title
#13 Hibernate Tutorial | Mapping Relations Practical

description
Hibernate is ORM i.e. Object relational mapping tool. Hibernate mapping relations are: @Many-to-One @One-to-One @One-toMany @Many-to-Many Trainer: Navin Reddy Github :- https://github.com/navinreddy20/Hibernate-Tutorial-for-Beginners Check out our website: http://www.telusko.com Follow Telusko on Twitter: https://twitter.com/navinreddy20 Follow on Facebook: Telusko : https://www.facebook.com/teluskolearnings Navin Reddy : https://www.facebook.com/navintelusko Follow Navin Reddy on Instagram: https://www.instagram.com/navinreddy20 Subscribe to our other channel: Navin Reddy : https://www.youtube.com/channel/UCxmkk8bMSOF-UBF43z-pdGQ?sub_confirmation=1 Telusko Hindi : https://www.youtube.com/channel/UCitzw4ROeTVGRRLnCPws-cw?sub_confirmation=1 Subscribe to the channel and learn Programming in easy way. Java Tutorial for Beginners : https://goo.gl/p10QfB Scala Tutorials for Java Developers : https://goo.gl/8H1aE5 C Tutorial Playlist : https://goo.gl/8v92pu Android Tutorial for Beginners Playlist : https://goo.gl/MzlIUJ XML Tutorial : https://goo.gl/Eo79do Design Patterns in Java : https://goo.gl/Kd2MWE Socket Programming in Java : https://goo.gl/jlMEbg Spring MVC Tutorial : https://goo.gl/9ubbG2 OpenShift Tutorial for Beginners : https://goo.gl/s58BQH Spring Framework with Maven : https://goo.gl/MaEluO Sql Tutorial for Beginners : https://goo.gl/x3PrTg String Handling in Java : https://goo.gl/zUdPwa Array in Java : https://goo.gl/uXTaUy Java Servlet : https://goo.gl/R5nHp8 Exception Handling in Java : https://goo.gl/N4NbAW

detail
{'title': '#13 Hibernate Tutorial | Mapping Relations Practical', 'heatmap': [{'end': 263.353, 'start': 232.585, 'weight': 0.703}, {'end': 284.163, 'start': 267.616, 'weight': 0.722}, {'end': 377.206, 'start': 364.861, 'weight': 0.708}, {'end': 629.339, 'start': 595.282, 'weight': 0.775}, {'end': 676.888, 'start': 652.58, 'weight': 0.725}], 'summary': 'Tutorial covers practical implementation of hypernet relations and java object relationships, including creating classes for laptop and student, their annotation, and storage in a database resulting in successful data retrieval. it also discusses modifying methods to handle a list of laptops, resolving potential errors, and challenges of deleting database tables and mapping in sql, with a focus on one-to-many, many-to-one, and many-to-many relationships.', 'chapters': [{'end': 335.302, 'segs': [{'end': 63.155, 'src': 'embed', 'start': 17.331, 'weight': 1, 'content': [{'end': 23.835, 'text': 'in laptop I have a ID as LID and then we have a name and for this we have getter and setter.', 'start': 17.331, 'duration': 6.504}, {'end': 25.216, 'text': 'then we have student.', 'start': 23.835, 'duration': 1.381}, {'end': 27.818, 'text': 'where you have, you can see, we have okay.', 'start': 25.216, 'duration': 2.602}, {'end': 34.373, 'text': 'So we have this student class here and then in our app class.', 'start': 29.909, 'duration': 4.464}, {'end': 42.179, 'text': 'what we have done is we have created this laptop object and this student object and I want to store both the objects into database.', 'start': 34.373, 'duration': 7.806}, {'end': 50.866, 'text': 'And of course, you have to make sure that you have annotated both the classes here, which is student and laptop, and then you can simply add,', 'start': 43.12, 'duration': 7.746}, {'end': 52.808, 'text': 'you can simply save the value to database.', 'start': 50.866, 'duration': 1.942}, {'end': 56.031, 'text': 'You can see we have saved laptop and saved the student.', 'start': 52.828, 'duration': 3.203}, {'end': 62.075, 'text': 'Now what something, everything is perfect here.', 'start': 57.574, 'duration': 4.501}, {'end': 63.155, 'text': "Let's run this.", 'start': 62.495, 'duration': 0.66}], 'summary': 'Creating and storing laptop and student objects in database.', 'duration': 45.824, 'max_score': 17.331, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/8mUPvdDGoLQ/pics/8mUPvdDGoLQ17331.jpg'}, {'end': 112.3, 'src': 'embed', 'start': 87.22, 'weight': 0, 'content': [{'end': 95.703, 'text': 'so I have this neon as my database and you can see we have two tables here, which is student, and okay, let me just show tables.', 'start': 87.22, 'duration': 8.483}, {'end': 99.81, 'text': 'do have two tables here laptop and student.', 'start': 96.807, 'duration': 3.003}, {'end': 105.655, 'text': "and if i say select star from student, we'll be getting the details for the student which is 150, navin.", 'start': 99.81, 'duration': 5.845}, {'end': 109.978, 'text': 'and if i say laptop, you can see we got 101 and del.', 'start': 105.655, 'duration': 4.323}, {'end': 112.3, 'text': "again. why i'm going for student and laptop?", 'start': 109.978, 'duration': 2.322}], 'summary': 'Database contains 2 tables: student (150 records) and laptop (101 records).', 'duration': 25.08, 'max_score': 87.22, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/8mUPvdDGoLQ/pics/8mUPvdDGoLQ87220.jpg'}, {'end': 160.182, 'src': 'embed', 'start': 133.455, 'weight': 5, 'content': [{'end': 138.681, 'text': "Let's create object of laptop here and we'll name it laptop as laptop thing.", 'start': 133.455, 'duration': 5.226}, {'end': 142.485, 'text': 'and then for this property we have to use getter and setter, of course.', 'start': 138.681, 'duration': 3.804}, {'end': 150.296, 'text': "so we have to say right, like we'll say source, which is here, and we'll select getters and setters.", 'start': 142.485, 'duration': 7.811}, {'end': 156.484, 'text': "so we'll select this part and we'll click on ok, ok, so you can see, we got getter setter for laptop as well.", 'start': 150.296, 'duration': 6.188}, {'end': 160.182, 'text': 'now. so student class has a property which is laptop.', 'start': 157.56, 'duration': 2.622}], 'summary': 'Creating a laptop object with getter and setter for a student class.', 'duration': 26.727, 'max_score': 133.455, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/8mUPvdDGoLQ/pics/8mUPvdDGoLQ133455.jpg'}, {'end': 265.934, 'src': 'heatmap', 'start': 232.585, 'weight': 3, 'content': [{'end': 238.928, 'text': 'so whenever you create object inside student, you have to specify what is the relationship between this laptop and a student.', 'start': 232.585, 'duration': 6.343}, {'end': 245.992, 'text': 'for that you have to use an annotation which is called as one, two, one, because one student will have one laptop.', 'start': 238.928, 'duration': 7.064}, {'end': 246.773, 'text': "now let's try.", 'start': 245.992, 'duration': 0.781}, {'end': 250.635, 'text': 'if you run this code, you can see it worked.', 'start': 246.773, 'duration': 3.862}, {'end': 252.156, 'text': 'so one student will have one laptop.', 'start': 250.635, 'duration': 1.521}, {'end': 253.797, 'text': 'that is your one, two.', 'start': 252.156, 'duration': 1.641}, {'end': 259.149, 'text': "so that's your one-to-one relationship.", 'start': 255.367, 'duration': 3.782}, {'end': 263.353, 'text': 'now if I say show tables, you can see we got laptop and student.', 'start': 259.149, 'duration': 4.204}, {'end': 265.234, 'text': 'this is our old tables.', 'start': 263.353, 'duration': 1.881}, {'end': 265.934, 'text': "let's ignore that.", 'start': 265.234, 'duration': 0.7}], 'summary': 'Creating a one-to-one relationship between a student and a laptop object. when running the code, it successfully establishes this relationship.', 'duration': 27.006, 'max_score': 232.585, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/8mUPvdDGoLQ/pics/8mUPvdDGoLQ232585.jpg'}, {'end': 292.628, 'src': 'heatmap', 'start': 267.616, 'weight': 0.722, 'content': [{'end': 274.24, 'text': "and if I say select star from laptop, it will be only laptop entry, because laptop don't know about the student, but student knows about the table.", 'start': 267.616, 'duration': 6.624}, {'end': 275.341, 'text': 'student knows about the laptop.', 'start': 274.24, 'duration': 1.101}, {'end': 279.244, 'text': 'right, because in student class we have updated with the laptop object.', 'start': 275.341, 'duration': 3.903}, {'end': 284.163, 'text': "that's one-to-one, but let's see how to implement one to many here.", 'start': 279.244, 'duration': 4.919}, {'end': 285.083, 'text': 'now, for one to many.', 'start': 284.163, 'duration': 0.92}, {'end': 288.125, 'text': "what you have to do is, let's say, one student has many laptop.", 'start': 285.083, 'duration': 3.042}, {'end': 289.846, 'text': 'so of course you cannot use normal laptop.', 'start': 288.125, 'duration': 1.721}, {'end': 292.628, 'text': 'here we have to say list of laptops.', 'start': 289.846, 'duration': 2.782}], 'summary': 'Explaining one-to-many relationship: one student has many laptops.', 'duration': 25.012, 'max_score': 267.616, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/8mUPvdDGoLQ/pics/8mUPvdDGoLQ267616.jpg'}, {'end': 335.302, 'src': 'embed', 'start': 310.433, 'weight': 6, 'content': [{'end': 317.656, 'text': "okay. so since I'm using, I have set my project to 1.6 and that's why it is not supporting this diamond.", 'start': 310.433, 'duration': 7.223}, {'end': 322.898, 'text': 'here you have to specify that this feature of not mentioning was introduced in 1.7.', 'start': 317.656, 'duration': 5.242}, {'end': 325.979, 'text': 'so of course you have to mention here, because my JDK has set to 1.6.', 'start': 322.898, 'duration': 3.081}, {'end': 331.1, 'text': 'okay, so instead of using 1 to 1, I should be using 1 to many.', 'start': 325.979, 'duration': 5.121}, {'end': 334.702, 'text': 'now, right, and for this you have to input the package.', 'start': 331.1, 'duration': 3.602}, {'end': 335.302, 'text': "let's do that.", 'start': 334.702, 'duration': 