this instance.', 'start': 16740.324, 'duration': 4.783}, {'end': 16754.901, 'text': 'And user is just going to be a root user account, which is the standard user account that comes from MySQL.', 'start': 16747.474, 'duration': 7.427}, {'end': 16761.407, 'text': "There is no password for the root user when you're running it locally, but I encourage you to change that as quickly as you can,", 'start': 16755.482, 'duration': 5.925}, {'end': 16765.509, 'text': "because you don't really want to have a password-free environment.", 'start': 16761.407, 'duration': 4.102}, {'end': 16772.556, 'text': 'And now we want to be able to then connect to the MySQL environment.', 'start': 16767.111, 'duration': 5.445}], 'summary': 'Connect to local host with root user account in mysql, no password initially, but change it for security.', 'duration': 32.232, 'max_score': 16740.324, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE16740324.jpg'}, {'end': 17125.133, 'src': 'embed', 'start': 17084.276, 'weight': 8, 'content': [{'end': 17092.562, 'text': "it's going to create a table, has the employee fields, which is going to have an ID, which will be an integer that will go into auto increment.", 'start': 17084.276, 'duration': 8.286}, {'end': 17094.403, 'text': "They'll have a name field.", 'start': 17093.062, 'duration': 1.341}, {'end': 17097.906, 'text': "And we'll also put in a designation field.", 'start': 17095.704, 'duration': 2.202}, {'end': 17115.31, 'text': 'and that will have a primary key as well.', 'start': 17108.527, 'duration': 6.783}, {'end': 17125.133, 'text': "keep it very simple for right now and let's just put our db connection so that everything connects effectively.", 'start': 17115.31, 'duration': 9.823}], 'summary': 'Creating a table with employee fields including id and name, and connecting to the database.', 'duration': 40.857, 'max_score': 17084.276, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE17084276.jpg'}, {'end': 17224.757, 'src': 'embed', 'start': 17193.411, 'weight': 0, 'content': [{'end': 17194.612, 'text': 'So database has a name.', 'start': 17193.411, 'duration': 1.201}, {'end': 17200.357, 'text': "And because we've got Node MySQL, there's no fields in there yet.", 'start': 17196.934, 'duration': 3.423}, {'end': 17202.299, 'text': "So let's go ahead and..", 'start': 17201.018, 'duration': 1.281}, {'end': 17209.391, 'text': "and put in create employee fields and that's run the function that creates the new table.", 'start': 17203.729, 'duration': 5.662}, {'end': 17214.053, 'text': 'And then voila, we have a new table.', 'start': 17210.312, 'duration': 3.741}, {'end': 17220.896, 'text': 'And so the next action we want to do is actually populate the table with a record.', 'start': 17215.093, 'duration': 5.803}, {'end': 17224.757, 'text': 'So this starts becoming familiar.', 'start': 17222.496, 'duration': 2.261}], 'summary': 'Using node mysql to create and populate a new table with employee records.', 'duration': 31.346, 'max_score': 17193.411, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE17193411.jpg'}], 'start': 15237.273, 'title': 'Node.js and express for secure data transfer', 'summary': 'Covers creating jwt with node.js, express, and postman for token generation, setting up an api with jwt for secure data transfer, connecting node.js with mysql, setting up visual studio code, and managing mysql database in node.js, emphasizing secure data transfer and easy integration with mysql.', 'chapters': [{'end': 15636.989, 'start': 15237.273, 'title': 'Creating jwt with node.js & express', 'summary': 'Illustrates how to create a demo using node.js, express, and postman for jwt token generation, while also including installation steps for necessary tools and setting up a project.', 'duration': 399.716, 'highlights': ['The chapter illustrates how to create a demo using Node.js, Express, and Postman for JWT token generation. Node.js, Express, and Postman are used to create a demo for JWT token generation.', 'The installation steps for necessary tools such as Node.js, Visual Studio Code, and Postman are demonstrated. Instructions for installing Node.js, Visual Studio Code, and Postman are provided.', 'Setting up a project using npm to initialize the folder for Node and installing Express and JSON Web Token for creating APIs is explained. Demonstration of setting up a project using npm and installing Express and JSON Web Token for creating APIs.']}, {'end': 16311.919, 'start': 15638.61, 'title': 'Creating api with jwt for secure data transfer', 'summary': 'Covers the creation of an api with jwt for secure data transfer, including creating random user data, generating and verifying jwt tokens, and using them for secure data transfer across applications, all running on port 3000.', 'duration': 673.309, 'highlights': ['Creating array of random user data The chapter explains creating an array of random user data with an ID, username, and email.', 'Generating and responding with JWT token It covers the process of generating a JWT token using a secret key and responding with the token in JSON format.', 'Verifying JWT token for secure data transfer It details the process of verifying a JWT token and using it for secure data transfer across different applications.']}, {'end': 16473.429, 'start': 16312.279, 'title': 'Connecting node.js with mysql', 'summary': "Discusses connecting node.js with mysql, highlighting mysql's popularity as the world's leading open-source relational database, its long-standing presence, and the benefits of integrating node.js with mysql for building web applications. it also covers the ease of use, absence of licensing costs, and the ability to handle large data sets efficiently.", 'duration': 161.15, 'highlights': ["MySQL is the world's most popular relational database MySQL is arguably the most popular database for RDBMS systems, with companies of all sizes using it, and it is open source with no licensing costs.", 'Node.js is an architecture framework for building web applications Node.js is a framework for web application development, and the integration with MySQL offers benefits due to the differences between the two products.', 'MySQL is open source with no licensing costs MySQL is an open-source relational database, allowing free usage without any licensing costs, making it an attractive option compared to other solutions.', 'MySQL is a mature and powerful open-source program MySQL is a mature open-source program, having been around for more than 15 years, with a significant investment, structured, and powerful, enabling efficient handling of large data sets.', 'Node.js and MySQL can be used to work with huge amounts of data quickly The integration of Node.js and MySQL allows for the efficient handling of large data sets, enabling quick processing and manipulation of data.']}, {'end': 16695.547, 'start': 16474.59, 'title': 'Setting up visual studio code and installing node.js packages', 'summary': 'Outlines the process of setting up visual studio code, installing node.js packages, and validating the installation of xampp, with key steps including downloading and installing visual studio code, creating a new folder, initializing a node package module with npm, creating and installing node.js packages, and validating the installation of xampp.', 'duration': 220.957, 'highlights': ['Setting up Visual Studio Code and installing Node.js packages The chapter outlines the process of setting up Visual Studio Code, installing Node.js packages, and validating the installation of XAMPP.', 'Downloading and installing Visual Studio Code The chapter emphasizes the importance of Visual Studio Code as an integrated development environment and encourages the use of this free open source solution for building applications.', "Creating and installing node.js packages The process of creating and installing node.js packages, such as Express and MySQL, is detailed, including using npm's default commands for creating and installing these packages.", 'Validating the installation of XAMPP The chapter guides in validating the installation of XAMPP, ensuring the installation of MySQL and Apache, and the ability to start and stop services with XAMPP.']}, {'end': 17782.384, 'start': 16695.909, 'title': 'Node.js mysql database management', 'summary': 'Demonstrates setting up a mysql database connection, creating a database and table, inserting records, querying, updating, and deleting data in node.js with mysql, emphasizing the importance of securing the root user account and the functionalities of the created database and table.', 'duration': 1086.475, 'highlights': ['The chapter demonstrates connecting to a MySQL database, creating a database and table, and inserting records in Node.js with MySQL.', 'Emphasizes the importance of securing the root user account when running MySQL locally to prevent a password-free environment.', 'Shows the process of querying, updating, and deleting data in the created database and table through Node.js with MySQL.']}], 'duration': 2545.111, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE15237273.jpg', 'highlights': ['The chapter illustrates how to create a demo using Node.js, Express, and Postman for JWT token generation.', 'Setting up a project using npm to initialize the folder for Node and installing Express and JSON Web Token for creating APIs is explained.', 'Instructions for installing Node.js, Visual Studio Code, and Postman are provided.', 'Creating array of random user data with an ID, username, and email is explained.', 'Generating and responding with JWT token is covered.', 'Verifying JWT token for secure data transfer is detailed.', 'MySQL is arguably the most popular database for RDBMS systems, with companies of all sizes using it, and it is open source with no licensing costs.', 'Node.js is a framework for web application development, and the integration with MySQL offers benefits due to the differences between the two products.', 'MySQL is a mature open-source program, having been around for more than 15 years, with a significant investment, structured, and powerful, enabling efficient handling of large data sets.', 'The integration of Node.js and MySQL allows for the efficient handling of large data sets, enabling quick processing and manipulation of data.', 'The chapter outlines the process of setting up Visual Studio Code, installing Node.js packages, and validating the installation of XAMPP.', 'The chapter emphasizes the importance of Visual Studio Code as an integrated development environment and encourages the use of this free open source solution for building applications.', "The process of creating and installing node.js packages, such as Express and MySQL, is detailed, including using npm's default commands for creating and installing these packages.", 'The chapter demonstrates connecting to a MySQL database, creating a database and table, and inserting records in Node.js with MySQL.', 'Emphasizes the importance of securing the root user account when running MySQL locally to prevent a password-free environment.', 'Shows the process of querying, updating, and deleting data in the created database and table through Node.js with MySQL.']}, {'end': 19250.007, 'segs': [{'end': 18139.124, 'src': 'embed', 'start': 18087.298, 'weight': 2, 'content': [{'end': 18093.56, 'text': 'So again, as you start working with some of our other videos that we have here,', 'start': 18087.298, 'duration': 6.262}, {'end': 18099.242, 'text': "you'll be able to see how all of these tools really complement each other.", 'start': 18093.56, 'duration': 5.682}, {'end': 18103.883, 'text': "So we've done an introduction on MongoDB.", 'start': 18099.702, 'duration': 4.181}, {'end': 18109.265, 'text': 'Really, the best thing now is to get your hands dirty by actually doing a demo.', 'start': 18104.524, 'duration': 4.741}, {'end': 18110.586, 'text': "So we're going to go through a demo.", 'start': 18109.305, 'duration': 1.281}, {'end': 18119.709, 'text': "What I would strongly encourage you, however, though, is that this demo really does build on a lot of the other videos that we've done in this series.", 'start': 18111.086, 'duration': 8.623}, {'end': 18131.618, 'text': 'So you really do want to spend some time on the Node.js video, the Node.js for Express video, the Node.js for APIs video.', 'start': 18120.449, 'duration': 11.169}, {'end': 18139.124, 'text': "Really, all of those videos help complement the work that you'll be doing with this video here.", 'start': 18132.198, 'duration': 6.926}], 'summary': 'Videos complement each other to build skills in mongodb and node.js.', 'duration': 51.826, 'max_score': 18087.298, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE18087298.jpg'}, {'end': 18348.451, 'src': 'embed', 'start': 18316.783, 'weight': 0, 'content': [{'end': 18318.445, 'text': "It's going to create our default package.", 'start': 18316.783, 'duration': 1.662}, {'end': 18319.986, 'text': "And we're going to hit return.", 'start': 18318.785, 'duration': 1.201}, {'end': 18321.908, 'text': "That's going to go ahead and start the process.", 'start': 18320.006, 'duration': 1.902}, {'end': 18329.934, 'text': "And we're just going to go with the default settings that npm is going to give.", 'start': 18323.909, 'duration': 6.025}, {'end': 18334.598, 'text': 'So just hit return, return, return a few times, and that will get up and running for you.', 'start': 18329.974, 'duration': 4.624}, {'end': 18339.734, 'text': 'And our entry point for the application is going to be index.js.', 'start': 18337.438, 'duration': 2.296}, {'end': 18348.451, 'text': "Now yeah, that's our JS package and there we have everything.", 'start': 18344.11, 'duration': 4.341}], 'summary': 'Setting up default package with npm, using index.js as entry point.', 'duration': 31.668, 'max_score': 18316.783, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE18316783.jpg'}, {'end': 18816.415, 'src': 'embed', 'start': 18769.033, 'weight': 1, 'content': [{'end': 18770.954, 'text': 'And there we see, welcome to the student database.', 'start': 18769.033, 'duration': 1.921}, {'end': 18774.776, 'text': 'Click on the database and you click on, if we clicked on it now, nothing will happen.', 'start': 18771.174, 'duration': 3.602}, {'end': 18776.036, 'text': 'So yeah, nothing there.', 'start': 18774.816, 'duration': 1.22}, {'end': 18779.958, 'text': "So let's make something happen.", 'start': 18778.257, 'duration': 1.701}, {'end': 18783.9, 'text': 'Okay All right.', 'start': 18779.978, 'duration': 3.922}, {'end': 18786.921, 'text': "So let's begin extending our app.", 'start': 18784.14, 'duration': 2.781}, {'end': 18798.546, 'text': "So what we're going to do is we want to set the views and we'll do a join.", 'start': 18787.001, 'duration': 11.545}, {'end': 18813.633, 'text': 'on our directory name and app engine.', 'start': 18801.744, 'duration': 11.889}, {'end': 18816.415, 'text': "So let's go for our views.", 'start': 18815.034, 'duration': 1.381}], 'summary': 'Extending the student database app to set views and perform a join on directory name and app engine.', 'duration': 47.382, 'max_score': 18769.033, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE18769033.jpg'}], 'start': 17788.287, 'title': 'Connecting node.js to mongodb', 'summary': 'Explains how to connect node.js to mongodb, highlighting the benefits of mongodb, its role in the mern stack, its scalability, and its relevance to big data and modern applications.', 'chapters': [{'end': 18087.298, 'start': 17788.287, 'title': 'Connecting node.js to mongodb', 'summary': 'Explains how to connect node.js to mongodb, highlighting the benefits of mongodb, its role in the mern stack, its scalability, and its relevance to big data and modern applications.', 'duration': 299.011, 'highlights': ['MongoDB is a flexible, cross-platform NoSQL database, suitable for modern applications, and is part of the MERN stack. MongoDB is a popular NoSQL database, cross-platform, scalable, and part of the MERN stack, making it suitable for modern applications.', 'MongoDB is designed for building mobile applications and websites that scale into millions of users, offering high performance and scalability. MongoDB is designed for building scalable mobile applications and websites, offering high performance and scalability for millions of users.', 'MongoDB is front and center for big data, allowing effective content management and delivery, mobile and social infrastructure, and easy data management through Mongoose. MongoDB is crucial for big data, enabling effective content management, mobile and social infrastructure, and easy data management through Mongoose.', 'MERN stack comprises MongoDB, Express, React, and Node.js, designed for modern single-page applications, making it easy to build modern solutions. The MERN stack includes MongoDB, Express, React, and Node.js, designed for modern single-page applications, making it easy to build modern solutions.']}, {'end': 18251.766, 'start': 18087.298, 'title': 'Using mongodb with node.js', 'summary': 'Provides guidance on using mongodb with node.js, emphasizing the importance of complementing videos, and the installation process for node.js, visual studio code, and mongodb.', 'duration': 164.468, 'highlights': ['The chapter strongly encourages complementing videos to understand the demo, including Node.js, Node.js for Express, and Node.js for APIs, to facilitate learning and understanding. ', 'The installation process involves downloading Node.js from nodejs.org, which supports multiple platforms like Windows, Linux, and Mac OS, and provides the option for the original source code. ', 'The chapter suggests installing the Visual Studio Code, an open-source text editor that runs on multiple platforms and provides a wide range of extensions for editing purposes. ', 'The installation of MongoDB involves visiting mongodb.com, selecting the MongoDB Community Server, choosing the platform, and downloading the installation file. ']}, {'end': 18915.394, 'start': 18252.226, 'title': 'Setting up mongodb and express in vs code', 'summary': 'Details the process of setting up and configuring mongodb and express in vs code, including creating folders, initializing package, installing required solutions, creating a web page, and connecting to mongodb, with a focus on using express handlebars for web application development.', 'duration': 663.168, 'highlights': ['The chapter details the process of setting up and configuring MongoDB and Express in VS Code. Setting up and configuring MongoDB and Express in VS Code', 'Creating folders, initializing package, and installing required solutions like Express, path, handlebars, express handlebars, and body parser. Creating folders, initializing package, and installing required solutions', 'Creating a basic web page and connecting to MongoDB. Creating a basic web page and connecting to MongoDB', 'Using Express Handlebars for separating content from layout in web application development. Using Express Handlebars for web application development']}, {'end': 19250.007, 'start': 18915.394, 'title': 'Setting up mongoose and creating a student model', 'summary': 'Outlines the process of setting up mongoose to connect to mongodb, creating a database, and defining a student model with specific fields such as full name, email, mobile phone number, and city.', 'duration': 334.613, 'highlights': ['The chapter explains the process of setting up Mongoose to connect to MongoDB and create a database called studentDB.', 'It details the structure of the student model, including specific fields such as full name, email, mobile phone number, and city using Mongoose Express.', 'The chapter also covers the installation of Mongoose using npm and the creation of a new folder called layouts under views for splitting layouts.']}], 'duration': 1461.72, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE17788287.jpg', 'highlights': ['MongoDB is crucial for big data, enabling effective content management, mobile and social infrastructure, and easy data management through Mongoose.', 'MongoDB is designed for building scalable mobile applications and websites, offering high performance and scalability for millions of users.', 'The MERN stack includes MongoDB, Express, React, and Node.js, designed for modern single-page applications, making it easy to build modern solutions.', 'The installation process involves downloading Node.js from nodejs.org, which supports multiple platforms like Windows, Linux, and Mac OS, and provides the option for the original source code.', 'The chapter details the process of setting up and configuring MongoDB and Express in VS Code.', 'The chapter explains the process of setting up Mongoose to connect to MongoDB and create a database called studentDB.']}, {'end': 21433.383, 'segs': [{'end': 19344.625, 'src': 'embed', 'start': 19301.189, 'weight': 10, 'content': [{'end': 19306.091, 'text': 'And that new file is going to be called studentcontroller.js.', 'start': 19301.189, 'duration': 4.902}, {'end': 19310.974, 'text': "Let's go in and see what we're going to add here.", 'start': 19306.111, 'duration': 4.863}, {'end': 19317.156, 'text': "So we want to import, make sure we're running Express.", 'start': 19310.994, 'duration': 6.162}, {'end': 19320.298, 'text': 'So Express is required for our controller.', 'start': 19318.337, 'duration': 1.961}, {'end': 19329.496, 'text': 'We also want to set up a variable for router.', 'start': 19325.034, 'duration': 4.462}, {'end': 19332.738, 'text': 'So router express dot router.', 'start': 19330.997, 'duration': 1.741}, {'end': 19340.583, 'text': "And we want to make sure we're also connecting with Mongoose.", 'start': 19338.001, 'duration': 2.582}, {'end': 19344.625, 'text': 'So we have a connection to MongoDB.', 'start': 19341.623, 'duration': 3.002}], 'summary': 'Creating studentcontroller.js to run express, set up router, and connect with mongoose for mongodb.', 'duration': 43.436, 'max_score': 19301.189, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE19301189.jpg'}, {'end': 20006.242, 'src': 'embed', 'start': 19951.061, 'weight': 5, 'content': [{'end': 19955.991, 'text': "And so what we're going to do is we're going to find our student record, and we're going to find it by ID.", 'start': 19951.061, 'duration': 4.93}, {'end': 19959.979, 'text': "And then we'll do find by find ID and remove.", 'start': 19957.093, 'duration': 2.886}, {'end': 19983.447, 'text': "Okay, so once we've removed the record, we're going to redirect to our list so we can show our student list.", 'start': 19976.403, 'duration': 7.044}, {'end': 19989.97, 'text': "Otherwise, we'll send an error message to our console log.", 'start': 19983.467, 'duration': 6.503}, {'end': 20002.517, 'text': 'Okay, so I think we have what we need.', 'start': 19998.555, 'duration': 3.962}, {'end': 20006.242, 'text': "Maybe there's one more thing.", 'start': 20004.161, 'duration': 2.081}], 'summary': 'Finding and removing student records by id, redirecting to list, handling errors.', 'duration': 55.181, 'max_score': 19951.061, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE19951061.jpg'}, {'end': 20440.858, 'src': 'embed', 'start': 20377.502, 'weight': 7, 'content': [{'end': 20387.23, 'text': "So where we have name there will actually match up with the value that we're putting in our model.", 'start': 20377.502, 'duration': 9.728}, {'end': 20390.753, 'text': 'So here we have student for name.', 'start': 20388.571, 'duration': 2.182}, {'end': 20395.738, 'text': "So we're matching everything up to the model that we created.", 'start': 20393.576, 'duration': 2.162}, {'end': 20418.606, 'text': "okay, so let's do this for our remaining form elements and again, as you see, we can put this together really quickly.", 'start': 20404.443, 'duration': 14.163}, {'end': 20440.858, 'text': "So I'm going to put in as well the email and then we'll do mobile and city.", 'start': 20433.26, 'duration': 7.598}], 'summary': 'Matching form elements to model; adding email, mobile, and city.', 'duration': 63.356, 'max_score': 20377.502, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE20377502.jpg'}, {'end': 20667.815, 'src': 'embed', 'start': 20589.215, 'weight': 1, 'content': [{'end': 20595.358, 'text': "And we're matching up our values with our records.", 'start': 20589.215, 'duration': 6.143}, {'end': 20607.142, 'text': 'And we want to have a button that allows you to submit.', 'start': 20604.183, 'duration': 2.959}, {'end': 20641.092, 'text': 'We also want to have a button to select view all if you want to be able to view all the records.', 'start': 20635.629, 'duration': 5.463}, {'end': 20647.055, 'text': 'Okay Looking good.', 'start': 20641.993, 'duration': 5.062}, {'end': 20651.498, 'text': "Okay Let's go back over to list.", 'start': 20647.075, 'duration': 4.423}, {'end': 20653.959, 'text': 'Now we want to be able to pull our records.', 'start': 20651.558, 'duration': 2.401}, {'end': 20663.725, 'text': 'So this will display the list of students in a table.', 'start': 20654.34, 'duration': 9.385}, {'end': 20667.815, 'text': 'And great.', 'start': 20666.654, 'duration': 1.161}], 'summary': 'Developing a system to display student records in a table with submit and view all buttons.', 'duration': 78.6, 'max_score': 20589.215, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE20589215.jpg'}, {'end': 20808.202, 'src': 'embed', 'start': 20775.388, 'weight': 2, 'content': [{'end': 20784.481, 'text': "And again, what we're doing is we're pulling in the values to be able to pulled from the model that we created earlier on.", 'start': 20775.388, 'duration': 9.093}, {'end': 20787.924, 'text': "So this being the data that's been submitted.", 'start': 20785.081, 'duration': 2.843}, {'end': 20795.47, 'text': "So we're going to have it pull in the value for the email full name and mobile and city.", 'start': 20787.944, 'duration': 7.526}, {'end': 20799.354, 'text': "We're not going to show ID.", 'start': 20797.672, 'duration': 1.682}, {'end': 20808.202, 'text': "So it's pulling out all of this data that we created earlier on.", 'start': 20805.519, 'duration': 2.683}], 'summary': 'Pulling values for email, full name, mobile, and city from the model.', 'duration': 32.814, 'max_score': 20775.388, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE20775388.jpg'}, {'end': 21086.787, 'src': 'embed', 'start': 21044.813, 'weight': 0, 'content': [{'end': 21047.333, 'text': "Let's go check out where our error came from.", 'start': 21044.813, 'duration': 2.52}, {'end': 21052.495, 'text': "So let's go to our files.", 'start': 21047.353, 'duration': 5.142}, {'end': 21055.223, 'text': 'This is one that we created.', 'start': 21054.002, 'duration': 1.221}, {'end': 21062.508, 'text': 'So error is in stream controller.', 'start': 21056.124, 'duration': 6.384}, {'end': 21072.035, 'text': "Let's see, where's the error? Oh, we need to export our module to our router.", 'start': 21063.209, 'duration': 8.826}, {'end': 21076.979, 'text': "All right, let's go open up Mongo database.", 'start': 21072.055, 'duration': 4.924}, {'end': 21083.123, 'text': 'We can just start seeing where the records are.', 'start': 21080.181, 'duration': 2.942}, {'end': 21086.787, 'text': 'installing release updates here.', 'start': 21085.166, 'duration': 1.621}], 'summary': 'Identified error in stream controller, exported module to router, and accessed mongo database for records.', 'duration': 41.974, 'max_score': 21044.813, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE21044813.jpg'}, {'end': 21433.383, 'src': 'embed', 'start': 21355.396, 'weight': 3, 'content': [{'end': 21363.799, 'text': "And, oh, it has, couldn't grab that record.", 'start': 21355.396, 'duration': 8.403}, {'end': 21365.86, 'text': "Okay, so let's go back and look at my code.", 'start': 21363.899, 'duration': 1.961}, {'end': 21379.425, 'text': "And because we have everything separated and actually now just go to our student controller And we'll find our delete.", 'start': 21369.441, 'duration': 9.984}, {'end': 21382.426, 'text': 'There goes delete.', 'start': 21380.145, 'duration': 2.281}, {'end': 21387.709, 'text': 'And we had a couple of minor errors there.', 'start': 21382.446, 'duration': 5.263}, {'end': 21390.23, 'text': "This is where it's good to test out your code.", 'start': 21387.729, 'duration': 2.501}, {'end': 21393.892, 'text': "Okay Let's run that again.", 'start': 21391.751, 'duration': 2.141}, {'end': 21400.815, 'text': 'And refresh everything.', 'start': 21393.912, 'duration': 6.903}, {'end': 21405.317, 'text': 'So we go to our database.', 'start': 21400.835, 'duration': 4.482}, {'end': 21406.698, 'text': "We're going to go create new entry.", 'start': 21405.377, 'duration': 1.321}, {'end': 21411.245, 'text': "Let's call this one St. John, john.gmail.com.", 'start': 21408.123, 'duration': 3.122}, {'end': 21413.727, 'text': "We'll put in the phone number.", 'start': 21412.466, 'duration': 1.261}, {'end': 21423.115, 'text': 'You see that the formatting is just playing from our bootstrap.', 'start': 21413.747, 'duration': 9.368}, {'end': 21423.975, 'text': 'So there we are.', 'start': 21423.415, 'duration': 0.56}, {'end': 21424.616, 'text': "There's John.", 'start': 21424.015, 'duration': 0.601}, {'end': 21426.597, 'text': "Do we want to delete? Let's say yes.", 'start': 21424.996, 'duration': 1.601}, {'end': 21428.399, 'text': 'Yeah, easy.', 'start': 21426.618, 'duration': 1.781}, {'end': 21428.999, 'text': 'There we go.', 'start': 21428.579, 'duration': 0.42}, {'end': 21429.46, 'text': 'All solved.', 'start': 21429.039, 'duration': 0.421}, {'end': 21431.621, 'text': 'And we hit refresh.', 'start': 21430.581, 'duration': 1.04}, {'end': 21432.602, 'text': 'The record should be gone.', 'start': 21431.661, 'duration': 0.941}, {'end': 21433.383, 'text': 'Yep, it is.', 'start': 21432.762, 'duration': 0.621}], 'summary': 'Debugging and testing code to delete a record from the database. successfully removed a record named john.', 'duration': 77.987, 'max_score': 21355.396, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE21355396.jpg'}], 'start': 19250.027, 'title': 'Student record management system', 'summary': 'Focuses on setting up the student controller in node.js, managing student records, creating a web page layout with bootstrap, and building a student record management system with specific details about record creation and deletion.', 'chapters': [{'end': 19510.886, 'start': 19250.027, 'title': 'Setting up student controller in node.js', 'summary': 'Focuses on setting up the student controller in node.js, including creating a new folder for controllers, connecting with mongoose and mongodb, and setting up routes for adding or editing student records.', 'duration': 260.859, 'highlights': ['Creating a new folder called controllers and a file named studentcontroller.js', 'Connecting with Mongoose and MongoDB to ensure a connection to the student model', 'Setting up routes for viewing, adding, and editing student records using Express and handlebars']}, {'end': 20006.242, 'start': 19510.886, 'title': 'Managing student records with node.js', 'summary': 'Demonstrates the process of inserting, updating, displaying, and deleting student records in a database using node.js, emphasizing the importance of error handling and modular code.', 'duration': 495.356, 'highlights': ['The chapter covers the process of inserting, updating, and saving student records with examples using a sample JSON package, streamlining the record management process in Node.js.', 'The chapter emphasizes the significance of error handling, including managing and reporting error messages, to ensure the robustness of the code and user experience.', 'The demonstration highlights the repetitive nature of the work, emphasizing the benefits of creating modular code to simplify code management and updates in Node.js.', 'The chapter illustrates the process of finding and deleting student records by ID, showcasing the use of find by ID and remove to efficiently manage the database in Node.js.']}, {'end': 20536.957, 'start': 20006.262, 'title': 'Web page layout with bootstrap', 'summary': 'Discusses creating a web page layout using bootstrap, including adding css components and form elements, leveraging the open-source framework originally developed by twitter, and utilizing bootstrap classes and ids for structuring the content.', 'duration': 530.695, 'highlights': ['The chapter discusses creating a web page layout using Bootstrap. The main focus of the chapter is on creating a web page layout using Bootstrap.', 'Adding CSS components and form elements. The process includes adding CSS components and form elements to the web page.', 'Leveraging the open-source framework originally developed by Twitter. Bootstrap, an open-source framework originally developed by Twitter, is utilized for creating the web page layout.', 'Utilizing Bootstrap classes and IDs for structuring the content. The usage of Bootstrap classes and IDs for structuring the content is emphasized in the chapter.']}, {'end': 20933.262, 'start': 20539.7, 'title': 'Building student record management system', 'summary': 'Demonstrates the process of building a student record management system, including creating, formatting, and displaying student records in a table with options to add, edit, and delete records.', 'duration': 393.562, 'highlights': ['The chapter demonstrates the process of creating, formatting, and displaying student records in a table, including options to add, edit, and delete records.', 'The process involves pulling values from a model, such as email, full name, mobile, and city, and posting them into a list as documents.', 'The demonstration includes adding buttons at the bottom of the table to add or delete records from the database, with a confirmation prompt for deletion.']}, {'end': 21433.383, 'start': 20933.282, 'title': 'Managing database and application navigation', 'summary': 'Covers setting up a database with mongoose, connecting to a localhost port, creating a database, and navigating through the application to add, edit, and delete records, with specific details about record creation and deletion.', 'duration': 500.101, 'highlights': ['Setting up a database with Mongoose for connecting to Mongo The speaker sets up a database using Mongoose to connect to Mongo, ensuring successful database connection.', 'Navigating through the application to add, edit, and delete records The process of adding, editing, and deleting records is demonstrated, with specific details about the actions taken and their outcomes.', "Creating a database with case-sensitive name 'student DB' and a collection named 'students' A database named 'student DB' with a case-sensitive name and a collection named 'students' is created, leading to successful database creation and record storage.", 'Connecting to localhost and port for database setup The speaker connects to localhost and specifies the port for setting up the database, ensuring that the database is aligned and running on the specified port.']}], 'duration': 2183.356, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE19250027.jpg', 'highlights': ['Setting up routes for viewing, adding, and editing student records using Express and handlebars', 'The chapter covers the process of inserting, updating, and saving student records with examples using a sample JSON package, streamlining the record management process in Node.js', 'The chapter illustrates the process of finding and deleting student records by ID, showcasing the use of find by ID and remove to efficiently manage the database in Node.js', 'Creating a web page layout using Bootstrap, including adding CSS components and form elements', 'The chapter demonstrates the process of creating, formatting, and displaying student records in a table, including options to add, edit, and delete records', 'Setting up a database with Mongoose for connecting to Mongo, ensuring successful database connection', 'Navigating through the application to add, edit, and delete records, with specific details about the actions taken and their outcomes', "Creating a database with case-sensitive name 'student DB' and a collection named 'students', leading to successful database creation and record storage", 'Connecting to localhost and port for database setup, ensuring that the database is aligned and running on the specified port', 'Emphasizing the benefits of creating modular code to simplify code management and updates in Node.js', 'The chapter emphasizes the significance of error handling, including managing and reporting error messages, to ensure the robustness of the code and user experience']}, {'end': 24340.389, 'segs': [{'end': 22070.826, 'src': 'embed', 'start': 22005.118, 'weight': 14, 'content': [{'end': 22008.34, 'text': 'if you have your git repository, you can add yours.', 'start': 22005.118, 'duration': 3.222}, {'end': 22020.732, 'text': 'enter enter author.', 'start': 22008.34, 'duration': 12.392}, {'end': 22023.514, 'text': 'click learn license.', 'start': 22020.732, 'duration': 2.782}, {'end': 22025.556, 'text': 'enter press yes.', 'start': 22023.514, 'duration': 2.042}, {'end': 22033.203, 'text': 'After this, you can see NPM created a JSON file.', 'start': 22029.039, 'duration': 4.164}, {'end': 22041.254, 'text': 'Now we will finally install ExpressJS.', 'start': 22038.613, 'duration': 2.641}, {'end': 22057.699, 'text': 'We will write npm install express enter.', 'start': 22042.054, 'duration': 15.645}, {'end': 22064.481, 'text': 'Now, as you can see, our Express is installed in our system.', 'start': 22061.14, 'duration': 3.341}, {'end': 22070.826, 'text': "Let's open the app.js that we have created earlier.", 'start': 22067.403, 'duration': 3.423}], 'summary': 'Setup git repository, add author, license, install expressjs via npm.', 'duration': 65.708, 'max_score': 22005.118, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE22005118.jpg'}, {'end': 22386.976, 'src': 'embed', 'start': 22352.046, 'weight': 15, 'content': [{'end': 22354.987, 'text': 'Now ExpressJS GET method.', 'start': 22352.046, 'duration': 2.941}, {'end': 22364.52, 'text': 'Get is a method that is used to request data from the server, but mainly this method is used to read data.', 'start': 22356.673, 'duration': 7.847}, {'end': 22369.505, 'text': 'To handle get request in Express is pretty straightforward.', 'start': 22365.701, 'duration': 3.804}, {'end': 22380.135, 'text': "Get requests are to be cached and remains in the browser history, and that's why the get method is not used for sensitive data.", 'start': 22370.706, 'duration': 9.429}, {'end': 22386.976, 'text': 'to get the data, we add parameters in the URL and get data in response.', 'start': 22381.155, 'duration': 5.821}], 'summary': 'Expressjs get method is used to request and read data from the server. parameters are added in the url to retrieve data in response.', 'duration': 34.93, 'max_score': 22352.046, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE22352046.jpg'}, {'end': 22763.94, 'src': 'embed', 'start': 22704.764, 'weight': 0, 'content': [{'end': 22716.387, 'text': 'here I will write post method and here I will write the localhost 4000 and the post request method.', 'start': 22704.764, 'duration': 11.623}, {'end': 22720.749, 'text': 'then we will press send.', 'start': 22716.387, 'duration': 4.362}, {'end': 22729.587, 'text': 'here in the body part We will see hello, this is successful post request.', 'start': 22720.749, 'duration': 8.838}, {'end': 22739.134, 'text': 'How this is working is because post method is secure and data is passed in the request body and it cannot be fetched in the URL.', 'start': 22730.567, 'duration': 8.567}, {'end': 22747.84, 'text': "What is middleware? Middleware is a request handler that has access to the application's request response cycle.", 'start': 22741.596, 'duration': 6.244}, {'end': 22753.645, 'text': 'It is a function that contains the request subjects, response object and the next middleware function.', 'start': 22748.341, 'duration': 5.304}, {'end': 22758.578, 'text': 'Middleware can also send the response to the server before the request.', 'start': 22754.517, 'duration': 4.061}, {'end': 22763.94, 'text': 'The next middleware function is commonly donated by the variable named next.', 'start': 22759.419, 'duration': 4.521}], 'summary': 'Post method allows secure data passing, middleware manages request cycle.', 'duration': 59.176, 'max_score': 22704.764, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE22704764.jpg'}, {'end': 22820.629, 'src': 'embed', 'start': 22791.769, 'weight': 8, 'content': [{'end': 22794.251, 'text': 'It can call the next middleware function in the stack.', 'start': 22791.769, 'duration': 2.482}, {'end': 22800.314, 'text': 'We use these functions to modify our middleware to perform many tasks,', 'start': 22795.371, 'duration': 4.943}, {'end': 22808.079, 'text': 'like if you want to block our site from some country or if you want to check the authentication of a user, etc.', 'start': 22800.314, 'duration': 7.765}, {'end': 22815.285, 'text': 'choose from over 300 in-demand skills and get access to 1000 plus hours of video content for free.', 'start': 22808.82, 'duration': 6.465}, {'end': 22817.247, 'text': 'visit skill up by simply learn.', 'start': 22815.285, 'duration': 1.962}, {'end': 22820.629, 'text': 'click on the link in the description to know more.', 'start': 22817.247, 'duration': 3.382}], 'summary': 'Middleware functions enable various tasks, such as blocking sites and user authentication. over 300 skills available with 1000+ hours of video content. visit skill up by simply learn for more information.', 'duration': 28.86, 'max_score': 22791.769, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE22791769.jpg'}, {'end': 22904.085, 'src': 'embed', 'start': 22847.791, 'weight': 3, 'content': [{'end': 22850.372, 'text': 'you can take the help of our video.', 'start': 22847.791, 'duration': 2.581}, {'end': 22851.792, 'text': 'what is express.js?', 'start': 22850.372, 'duration': 1.42}, {'end': 22854.033, 'text': 'the link will be in the description.', 'start': 22851.792, 'duration': 2.241}, {'end': 22858.055, 'text': 'you need to install npm express to run this.', 'start': 22854.033, 'duration': 4.022}, {'end': 22868.749, 'text': 'so coming back to our application, first we need const express application.', 'start': 22858.055, 'duration': 10.694}, {'end': 22874.731, 'text': "so we'll write constant express.", 'start': 22868.749, 'duration': 5.982}, {'end': 22886.394, 'text': 'require express.', 'start': 22874.731, 'duration': 11.663}, {'end': 22891.975, 'text': "now we'll write constant app equals to express.", 'start': 22886.394, 'duration': 5.581}, {'end': 22904.085, 'text': "now to get the data we'll write app dot.", 'start': 22898.641, 'duration': 5.444}], 'summary': 'Introduction to installing and using express.js for application development.', 'duration': 56.294, 'max_score': 22847.791, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE22847791.jpg'}, {'end': 23508.18, 'src': 'embed', 'start': 23478.817, 'weight': 4, 'content': [{'end': 23484.118, 'text': 'Now, we will install the famous web framework module of nodejs.', 'start': 23478.817, 'duration': 5.301}, {'end': 23500.516, 'text': 'We will simply write a command npm install express This is a very simple command you can write in your console or terminal and then press enter.', 'start': 23484.678, 'duration': 15.838}, {'end': 23508.18, 'text': 'You can clearly see the Express is installed in our system.', 'start': 23503.637, 'duration': 4.543}], 'summary': "Installed nodejs web framework module 'express' using npm command.", 'duration': 29.363, 'max_score': 23478.817, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE23478817.jpg'}, {'end': 23746.104, 'src': 'embed', 'start': 23690.158, 'weight': 12, 'content': [{'end': 23693.541, 'text': 'Now we will install a couple of packages here.', 'start': 23690.158, 'duration': 3.383}, {'end': 23698.824, 'text': 'Okay, first we will install express.', 'start': 23693.761, 'duration': 5.063}, {'end': 23702.085, 'text': 'write npm.', 'start': 23698.824, 'duration': 3.261}, {'end': 23710.87, 'text': 'install express.', 'start': 23702.085, 'duration': 8.785}, {'end': 23721.676, 'text': 'now we will also install morgan, which logs the request.', 'start': 23710.87, 'duration': 10.806}, {'end': 23731.653, 'text': 'after that we will also install http errors errors.', 'start': 23721.676, 'duration': 9.977}, {'end': 23735.976, 'text': 'this package makes it very easy to check the status code.', 'start': 23731.653, 'duration': 4.323}, {'end': 23743.602, 'text': 'and then last we will install node dot env press enter.', 'start': 23735.976, 'duration': 7.626}, {'end': 23746.104, 'text': 'this will take couple of seconds.', 'start': 23743.602, 'duration': 2.502}], 'summary': 'Installing express, morgan, http-errors, and node.env packages for logging and error handling.', 'duration': 55.946, 'max_score': 23690.158, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE23690158.jpg'}, {'end': 24279.764, 'src': 'embed', 'start': 24250.272, 'weight': 9, 'content': [{'end': 24260.48, 'text': 'What is ExpressJS? ExpressJS is a Node.js framework designed to build APIs, web applications, and cross-platform mobile applications.', 'start': 24250.272, 'duration': 10.208}, {'end': 24263.342, 'text': 'It is used as a server-side scripting language.', 'start': 24261, 'duration': 2.342}, {'end': 24269.106, 'text': 'ExpressJS is high-performance, fast, lightweight, and unopiniated.', 'start': 24264.222, 'duration': 4.884}, {'end': 24271.98, 'text': "We'll see what is REST API.", 'start': 24270.199, 'duration': 1.781}, {'end': 24279.764, 'text': 'But before that, what is REST and what is API? REST means Representational State Transfer.', 'start': 24272.5, 'duration': 7.264}], 'summary': 'Expressjs is a high-performance node.js framework for building apis and web applications, also used as a server-side scripting language.', 'duration': 29.492, 'max_score': 24250.272, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE24250272.jpg'}], 'start': 21434.844, 'title': 'Expressjs and api development', 'summary': 'Covers creating rest api using expressjs, reducing code and time by 5 to 10 times, its usage in building apis, web applications, and cross-platform mobile apps. it also highlights expressjs advantages, disadvantages, and usage by major companies, along with implementing get and post methods, middleware functions, and error handling in node.js.', 'chapters': [{'end': 21708.846, 'start': 21434.844, 'title': 'Expressjs: building apis and web apps', 'summary': 'Covers the creation of a rest api using expressjs, highlighting its benefits such as reducing code and time by 5 to 10 times, its features including fast server-side development, middleware, routing, and templating, as well as its usage in building apis, web applications, and cross-platform mobile apps.', 'duration': 274.002, 'highlights': ['ExpressJS reduces code and time by 5 to 10 times compared to using core modules of Node.js for creating a REST API. code reduction, time efficiency', 'ExpressJS features fast server-side development, middleware, routing, and templating engines for building dynamic content on web pages. fast server-side development, middleware, routing, templating engines', 'ExpressJS is designed to build APIs, web applications, and cross-platform mobile apps quickly and easily, providing high performance, fast, lightweight, and unopinionated solutions. high performance, fast, lightweight, unopinionated']}, {'end': 22288.61, 'start': 21709.906, 'title': 'Expressjs: advantages, disadvantages, and usage', 'summary': 'Highlights the advantages and disadvantages of expressjs, including its usage by major companies like ibm, uber, and netflix, and its popularity with over 34,300 companies. it also covers the process of creating an expressjs application and installing the required packages and modules.', 'duration': 578.704, 'highlights': ['ExpressJS usage by major companies Major companies like IBM, Uber, eBay, PayPal, Accenture, Fox Sports, Netflix, LinkedIn use ExpressJS.', 'Number of companies using ExpressJS According to nlib.com, there are more than 34,300 companies that are using ExpressJS.', 'Advantages of ExpressJS Express is unobviated and customizable, written in JavaScript, and fast to link with databases like MySQL, MongoDB.', 'Disadvantages of ExpressJS ExpressJS lacks a structural way to organize things, code can become non-understandable, and there are issues with callbacks and error messages.', 'ExpressJS as a popular lightweight framework ExpressJS is trending and helping many developers to save time, making it a popular choice for companies.', 'Process of creating an ExpressJS application The process involves creating a separate folder for modules and files, installing npm package manager, and finally installing ExpressJS.']}, {'end': 22739.134, 'start': 22290.371, 'title': 'Expressjs get and post methods', 'summary': 'Demonstrates the implementation of expressjs get and post methods to handle data requests, highlighting their differences, usage, and security features, along with a practical demonstration using node and postman.', 'duration': 448.763, 'highlights': ['The chapter demonstrates the implementation of ExpressJS GET and POST methods to handle data requests. Demonstrates the implementation of ExpressJS GET and POST methods.', 'GET and POST methods are used to send and receive a significant amount of data. GET and POST methods are used to send and receive a significant amount of data.', 'The post method is secure because the data is passed in a request body and not visible in the URL. Highlights the security feature of the post method.', 'The get method is not used for sensitive data and remains in the browser history. Explains the usage and limitation of the get method.', 'A practical demonstration is shown using Node and Postman to illustrate the working of the post method. Practical demonstration using Node and Postman to illustrate the post method.']}, {'end': 23598.567, 'start': 22741.596, 'title': 'Middleware functions in expressjs', 'summary': 'Explains the concept of middleware in expressjs, including its functions, usage, and creation, as well as the installation and usage of node package manager (npm), and error handling in expressjs.', 'duration': 856.971, 'highlights': ["Middleware is a request handler that has access to the application's request response cycle, containing the request subjects, response object, and the next middleware function. It can execute code, make changes to the request response objects, and end the request response cycle, as well as call the next middleware function in the stack. Middleware functions in ExpressJS provide access to the request response cycle, enabling the execution of code, modifications to request response objects, and ending the cycle, along with calling the next middleware function.", 'NPM, the Node Package Manager, has over 8 million code packages in its registry, used by open source developers to share software, and by businesses for private growth control. NPM boasts over 8 million code packages and is extensively used by open source developers for software sharing, as well as by businesses for private growth control.', "Error handling in ExpressJS involves catching and processing errors synchronously and asynchronously, utilizing default error handlers, and implementing recovery strategies without slowing the program's processing time. Error handling in ExpressJS includes catching and processing errors, utilizing default error handlers, and implementing recovery strategies without slowing the program's processing time."]}, {'end': 24340.389, 'start': 23599.588, 'title': 'Setting up error handling in node.js', 'summary': 'Covers setting up a new directory, initializing a new project, installing packages, creating an app.js file, and starting the application on port 3000 using expressjs and restful apis in node.js.', 'duration': 740.801, 'highlights': ['ExpressJS is a Node.js framework designed to build APIs, web applications, and cross-platform mobile applications. ExpressJS is a high-performance, fast, lightweight, and unopiniated framework used as a server-side scripting language.', 'RESTful API is very popular and commonly used to create APIs for web-based applications. RESTful API is flexible, handles multiple types of requests, and is widely used in web-based application development.', 'The chapter covers setting up a new directory, initializing a new project, installing packages, creating an app.js file, and starting the application on port 3000 using ExpressJS and RESTful APIs in Node.js. The process involves creating a new directory, initializing a new project, installing packages, creating an app.js file, and starting the application on port 3000 using ExpressJS and RESTful APIs in Node.js.']}], 'duration': 2905.545, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE21434844.jpg', 'highlights': ['ExpressJS reduces code and time by 5 to 10 times compared to using core modules of Node.js for creating a REST API. code reduction, time efficiency', 'ExpressJS is designed to build APIs, web applications, and cross-platform mobile apps quickly and easily, providing high performance, fast, lightweight, and unopinionated solutions. high performance, fast, lightweight, unopinionated', 'ExpressJS features fast server-side development, middleware, routing, and templating engines for building dynamic content on web pages. fast server-side development, middleware, routing, templating engines', 'ExpressJS usage by major companies Major companies like IBM, Uber, eBay, PayPal, Accenture, Fox Sports, Netflix, LinkedIn use ExpressJS.', 'Number of companies using ExpressJS According to nlib.com, there are more than 34,300 companies that are using ExpressJS.', 'Advantages of ExpressJS Express is unobviated and customizable, written in JavaScript, and fast to link with databases like MySQL, MongoDB.', 'Disadvantages of ExpressJS ExpressJS lacks a structural way to organize things, code can become non-understandable, and there are issues with callbacks and error messages.', 'ExpressJS as a popular lightweight framework ExpressJS is trending and helping many developers to save time, making it a popular choice for companies.', 'The chapter demonstrates the implementation of ExpressJS GET and POST methods to handle data requests. Demonstrates the implementation of ExpressJS GET and POST methods.', 'GET and POST methods are used to send and receive a significant amount of data. GET and POST methods are used to send and receive a significant amount of data.', 'The post method is secure because the data is passed in a request body and not visible in the URL. Highlights the security feature of the post method.', 'The get method is not used for sensitive data and remains in the browser history. Explains the usage and limitation of the get method.', 'A practical demonstration is shown using Node and Postman to illustrate the working of the post method. Practical demonstration using Node and Postman to illustrate the post method.', 'Middleware functions in ExpressJS provide access to the request response cycle, enabling the execution of code, modifications to request response objects, and ending the cycle, along with calling the next middleware function.', 'NPM boasts over 8 million code packages and is extensively used by open source developers for software sharing, as well as by businesses for private growth control.', "Error handling in ExpressJS includes catching and processing errors, utilizing default error handlers, and implementing recovery strategies without slowing the program's processing time.", 'ExpressJS is a high-performance, fast, lightweight, and unopiniated framework used as a server-side scripting language.', 'RESTful API is flexible, handles multiple types of requests, and is widely used in web-based application development.', 'The chapter covers setting up a new directory, initializing a new project, installing packages, creating an app.js file, and starting the application on port 3000 using ExpressJS and RESTful APIs in Node.js. The process involves creating a new directory, initializing a new project, installing packages, creating an app.js file, and starting the application on port 3000 using ExpressJS and RESTful APIs in Node.js.']}, {'end': 27558.108, 'segs': [{'end': 24373.935, 'src': 'embed', 'start': 24340.389, 'weight': 15, 'content': [{'end': 24345.032, 'text': 'now we will see the complete architecture of http request type.', 'start': 24340.389, 'duration': 4.643}, {'end': 24357.186, 'text': 'in this client sends a request in the form of json file And with the help of HTTP request, which are get batch post and delete,', 'start': 24345.032, 'duration': 12.154}, {'end': 24368.292, 'text': 'it will go to the server and then sends back the response to the client in the form of message to tell what happened to the request.', 'start': 24357.186, 'duration': 11.106}, {'end': 24373.935, 'text': 'And now we will create a simple RESTful API from scratch.', 'start': 24369.973, 'duration': 3.962}], 'summary': 'Overview of http request types: client sends json request, server responds with message.', 'duration': 33.546, 'max_score': 24340.389, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE24340389.jpg'}, {'end': 24835.27, 'src': 'embed', 'start': 24806.756, 'weight': 16, 'content': [{'end': 24812.401, 'text': 'React is a JavaScript library which is used to build mobile and web applications fast and interactive.', 'start': 24806.756, 'duration': 5.645}, {'end': 24814.083, 'text': 'It is an open source.', 'start': 24813.222, 'duration': 0.861}, {'end': 24817.988, 'text': 'reusable components-based front-end library of JavaScript.', 'start': 24814.707, 'duration': 3.281}, {'end': 24824.629, 'text': 'Basically, with the help of React, we can create a client-side application or user interface.', 'start': 24819.288, 'duration': 5.341}, {'end': 24828.469, 'text': 'It is a combination of HTML and JavaScript.', 'start': 24825.929, 'duration': 2.54}, {'end': 24831.01, 'text': "Let's see the features of ReactJS.", 'start': 24829.329, 'duration': 1.681}, {'end': 24835.27, 'text': 'First, JSX.', 'start': 24833.89, 'duration': 1.38}], 'summary': 'React is a fast and interactive javascript library for building web and mobile applications, featuring reusable components and jsx.', 'duration': 28.514, 'max_score': 24806.756, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE24806756.jpg'}, {'end': 24894.726, 'src': 'embed', 'start': 24869.064, 'weight': 7, 'content': [{'end': 24873.508, 'text': 'React receives information through arguments and passes it by returning values.', 'start': 24869.064, 'duration': 4.444}, {'end': 24885.118, 'text': 'React goes beyond simple UI and has many extensions for complete application support, extended with Flux and Redox among others.', 'start': 24876.01, 'duration': 9.108}, {'end': 24892.544, 'text': 'Debugging It is a small browser extension to make debugging easier and faster.', 'start': 24886.919, 'duration': 5.625}, {'end': 24894.726, 'text': "Let's see what is ExpressJS.", 'start': 24893.285, 'duration': 1.441}], 'summary': 'React handles data with arguments, supports flux and redox, offers debugging extension, and explores expressjs.', 'duration': 25.662, 'max_score': 24869.064, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE24869064.jpg'}, {'end': 25310.58, 'src': 'embed', 'start': 25281.658, 'weight': 10, 'content': [{'end': 25287.202, 'text': 'It is mainly used to simplify the JavaScript code so that it can be read and debug easily.', 'start': 25281.658, 'duration': 5.544}, {'end': 25294.628, 'text': 'What is Node.js? Node.js is an open-source cross-platform JavaScript runtime environment.', 'start': 25289.124, 'duration': 5.504}, {'end': 25298.571, 'text': 'And it runs on a web application outside the client browser.', 'start': 25295.308, 'duration': 3.263}, {'end': 25303.034, 'text': 'Node.js is used by the developers to build server-side web applications.', 'start': 25299.231, 'duration': 3.803}, {'end': 25310.58, 'text': 'Node.js is perfect for data intensive applications since it uses an asynchronous event-driven model.', 'start': 25304.215, 'duration': 6.365}], 'summary': 'Node.js simplifies javascript code, used for server-side web apps, and excels in data-intensive applications.', 'duration': 28.922, 'max_score': 25281.658, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE25281658.jpg'}, {'end': 25451.155, 'src': 'embed', 'start': 25375.055, 'weight': 5, 'content': [{'end': 25389.183, 'text': "we'll simply write npm init-y for all the default values.", 'start': 25375.055, 'duration': 14.128}, {'end': 25396.987, 'text': 'press enter so you have seen the package.design file has been installed in this package.', 'start': 25389.183, 'duration': 7.804}, {'end': 25403.946, 'text': "let's clear it Now.", 'start': 25396.987, 'duration': 6.959}, {'end': 25406.207, 'text': 'the first thing you need to install is TypeScript.', 'start': 25403.946, 'duration': 2.261}, {'end': 25416.076, 'text': 'Type npm pnd.', 'start': 25406.888, 'duration': 9.188}, {'end': 25432.009, 'text': 'This will install the TypeScript dependencies.', 'start': 25429.607, 'duration': 2.402}, {'end': 25435.667, 'text': 'Now I will install two more dependencies.', 'start': 25433.246, 'duration': 2.421}, {'end': 25441.35, 'text': 'Please write npm i.', 'start': 25436.488, 'duration': 4.862}, {'end': 25451.155, 'text': 'I will also install nodemon.', 'start': 25441.35, 'duration': 9.805}], 'summary': 'Installed typescript, nodemon, and package.design file using npm commands.', 'duration': 76.1, 'max_score': 25375.055, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE25375055.jpg'}, {'end': 26463.197, 'src': 'embed', 'start': 26213.386, 'weight': 0, 'content': [{'end': 26224.21, 'text': "let's write it here and we'll write in the placeholder password.", 'start': 26213.386, 'duration': 10.824}, {'end': 26232.213, 'text': "let's go to another one and let's create a first name, last name, email, password.", 'start': 26224.21, 'duration': 8.003}, {'end': 26234.995, 'text': "and let's create one more.", 'start': 26232.213, 'duration': 2.782}, {'end': 26243.628, 'text': 'that will be a age.', 'start': 26234.995, 'duration': 8.633}, {'end': 26252.53, 'text': 'for this we have to write here number, name.', 'start': 26243.628, 'duration': 8.902}, {'end': 26254.89, 'text': "we don't need name, i guess.", 'start': 26252.53, 'duration': 2.36}, {'end': 26259.291, 'text': "well, let's write age here.", 'start': 26254.89, 'duration': 4.401}, {'end': 26262.012, 'text': 'page folder.', 'start': 26259.291, 'duration': 2.721}, {'end': 26266.612, 'text': 'what you see inside the box in the front end.', 'start': 26262.012, 'duration': 4.6}, {'end': 26269.633, 'text': "here let's create a submit button.", 'start': 26266.612, 'duration': 3.021}, {'end': 26288.426, 'text': 'type of the button will be submit.', 'start': 26276.923, 'duration': 11.503}, {'end': 26297.249, 'text': 'so we can give it style in this part.', 'start': 26288.426, 'duration': 8.823}, {'end': 26314.617, 'text': 'so our form is ready.', 'start': 26310.876, 'duration': 3.741}, {'end': 26318.838, 'text': "uh yeah, we'll write require here.", 'start': 26314.617, 'duration': 4.221}, {'end': 26332.343, 'text': 'so one will be left empty.', 'start': 26318.838, 'duration': 13.505}, {'end': 26341.747, 'text': 'this will help us to to require every field, because everything is important.', 'start': 26332.343, 'duration': 9.404}, {'end': 26344.508, 'text': 'we cannot make it empty.', 'start': 26341.747, 'duration': 2.761}, {'end': 26360.333, 'text': 'so we are writing required.', 'start': 26344.508, 'duration': 15.825}, {'end': 26369.117, 'text': 'so our HTML page is ready here.', 'start': 26360.333, 'duration': 8.784}, {'end': 26376.327, 'text': "let's see how it looks on this html page.", 'start': 26369.117, 'duration': 7.21}, {'end': 26379.071, 'text': 'here a registration form.', 'start': 26376.327, 'duration': 2.744}, {'end': 26409.533, 'text': 'look like this me show you what require is doing.', 'start': 26379.071, 'duration': 30.462}, {'end': 26412.555, 'text': 'as you can see, please fill out this field.', 'start': 26409.533, 'duration': 3.022}, {'end': 26417.578, 'text': 'this is what required function do.', 'start': 26412.555, 'duration': 5.023}, {'end': 26425.183, 'text': 'submit is now coming back to vs code.', 'start': 26417.578, 'duration': 7.605}, {'end': 26428.085, 'text': "we'll write some css code for styling.", 'start': 26425.183, 'duration': 2.902}, {'end': 26441.571, 'text': "here we'll write padding for the page will be zero.", 'start': 26428.085, 'duration': 13.486}, {'end': 26443.252, 'text': "you don't have to write.", 'start': 26441.571, 'duration': 1.681}, {'end': 26451.314, 'text': 'percent margin will also write zero for the overall page.', 'start': 26443.252, 'duration': 8.062}, {'end': 26463.197, 'text': 'now we go to the body part.', 'start': 26451.314, 'duration': 11.883}], 'summary': 'Creating a registration form with required fields and submit button.', 'duration': 249.811, 'max_score': 26213.386, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE26213386.jpg'}, {'end': 26676.813, 'src': 'embed', 'start': 26558.336, 'weight': 2, 'content': [{'end': 26563.839, 'text': "let's create a 40, 40 percent.", 'start': 26558.336, 'duration': 5.503}, {'end': 26565.12, 'text': 'width will be 100.', 'start': 26563.839, 'duration': 1.281}, {'end': 26570.133, 'text': 'only display flex will be here.', 'start': 26565.12, 'duration': 5.013}, {'end': 26578.375, 'text': 'direction, all this will be column only justify contents.', 'start': 26570.133, 'duration': 8.242}, {'end': 26599.382, 'text': "let's see to our code, not Center.", 'start': 26578.375, 'duration': 21.007}, {'end': 26609.104, 'text': "let's make it as you can, style it as your own as you want.", 'start': 26599.382, 'duration': 9.722}, {'end': 26632.529, 'text': 'heading. I think display will be inline blog.', 'start': 26609.104, 'duration': 23.425}, {'end': 26643.842, 'text': 'this will make our page registration page look more clean.', 'start': 26632.529, 'duration': 11.313}, {'end': 26676.813, 'text': 'perform input output.', 'start': 26643.842, 'duration': 32.971}], 'summary': 'Create a 40% width with a 100 width display, using flexbox for a clean registration page design.', 'duration': 118.477, 'max_score': 26558.336, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE26558336.jpg'}, {'end': 27202.008, 'src': 'embed', 'start': 27127.454, 'weight': 1, 'content': [{'end': 27137.18, 'text': 'this is basically to decode the data sent through HTML form.', 'start': 27127.454, 'duration': 9.726}, {'end': 27145.573, 'text': 'this will express dot.', 'start': 27137.18, 'duration': 8.393}, {'end': 27149.754, 'text': 'we will write static.', 'start': 27145.573, 'duration': 4.181}, {'end': 27164.498, 'text': 'static function will be public folder, public.', 'start': 27149.754, 'duration': 14.744}, {'end': 27171.919, 'text': 'this will use the public folder for us.', 'start': 27164.498, 'duration': 7.421}, {'end': 27184.063, 'text': "now we'll save this file first, open your html file and write in the form part,", 'start': 27171.919, 'duration': 12.144}, {'end': 27202.008, 'text': "since here we'll declare the file name app.js form class form and we'll write method, which will be post here.", 'start': 27184.063, 'duration': 17.945}], 'summary': 'Decoding data from html form, using public folder and saving file.', 'duration': 74.554, 'max_score': 27127.454, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE27127454.jpg'}, {'end': 27289.309, 'src': 'embed', 'start': 27251.721, 'weight': 6, 'content': [{'end': 27257.863, 'text': 'who also writes code to communicate with the database and again, as mentioned, ensures data integrity and consistency.', 'start': 27251.721, 'duration': 6.142}, {'end': 27261.325, 'text': "Now, essentially, a backend developer handles what you don't see.", 'start': 27258.323, 'duration': 3.002}, {'end': 27266.327, 'text': "They're in charge of the backend of a website, which includes servers, database, applications, and so forth.", 'start': 27261.725, 'duration': 4.602}, {'end': 27273.597, 'text': 'So if you wish to become a backend developer, you can, but there are a few skills that you need to have.', 'start': 27268.953, 'duration': 4.644}, {'end': 27278.941, 'text': "So let's look at the skills that you need to hone to become a successful backend developer.", 'start': 27274.757, 'duration': 4.184}, {'end': 27282.523, 'text': 'First up is data structures and algorithms.', 'start': 27280.382, 'duration': 2.141}, {'end': 27285.946, 'text': 'Now you must have a good understanding of data structures and algorithms.', 'start': 27282.984, 'duration': 2.962}, {'end': 27289.309, 'text': 'Understanding how the data is being stored is crucial.', 'start': 27286.446, 'duration': 2.863}], 'summary': 'Backend developers handle servers, databases, and applications, needing skills in data structures and algorithms.', 'duration': 37.588, 'max_score': 27251.721, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE27251721.jpg'}, {'end': 27434.636, 'src': 'embed', 'start': 27406.086, 'weight': 9, 'content': [{'end': 27414.433, 'text': "So some popularly used database management systems are MySQL, there's PostgreSQL, SQL Server, and you also have MongoDB.", 'start': 27406.086, 'duration': 8.347}, {'end': 27419.437, 'text': 'And lastly, we have web hosting platforms.', 'start': 27417.075, 'duration': 2.362}, {'end': 27427.003, 'text': 'Now, web hosting platforms allow you to deploy your product on a cloud service provider so it can be accessed from the worldwide web.', 'start': 27420.357, 'duration': 6.646}, {'end': 27434.636, 'text': 'Now, popular ones are Amazon Web Services, Google Cloud Platform, Heroku, and Microsoft Azure.', 'start': 27427.813, 'duration': 6.823}], 'summary': 'Popular database systems include mysql, postgresql, sql server, and mongodb. web hosting platforms like aws, google cloud, heroku, and azure enable global access.', 'duration': 28.55, 'max_score': 27406.086, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE27406086.jpg'}], 'start': 24340.389, 'title': 'Full stack development fundamentals', 'summary': 'Covers http request architecture, react and expressjs overview, client-side to server-side connection, typescript setup with express in node, front-end registration form creation, and backend developer skills and responsibilities, providing key insights into web development and backend responsibilities.', 'chapters': [{'end': 24777.069, 'start': 24340.389, 'title': 'Http request architecture', 'summary': 'Explores the architecture of http request, including the use of json files, different types of requests (get, batch, post, delete), and the process of creating a restful api using expressjs, with a demonstration of running the api on port 4000 and accessing it through a web browser.', 'duration': 436.68, 'highlights': ['The chapter explores the architecture of HTTP request, including the use of JSON files, different types of requests (get, batch, post, delete), and the process of creating a RESTful API using ExpressJS. It explains the complete architecture of HTTP request, including the use of JSON files and different types of requests such as get, batch, post, and delete, as well as creating a RESTful API using ExpressJS.', 'Demonstrates the process of running the API on port 4000 and accessing it through a web browser. It demonstrates running the API on port 4000 and accessing it through a web browser, showing the response and error message handling.', 'Provides a step-by-step guide on installing and setting up ExpressJS, including creating necessary files, initializing the server, and defining endpoints. It provides a step-by-step guide on installing and setting up ExpressJS, including creating necessary files, initializing the server, and defining endpoints, with specific instructions such as npm install express and creating an index.js file.']}, {'end': 24954.873, 'start': 24777.069, 'title': 'React and expressjs: full stack overview', 'summary': 'Explains the key features of react and expressjs, highlighting that react is a javascript library used for building fast and interactive web and mobile applications, featuring jsx, virtual dom, one-way data binding, and debugging tools. expressjs, on the other hand, is a high-performance node.js framework for fast server-side development, featuring middleware, routing, templating, and debugging capabilities.', 'duration': 177.804, 'highlights': ['ReactJS: Virtual DOM Virtual DOM in React defines how documents are accessed and manipulated in the web page, leading to improved performance and faster React application speed.', 'ReactJS: JSX JSX, a syntax extension of JavaScript, allows developers to visualize the UI and create reusable components-based front-end libraries for faster application development.', "ExpressJS: Middleware ExpressJS utilizes middleware as a request handler, providing access to the application's request response cycle, enhancing the development of APIs and web applications.", "ReactJS: One-way Data Binding React's one-way data binding enables the efficient flow of information in a single direction, ensuring that information is received through arguments and passed via return values.", "ExpressJS: Routing ExpressJS efficiently manages the application's endpoints, allowing them to respond to client requests, thereby enhancing the overall performance and functionality of the web applications."]}, {'end': 25249.944, 'start': 24956.674, 'title': 'Connecting client side to server side', 'summary': 'Details the process of connecting the client side to the server side by creating folders, installing packages, and starting applications, resulting in the successful setup of a client side and backend application.', 'duration': 293.27, 'highlights': ['The chapter explains the process of creating a client-side application by setting up a folder named React Express and installing npm packages, resulting in the successful creation of the client folder with all the necessary npm files. Creation of React Express folder, installation of npm packages, successful creation of client folder with npm files', 'The process of creating a backend application is detailed, involving the installation of packages and setting up an API folder, resulting in the successful installation of all the required packages and the creation of the API folder. Installation of packages, setup of API folder, successful installation of required packages', 'The chapter concludes with the successful startup of the client-side application and the backend application, with the localhost 3000 page opening for the client-side application. Successful startup of client-side and backend applications, opening of localhost 3000 page']}, {'end': 25889.752, 'start': 25253.885, 'title': 'Setting up typescript with express in node', 'summary': 'Introduces typescript, node.js, and expressjs, focusing on their functionalities and installation process, with typescript being a strongly typed superset of javascript, node.js serving as a cross-platform javascript runtime environment for server-side web applications, and expressjs enabling the quick and easy development of apis and web applications.', 'duration': 635.867, 'highlights': ['TypeScript is a strongly type superset of JavaScript, developed and maintained by Microsoft, created to develop large applications. TypeScript is a strongly typed superset of JavaScript, developed and maintained by Microsoft, and is designed for developing large applications.', 'Node.js is a cross-platform JavaScript runtime environment for server-side web applications, perfect for data-intensive applications with its asynchronous event-driven model. Node.js is a cross-platform JavaScript runtime environment for server-side web applications, ideal for data-intensive applications due to its asynchronous event-driven model.', 'ExpressJS is a Node.js framework for building APIs, web applications, and cross-platform mobile apps, known for its high performance and ease of use. ExpressJS is a Node.js framework used to build APIs, web applications, and cross-platform mobile apps, valued for its high performance and ease of use.']}, {'end': 27202.008, 'start': 25890.312, 'title': 'Front end registration form creation', 'summary': 'Discusses the creation of a front-end registration form, including the creation of html and css files, the structure of the form, and the styling process. the form includes fields for first name, last name, email, password, and age, with the use of required attribute for validation. the api routes for get and post methods are also discussed, along with the middleware for handling json data and decoding form data.', 'duration': 1311.696, 'highlights': ['The chapter discusses the creation of a front-end registration form, including the creation of HTML and CSS files, the structure of the form, and the styling process. The chapter provides a detailed overview of creating the front-end of a registration form, emphasizing the process of creating HTML and CSS files, form structure, and styling.', 'The form includes fields for first name, last name, email, password, and age, with the use of required attribute for validation. The form contains fields for first name, last name, email, password, and age, with an emphasis on using the required attribute for validation to ensure data completeness.', 'The API routes for GET and POST methods are also discussed, along with the middleware for handling JSON data and decoding form data. The chapter covers the implementation of API routes for both GET and POST methods, as well as the middleware for handling JSON data and decoding form data to ensure efficient data transmission and processing.']}, {'end': 27558.108, 'start': 27207.256, 'title': 'Backend developer skills and responsibilities', 'summary': 'Discusses the essential skills and responsibilities required to become a successful backend developer, including a focus on programming languages and frameworks, version control, database management systems, web hosting platforms, and non-technical skills. additionally, it outlines the key roles and responsibilities of a backend developer and provides salary insights from the united states and india.', 'duration': 350.852, 'highlights': ['Backend developer earns around 102,000 US dollars per annum in the United States According to Glassdoor, a backend developer in the United States earns around 102,000 US dollars per annum.', 'Backend developer in India earns an average salary of 7,23,000 Indian rupees per annum In India, a backend developer earns an average salary of 7,23,000 Indian rupees per annum.', 'Programming languages and frameworks are critical skills for a backend developer One of the most critical skills of a backend developer is the in-depth knowledge of backend programming languages, including JavaScript, Node.js, Express.js, Java, Spring, JSF, Python, Django, Flask, C Sharp, ASP.NET Core, .NET MVC, PHP, Perl, and Ruby.', 'Understanding data structures and algorithms is crucial for a backend developer A good understanding of data structures and algorithms, including concepts like stacks, queues, linked lists, sorting, and search algorithms, is important for a backend developer.', "Version control systems like Git, GitHub, and Subversion are essential for project management Version control systems like Git, GitHub, and Subversion help manage the project files and keep track of the entire history of users' work.", 'Database management systems such as MySQL, PostgreSQL, SQL Server, and MongoDB are commonly used by backend developers Backend developers write code to perform relational mapping to fetch data from popular database management systems like MySQL, PostgreSQL, SQL Server, and MongoDB.']}], 'duration': 3217.719, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE24340389.jpg', 'highlights': ['The chapter explores the architecture of HTTP request, including the use of JSON files, different types of requests (get, batch, post, delete), and the process of creating a RESTful API using ExpressJS.', 'Demonstrates the process of running the API on port 4000 and accessing it through a web browser, showing the response and error message handling.', 'Provides a step-by-step guide on installing and setting up ExpressJS, including creating necessary files, initializing the server, and defining endpoints.', 'ReactJS: Virtual DOM in React defines how documents are accessed and manipulated in the web page, leading to improved performance and faster React application speed.', "ExpressJS: Middleware provides access to the application's request response cycle, enhancing the development of APIs and web applications.", 'The chapter explains the process of creating a client-side application by setting up a folder named React Express and installing npm packages, resulting in the successful creation of the client folder with all the necessary npm files.', 'TypeScript is a strongly typed superset of JavaScript, developed and maintained by Microsoft, and is designed for developing large applications.', 'Node.js is a cross-platform JavaScript runtime environment for server-side web applications, ideal for data-intensive applications due to its asynchronous event-driven model.', 'ExpressJS is a Node.js framework used to build APIs, web applications, and cross-platform mobile apps, valued for its high performance and ease of use.', 'The chapter discusses the creation of a front-end registration form, including the creation of HTML and CSS files, the structure of the form, and the styling process.', 'The form contains fields for first name, last name, email, password, and age, with an emphasis on using the required attribute for validation to ensure data completeness.', 'The chapter covers the implementation of API routes for both GET and POST methods, as well as the middleware for handling JSON data and decoding form data to ensure efficient data transmission and processing.', 'According to Glassdoor, a backend developer in the United States earns around 102,000 US dollars per annum.', 'In India, a backend developer earns an average salary of 7,23,000 Indian rupees per annum.', 'One of the most critical skills of a backend developer is the in-depth knowledge of backend programming languages, including JavaScript, Node.js, Express.js, Java, Spring, JSF, Python, Django, Flask, C Sharp, ASP.NET Core, .NET MVC, PHP, Perl, and Ruby.', 'A good understanding of data structures and algorithms, including concepts like stacks, queues, linked lists, sorting, and search algorithms, is important for a backend developer.', "Version control systems like Git, GitHub, and Subversion help manage the project files and keep track of the entire history of users' work.", 'Backend developers write code to perform relational mapping to fetch data from popular database management systems like MySQL, PostgreSQL, SQL Server, and MongoDB.']}, {'end': 28789.241, 'segs': [{'end': 28653.506, 'src': 'embed', 'start': 28626.855, 'weight': 0, 'content': [{'end': 28636.58, 'text': 'now, apart from this, we have shutterfly, we have metlife, we even have forbes which use mongodb on a regular basis,', 'start': 28626.855, 'duration': 9.725}, {'end': 28638.401, 'text': "and that brings us to the end of today's session.", 'start': 28636.58, 'duration': 1.821}, {'end': 28645.665, 'text': "guys, now, before we wrap up the session, it is also important that you need to understand when you should be using mongodb and when you shouldn't.", 'start': 28638.401, 'duration': 7.264}, {'end': 28653.506, 'text': "Now, although MongoDB is a great database out there, there are times you shouldn't and you should use in certain circumstances.", 'start': 28646.124, 'duration': 7.382}], 'summary': 'Companies like shutterfly, metlife, and forbes use mongodb regularly, emphasizing the importance of understanding when to use it.', 'duration': 26.651, 'max_score': 28626.855, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE28626855.jpg'}], 'start': 27558.588, 'title': 'Mongodb in back-end development', 'summary': "Provides an overview of back-end development and mongodb, highlighting mongodb's key features such as aggregation, gridfs, sharding, and its applications in iot, mobile apps, real-time analysis, and adoption by companies like google and facebook.", 'chapters': [{'end': 28184.063, 'start': 27558.588, 'title': 'Back-end development and mongodb overview', 'summary': 'Provides an overview of back-end development, focusing on the roles and responsibilities, and delves into nosql databases with a specific focus on mongodb, including its key features, history, and use cases, emphasizing its flexibility, scalability, and performance.', 'duration': 625.475, 'highlights': ['Introduction to NoSQL and MongoDB The chapter introduces NoSQL databases, specifically focusing on MongoDB, its non-relational nature, flexible data storage in JSON-like documents, and its distinction from traditional relational databases.', "Role and Flexibility of MongoDB MongoDB's flexibility allows for hierarchical relationships within a single record, flexible schema, and support for varying data formats, enabling high performance and scalability for large volumes of data.", 'History and Adoption of MongoDB The history of MongoDB, from its development in 2007 to becoming an open-source platform in 2009 and a publicly traded company in 2017, with over 110 million downloads and regular users in 2022, demonstrates its widespread adoption and impact.', 'Use Cases and Advantages of MongoDB MongoDB is preferred for handling large volumes of data with high performance, overcoming limitations of relational databases, providing flexible schema for big data applications, and offering security and powerful query language for diverse data types.']}, {'end': 28431.199, 'start': 28184.867, 'title': 'Key features of mongodb', 'summary': 'Highlighted key features of mongodb, including aggregation for grouping and computing results, gridfs for storing and retrieving large files, sharding for data partitioning and replication, document-oriented structure with no enforced schema, indexing for query performance, support for ad hoc queries, and high performance compared to relational databases.', 'duration': 246.332, 'highlights': ["MongoDB's high performance in writing speed exceeds that of relational databases like MySQL, providing a significant advantage in data processing.", 'Ad hoc queries are supported by MongoDB, allowing for short-lived queries with variable-dependent values and real-time updates, despite not being known during the database schema design.', 'Indexing is crucial for improving search query performance in MongoDB, as it eliminates the need to scan every document in a collection for query results, enhancing retrieval speed.', 'Document-oriented nature of MongoDB allows for unique system-generated keys for each document and flexible structures within a collection, enabling it to store different types of data with varied structures.', 'Sharding in MongoDB enables partitioning of data across multiple servers using a shared key, while replication ensures redundancy by synchronizing organized data across many servers.', 'GridFS in MongoDB stores and retrieves files that exceed the 16 MB document size limit by dividing them into chunks and using two collections to store the chunks, with a default chunk size limit of 255 KB.', "Aggregation operations in MongoDB group values from multiple documents, similar to SQL's group by clause, and can perform various operations on the grouped data to return a single result."]}, {'end': 28789.241, 'start': 28431.199, 'title': 'Mongodb applications and real-world examples', 'summary': 'Discusses the applications of mongodb in real life, including its use in iot, mobile applications, real-time analysis, catalog management, and aadhaar card database, as well as its adoption by companies like google, facebook, and bosch. it also outlines when to use mongodb based on its compatibility with unstructured data, cloud computing, lack of database administrators, unstructured data processing, and schema issues.', 'duration': 358.042, 'highlights': ["MongoDB is extensively used in IoT, mobile applications, and real-time analysis, maximizing the potential of IoT devices and enabling real-time data analysis, with companies like Google, Facebook, and Bosch being prominent users. The chapter emphasizes MongoDB's applications in IoT, mobile applications, and real-time analysis, highlighting its role in maximizing the potential of IoT devices and enabling real-time data analysis. It also mentions the prominent use of MongoDB by companies like Google, Facebook, and Bosch.", "Aadhaar card, India's unique identification project, relies on MongoDB for managing demographic and biometric information of over 1.5 billion people, alongside other databases like HBase, MySQL, and Hadoop, for real-time data processing. The transcript discusses Aadhaar card as a real-world MongoDB use case, emphasizing its reliance on MongoDB for managing demographic and biometric information of over 1.5 billion people. It also mentions the use of other databases alongside MongoDB for real-time data processing.", 'MongoDB is suitable for big data analytic systems, cloud computing platforms like Microsoft Azure and AWS, and scenarios with unstructured data and schema issues, making it a preferred choice when working with unstructured data, cloud computing, and unstable or undefined schema. The chapter outlines the suitability of MongoDB for big data analytic systems, cloud computing platforms like Microsoft Azure and AWS, and scenarios with unstructured data and schema issues. It highlights MongoDB as a preferred choice for working with unstructured data, cloud computing, and unstable or undefined schema.']}], 'duration': 1230.653, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE27558588.jpg', 'highlights': ["MongoDB's flexibility allows for hierarchical relationships within a single record, flexible schema, and support for varying data formats, enabling high performance and scalability for large volumes of data.", 'History of MongoDB, from its development in 2007 to becoming an open-source platform in 2009 and a publicly traded company in 2017, with over 110 million downloads and regular users in 2022, demonstrates its widespread adoption and impact.', 'MongoDB is preferred for handling large volumes of data with high performance, overcoming limitations of relational databases, providing flexible schema for big data applications, and offering security and powerful query language for diverse data types.', 'Ad hoc queries are supported by MongoDB, allowing for short-lived queries with variable-dependent values and real-time updates, despite not being known during the database schema design.', 'Sharding in MongoDB enables partitioning of data across multiple servers using a shared key, while replication ensures redundancy by synchronizing organized data across many servers.', "Aadhaar card, India's unique identification project, relies on MongoDB for managing demographic and biometric information of over 1.5 billion people, alongside other databases like HBase, MySQL, and Hadoop, for real-time data processing.", 'MongoDB is suitable for big data analytic systems, cloud computing platforms like Microsoft Azure and AWS, and scenarios with unstructured data and schema issues, making it a preferred choice when working with unstructured data, cloud computing, and unstable or undefined schema.', "Aggregation operations in MongoDB group values from multiple documents, similar to SQL's group by clause, and can perform various operations on the grouped data to return a single result."]}, {'end': 30167.307, 'segs': [{'end': 29353.794, 'src': 'embed', 'start': 29325.694, 'weight': 0, 'content': [{'end': 29331.336, 'text': "And they're conceptualized into three categories based on the level of the detail and the specificity.", 'start': 29325.694, 'duration': 5.642}, {'end': 29333.894, 'text': 'Now they are classified into three types.', 'start': 29331.892, 'duration': 2.002}, {'end': 29336.016, 'text': 'The first one is conceptual data model.', 'start': 29333.934, 'duration': 2.082}, {'end': 29342.322, 'text': 'The conceptual data model explains what the system should contain with regard to and how it is related.', 'start': 29336.417, 'duration': 5.905}, {'end': 29347.207, 'text': 'This model is usually built with the help of the user and the stakeholders.', 'start': 29342.843, 'duration': 4.364}, {'end': 29353.794, 'text': "It represents the application's business logic and is often used as the basis for one or more following models.", 'start': 29347.628, 'duration': 6.166}], 'summary': 'Transcript discusses three types of conceptual data models for system design.', 'duration': 28.1, 'max_score': 29325.694, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE29325694.jpg'}, {'end': 30177.698, 'src': 'embed', 'start': 30151.594, 'weight': 1, 'content': [{'end': 30155.938, 'text': 'So, if you want to know more about it, we have a dedicated video on what is MongoDB,', 'start': 30151.594, 'duration': 4.344}, {'end': 30160.401, 'text': "where we've explained clearly on all these terms and how it exactly works.", 'start': 30155.938, 'duration': 4.463}, {'end': 30164.384, 'text': 'Make sure you check that out which will be quite helpful and I would highly recommend.', 'start': 30160.681, 'duration': 3.703}, {'end': 30167.307, 'text': 'so, as you can see, we have basically three documents here.', 'start': 30164.864, 'duration': 2.443}, {'end': 30174.415, 'text': 'we have a id of three different uh people who have purchased certain products from a stationery and have different ids.', 'start': 30167.307, 'duration': 7.108}, {'end': 30177.698, 'text': 'so we have three customers here rahul, pranav and kirti.', 'start': 30174.415, 'duration': 3.283}], 'summary': 'Explains mongodb in a dedicated video with 3 customer documents.', 'duration': 26.104, 'max_score': 30151.594, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE30151594.jpg'}], 'start': 28789.241, 'title': 'Data modeling and mongodb operators', 'summary': 'Covers the installation of mongodb, data modeling in mongodb including its importance, flexibility, and methods, along with an explanation of mongodb operators and their usage to enhance query operations.', 'chapters': [{'end': 29011.035, 'start': 28789.241, 'title': 'Installing mongodb & understanding data modeling', 'summary': 'Details the process of installing mongodb, including creating a path, running the server, and checking databases, followed by an overview of data modeling in mongodb including its flexibility and the concept of relationships, and finally an agenda for the tutorial.', 'duration': 221.794, 'highlights': ['The chapter details the process of installing MongoDB, including creating a path, running the server, and checking databases. It includes steps like creating a path, running the mongo server, and checking databases for successful installation.', 'Provides an overview of data modeling in MongoDB, highlighting its flexibility and the concept of relationships. Explains the process of data modeling in MongoDB, emphasizing its flexibility and the concept of relationships between entities.', 'Outlines the agenda for the tutorial, including topics like data modeling, types of data models, relationships, and methods to create data models. Details the agenda for the tutorial, covering topics like data modeling, types of data models, relationships, and methods to create data models.']}, {'end': 29197.176, 'start': 29011.394, 'title': 'Data modeling: importance and benefits', 'summary': 'Discusses the importance of data modeling in mongodb, highlighting its role in converting unstructured data into structured, optimized, and efficient storage, ensuring high data quality, and improving database performance.', 'duration': 185.782, 'highlights': ['Data modeling helps to create a simplified and optimized logical database that eliminates redundancy, reduces storage requirements, and enables efficient retrieval from the database, which is necessary for storing unstructured data (e.g., customer details) in a structured manner.', 'Visual representation of requirements and business rules in data modeling enables anticipation of large-scale data corruption, while defining rules to monitor data quality helps in ensuring error-free data storage, thus emphasizing the importance of data quality in large data storage.', 'Creating data models forces the business to define how data is generated and moves across the application, development, and maintenance, and exposes errors and inconsistencies early in the process, making it easier and less expensive to fix, which is crucial in maintaining a MongoDB database.', 'An organized database operated more efficiently through data modeling prevents endless searching and returns results more quickly, thus improving database performance and efficiency.', 'The chapter emphasizes the importance of data modeling in MongoDB, highlighting its role in converting unstructured data into structured, optimized, and efficient storage, ensuring high data quality, and improving database performance.']}, {'end': 29673.068, 'start': 29199.017, 'title': 'Data modeling in mongodb', 'summary': "Explains the flexibility of data modeling in mongodb, the types of data models - conceptual, logical, and physical, and the methods to create data models - embedded and reference, and the different types of relationships - one-to-one, one-to-many, and many-to-many, using examples and mongodb's support for multiple ways to model relationships between entities.", 'duration': 474.051, 'highlights': ["MongoDB's collection do not require the documents to have the same schema, providing flexibility in data modeling. Unlike SQL databases, MongoDB's collection does not require the documents to have the same schema, allowing for a flexible data modeling approach.", "Explaining the three types of data models - conceptual, logical, and physical, with the conceptual model representing the application's business logic and used as the basis for other models, the logical model describing the data structure at a high level, and the physical model representing how the data will be stored in a specific database. The chapter explains the three types of data models - conceptual, logical, and physical, with the conceptual model representing the application's business logic, the logical model describing the data structure, and the physical model representing how the data will be stored in a specific database.", 'Differentiating between the embedded data model and the reference data model, with the embedded model storing data in a single document and the reference model splitting the data into multiple collections using references, providing examples and use cases for each. The chapter differentiates between the embedded data model and the reference data model, with the embedded model storing data in a single document and the reference model splitting the data into multiple collections using references, providing examples and use cases for each.', 'Explaining the types of relationships - one-to-one, one-to-many, and many-to-many, with clear examples for each type, providing a comprehensive understanding of how data models can represent different types of relationships in MongoDB. The chapter explains the types of relationships - one-to-one, one-to-many, and many-to-many, with clear examples for each type, providing a comprehensive understanding of how data models can represent different types of relationships in MongoDB.']}, {'end': 30167.307, 'start': 29673.633, 'title': 'Understanding mongodb operators', 'summary': 'Discusses the usage of mongodb operators, the three main types of operators, and the detailed explanation of comparison operators with examples, aiming to enhance the understanding of mongodb functionalities and query operations.', 'duration': 493.674, 'highlights': ["MongoDB's speed is one of its characteristics as it handles huge chunks of unstructured data MongoDB's speed is a key characteristic as it efficiently handles unstructured data", 'Operators in MongoDB are broadly classified into three types: query and projection operator, update operator, and aggregation pipeline operator MongoDB operators are broadly classified into three types: query and projection, update, and aggregation pipeline operators', 'Comparison operators in MongoDB, such as eq, ne, gt, gte, lt, lte, in, and nin, are used to compare expressions and retrieve data from documents Comparison operators in MongoDB, such as eq, ne, gt, gte, lt, lte, in, and nin, are used to compare and retrieve data from documents', 'The collection documents are basically the group of collections stored in the MongoDB database Collection documents are the group of collections stored in the MongoDB database']}], 'duration': 1378.066, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE28789241.jpg', 'highlights': ['The chapter emphasizes the importance of data modeling in MongoDB, highlighting its role in converting unstructured data into structured, optimized, and efficient storage, ensuring high data quality, and improving database performance.', 'Data modeling helps to create a simplified and optimized logical database that eliminates redundancy, reduces storage requirements, and enables efficient retrieval from the database, which is necessary for storing unstructured data (e.g., customer details) in a structured manner.', "Unlike SQL databases, MongoDB's collection does not require the documents to have the same schema, allowing for a flexible data modeling approach.", "The chapter explains the three types of data models - conceptual, logical, and physical, with the conceptual model representing the application's business logic, the logical model describing the data structure, and the physical model representing how the data will be stored in a specific database.", 'Operators in MongoDB are broadly classified into three types: query and projection, update, and aggregation pipeline operators']}, {'end': 30920.945, 'segs': [{'end': 30709.14, 'src': 'embed', 'start': 30680.438, 'weight': 0, 'content': [{'end': 30686.819, 'text': 'array operators in mongodb are basically used to query documents that include a field of arrays.', 'start': 30680.438, 'duration': 6.381}, {'end': 30692.901, 'text': 'now we basically again have three different types of operators used in mongodb.', 'start': 30686.819, 'duration': 6.082}, {'end': 30695.629, 'text': 'The first one is all operator.', 'start': 30694.008, 'duration': 1.621}, {'end': 30700.793, 'text': 'It returns documents from a collection if it matches all the values in the specified array.', 'start': 30695.99, 'duration': 4.803}, {'end': 30702.935, 'text': 'Next, we have the size operator.', 'start': 30701.374, 'duration': 1.561}, {'end': 30709.14, 'text': 'It returns documents from the collection to match an array with a provided number of elements in it.', 'start': 30703.095, 'duration': 6.045}], 'summary': 'Mongodb array operators: all matches all values, size matches specified number of elements.', 'duration': 28.702, 'max_score': 30680.438, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE30680438.jpg'}, {'end': 30755.527, 'src': 'embed', 'start': 30726.713, 'weight': 5, 'content': [{'end': 30732.476, 'text': "now, for first example, i've taken the all operator, which is an array operator.", 'start': 30726.713, 'duration': 5.763}, {'end': 30741.02, 'text': "so what i'm trying to find is i'm trying to find a element of value which has, you know, a notebook and a paper.", 'start': 30732.476, 'duration': 8.544}, {'end': 30747.583, 'text': 'so the query is followed as db.order.find, orders item all notebook and paper.', 'start': 30741.02, 'duration': 6.563}, {'end': 30755.527, 'text': 'so if you look into the image, i think we have only uh two documents where we have this fields.', 'start': 30747.583, 'duration': 7.944}], 'summary': "Using the 'all' operator to find elements with 'notebook' and 'paper' values, resulting in two documents with these fields.", 'duration': 28.814, 'max_score': 30726.713, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE30726713.jpg'}, {'end': 30878.38, 'src': 'embed', 'start': 30832.728, 'weight': 2, 'content': [{'end': 30842.378, 'text': 'Now again we have several mini operators like geospatl, comment operator and so many, but which are not that significant in its usage.', 'start': 30832.728, 'duration': 9.65}, {'end': 30851.327, 'text': "But anyways, if you want us to cover in our further tutorials, let us know wherein we'll try to cover a more detailed version of it,", 'start': 30843.099, 'duration': 8.228}, {'end': 30854.61, 'text': 'with a hands-on experience with the MongoDB database as well.', 'start': 30851.327, 'duration': 3.283}, {'end': 30860.408, 'text': 'and finally, let us discuss, uh, what is update operator, guys?', 'start': 30855.805, 'duration': 4.603}, {'end': 30870.155, 'text': 'and basically, mongodb offers a variety of field update operators to update the values of the fields and documents matching the specified condition.', 'start': 30860.408, 'duration': 9.747}, {'end': 30878.38, 'text': 'so it is basically similar to that of dml command, which is an update uh command, which is used to used to update the values in the columns.', 'start': 30870.155, 'duration': 8.225}], 'summary': 'Mongodb tutorial covers update operators and hands-on experience with the database.', 'duration': 45.652, 'max_score': 30832.728, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE30832728.jpg'}], 'start': 30167.307, 'title': 'Database query operators', 'summary': 'Explains comparison operators (eq, ne, gt, gte, lt, lte) and logical and element operators in mongodb, with examples and functionality, illustrating the number of documents returned and usage of each operator.', 'chapters': [{'end': 30399.513, 'start': 30167.307, 'title': 'Comparison operators in database queries', 'summary': 'Explains the use of comparison operators (eq, ne, gt, gte, lt, lte) in database queries, with examples demonstrating their functionality including the number of documents returned for each comparison operation.', 'duration': 232.206, 'highlights': ['The chapter explains the use of comparison operators (EQ, NE, GT, GTE, LT, LTE) in database queries, with examples demonstrating their functionality including the number of documents returned for each comparison operation. It provides a comprehensive overview of different comparison operators and their practical applications in querying a database, along with real-world examples.', 'The query for EQ returns all the documents where the payment mode is made through a card instead of cash, resulting in 2 documents returned for customers Rahul and Kirti. Illustrates the functionality of the EQ operator by providing a specific example and quantifying the number of documents returned.', 'The query for GT returns documents where the order total is greater than 3000, resulting in 1 document returned for customer Pranav. Demonstrates the use of the GT operator with a quantifiable result, showcasing its practical application in querying.', 'The query for LT returns documents where the order total is less than 2000, resulting in 1 document returned for customer Kirti. Highlights the practical usage of the LT operator with a specific example and quantifies the number of documents returned.']}, {'end': 30920.945, 'start': 30401.075, 'title': 'Logical and element operators in mongodb', 'summary': 'Covers logical and element operators in mongodb, including and, or, nor, not, exists, types, all, size, and elem match, along with their usage and examples, illustrating the functionality and results.', 'duration': 519.87, 'highlights': ['Logical operators in MongoDB MongoDB logical operators include AND, OR, NOR, and NOT, which return documents based on specified conditions, such as matching both expressions, matching either expression, not matching either expression, and not matching the query expression, demonstrated with examples.', 'Element operators - EXISTS and TYPES The EXISTS operator returns documents with a specific field, while TYPES operator returns documents if the field is of a specified type, both illustrated with examples like finding employee age greater than or equal to 35 and finding a field of type double integer.', "Array operators - ALL, SIZE, and ELEM MATCH Array operators in MongoDB, including ALL, SIZE, and ELEM MATCH, are used to query documents with array fields, returning documents matching all values in the specified array, matching the provided number of elements in an array, and matching a specified condition within each array element, explained with examples such as finding elements 'notebook' and 'paper' in an array and retrieving documents with a specified number of array elements."]}], 'duration': 753.638, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE30167307.jpg', 'highlights': ['The query for EQ returns all the documents where the payment mode is made through a card instead of cash, resulting in 2 documents returned for customers Rahul and Kirti. Illustrates the functionality of the EQ operator by providing a specific example and quantifying the number of documents returned.', 'The query for GT returns documents where the order total is greater than 3000, resulting in 1 document returned for customer Pranav. Demonstrates the use of the GT operator with a quantifiable result, showcasing its practical application in querying.', 'The query for LT returns documents where the order total is less than 2000, resulting in 1 document returned for customer Kirti. Highlights the practical usage of the LT operator with a specific example and quantifies the number of documents returned.', 'Logical operators in MongoDB MongoDB logical operators include AND, OR, NOR, and NOT, which return documents based on specified conditions, such as matching both expressions, matching either expression, not matching either expression, and not matching the query expression, demonstrated with examples.', 'Element operators - EXISTS and TYPES The EXISTS operator returns documents with a specific field, while TYPES operator returns documents if the field is of a specified type, both illustrated with examples like finding employee age greater than or equal to 35 and finding a field of type double integer.', "Array operators - ALL, SIZE, and ELEM MATCH Array operators in MongoDB, including ALL, SIZE, and ELEM MATCH, are used to query documents with array fields, returning documents matching all values in the specified array, matching the provided number of elements in an array, and matching a specified condition within each array element, explained with examples such as finding elements 'notebook' and 'paper' in an array and retrieving documents with a specified number of array elements."]}, {'end': 31774.588, 'segs': [{'end': 31121.87, 'src': 'embed', 'start': 31097.537, 'weight': 2, 'content': [{'end': 31105.443, 'text': 'DB will process a lot of unnecessary data and when you want to retrieve specific information from a large number of records.', 'start': 31097.537, 'duration': 7.906}, {'end': 31108.926, 'text': 'So to overcome this problem, we use projection query.', 'start': 31105.823, 'duration': 3.103}, {'end': 31110.487, 'text': 'Now some of the reasons.', 'start': 31109.026, 'duration': 1.461}, {'end': 31114.688, 'text': 'now, When using projection to remove unused or unused fields,', 'start': 31110.487, 'duration': 4.201}, {'end': 31121.87, 'text': 'the MongoDB server will have to fetch each full document into its memory and then filter the results to return.', 'start': 31114.688, 'duration': 7.182}], 'summary': 'Projection query helps retrieve specific information from large records, reducing unnecessary data processing.', 'duration': 24.333, 'max_score': 31097.537, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE31097537.jpg'}, {'end': 31531.457, 'src': 'embed', 'start': 31504.392, 'weight': 0, 'content': [{'end': 31510.837, 'text': 'email, phone number, hiring date, job, id, salary, manager, id, department id and so on.', 'start': 31504.392, 'duration': 6.445}, {'end': 31513.878, 'text': 'so you can see we have a lot of documents.', 'start': 31511.317, 'duration': 2.561}, {'end': 31517.12, 'text': "so let's just count how many documents we have.", 'start': 31513.878, 'duration': 3.242}, {'end': 31521.582, 'text': 'for that you can use the count statement.', 'start': 31517.12, 'duration': 4.462}, {'end': 31525.973, 'text': 'so db.employee.count.', 'start': 31521.582, 'duration': 4.391}, {'end': 31531.457, 'text': 'so you can see we have a total of 50 documents present in our employee collection.', 'start': 31525.973, 'duration': 5.484}], 'summary': 'The employee collection contains 50 documents with various details like email, phone number, hiring date, job, id, salary, manager, and department id.', 'duration': 27.065, 'max_score': 31504.392, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE31504392.jpg'}, {'end': 31709.374, 'src': 'embed', 'start': 31651.618, 'weight': 4, 'content': [{'end': 31663.171, 'text': 'so we can see we have employee id of the employee 114 115 116 117 118 and 119 whose all their department is 30.', 'start': 31651.618, 'duration': 11.553}, {'end': 31671.072, 'text': "Now, again, even if I'm returning a particular field or a condition, it is also, you know, retrieving all the fields from all the documents.", 'start': 31663.171, 'duration': 7.901}, {'end': 31672.633, 'text': "Now, I don't want that.", 'start': 31671.452, 'duration': 1.181}, {'end': 31674.673, 'text': 'Now, I want only a particular field.', 'start': 31672.673, 'duration': 2}, {'end': 31681.214, 'text': 'So, what in that case, we will project certain fields without returning all the fields from our documents.', 'start': 31675.013, 'duration': 6.201}, {'end': 31683.014, 'text': 'So, let us see how it works.', 'start': 31681.534, 'duration': 1.48}, {'end': 31687.195, 'text': 'So, the query is followed as db.', 'start': 31683.414, 'duration': 3.781}, {'end': 31707.213, 'text': "mention the collection name, employee, find, open the square brackets and let's say uh, i want to retrieve only the first name, first name.", 'start': 31688.215, 'duration': 18.998}, {'end': 31709.374, 'text': "so i'm setting it as one.", 'start': 31707.213, 'duration': 2.161}], 'summary': 'Query retrieves specific fields from documents in the employee collection.', 'duration': 57.756, 'max_score': 31651.618, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE31651618.jpg'}, {'end': 31774.588, 'src': 'embed', 'start': 31739.113, 'weight': 3, 'content': [{'end': 31740.953, 'text': 'so we do not have any output here.', 'start': 31739.113, 'duration': 1.84}, {'end': 31745.434, 'text': "guys, that is because we haven't mentioned the parenthesis, uh before, the fine method.", 'start': 31740.953, 'duration': 4.481}, {'end': 31748.835, 'text': "so let me just copy paste and we'll see how it is.", 'start': 31745.434, 'duration': 3.401}, {'end': 31774.588, 'text': "so before, after the find, we'll have to mention the uh parenthesis again and then i think we're about to go now.", 'start': 31763.797, 'duration': 10.791}], 'summary': 'Fixing the code by adding parentheses before the find method.', 'duration': 35.475, 'max_score': 31739.113, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE31739113.jpg'}], 'start': 30920.945, 'title': 'Mongodb projection', 'summary': 'Covers mongodb projection, its usage, syntax, and benefits. it includes implementing projection, retrieving databases and collections, using the find method, and projecting specific fields, with examples showing a total of 50 documents present in the employee collection.', 'chapters': [{'end': 31375.444, 'start': 30920.945, 'title': 'Mongodb projection overview', 'summary': 'Covers the overview of mongodb projection, its usage, syntax, and benefits, highlighting the importance of retrieving specific data, improving performance, and reducing unnecessary data processing.', 'duration': 454.499, 'highlights': ['MongoDB projection helps to return specific fields from the query or collection, allowing for the selection of necessary data. It limits the amount of fields in the data present in a document, improving performance and reducing unnecessary data processing.', 'Using projection in MongoDB can save significant network bandwidth and memory usage by returning indexed query results without fetching the full documents. It reduces memory usage, saves network bandwidth, and improves performance by returning indexed query results without fetching full documents.', 'The syntax for MongoDB projection involves using the find method and specifying the field names and their corresponding values to retrieve specific data. The syntax includes using the find method and specifying field names with their corresponding values, enabling the retrieval of specific data from documents.']}, {'end': 31774.588, 'start': 31375.984, 'title': 'Implementing mongodb projection', 'summary': 'Covers implementing mongodb projection, including retrieving databases and collections, using the find method to list documents, and projecting specific fields, with examples showing a total of 50 documents present in the employee collection and how to retrieve specific fields using mongodb projection.', 'duration': 398.604, 'highlights': ["It will list out all the databases that are present, including admin, config, local, and simply code one. The command 'show dvs' is used to list out all the databases present in MongoDB, showing admin, config, local, and simply code one.", "The find method is used to list out all the documents, with a total of 50 documents present in the employee collection. The 'find' method is used to list out all the documents in the employee collection, showing a total of 50 documents present.", "The count statement is used to show a total of 50 documents present in the employee collection. The 'count' statement is used to show that there are a total of 50 documents present in the employee collection.", 'The query is executed using projection to retrieve specific fields like first name, last name, and salary from the employee collection. Projection is used to retrieve specific fields like first name, last name, and salary from the employee collection.', 'The example shows using the find method to list all the documents of the employees whose department id is 30. An example demonstrates using the find method to list all the documents of the employees whose department id is 30.']}], 'duration': 853.643, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE30920945.jpg', 'highlights': ['MongoDB projection helps to return specific fields from the query or collection, allowing for the selection of necessary data.', 'Using projection in MongoDB can save significant network bandwidth and memory usage by returning indexed query results without fetching the full documents.', 'The syntax for MongoDB projection involves using the find method and specifying the field names and their corresponding values to retrieve specific data.', 'The find method is used to list out all the documents, with a total of 50 documents present in the employee collection.', 'The count statement is used to show a total of 50 documents present in the employee collection.', 'The query is executed using projection to retrieve specific fields like first name, last name, and salary from the employee collection.']}, {'end': 33153.845, 'segs': [{'end': 31938.872, 'src': 'embed', 'start': 31892.308, 'weight': 0, 'content': [{'end': 31901.016, 'text': 'in such case, if you want to return a specific number of fields, only now a document can have any number of fields, like 10,, 20,, 30, 40 and so on.', 'start': 31892.308, 'duration': 8.708}, {'end': 31909.739, 'text': 'So in some cases, if you want to retrieve or specify only certain number of fields in your resultant set,', 'start': 31902.797, 'duration': 6.942}, {'end': 31912.4, 'text': 'in that case projection operator can be quite useful.', 'start': 31909.739, 'duration': 2.661}, {'end': 31915.501, 'text': 'And I know it is quite confusing at the beginning.', 'start': 31912.84, 'duration': 2.661}, {'end': 31920.022, 'text': 'So, you just need more practice to understand this in a more better way.', 'start': 31915.921, 'duration': 4.101}, {'end': 31924.522, 'text': "That brings us to the end of today's session, guys.", 'start': 31922.441, 'duration': 2.081}, {'end': 31929.145, 'text': "I hope you understood all the topics and concepts covered in today's session.", 'start': 31925.003, 'duration': 4.142}, {'end': 31933.128, 'text': 'So sorting and limiting are one of the necessary database operations.', 'start': 31929.466, 'duration': 3.662}, {'end': 31938.872, 'text': 'It helps to simplify the readability of the data and sort the data as per the user requirement.', 'start': 31933.428, 'duration': 5.444}], 'summary': 'Projection operator helpful for retrieving specific fields, sorting and limiting data.', 'duration': 46.564, 'max_score': 31892.308, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE31892308.jpg'}, {'end': 31983.46, 'src': 'embed', 'start': 31955.66, 'weight': 1, 'content': [{'end': 31962.142, 'text': 'So in this tutorial, you will learn all about the sorting and limiting concepts and how it can be implemented in MongoDB database.', 'start': 31955.66, 'duration': 6.482}, {'end': 31968.325, 'text': "But before we get started, if you are new to the channel and haven't subscribed already, consider getting subscribed to our channel.", 'start': 31962.663, 'duration': 5.662}, {'end': 31974.307, 'text': 'simply quote to stay updated with all the latest tech content and hit that bell icon to never miss an update from us.', 'start': 31968.325, 'duration': 5.982}, {'end': 31977.228, 'text': "So without any further ado, let's get started.", 'start': 31974.767, 'duration': 2.461}, {'end': 31983.46, 'text': 'So before getting into the execution part, let us quickly understand what is sorting in MongoDB.', 'start': 31978.598, 'duration': 4.862}], 'summary': 'Learn about sorting and limiting in mongodb database.', 'duration': 27.8, 'max_score': 31955.66, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE31955660.jpg'}], 'start': 31774.588, 'title': 'Mongodb query operators', 'summary': 'Covers mongodb query operators including projection, sorting, and limiting methods with examples, highlighting their syntax, usage, and benefits when handling large datasets, providing a comprehensive understanding of these concepts.', 'chapters': [{'end': 32077.801, 'start': 31774.588, 'title': 'Mongodb projection & sorting', 'summary': 'Covers the projection query operator in mongodb, explaining how to project only certain fields from documents, with a mention of the benefits when handling large datasets. it also delves into the sorting concept in mongodb, elucidating the syntax and usage of the sort method to arrange data in ascending or descending order.', 'duration': 303.213, 'highlights': ['The chapter covers the projection query operator in MongoDB Explains the usage of the projection query operator to project only certain fields from documents.', 'Sorting concept in MongoDB Provides insights into the sorting concept in MongoDB, emphasizing the ordering of data in both increasing and decreasing order based on relationships between data items.', 'Benefits of projection query operator when handling large datasets Mentions the usefulness of the projection query operator when dealing with a large amount of unstructured data, such as 10,000 or even a million records.', 'Syntax and usage of sort method in MongoDB Elaborates on the syntax and usage of the sort method in MongoDB to arrange data in ascending or descending order.']}, {'end': 32336.486, 'start': 32077.801, 'title': 'Sorting in mongodb', 'summary': 'Explains the working of the sort method in mongodb with examples of sorting based on a single field and multiple fields, highlighting the impact on the order of records and the importance of unique fields like id in sorting.', 'duration': 258.685, 'highlights': ['The sort method in MongoDB is demonstrated using examples of sorting based on a single field and multiple fields, showcasing the impact on the order of records and the importance of unique fields like ID in sorting. The chapter explains the working of the sort method in MongoDB with examples of sorting based on a single field and multiple fields, highlighting the impact on the order of records and the importance of unique fields like ID in sorting.', 'Sorting based on a single field arranges the data in ascending or descending order, demonstrated through an example of sorting customer details alphabetically in ascending order. Sorting based on a single field arranges the data in ascending or descending order, demonstrated through an example of sorting customer details alphabetically in ascending order.', 'Sorting based on multiple fields is illustrated with an example of sorting pet information based on type, weight, and ID, showcasing the impact on the order of records when sorting based on multiple criteria. Sorting based on multiple fields is illustrated with an example of sorting pet information based on type, weight, and ID, showcasing the impact on the order of records when sorting based on multiple criteria.', 'The importance of a unique field like ID in the sorting process is emphasized, as it ensures a consistent order of records and prevents variability in the output. The importance of a unique field like ID in the sorting process is emphasized, as it ensures a consistent order of records and prevents variability in the output.']}, {'end': 32535.069, 'start': 32336.486, 'title': 'Mongodb limit method', 'summary': 'Explains the limit method in mongodb, which is used to restrict the number of records displayed in a resultant set, with examples of limiting and sorting data, such as limiting to the first 5 records or sorting in ascending order based on customer names and limiting to two values.', 'duration': 198.583, 'highlights': ['The limit method in MongoDB is used to limit the number of records. The limit method in MongoDB restricts the number of records displayed in a resultant set.', 'The syntax for limiting records is db.collectionname.find().limit(value). The syntax for limiting records is db.collectionname.find().limit(value), where the value specifies the number of records to be displayed.', 'Example of limiting to the first 5 records: db.collectionname.find().limit(5). An example of limiting to the first 5 records is db.collectionname.find().limit(5).', 'Sorting in ascending order based on customer names and limiting to two values: db.collectionname.find().sort({customer: 1}).limit(2). Sorting in ascending order based on customer names and limiting to two values is achieved using db.collectionname.find().sort({customer: 1}).limit(2).', 'The limit clause is used to retrieve only a certain number of records from a collection. The limit clause is used to retrieve only a certain number of records from a collection, for example, retrieving only the first two documents using db.orders.find().limit(2).']}, {'end': 32827.716, 'start': 32535.069, 'title': 'Sorting data in mongodb', 'summary': 'Explains how to retrieve and sort data in mongodb using the find and sort methods, projecting specific fields and sorting them in ascending and descending order based on the manager id, resulting in a clear understanding of the sorted data.', 'duration': 292.647, 'highlights': ['The query dd.employee.find mention the sort and within the sort mention the field name which is manager ID with the order as one will sort the order in ascending order.', 'The query dv.employee.find projects specific fields like first name, last name, and manager ID, sorts the data based on the manager ID in ascending order, resulting in a clear display of the sorted data.', 'The data includes fields such as employee ID, first name, last name, email, phone number, hiring date, job ID, salary, manager ID, and department ID.', 'The sorted data displays the first manager ID as 100, followed by 101, 103, and so on, providing a clear representation of the ascending order sorting.', 'Mentioning the manager ID in the projection field is crucial for sorting it and not encountering errors during the execution of the query.']}, {'end': 33153.845, 'start': 32827.716, 'title': 'Sorting and limiting in mongodb', 'summary': 'Explains sorting in mongodb, covering single and multiple field sorting, and also demonstrates the use of the limit clause to restrict the number of records in the resultant set, with examples showing the execution and output of sorting and limiting operations.', 'duration': 326.129, 'highlights': ['The chapter explains sorting in MongoDB, covering single and multiple field sorting It demonstrates how to sort data based on fields like manager ID and salary, and explains the concept of sorting in ascending and descending order.', 'The use of the limit clause to restrict the number of records in the resultant set, with examples showing the execution and output of sorting and limiting operations It illustrates the use of the limit clause to restrict the number of records in the resultant set and shows examples of limiting the output to a specified number of records.']}], 'duration': 1379.257, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE31774588.jpg', 'highlights': ['Covers mongodb query operators including projection, sorting, and limiting methods with examples, highlighting their syntax, usage, and benefits when handling large datasets.', 'The chapter explains sorting in MongoDB, covering single and multiple field sorting It demonstrates how to sort data based on fields like manager ID and salary, and explains the concept of sorting in ascending and descending order.', 'The sort method in MongoDB is demonstrated using examples of sorting based on a single field and multiple fields, showcasing the impact on the order of records and the importance of unique fields like ID in sorting.', 'The chapter covers the projection query operator in MongoDB Explains the usage of the projection query operator to project only certain fields from documents.', 'The limit method in MongoDB is used to limit the number of records. The limit method in MongoDB restricts the number of records displayed in a resultant set.']}, {'end': 34627.005, 'segs': [{'end': 33622.449, 'src': 'embed', 'start': 33597.899, 'weight': 0, 'content': [{'end': 33606.942, 'text': 'for example, we have for first id for customer, rahul, we have four different array values of order items like item name, notebook, an item name,', 'start': 33597.899, 'duration': 9.043}, {'end': 33609.863, 'text': 'paper, item name, journal, item name, postcard.', 'start': 33606.942, 'duration': 2.921}, {'end': 33622.449, 'text': "So if I want to create a multi-key index, I'll just simply write a query as db.orders.createIndex and within the parenthesis mention the field name,", 'start': 33610.205, 'duration': 12.244}], 'summary': 'Demonstrating creation of a multi-key index for customer orders with various items.', 'duration': 24.55, 'max_score': 33597.899, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE33597899.jpg'}, {'end': 34154.047, 'src': 'embed', 'start': 34118.048, 'weight': 3, 'content': [{'end': 34119.75, 'text': "So I'm just recapping what we have covered.", 'start': 34118.048, 'duration': 1.702}, {'end': 34127.438, 'text': 'And indexes can be created on just one field by using the single field index method or multiple fields using the compound index.', 'start': 34120.391, 'duration': 7.047}, {'end': 34132.223, 'text': 'And you can even create indexes on array of fields using the multi key index as well.', 'start': 34127.758, 'duration': 4.465}, {'end': 34134.939, 'text': 'so what is advanced indexing?', 'start': 34132.938, 'duration': 2.001}, {'end': 34137.08, 'text': 'now we all know what indexing is mongodb right,', 'start': 34134.939, 'duration': 2.141}, {'end': 34143.182, 'text': 'which is an essential component which improves the performance of the data retrieval speed in the database.', 'start': 34137.08, 'duration': 6.102}, {'end': 34154.047, 'text': 'so mongodb indexing is a special data structure on which the index is created to hold the data of specific fields of documents and in the absence of indexing in mongodb,', 'start': 34143.182, 'duration': 10.865}], 'summary': 'Indexes in mongodb improve data retrieval speed and can be created on single or multiple fields using different methods.', 'duration': 35.999, 'max_score': 34118.048, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE34118048.jpg'}, {'end': 34555.33, 'src': 'embed', 'start': 34525.221, 'weight': 4, 'content': [{'end': 34527.362, 'text': 'so let us now understand how it is executing.', 'start': 34525.221, 'duration': 2.141}, {'end': 34528.563, 'text': 'so let us explain.', 'start': 34527.362, 'duration': 1.201}, {'end': 34537.179, 'text': 'uh, click on the explain button So you can see that the documents it is examining is basically the all the documents that is present in the collection.', 'start': 34528.563, 'duration': 8.616}, {'end': 34538.86, 'text': 'That is thirty two thousand nine twenty eight.', 'start': 34537.219, 'duration': 1.641}, {'end': 34543.563, 'text': 'Now, out of that, it is returning to two hundred ninety six.', 'start': 34539.18, 'duration': 4.383}, {'end': 34546.725, 'text': 'So as you can see, it is a time taking process.', 'start': 34543.943, 'duration': 2.782}, {'end': 34548.626, 'text': 'It is going through each and every document.', 'start': 34546.785, 'duration': 1.841}, {'end': 34555.33, 'text': 'Now, the thing is, we only have only around thirteen hundred documents where the department is police and the job title is sergeant.', 'start': 34548.966, 'duration': 6.364}], 'summary': 'The execution examines 32,928 documents and returns 296, taking time. only 1,300 documents are police sergeants.', 'duration': 30.109, 'max_score': 34525.221, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE34525221.jpg'}, {'end': 34599.809, 'src': 'embed', 'start': 34570.876, 'weight': 1, 'content': [{'end': 34572.637, 'text': 'so let us create another index.', 'start': 34570.876, 'duration': 1.761}, {'end': 34579.159, 'text': 'for job title, let us create an index again.', 'start': 34572.637, 'duration': 6.522}, {'end': 34581.78, 'text': 'so, as you can see, we have created the index successfully.', 'start': 34579.159, 'duration': 2.621}, {'end': 34584.981, 'text': 'so let us now try to find the documents all right.', 'start': 34581.78, 'duration': 3.201}, {'end': 34593.945, 'text': 'it will find that it will fetch all the documents and let us now uh, basically, uh, click on the explain and see how it does.', 'start': 34584.981, 'duration': 8.964}, {'end': 34599.809, 'text': 'so, as you can see now, the documents, that is, that it examined now, is 1296, which we have seen earlier,', 'start': 34593.945, 'duration': 5.864}], 'summary': 'Created index for job title, found 1296 documents.', 'duration': 28.933, 'max_score': 34570.876, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE34570876.jpg'}, {'end': 34637.25, 'src': 'embed', 'start': 34611.457, 'weight': 2, 'content': [{'end': 34619.942, 'text': 'as you can see, the actual query execution time is also reduced drastically, from almost 432 milliseconds to almost 16 milliseconds.', 'start': 34611.457, 'duration': 8.485}, {'end': 34625.525, 'text': 'so it will also vary, like if you click again, it will change to 6 milliseconds now that it has find the details.', 'start': 34619.942, 'duration': 5.583}, {'end': 34627.005, 'text': 'so it keeps on changing.', 'start': 34625.525, 'duration': 1.48}, {'end': 34637.25, 'text': 'so index basically provides the user to efficiently navigate through that data which is required by them, instead of searching the whole data.', 'start': 34627.005, 'duration': 10.245}], 'summary': 'Query execution time decreased from 432ms to 16ms with index, reaching 6ms upon subsequent clicks, facilitating efficient data navigation.', 'duration': 25.793, 'max_score': 34611.457, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE34611457.jpg'}], 'start': 33154.006, 'title': 'Mongodb indexing fundamentals', 'summary': 'Covers the basics, types, creation, and management of indexes in mongodb, highlighting their impact on query efficiency and database performance. it discusses single field, compound, and multi-key indexes, and demonstrates the significant improvement in query execution time from 23 milliseconds to 6 milliseconds after creating multiple indexes.', 'chapters': [{'end': 33415.636, 'start': 33154.006, 'title': 'Mongodb indexing basics', 'summary': 'Covers the basics of indexing in mongodb, including the purpose of indexing, the process of creating an index, and its impact on query efficiency, highlighting that indexing can significantly improve search efficiency and reduce the need for collection scans.', 'duration': 261.63, 'highlights': ['Indexing significantly improves search efficiency as it makes it unnecessary to perform a collection scan, which involves looking through every document in a collection. Indexing in MongoDB eliminates the need for collection scans, improving search efficiency.', 'Creating an index in MongoDB is done using the createIndex method, where the field name and sorting order are specified, impacting the search efficiency of the database. The process of creating an index in MongoDB using the createIndex method impacts the search efficiency of the database.', "MongoDB's indexes can store the value of a specific field or set of fields ordered by the value of the field, impacting the search efficiency and data access in the database. Indexes in MongoDB store field values in a specific order, impacting search efficiency and data access."]}, {'end': 33642.817, 'start': 33416.837, 'title': 'Types of indexes in mongodb', 'summary': 'Discusses the three types of indexes in mongodb - single field index, compound index, and multi-key index, detailing their syntax and usage with examples.', 'duration': 225.98, 'highlights': ['The chapter discusses the three types of indexes in MongoDB The chapter introduces the three types of indexes in MongoDB: single field index, compound index, and multi-key index.', 'Detailing the syntax and usage with examples The chapter provides detailed syntax and examples for creating indexes, including single field index, compound index, and multi-key index.', 'The syntax is db.collectionName.createIndex and within the parenthesis field name. So, you can either index them in the order of ascending or descending by mentioning 1 or minus 1. The syntax for creating an index in MongoDB is explained, including the option to index fields in ascending or descending order.', 'Creating an index for multiple fields in a collection using the syntax db.collectionName.createIndex The process of creating a compound index for multiple fields in a collection is detailed, including the syntax and usage.', 'Explaining the process of creating a multi-key index for array fields in MongoDB The chapter explains the process of creating a multi-key index for array fields in MongoDB, including its syntax and functionality.']}, {'end': 33932.885, 'start': 33643.417, 'title': 'Mongodb indexing basics', 'summary': "Covers creating and managing indexes in mongodb, including creating a single field index on the 'salary' field, viewing and dropping indexes, and understanding their role in improving search efficiency and database performance.", 'duration': 289.468, 'highlights': ["Creating a single field index on the 'salary' field The speaker demonstrates creating a single field index on the 'salary' field in MongoDB, emphasizing the use of 'db.employee.createIndex' and the impact on search efficiency.", "Viewing and dropping indexes The process of viewing and dropping indexes is explained, with a demonstration of using 'getIndexes' and 'dropIndex' to manage indexes, showcasing the removal of the 'email' index from the collection.", 'Understanding the role of indexes in improving search efficiency and performance optimization The importance of indexes in improving search efficiency and database performance is highlighted, emphasizing the role of index creation for achieving performance optimization not directly visible externally.']}, {'end': 34246.855, 'start': 33933.305, 'title': 'Creating compound index in mongodb', 'summary': 'Explains how to create a compound index in mongodb using multiple fields, such as job id and department id, and highlights the importance of indexes for efficient data retrieval in a collection.', 'duration': 313.55, 'highlights': ['The chapter explains how to create a compound index in MongoDB using multiple fields, such as job ID and department ID.', 'Indexes are important for faster and efficient searching of documents in a collection, and can be created by using the create index method.', 'When creating an index for a field containing an array, MongoDB will create separate index entries for every element in the array data.']}, {'end': 34627.005, 'start': 34246.855, 'title': 'Database indexing for query performance', 'summary': 'Discusses the impact of indexing on query performance, demonstrating the reduction in query execution time from 23 milliseconds to 6 milliseconds after creating multiple indexes, resulting in better performance, particularly when handling a large number of documents.', 'duration': 380.15, 'highlights': ['Creating multiple indexes reduced the query execution time from 23 milliseconds to 6 milliseconds, significantly improving performance.', 'Indexing the department and job title fields resulted in a drastic reduction in query execution time from 432 milliseconds to 16 milliseconds, showcasing the impact of indexing on query performance.', 'Indexing the department field reduced the query execution time from 23 milliseconds to 17 milliseconds, demonstrating the positive impact of indexing on query performance.']}], 'duration': 1472.999, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE33154006.jpg', 'highlights': ['Creating multiple indexes reduced query execution time from 23ms to 6ms, significantly improving performance.', 'Indexing the department and job title fields resulted in a drastic reduction in query execution time from 432ms to 16ms, showcasing the impact of indexing on query performance.', 'The chapter introduces the three types of indexes in MongoDB: single field index, compound index, and multi-key index.', 'The process of creating a compound index for multiple fields in a collection is detailed, including the syntax and usage.', 'The importance of indexes in improving search efficiency and database performance is highlighted, emphasizing the role of index creation for achieving performance optimization not directly visible externally.']}, {'end': 35880.226, 'segs': [{'end': 35208.526, 'src': 'embed', 'start': 35177.627, 'weight': 1, 'content': [{'end': 35182.232, 'text': 'Now, just like the group by clause in SQL, you can use the group, you know, function here as well.', 'start': 35177.627, 'duration': 4.605}, {'end': 35191.077, 'text': 'In order to group all this similar or the related type of data in your you know, uh, present in your collections.', 'start': 35182.613, 'duration': 8.464}, {'end': 35194.999, 'text': 'That is the data that is present in your documents to.', 'start': 35191.237, 'duration': 3.762}, {'end': 35198.721, 'text': 'in order to retrieve the similar kind of data, you can use the group next sort.', 'start': 35194.999, 'duration': 3.722}, {'end': 35202.763, 'text': 'again, sorting can be done in any other way, like from ascending order or descending order.', 'start': 35198.721, 'duration': 4.042}, {'end': 35208.526, 'text': 'Next we have the project, as we discussed earlier in our previous tutorial, project is used to uh, you know,', 'start': 35203.203, 'duration': 5.323}], 'summary': 'Using group and sort functions to organize and retrieve similar data in collections.', 'duration': 30.899, 'max_score': 35177.627, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE35177627.jpg'}, {'end': 35286.988, 'src': 'embed', 'start': 35260.185, 'weight': 0, 'content': [{'end': 35266.349, 'text': 'So we have only three records that have the status as field and their value is A.', 'start': 35260.185, 'duration': 6.164}, {'end': 35269.251, 'text': 'So we have sorted initially with the match command.', 'start': 35266.349, 'duration': 2.902}, {'end': 35274.736, 'text': "Next we want to group the values in the order of their, let's say IDs.", 'start': 35269.291, 'duration': 5.445}, {'end': 35281.002, 'text': 'And then, so if you look at here, we have two similar IDs, which is A123 and B212.', 'start': 35275.377, 'duration': 5.625}, {'end': 35286.988, 'text': 'So what group does is it will match all this similar and related fields together and produce a result.', 'start': 35281.343, 'duration': 5.645}], 'summary': 'Three records with status field a are sorted and grouped by ids to produce results.', 'duration': 26.803, 'max_score': 35260.185, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE35260185.jpg'}, {'end': 35416.134, 'src': 'embed', 'start': 35388.722, 'weight': 3, 'content': [{'end': 35392.084, 'text': 'now. so let us jump into mongodb shell for execution part,', 'start': 35388.722, 'duration': 3.362}, {'end': 35400.386, 'text': 'where we will perform uh different operations using the aggregation pipeline stages and see how they are getting implemented,', 'start': 35392.084, 'duration': 8.302}, {'end': 35405.152, 'text': 'and also perform a detailed analysis on the collection that we have,', 'start': 35400.386, 'duration': 4.766}, {'end': 35413.123, 'text': 'and we will bring out some inferences using the aggregation operations using various expressions like sum, average, minimum and maximum.', 'start': 35405.152, 'duration': 7.971}, {'end': 35416.134, 'text': 'So without any further delay, let us jump into MongoDB shell.', 'start': 35413.533, 'duration': 2.601}], 'summary': 'Performing mongodb aggregation operations for analysis and inference.', 'duration': 27.412, 'max_score': 35388.722, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE35388722.jpg'}, {'end': 35756.166, 'src': 'embed', 'start': 35728.911, 'weight': 2, 'content': [{'end': 35733.532, 'text': 'So this is how you can use the match and group stages where you can combine both these as well.', 'start': 35728.911, 'duration': 4.621}, {'end': 35741.855, 'text': 'So next, let us look at how to create an aggregation operation using one of the expression that we have like count average sum or minimum.', 'start': 35733.892, 'duration': 7.963}, {'end': 35748.825, 'text': "Now let's say if I want to count the total employees in a particular department, In that case I'll basically use the match statement,", 'start': 35742.215, 'duration': 6.61}, {'end': 35756.166, 'text': 'wherein it will group all the values of the employees whose department ID is in a particular value.', 'start': 35748.825, 'duration': 7.341}], 'summary': 'Using match and group stages to aggregate data, e.g., counting total employees in a department.', 'duration': 27.255, 'max_score': 35728.911, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE35728911.jpg'}], 'start': 34627.005, 'title': 'Mongodb indexing and aggregation', 'summary': 'Covers advanced indexing in mongodb for efficient querying of sub array and sub document fields, including geospatial, text, and hashed indexing. it also explains mongodb aggregation operations for data processing, grouping, filtering, and analyzing data changes, with insights into aggregation pipeline stages and specific operations such as sum, average, minimum, maximum, and push.', 'chapters': [{'end': 34967.504, 'start': 34627.005, 'title': 'Advanced indexing in mongodb', 'summary': 'Explains the need for advanced indexing in mongodb to efficiently query sub array and sub document fields, with examples of creating indexes for array and sub document fields as well as introducing other advanced indexing techniques such as geospatial, text, and hashed indexing.', 'duration': 340.499, 'highlights': ['The need for advanced indexing in MongoDB to efficiently query sub array and sub document fields Explains the need for advanced indexing to efficiently query sub array and sub document fields, highlighting the challenge of querying sub array fields and the solution through advanced indexing.', 'Creating indexes for array and sub document fields in MongoDB Explains the process of creating indexes for array and sub document fields in MongoDB, including the syntax and the importance of indexing sub document fields for efficient querying.', 'Introduction of other advanced indexing techniques such as geospatial, text, and hashed indexing Introduces other advanced indexing techniques in MongoDB, including geospatial, text, and hashed indexing, highlighting their specific applications and benefits in database queries.']}, {'end': 35219.369, 'start': 34968.125, 'title': 'Mongodb aggregation overview', 'summary': 'Explains how mongodb processes data records through aggregation operations, offering a wide range of aggregation operations, and the reasons for using aggregation, such as grouping, filtering, and analyzing data changes.', 'duration': 251.244, 'highlights': ['MongoDB processes data records through aggregation operations and offers a wide range of aggregation operations MongoDB processes data records by grouping multiple documents in a collection, applying aggregation operations, and providing a single computed result.', "Explanation of aggregation in MongoDB and its similarity to SQL aggregation method The chapter explains the similarity between MongoDB's aggregation method and the SQL aggregation method, using operations like count, average, sum, minimum, and value for complex aggregation operations.", 'Reasons for using aggregation in MongoDB, such as grouping, filtering, and analyzing data changes The chapter outlines the importance of aggregation in MongoDB for gathering data from different sources, grouping values from multiple documents, and analyzing unstructured data through filtration and sorting.', 'Overview of aggregation pipeline stages: match, group, sort, and project The chapter provides an overview of the four aggregation pipeline stages, including match for filtering, group for grouping similar data, sort for sorting in ascending or descending order, and project for removing unnecessary fields.']}, {'end': 35437.313, 'start': 35219.849, 'title': 'Aggregation in mongodb', 'summary': 'Explains how aggregation works in mongodb, including the match, group, sort, and aggregate functions, with examples and specific aggregation operations such as sum, average, minimum, maximum, and push, providing insights into the implementation and usage of the aggregation pipeline stages.', 'duration': 217.464, 'highlights': ['Aggregation pipeline stages explanation The chapter details the step-by-step process of the aggregation pipeline stages, including match, group, sort, and aggregate functions, with an example of how they are implemented in MongoDB.', 'Specific aggregation operations (sum, average, minimum, maximum, and push) The specific aggregation operations such as sum, average, minimum, maximum, and push are elaborated and their applications in MongoDB are explained with examples.', 'Example of aggregation operation using match, group, and sort An example of an aggregation operation is provided, demonstrating the use of match to filter documents, group to combine related fields, and sort to arrange the data, with quantifiable data showcasing the process and outcome.', 'Implementation and usage insights of aggregation functions Insights are shared into the implementation and usage of aggregation functions, including expressions like sum, average, minimum, and maximum, along with the analysis of the collection using these functions.', 'Interactive execution and analysis in MongoDB shell The chapter emphasizes interactive execution and analysis in MongoDB shell, encouraging readers to perform different aggregation operations and inferences using the aggregation pipeline stages and various expressions.']}, {'end': 35880.226, 'start': 35437.313, 'title': 'Mongodb aggregation operations', 'summary': 'Discusses the usage of mongodb aggregate operations to retrieve employee records based on department ids, group department ids, and count the total employees in a specific department, with examples of queries and their results.', 'duration': 442.913, 'highlights': ['Using match aggregation to retrieve employees based on department ID The chapter discusses using the match aggregation method to retrieve records of employees whose department ID belongs to 100, resulting in the retrieval of records for employee IDs 108, 109, 110, 111, 112, and 113, all belonging to department ID 100.', 'Grouping department IDs using the group aggregation method The explanation of using the group aggregation method to group all the department IDs present in the collection, displaying various department IDs like 60, 10, 30, 70, 40, 110, 100, 50, 20, and 98, along with the purpose of using the group stage and its functionality.', 'Counting total employees in a specific department using aggregation An example of using the count function within the match group stage to count the total employees in a specific department, with a demonstration of counting 5 employees in department 60 and 6 employees in department 100.']}], 'duration': 1253.221, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE34627005.jpg', 'highlights': ['Introduction of other advanced indexing techniques such as geospatial, text, and hashed indexing Introduces other advanced indexing techniques in MongoDB, including geospatial, text, and hashed indexing, highlighting their specific applications and benefits in database queries.', "Explanation of aggregation in MongoDB and its similarity to SQL aggregation method The chapter explains the similarity between MongoDB's aggregation method and the SQL aggregation method, using operations like count, average, sum, minimum, and value for complex aggregation operations.", 'Specific aggregation operations (sum, average, minimum, maximum, and push) The specific aggregation operations such as sum, average, minimum, maximum, and push are elaborated and their applications in MongoDB are explained with examples.', 'Using match aggregation to retrieve employees based on department ID The chapter discusses using the match aggregation method to retrieve records of employees whose department ID belongs to 100, resulting in the retrieval of records for employee IDs 108, 109, 110, 111, 112, and 113, all belonging to department ID 100.']}, {'end': 37449.916, 'segs': [{'end': 36012.979, 'src': 'embed', 'start': 35983.326, 'weight': 5, 'content': [{'end': 35991.628, 'text': 'DBREFs are references from one document to another using the value of the first document ID field, collection name and optionally its database.', 'start': 35983.326, 'duration': 8.302}, {'end': 35998.871, 'text': 'DBREFs basically allow you to more easily reference documents stored in multiple collections or database.', 'start': 35992.188, 'duration': 6.683}, {'end': 36003.493, 'text': 'so if you look at this example, i have a user collection here and a post collection here.', 'start': 35998.871, 'duration': 4.622}, {'end': 36012.979, 'text': "in the user collection i have id, name, post as my fields and i'm trying to fetch those from the post collection, which is another collection.", 'start': 36003.493, 'duration': 9.486}], 'summary': 'Dbrefs enable referencing documents across collections and databases.', 'duration': 29.653, 'max_score': 35983.326, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE35983326.jpg'}, {'end': 36117.417, 'src': 'embed', 'start': 36089.117, 'weight': 7, 'content': [{'end': 36095.241, 'text': 'Now, ref field basically holds the name of the collection, whereas where the reference document resides.', 'start': 36089.117, 'duration': 6.124}, {'end': 36097.382, 'text': 'next we have the id field.', 'start': 36095.621, 'duration': 1.761}, {'end': 36102.386, 'text': 'the id field basically contains the value of the id field in the reference document.', 'start': 36097.382, 'duration': 5.004}, {'end': 36110.512, 'text': 'and finally, we have the optional db, which contains the name of the database where the document or the reference document resides.', 'start': 36102.386, 'duration': 8.126}, {'end': 36117.417, 'text': 'so in mongodb, these are the three important fields which should be used in order to implement db refs relationship as follows.', 'start': 36110.512, 'duration': 6.905}], 'summary': 'Ref field holds collection name and reference document location, with the id field containing the value of the id field in the reference document, and the optional db field specifying the database.', 'duration': 28.3, 'max_score': 36089.117, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE36089117.jpg'}, {'end': 36339.863, 'src': 'embed', 'start': 36320.069, 'weight': 8, 'content': [{'end': 36333.14, 'text': 'guys, in this tutorial we have revised the concepts of data relationships in mongodb for the with the likes of manual references used for data modeling in the mongodb and compared it against the concepts of mongodb db refs,', 'start': 36320.069, 'duration': 13.071}, {'end': 36339.863, 'text': 'where the Former is used when the references are to be made to the documents present in the same collection.', 'start': 36333.14, 'duration': 6.723}], 'summary': 'Revised data relationship concepts in mongodb, comparing manual references and db refs.', 'duration': 19.794, 'max_score': 36320.069, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE36320069.jpg'}, {'end': 36442.374, 'src': 'embed', 'start': 36405.844, 'weight': 1, 'content': [{'end': 36408.046, 'text': 'And the functionality is unlikely to go away.', 'start': 36405.844, 'duration': 2.202}, {'end': 36414.109, 'text': 'But hopefully you can see there are good reasons on why to use and how to avoid this function that we have discussed in this.', 'start': 36408.166, 'duration': 5.943}, {'end': 36416.19, 'text': "Well coming to today's topic.", 'start': 36414.429, 'duration': 1.761}, {'end': 36417.17, 'text': "in today's session,", 'start': 36416.19, 'duration': 0.98}, {'end': 36425.855, 'text': 'we look at how to use covered queries and analyze those covered queries and the performance that it creates while you query a MongoDB database.', 'start': 36417.17, 'duration': 8.685}, {'end': 36428.498, 'text': 'So, which helps us to query data more quickly.', 'start': 36426.335, 'duration': 2.163}, {'end': 36431.281, 'text': "So, without any further ado, let's get started.", 'start': 36428.818, 'duration': 2.463}, {'end': 36437.168, 'text': "But before we begin, if you are new to the channel and haven't subscribed already, consider getting subscribed to our channel, Simply Code,", 'start': 36431.641, 'duration': 5.527}, {'end': 36439.47, 'text': 'to stay updated with all the latest tech content.', 'start': 36437.168, 'duration': 2.302}, {'end': 36442.374, 'text': 'And hit that bell icon to never miss an update from us.', 'start': 36439.971, 'duration': 2.403}], 'summary': 'Analyzing covered queries in mongodb for improved performance.', 'duration': 36.53, 'max_score': 36405.844, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE36405844.jpg'}, {'end': 36881.359, 'src': 'embed', 'start': 36857.315, 'weight': 0, 'content': [{'end': 36863.377, 'text': "So let's just find the details or the documents that are present in this collection.", 'start': 36857.315, 'duration': 6.062}, {'end': 36867.178, 'text': "So I'm using the v.employee.find command for that.", 'start': 36863.457, 'duration': 3.721}, {'end': 36873.539, 'text': 'So when you enter, it will display all the records or the documents that are present in this collection.', 'start': 36868.498, 'duration': 5.041}, {'end': 36875.255, 'text': 'right now.', 'start': 36874.614, 'duration': 0.641}, {'end': 36877.036, 'text': 'let us now create a covered query.', 'start': 36875.255, 'duration': 1.781}, {'end': 36881.359, 'text': 'now, creating a covered query is similar to that of how you create an index.', 'start': 36877.036, 'duration': 4.323}], 'summary': 'Using v.employee.find command to display all records in collection, then creating covered query.', 'duration': 24.044, 'max_score': 36857.315, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE36857315.jpg'}, {'end': 37331.351, 'src': 'embed', 'start': 37303.339, 'weight': 3, 'content': [{'end': 37308.142, 'text': 'And after that mentioned the explain keyword, which is the explain command here.', 'start': 37303.339, 'duration': 4.803}, {'end': 37321.339, 'text': 'So there was a bit issue or error in the, uh, you know, copying this code guys.', 'start': 37316.112, 'duration': 5.227}, {'end': 37323.501, 'text': "So I'm just copying paste.", 'start': 37321.379, 'duration': 2.122}, {'end': 37326.545, 'text': 'uh, the query that you have written here, which is a db.temp.', 'start': 37323.501, 'duration': 3.044}, {'end': 37327.666, 'text': 'find first name, Shelly.', 'start': 37326.545, 'duration': 1.121}, {'end': 37331.351, 'text': 'first name, manager ID, department ID and all the indexes that have created on.', 'start': 37327.666, 'duration': 3.685}], 'summary': 'Discussed using the explain command to troubleshoot code issues.', 'duration': 28.012, 'max_score': 37303.339, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE37303339.jpg'}], 'start': 35880.226, 'title': 'Mongodb data relationships, covered queries, and indexing', 'summary': 'Covers mongodb aggregation operations, relationship models, implementation of normalized database structure, use of dbrefs, benefits of covered queries in mongodb, and creating covered queries to improve query performance through indexing, with examples and commands in the mongodb shell.', 'chapters': [{'end': 36405.444, 'start': 35880.226, 'title': 'Mongodb data relationships', 'summary': 'Covers mongodb aggregation operations, relationship models (embedded and referenced), implementation of normalized database structure using reference relationships, the use of dbrefs for referencing documents stored in multiple collections or databases, and the comparison between manual references and mongodb db refs.', 'duration': 525.218, 'highlights': ['Implementation of normalized database structure using reference relationship MongoDB provides two types of relationships, embedded and referenced, with the use of reference relationships for implementing a normalized database structure, allowing the storage of related data in a single document structure or by including links or references from one document to another.', 'Use of DBREFs for referencing documents stored in multiple collections or database DBREFs allow easier referencing of documents stored in multiple collections or databases, providing a standard format and type for representing the data between documents.', 'Comparison between manual references and MongoDB db refs Manual references are used for making references in the same collection, while MongoDB db refs approach is used when making references to documents present in different collections and databases, with the latter being deprecated and not suggested for MongoDB database usage.']}, {'end': 36613.034, 'start': 36405.844, 'title': 'Mongodb covered queries', 'summary': 'Discusses the benefits of using covered queries in mongodb, explaining how they improve query performance by utilizing indexes, reducing the number of documents to be searched, and directly fetching results from an index, leading to faster data retrieval.', 'duration': 207.19, 'highlights': ['Covered queries in MongoDB improve query performance by reducing the number of documents that need to be searched, directly fetching results from an index, and ensuring that all query fields are part of the index, leading to faster data retrieval. reducing the number of documents to be searched, directly fetching results from an index', 'Indexes in MongoDB provide an efficient way of querying data, allowing the database to search through fewer documents to satisfy a query, and covered queries are extremely fast as MongoDB does not have to examine any other documents than the ones that have been indexed. providing an efficient way of querying data, allowing the database to search through fewer documents', 'Covered queries are only used when all the fields in the query are part of the index, the fields returned in the query should be in the same index, and no fields in the query are equal to null for covered queries to be followed, ensuring efficient use of covered queries. efficient use of covered queries']}, {'end': 37037.555, 'start': 36615.899, 'title': 'Mongodb covered queries', 'summary': 'Explains how covered queries work in mongodb by creating indexes on specific fields to improve query performance, demonstrated through examples and commands in the mongodb shell.', 'duration': 421.656, 'highlights': ['Covered queries return results directly from an index, making it more efficient than just indexing Covered queries avoid accessing source documents and directly retrieve results from the index, improving efficiency.', "Creating an index on specific fields like 'manager id' and 'department id' can optimize query performance Creating a covered index on fields like 'manager id' and 'department id' can significantly improve query performance by loading the index into the RAM.", 'Demonstrates the process of creating a covered index and querying data using the MongoDB shell commands The transcript provides a step-by-step demonstration of creating a covered index and querying data using commands in the MongoDB shell, offering a practical understanding of the concept.']}, {'end': 37449.916, 'start': 37038.295, 'title': 'Understanding covered queries and indexing', 'summary': 'Explains how to create covered queries and the importance of analyzing query performance using the explain command, emphasizing the need to exclude certain fields for covered queries and the limitations of covered index for array or embedded documents.', 'duration': 411.621, 'highlights': ['Creating Covered Queries The process of creating a covered query with an index on the first name is explained, emphasizing the significance of including the first name field and the successful creation of the query.', 'Excluding Fields for Covered Queries The necessity of excluding the underscore id field when using covered index is highlighted, along with the requirement to keep the id as zero and the subsequent result of only retrieving specific fields.', "Limitations of Covered Index The limitations of covered index for array or embedded documents are outlined, emphasizing that covered index won't work for fields present in an array field or sub documents.", 'Analyzing Query Performance with Explain Command The significance of using the explain command to analyze query performance and indexing design is explained, highlighting its role in providing information on query indexes, performance, and statistics.']}], 'duration': 1569.69, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE35880226.jpg', 'highlights': ['Covered queries in MongoDB improve query performance by reducing the number of documents that need to be searched, directly fetching results from an index, and ensuring that all query fields are part of the index, leading to faster data retrieval.', "Creating an index on specific fields like 'manager id' and 'department id' can optimize query performance.", 'Demonstrates the process of creating a covered index and querying data using the MongoDB shell commands.', 'Implementation of normalized database structure using reference relationship MongoDB provides two types of relationships, embedded and referenced, with the use of reference relationships for implementing a normalized database structure, allowing the storage of related data in a single document structure or by including links or references from one document to another.', 'Use of DBREFs for referencing documents stored in multiple collections or database DBREFs allow easier referencing of documents stored in multiple collections or databases, providing a standard format and type for representing the data between documents.', 'Covered queries return results directly from an index, making it more efficient than just indexing Covered queries avoid accessing source documents and directly retrieve results from the index, improving efficiency.', 'Creating Covered Queries The process of creating a covered query with an index on the first name is explained, emphasizing the significance of including the first name field and the successful creation of the query.', 'Excluding Fields for Covered Queries The necessity of excluding the underscore id field when using covered index is highlighted, along with the requirement to keep the id as zero and the subsequent result of only retrieving specific fields.', 'Analyzing Query Performance with Explain Command The significance of using the explain command to analyze query performance and indexing design is explained, highlighting its role in providing information on query indexes, performance, and statistics.']}, {'end': 39732.085, 'segs': [{'end': 37498.482, 'src': 'embed', 'start': 37472.907, 'weight': 4, 'content': [{'end': 37486.515, 'text': 'Okay, so this syntax extension to the JavaScript in ReactJS is in the way how you express to bind JS and HTML together to result a JSX content.', 'start': 37472.907, 'duration': 13.608}, {'end': 37493.199, 'text': 'So by using JSX, you can write a structure in the same file that contains the JavaScript code.', 'start': 37487.195, 'duration': 6.004}, {'end': 37498.482, 'text': 'That is something more innovative way because of that ReactJS is creating more buzz in a market.', 'start': 37493.219, 'duration': 5.263}], 'summary': 'Reactjs uses jsx to bind js and html, creating innovative buzz in the market.', 'duration': 25.575, 'max_score': 37472.907, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE37472907.jpg'}, {'end': 37653.82, 'src': 'embed', 'start': 37620.831, 'weight': 5, 'content': [{'end': 37623.532, 'text': 'so these kind of options generate an event.', 'start': 37620.831, 'duration': 2.701}, {'end': 37628.253, 'text': 'so for that we typically say alert and you click on this render.', 'start': 37623.532, 'duration': 4.721}, {'end': 37630.254, 'text': 'you click on this button in a curly braces.', 'start': 37628.253, 'duration': 2.001}, {'end': 37634.175, 'text': 'you call the function to trigger to event.', 'start': 37630.254, 'duration': 3.921}, {'end': 37635.656, 'text': 'now, what are the components in react?', 'start': 37634.175, 'duration': 1.481}, {'end': 37640.376, 'text': 'So friends, react components are nothing but a call view.', 'start': 37637.353, 'duration': 3.023}, {'end': 37645.121, 'text': 'Okay Like a complex view can be divided into the smaller portions.', 'start': 37641.257, 'duration': 3.864}, {'end': 37653.82, 'text': 'complex UI can be distributed further to create more, better and reusable views.', 'start': 37646.199, 'duration': 7.621}], 'summary': 'React components divide complex ui into smaller, reusable views.', 'duration': 32.989, 'max_score': 37620.831, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE37620831.jpg'}, {'end': 38035.216, 'src': 'embed', 'start': 38001.983, 'weight': 0, 'content': [{'end': 38006.544, 'text': 'Probably referencing the web applications is a really good starting point,', 'start': 38001.983, 'duration': 4.561}, {'end': 38011.805, 'text': "because here you can actually talk about maybe some examples that you've done, where you're building out some of these web applications.", 'start': 38006.544, 'duration': 5.261}, {'end': 38019.889, 'text': 'Indeed, one of the things that you want to be consistently doing and peppering your answers with is examples of work that you have done.', 'start': 38012.585, 'duration': 7.304}, {'end': 38026.692, 'text': "Now, it doesn't matter if those examples are purely experimental or training examples that you've done.", 'start': 38020.529, 'duration': 6.163}, {'end': 38035.216, 'text': "The fact that you've actually worked with Node.js and created a distributed system or a web application is really valuable,", 'start': 38026.972, 'duration': 8.244}], 'summary': 'Emphasize examples of web applications built with node.js in interviews.', 'duration': 33.233, 'max_score': 38001.983, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE38001983.jpg'}, {'end': 38885.227, 'src': 'embed', 'start': 38859.443, 'weight': 3, 'content': [{'end': 38867.629, 'text': 'The NPM Packager Manager, with its access to so many different packages, makes it great for getting access to all that content.', 'start': 38859.443, 'duration': 8.186}, {'end': 38875.697, 'text': "Now, a con is working with relational databases with Node.js isn't as easy as a NoSQL database.", 'start': 38868.149, 'duration': 7.548}, {'end': 38879.04, 'text': 'Now, you can do it, and there are ways around that.', 'start': 38875.817, 'duration': 3.223}, {'end': 38885.227, 'text': 'And what I would do when this question comes up is always kind of pivot to say hey,', 'start': 38879.501, 'duration': 5.726}], 'summary': 'Npm packager manager provides access to many packages, but working with relational databases in node.js is not as easy as with nosql databases.', 'duration': 25.784, 'max_score': 38859.443, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE38859443.jpg'}, {'end': 39626.578, 'src': 'embed', 'start': 39598, 'weight': 1, 'content': [{'end': 39603.065, 'text': 'MongoDB has consistently been ranked as one of the top five NoSQL database management systems.', 'start': 39598, 'duration': 5.065}, {'end': 39609.931, 'text': "So if you're someone who's applying for a position in database management roles, you will almost certainly be working with MongoDB at some point.", 'start': 39603.345, 'duration': 6.586}, {'end': 39614.956, 'text': "Now, whether you're upgrading your skills or interviewing for a database management position using MongoDB,", 'start': 39610.311, 'duration': 4.645}, {'end': 39620.957, 'text': "it's a good idea to be familiar with the most frequently asked mongodb interview questions and answers.", 'start': 39615.476, 'duration': 5.481}, {'end': 39626.578, 'text': "in the latter case, it is beneficial for you to prepare for the interview so that you're not caught off guard.", 'start': 39620.957, 'duration': 5.621}], 'summary': 'Mongodb is a top 5 nosql system, important for db roles & interviews.', 'duration': 28.578, 'max_score': 39598, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE39598000.jpg'}], 'start': 37450.216, 'title': 'Node.js interview questions and front-end vs back-end development', 'summary': 'Covers reactjs features and node.js interview questions, emphasizing the importance of practical experience, and explains the difference between front-end and back-end development, the role of node.js, its popularity, and intermediate concepts including event-driven programming, streams, dependencies, and async operations.', 'chapters': [{'end': 37835.741, 'start': 37450.216, 'title': 'Working with reactjs interview questions', 'summary': 'Introduces reactjs features including jsx, virtual dom, react extensions, components, state, higher order component, pure component, and react routing.', 'duration': 385.525, 'highlights': ['JSX is a syntax extension to bind JS and HTML together in ReactJS, making code more understandable and innovative.', 'Virtual DOM in ReactJS represents a DOM in memory and enhances page loading speed by updating only the changed objects.', 'React extensions like Flux and React Native offer state management and hybrid mobile app development, while architectural support and server-side rendering are also available.', 'React components divide complex UI into independent pieces for better and reusable views, similar to Angular.', 'State in React tracks changes due to user or application actions, and the setState function performs a shallow merge between new and previous state.', 'Higher order components in React are designed for reusability, while pure components perform shallow comparison of props and state for equality.', 'React Routing is implemented using inbuilt React modules, where the route path and corresponding component are defined for delivery.']}, {'end': 38083.888, 'start': 37837.179, 'title': 'Node.js interview questions overview', 'summary': 'Provides an overview of node.js interview questions, including the key areas of beginner, intermediate, and advanced questions, and emphasizes the importance of practical experience and examples in demonstrating knowledge and understanding of node.js, particularly in building web applications and distributed systems.', 'duration': 246.709, 'highlights': ['Node.js is one of the most popular open-source cross-platform JavaScript programs, allowing for flexible and rapid web application development, particularly for creating client-side web applications and data-intensive applications that are asynchronous and event-driven. Node.js is highlighted as a popular open-source cross-platform JavaScript program that enables flexible and rapid web application development, particularly for client-side web applications and data-intensive asynchronous and event-driven applications.', 'Node.js is built on the V8 engine, providing high output, non-blocking IO, and a single-threaded event loop, which is essential for understanding how Node.js works. The usage of the V8 engine in Node.js and its characteristics, such as high output, non-blocking IO, and single-threaded event loop, are crucial for understanding the functionality of Node.js.', 'Practical experience and examples of working with Node.js, including building web applications and distributed systems, are emphasized as valuable in demonstrating knowledge and understanding during an interview. The emphasis on practical experience and examples, particularly in building web applications and distributed systems, is highlighted as valuable in demonstrating knowledge and understanding during a Node.js interview.']}, {'end': 38937.368, 'start': 38083.888, 'title': 'Front-end vs back-end development and node.js overview', 'summary': 'Explains the difference between front-end and back-end development, the role of node.js, and its popularity over other backend technologies, emphasizing the significance of npm, key modules, and the pros and cons of using node.js.', 'duration': 853.48, 'highlights': ["Node.js vs Java and PHP Node.js is preferred over Java and PHP due to its speed, NPM's ability to install additional functionality quickly, over 50,000 available bundles, and its ease for real-time data-intensive applications.", 'Angular vs Node.js Angular is a front-end development framework, whereas Node.js is a server-side framework; Angular uses TypeScript, while Node.js is written in C and C++. Both complement each other and have different application focuses.', 'NPM Functionality NPM manages online repositories of modules and packages and provides a command line utility for quick package management; over 50,000 bundles are available for installation.', 'Connecting to Databases with Node.js Mentioned popular databases used with Node.js, including MongoDB and MySQL, highlighting MongoDB for modern solutions and scalability, and Express.js and Mongoose for easy database connections.', 'Pros and Cons of Node.js Node.js is extremely fast at processing an event-based model, but not suitable for heavy computational tasks; it is single-threaded and can be CPU-intensive, but designed for streaming huge amounts of data in and out.']}, {'end': 39316.714, 'start': 38938.57, 'title': 'Node.js intermediate concepts', 'summary': 'Covers intermediate node.js concepts including event-driven programming, event loop, event emitter, api functions, package.json file, url module, and expressjs.', 'duration': 378.144, 'highlights': ['Event-driven programming means that if something happens, something else will happen in response, such as mouse click being an event.', 'An event loop in Node.js involves asynchronous calls and non-blocking input output, enabling the pulling of data back in.', 'Event emitter in Node.js manages classes holding objects within events and executes functions synchronously when an event is thrown.', "The package.json file at the heart of Node.js package holds metadata for the project, including project name, version, and requirements, and it's essential for initializing a Node.js package.", 'The URL module in Node.js allows resolution passing of a URL for utilities and splitting up the web address into a readable format.', 'ExpressJS is a web application framework for building mobile and traditional web solutions within Node.js, with simple installation and usage.']}, {'end': 39732.085, 'start': 39317.867, 'title': 'Node.js streams, dependencies, and async', 'summary': 'Discusses node.js streams, including readable, writable, duplex, and transform streams, updating and deleting dependencies using npm commands, creating a simple server in node.js, explaining synchronous and non-blocking apis, implementing async in node.js, the purpose of module exports, and callback functions in node.js.', 'duration': 414.218, 'highlights': ['Node.js streams include readable, writable, duplex, and transform streams, allowing continuous reading and writing of data within the application. Streams in Node.js consist of readable, writable, duplex, and transform streams, which enable continuous reading and writing of data within the application.', "To update dependencies in Node.js, use the 'npm update all' command to update all dependencies, and to uninstall a specific dependency, such as ExpressJS, use the 'npm uninstall' command. To update dependencies in Node.js, 'npm update all' updates all dependencies, and 'npm uninstall express' uninstalls a specific dependency like ExpressJS.", 'Creating a simple server in Node.js involves using the built-in HTTP service and can be achieved without using ExpressJS, allowing the core functionality of Node.js to be illustrated. Creating a simple server in Node.js involves utilizing the built-in HTTP service, demonstrating the core functionality without requiring ExpressJS.', 'Node.js APIs are asynchronous and non-blocking, enhancing efficiency and scalability by allowing continuous execution. All APIs in Node.js are asynchronous and non-blocking, enhancing efficiency and scalability by enabling continuous execution.', 'Async in Node.js is implemented using the async function to handle asynchronous code, such as making requests and handling responses. Async in Node.js is implemented using the async function to handle asynchronous code, such as making requests and handling responses.', 'Module exports encapsulate code in a single package for sharing with other developers, facilitating collaborative development in a unified environment. Module exports encapsulate code in a single package, enabling sharing with other developers for collaborative development in a unified environment.', 'A callback function in Node.js is triggered after an event and is used for asynchronous operations, enhancing the efficiency of event handling. A callback function in Node.js is triggered after an event and is utilized for asynchronous operations, improving the efficiency of event handling.']}], 'duration': 2281.869, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE37450216.jpg', 'highlights': ['React components divide complex UI into independent pieces for better and reusable views, similar to Angular.', 'Node.js is one of the most popular open-source cross-platform JavaScript programs, allowing for flexible and rapid web application development.', "Node.js vs Java and PHP Node.js is preferred over Java and PHP due to its speed, NPM's ability to install additional functionality quickly, over 50,000 available bundles, and its ease for real-time data-intensive applications.", 'Event-driven programming means that if something happens, something else will happen in response, such as mouse click being an event.', 'Node.js streams include readable, writable, duplex, and transform streams, allowing continuous reading and writing of data within the application.', 'Module exports encapsulate code in a single package for sharing with other developers, facilitating collaborative development in a unified environment.']}, {'end': 42122.675, 'segs': [{'end': 39774.856, 'src': 'embed', 'start': 39751.265, 'weight': 13, 'content': [{'end': 39757.972, 'text': 'mongodb is basically an open source cross platform, no sql document oriented database management system.', 'start': 39751.265, 'duration': 6.707}, {'end': 39767.97, 'text': 'now no sql can be utilized as a substitute for traditional relational databases like SQL and MySQL, which is dependent on the SQL language right?', 'start': 39757.972, 'duration': 9.998}, {'end': 39774.856, 'text': 'So if you want to work with large data sets of distributed data, then NoSQL databases may be quite supportive,', 'start': 39768.231, 'duration': 6.625}], 'summary': 'Mongodb is an open source nosql database for large distributed datasets.', 'duration': 23.591, 'max_score': 39751.265, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE39751265.jpg'}, {'end': 39966.524, 'src': 'embed', 'start': 39935.709, 'weight': 15, 'content': [{'end': 39938.41, 'text': 'These databases store data in a schema less way.', 'start': 39935.709, 'duration': 2.701}, {'end': 39944.713, 'text': 'Example of a key value data store include Cassandra, Redis, DynamoDB and etc.', 'start': 39938.63, 'duration': 6.083}, {'end': 39946.394, 'text': 'Next we have column based.', 'start': 39944.994, 'duration': 1.4}, {'end': 39956.559, 'text': 'Now column based or column store type of database is the one where these databases are designed to store data as columns of data rather than as rows as data.', 'start': 39946.734, 'duration': 9.825}, {'end': 39961.982, 'text': 'If it stores in a row type of data, it becomes a traditional, which is not a NoSQL database, right?', 'start': 39956.979, 'duration': 5.003}, {'end': 39966.524, 'text': 'So again, example of column store databases are HBase.', 'start': 39962.382, 'duration': 4.142}], 'summary': 'Key value data stores like cassandra, redis, and dynamodb, and column store databases like hbase are examples of nosql databases.', 'duration': 30.815, 'max_score': 39935.709, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE39935709.jpg'}, {'end': 40018.69, 'src': 'embed', 'start': 39997.321, 'weight': 12, 'content': [{'end': 40006.543, 'text': 'So the data that is present in this sort of database is interconnected with multiple number of relationship between them in the form of graphs and trees.', 'start': 39997.321, 'duration': 9.222}, {'end': 40012.245, 'text': 'And a popular graph database is Neo4j as well as Big Data.', 'start': 40007.083, 'duration': 5.162}, {'end': 40018.69, 'text': 'So this is what MongoDB is and it comes under the document database type of NoSQL database.', 'start': 40012.525, 'duration': 6.165}], 'summary': 'Data in interconnected database, neo4j and big data are popular, mongodb is a document nosql database.', 'duration': 21.369, 'max_score': 39997.321, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE39997321.jpg'}, {'end': 40357.289, 'src': 'embed', 'start': 40331.499, 'weight': 17, 'content': [{'end': 40336.021, 'text': 'which involves looking through every document in collection for matches to your query.', 'start': 40331.499, 'duration': 4.522}, {'end': 40338.702, 'text': 'It also provides effective indexing strategy.', 'start': 40336.441, 'duration': 2.261}, {'end': 40342.583, 'text': 'Now, any collection in MongoDB can have one or more indexes,', 'start': 40338.762, 'duration': 3.821}, {'end': 40348.546, 'text': 'and those indexes can be made on one or more multiple fields and even throughout a MongoDB database.', 'start': 40342.583, 'duration': 5.963}, {'end': 40354.828, 'text': "So you need a good indexing strategy to quickly and let's say effectively access the data you require from it.", 'start': 40348.646, 'duration': 6.182}, {'end': 40357.289, 'text': 'And it also provides search efficiency.', 'start': 40355.409, 'duration': 1.88}], 'summary': 'Mongodb provides effective indexing strategy for search efficiency.', 'duration': 25.79, 'max_score': 40331.499, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE40331499.jpg'}, {'end': 40814.406, 'src': 'embed', 'start': 40787.913, 'weight': 16, 'content': [{'end': 40795.195, 'text': 'So what you have to do instead, MongoDB has a functionality specifically for storing large files and it goes by the name GridFS.', 'start': 40787.913, 'duration': 7.282}, {'end': 40796.415, 'text': 'Yes, you have heard it right.', 'start': 40795.435, 'duration': 0.98}, {'end': 40805.483, 'text': 'GridFS is a driver specification for uploading and retrieval of MongoDB files which are larger than 16 MB in order to store images,', 'start': 40796.835, 'duration': 8.648}, {'end': 40807.723, 'text': 'videos and other large files.', 'start': 40805.483, 'duration': 2.24}, {'end': 40814.406, 'text': 'It is one of the most popular specifications and it has a size limit of more than 16 MB.', 'start': 40808.104, 'duration': 6.302}], 'summary': 'Gridfs is a mongodb functionality for storing files larger than 16 mb, including images and videos.', 'duration': 26.493, 'max_score': 40787.913, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE40787913.jpg'}, {'end': 41529.363, 'src': 'embed', 'start': 41503.866, 'weight': 1, 'content': [{'end': 41509.688, 'text': 'which is insert a single or even multiple records into a MongoDB collection.', 'start': 41503.866, 'duration': 5.822}, {'end': 41513.87, 'text': 'Again, it returns a document containing each inserted documents ID.', 'start': 41510.108, 'duration': 3.762}, {'end': 41521.656, 'text': 'Well, the next question is what is the difference between all and in operator in MongoDB?', 'start': 41516.291, 'duration': 5.365}, {'end': 41529.363, 'text': 'Now, both all and in operator are used to filter documents in a sub array based on a conditional statement.', 'start': 41522.076, 'duration': 7.287}], 'summary': 'Insert records into mongodb, return ids. compare all and in operator in mongodb for sub array filtering.', 'duration': 25.497, 'max_score': 41503.866, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE41503866.jpg'}, {'end': 41623.907, 'src': 'embed', 'start': 41598.634, 'weight': 3, 'content': [{'end': 41604.74, 'text': 'We cannot write and read both operation when you add more slave to replica set.', 'start': 41598.634, 'duration': 6.106}, {'end': 41611.278, 'text': 'The next question is what is shard key and mention the components of MongoDB sharded cluster.', 'start': 41606.274, 'duration': 5.004}, {'end': 41618.323, 'text': 'Now what is a shard key? Shard key is used by MongoDB to distribute the documents of a collection across shards.', 'start': 41611.858, 'duration': 6.465}, {'end': 41623.907, 'text': 'Now on sharding a MongoDB data set, a shard key is automatically created by default.', 'start': 41619.044, 'duration': 4.863}], 'summary': 'Adding more slaves to replica set impacts write and read operations. shard key distributes collection documents across shards.', 'duration': 25.273, 'max_score': 41598.634, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE41598634.jpg'}, {'end': 41698.716, 'src': 'embed', 'start': 41670.231, 'weight': 0, 'content': [{'end': 41673.592, 'text': 'shard contains a subset of the sharded data.', 'start': 41670.231, 'duration': 3.361}, {'end': 41682.441, 'text': 'okay, a shard is basically a single mongodb server or a replica set that stores a partition of the application data that you have divided.', 'start': 41673.592, 'duration': 8.849}, {'end': 41685.243, 'text': 'Now next we have the Mongos.', 'start': 41683.021, 'duration': 2.222}, {'end': 41688.987, 'text': 'Mongos router or it is a router of operations.', 'start': 41685.744, 'duration': 3.243}, {'end': 41696.254, 'text': 'Now because each shard contains only part of the cluster data, you need something to route operations to the appropriate shards.', 'start': 41689.307, 'duration': 6.947}, {'end': 41698.716, 'text': "That's where Mongos comes in.", 'start': 41696.654, 'duration': 2.062}], 'summary': 'Shard stores subset of sharded data, mongos routes operations to appropriate shards.', 'duration': 28.485, 'max_score': 41670.231, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE41670231.jpg'}, {'end': 42062.094, 'src': 'embed', 'start': 42039.253, 'weight': 10, 'content': [{'end': 42048.241, 'text': 'you know, storing data without any predefined schema makes it a best no SQL database.', 'start': 42039.253, 'duration': 8.988}, {'end': 42057.37, 'text': 'like companies like eBay, Shutterfly, New York Times, Verizon and many other big companies use MongoDB nowadays,', 'start': 42048.241, 'duration': 9.129}, {'end': 42062.094, 'text': 'and also the one of the real-life application or use cases.', 'start': 42057.37, 'duration': 4.724}], 'summary': 'Nosql database mongodb used by ebay, shutterfly, new york times, verizon and other big companies.', 'duration': 22.841, 'max_score': 42039.253, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE42039253.jpg'}], 'start': 39732.365, 'title': 'Mongodb and its features', 'summary': 'Discusses mongodb interview tips, schema, differences with sql, replica sets, gridfs, aggregation, utilities, commands, sharded clusters, features, and applications including its usage by big companies and real-life applications.', 'chapters': [{'end': 40065.748, 'start': 39732.365, 'title': 'Mongodb interview tips', 'summary': 'Discusses mongodb interview tips, including explaining mongodb and its features, alternative nosql databases, types of nosql databases, and how mongodb stores data.', 'duration': 333.383, 'highlights': ['MongoDB is an open source cross-platform NoSQL document-oriented database management system, providing flexibility and scalability for working with large data sets of distributed data, used to store large volumes of data in the form of documents with no fixed schema. Describes MongoDB as an open source NoSQL database providing flexibility and scalability for working with large data sets, with no fixed schema, and ability to store large volumes of data in the form of documents.', 'Apache Cassandra and Redis are alternative NoSQL databases to MongoDB, providing high availability and scalability without compromising performance, and can be used as a cache and message broker. Highlights Apache Cassandra and Redis as alternative NoSQL databases to MongoDB, providing high availability, scalability, and additional functionalities such as caching and message brokering.', 'MongoDB is a document database, designed to store documents with each document having a unique key, and it falls under the category of NoSQL document databases alongside Couchbase. Explains that MongoDB is a document database, designed to store documents with a unique key, and falls under the category of NoSQL document databases, alongside Couchbase.', 'Data in MongoDB is stored in documents or JSON-style data structures, where documents contain one or more fields with specific data types, and records are stored as documents in collections with a shared structure, similar to rows in a relational database. Describes how data is stored in MongoDB, highlighting that it is stored in documents with specific data types, organized into collections with a shared structure, similar to rows in a relational database.']}, {'end': 40605.878, 'start': 40066.109, 'title': 'Mongodb: schema, differences, models, indexing & scaling', 'summary': "Explores mongodb's schema-less nature, differences with sql, data models, indexing, replication, sharding, and scaling, emphasizing its ability to handle high volumes of unstructured data and support high availability and data redundancy.", 'duration': 539.769, 'highlights': ["MongoDB is a schema-less database, creating a schema automatically upon document insertion. MongoDB's schema-less nature automatically creates a schema upon document insertion, unlike SQL which requires a predefined schema for table creation.", 'Differences between MongoDB and SQL include data representation, schema, scalability, transactions, and operations. Key differences include data representation (tables vs. documents and collections), schema (predefined vs. dynamic), scalability (vertical vs. horizontal and vertical), transactions (atomic operations vs. CAP theorem), and operations (e.g., join operations supported in SQL but not in MongoDB).', 'Two data models in MongoDB: embedded data model and referent data model. MongoDB features two data models: embedded data model, capturing relationships within a single document, and referent data model, storing relationships through links or references between documents.', 'Indexing in MongoDB enhances search efficiency by creating indexes on specific fields, eliminating the need for collection scans. Indexing in MongoDB improves search efficiency by creating indexes on specific fields, eliminating the need for collection scans and enabling quick data access.', 'Replication in MongoDB involves duplicating data across multiple servers, ensuring high availability, data redundancy, and data recovery options. Replication in MongoDB duplicates data across servers, ensuring high availability, data redundancy, and data recovery options, thereby protecting and ensuring accessibility of data.', 'Sharding in MongoDB distributes data across multiple databases, enabling the storage of large datasets and high throughput. Sharding in MongoDB distributes data across multiple databases, facilitating the storage of large datasets and high throughput, thereby enhancing data capacity and performance.', 'MongoDB handles horizontal scaling through sharding, while vertical scaling involves adding more resources to a single server. MongoDB achieves horizontal scaling through sharding, distributing data across multiple databases, whereas vertical scaling involves adding resources to a single server to increase capacity.', 'Factors to consider when embedding one document with another include the relationship, retrieval likelihood, simultaneous updates, and update frequency. Consider embedding documents when the relationship is one to few, retrieval is likely to happen together to improve performance, updates are likely to occur simultaneously, and the field is rarely updated.']}, {'end': 40834.158, 'start': 40607.042, 'title': 'Mongodb replica sets & capped collections', 'summary': 'Provides an overview of mongodb replica sets, highlighting the definition, composition, and functionalities of primary and secondary nodes, while also delving into the concept and purpose of capped collections and gridfs for storing large files in mongodb.', 'duration': 227.116, 'highlights': ['A replica set in MongoDB is a group of MongoDB processes that maintains the same data across different servers, requiring at least three nodes with one designated as primary and the rest as secondary, with a maximum limit of 50 nodes. Highlights the definition and composition of a MongoDB replica set, emphasizing the requirement of three nodes and the maximum limit of 50 nodes.', 'Primary nodes in a replica set receive write and read operations, while read operations can be directed to secondary nodes, with only one primary node allowed in a replica set. Explains the functionalities and limitations of primary nodes in a MongoDB replica set, emphasizing their role in receiving write and read operations.', 'Secondary nodes in a replica set maintain a copy of the data, allowing only read operations and serving as secondary nodes again in case of a failed node until a new primary node is replaced. Details the functionalities and resilience of secondary nodes in a MongoDB replica set, highlighting their role in maintaining a copy of the data and their behavior in case of node failure.', 'Capped collections in MongoDB are a special type of collection with either a fixed number of documents or a fixed number of elements, supporting high performance for CRUD operations and preventing the collection from growing beyond the specified maximum size or document count. Describes the characteristics and benefits of capped collections in MongoDB, focusing on their support for high-performance CRUD operations and their limitations to prevent uncontrolled growth.', 'GridFS is a MongoDB driver specification designed for storing and retrieving files larger than 16 MB, such as images and videos, using a chunk-based streaming approach with a chunk size limit of 255 KB. Introduces GridFS as a solution for storing large files in MongoDB, emphasizing its purpose, capabilities, and the chunk-based streaming approach with specified size limits.']}, {'end': 41476.485, 'start': 40834.198, 'title': 'Understanding gridfs, mongodb aggregation, and utilities in mongodb', 'summary': 'Discusses the process of storing large files using gridfs, the aggregation process in mongodb, and utilities for backup and restoring in mongodb. it also covers the role of profiler in mongodb, usage of regular expressions, and searching for documents with specific fields and values.', 'duration': 642.287, 'highlights': ['Understanding GridFS and storing large files GridFS is used to store images, videos, and large files over 16 MB, with the last chunk being equal to or less than 255 KB.', 'MongoDB aggregation process Aggregation in MongoDB acts on a group of values from multiple documents, offering operations such as sum, average, min, max, and push, and can be performed using aggregation pipeline, map reduce, or single purpose aggregation.', 'Utilities for backup and restoring in MongoDB MongoDB provides utilities like MongoImport, MongoExport, MongoDump, and MongoRestore, with MongoDump creating a binary backup and MongoRestore used for restoring data.', 'Role of profiler in MongoDB The profiler collects performance data about operations occurring on a MongoDB instance, allowing the collection of information regarding the executed queries on an individual database instance.', 'Usage of regular expressions in MongoDB Regular expressions are used to match patterns in a document, providing patterns or sequence of characters for matching and defining a search pattern, and can be used to retrieve an unidentified field using a certain pattern.', 'Searching for documents with specific fields and values The $in query operator in MongoDB allows the search for documents with specific fields and values, for example, to retrieve employees with specific titles like product manager or executive director.']}, {'end': 41747.402, 'start': 41479.167, 'title': 'Mongodb commands and sharded cluster', 'summary': "Covers mongodb commands for inserting documents, differences between 'all' and 'in' operators, the impact of adding more slaves to a replica set, and the components of a mongodb sharded cluster.", 'duration': 268.235, 'highlights': ["Difference between 'all' and 'in' operators The 'all' operator retrieves documents containing a subset of the value passed, in any order, while the 'in' operator retrieves documents containing either of the values passed.", 'Adding more slaves to a replica set The statement that both writes and reads become faster when adding more slaves to a replica set is false, as it only accelerates read operations, not write operations.', 'Components of MongoDB sharded cluster A shard key is used to distribute documents across shards, and a sharded cluster consists of shards, Mongos routers to route operations, and config servers to store metadata.', "Inserting single and multiple documents into a collection The commands 'db.collection.insert' and 'insertMany' are used to insert single and multiple documents into a MongoDB collection, returning a document containing the inserted documents' ID field."]}, {'end': 42122.675, 'start': 41749.281, 'title': 'Mongodb features and applications', 'summary': 'Discusses the use of join equivalent in mongodb, the pros and cons of normalizing data, advantages of using mongodb, and applications of mongodb such as in iot, mobile applications, catalog management, content management, and for product management. it also highlights the usage of mongodb by big companies like ebay, shutterfly, new york times, and verizon as well as real-life applications like adharkant in india.', 'duration': 373.394, 'highlights': ['The lookup operator in MongoDB serves as a joint equivalent, but it does not work in sharded collections, and denormalizing data can eliminate the need for a join operation in a MongoDB database. lookup operator as joint equivalent, limitation in sharded collections, denormalizing data eliminates join operation', 'Normalizing data in MongoDB has advantages such as fast updates for normalized data, fast reading for denormalized data, but denormalized data is hard to keep in sync and takes up more space. advantages of normalizing data, speed of updates and reading, challenges of denormalized data', 'Advantages of using MongoDB include being open source, easy to use, highly flexible, providing advanced security features, high availability, reliable indexing, and having a flexible schema design for large-scale applications. advantages of MongoDB, open source, flexibility, security features, high availability, indexing, schema design']}], 'duration': 2390.31, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/ORyi6tTMNqE/pics/ORyi6tTMNqE39732365.jpg', 'highlights': ['MongoDB is an open source NoSQL database providing flexibility and scalability for working with large data sets, with no fixed schema, and ability to store large volumes of data in the form of documents.', 'Apache Cassandra and Redis are alternative NoSQL databases to MongoDB, providing high availability, scalability, and additional functionalities such as caching and message brokering.', 'Differences between MongoDB and SQL include data representation, schema, scalability, transactions, and operations.', 'MongoDB is a schema-less database, creating a schema automatically upon document insertion.', 'Indexing in MongoDB improves search efficiency by creating indexes on specific fields, eliminating the need for collection scans and enabling quick data access.', 'Replication in MongoDB duplicates data across servers, ensuring high availability, data redundancy, and data recovery options, thereby protecting and ensuring accessibility of data.', 'Sharding in MongoDB distributes data across multiple databases, facilitating the storage of large datasets and high throughput, thereby enhancing data capacity and performance.', 'A replica set in MongoDB is a group of MongoDB processes that maintains the same data across different servers, requiring at least three nodes with one designated as primary and the rest as secondary, with a maximum limit of 50 nodes.', 'GridFS is a MongoDB driver specification designed for storing and retrieving files larger than 16 MB, such as images and videos, using a chunk-based streaming approach with a chunk size limit of 255 KB.', 'Aggregation in MongoDB acts on a group of values from multiple documents, offering operations such as sum, average, min, max, and push, and can be performed using aggregation pipeline, map reduce, or single purpose aggregation.', 'MongoDB provides utilities like MongoImport, MongoExport, MongoDump, and MongoRestore, with MongoDump creating a binary backup and MongoRestore used for restoring data.', 'The profiler collects performance data about operations occurring on a MongoDB instance, allowing the collection of information regarding the executed queries on an individual database instance.', 'The $in query operator in MongoDB allows the search for documents with specific fields and values, for example, to retrieve employees with specific titles like product manager or executive director.', "The 'all' operator retrieves documents containing a subset of the value passed, in any order, while the 'in' operator retrieves documents containing either of the values passed.", 'A shard key is used to distribute documents across shards, and a sharded cluster consists of shards, Mongos routers to route operations, and config servers to store metadata.', "The commands 'db.collection.insert' and 'insertMany' are used to insert single and multiple documents into a MongoDB collection, returning a document containing the inserted documents' ID field.", 'lookup operator as joint equivalent, limitation in sharded collections, denormalizing data eliminates join operation', 'advantages of normalizing data, speed of updates and reading, challenges of denormalized data', 'advantages of MongoDB, open source, flexibility, security features, high availability, indexing, schema design']}], 'highlights': ['Mern stack ensures a smooth development process and is becoming increasingly popular in the development market.', "React's rapid growth compared to other frameworks According to Google Trends, React has had a better growth scale compared to Angular and Vue, indicating its strong adoption by front-end developers.", 'Companies using React Facebook, Instagram, Netflix, Dropbox, and WhatsApp are among the companies that use React, showcasing its widespread industry adoption.', 'Node.js chosen by Netflix for application scalability and data intensive application, allowing millions to stream simultaneously.', 'Express framework is a flexible Node.js web application framework used to design single-page, multi-page, and hybrid web applications.', 'NPM serves as a central repository for all packages and modules, allowing online search and installation through a command line utility.', 'MongoDB is crucial for big data, enabling effective content management, mobile and social infrastructure, and easy data management through Mongoose.', 'Frontend development involves HTML, CSS, and JavaScript as fundamental languages.', 'Node.js is used for developing I-O intensive web applications like video streaming sites.', 'The chapter covers the steps to build a RESTful API with Node.js', 'The chapter illustrates how to create a demo using Node.js, Express, and Postman for JWT token generation.', 'MongoDB is designed for building scalable mobile applications and websites, offering high performance and scalability for millions of users.', 'The chapter emphasizes the importance of data modeling in MongoDB, highlighting its role in converting unstructured data into structured, optimized, and efficient storage, ensuring high data quality, and improving database performance.', 'The query for EQ returns all the documents where the payment mode is made through a card instead of cash, resulting in 2 documents returned for customers Rahul and Kirti.', 'MongoDB projection helps to return specific fields from the query or collection, allowing for the selection of necessary data.', 'Creating multiple indexes reduced query execution time from 23ms to 6ms, significantly improving performance.', 'ExpressJS reduces code and time by 5 to 10 times compared to using core modules of Node.js for creating a REST API.', 'Node.js streams include readable, writable, duplex, and transform streams, allowing continuous reading and writing of data within the application.', 'The chapter introduces the three types of indexes in MongoDB: single field index, compound index, and multi-key index.', 'The chapter covers the projection query operator in MongoDB Explains the usage of the projection query operator to project only certain fields from documents.', 'The chapter explains sorting in MongoDB, covering single and multiple field sorting It demonstrates how to sort data based on fields like manager ID and salary, and explains the concept of sorting in ascending and descending order.']}