0.6}], 'summary': 'Using jdk 1.6, need to specify features introduced in 1.7 and use 1 to many instead of 1 to 1.', 'duration': 24.869, 'max_score': 310.433, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/8mUPvdDGoLQ/pics/8mUPvdDGoLQ310433.jpg'}], 'start': 0.819, 'title': 'Practical implementation of hypernet relations and java object relationships in java', 'summary': 'Covers the practical implementation of hypernet relations, creating classes for laptop and student, their annotation, and storage in a database resulting in successful data retrieval. it also discusses implementing one-to-one and one-to-many relationships between classes in java, using annotations and code examples, covering object properties, getters and setters, and specifying relationships, such as one student having one or many laptops, and jdk version compatibility.', 'chapters': [{'end': 112.3, 'start': 0.819, 'title': 'Hypernet relations in practical', 'summary': 'Discusses the practical implementation of hypernet relations, demonstrating the creation of classes for laptop and student, their annotation, and storage in a database, resulting in the creation of corresponding tables and successful data retrieval.', 'duration': 111.481, 'highlights': ['The chapter demonstrates the creation of classes for laptop and student, including the definition of attributes, getters, and setters.', 'It illustrates the annotation of the classes and the process of storing objects into a database, resulting in the creation of corresponding tables for laptop and student.', 'The successful retrieval of data from the database is shown, with specific examples of data from the student and laptop tables.']}, {'end': 335.302, 'start': 112.3, 'title': 'Java object relationships', 'summary': 'Discusses implementing one-to-one and one-to-many relationships between classes in java, using annotations and code examples. it covers creating object properties, using getters and setters, and specifying relationships, such as one student having one laptop or one student having many laptops. it also touches on jdk version compatibility.', 'duration': 223.002, 'highlights': ['The chapter covers implementing one-to-one and one-to-many relationships between classes in Java, using annotations and code examples.', 'It discusses creating object properties, using getters and setters, and specifying relationships, such as one student having one laptop or one student having many laptops.', 'It mentions the need to use annotations like @OneToOne and @OneToMany to specify the relationship between objects, such as one student having one laptop.', 'The chapter also touches on JDK version compatibility, mentioning the need to specify features introduced in 1.7 when using JDK 1.6.']}], 'duration': 334.483, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/8mUPvdDGoLQ/pics/8mUPvdDGoLQ819.jpg', 'highlights': ['The successful retrieval of data from the database is shown, with specific examples of data from the student and laptop tables.', 'It illustrates the annotation of the classes and the process of storing objects into a database, resulting in the creation of corresponding tables for laptop and student.', 'The chapter demonstrates the creation of classes for laptop and student, including the definition of attributes, getters, and setters.', 'The chapter covers implementing one-to-one and one-to-many relationships between classes in Java, using annotations and code examples.', 'It mentions the need to use annotations like @OneToOne and @OneToMany to specify the relationship between objects, such as one student having one laptop.', 'It discusses creating object properties, using getters and setters, and specifying relationships, such as one student having one laptop or one student having many laptops.', 'The chapter also touches on JDK version compatibility, mentioning the need to specify features introduced in 1.7 when using JDK 1.6.']}, {'end': 931.408, 'segs': [{'end': 394.386, 'src': 'heatmap', 'start': 364.861, 'weight': 0, 'content': [{'end': 368.102, 'text': 'so you have to add this into a list.', 'start': 364.861, 'duration': 3.241}, {'end': 369.503, 'text': 'so the the changes.', 'start': 368.102, 'duration': 1.401}, {'end': 377.206, 'text': 'what we have done is in the student class, we have mentioned about one too many and we have created the list of laptops, not one laptop.', 'start': 369.503, 'duration': 7.703}, {'end': 383.849, 'text': 'we have list of laptops and in this app what you are doing is you are saying get laptop, which will give you the error list, and then you can say add,', 'start': 377.206, 'duration': 6.643}, {'end': 386.09, 'text': 'i hope it will work.', 'start': 383.849, 'duration': 2.241}, {'end': 386.93, 'text': 'uh, it will.', 'start': 386.09, 'duration': 0.84}, {'end': 394.386, 'text': 'uh, if i run this code okay, you can see, we got an error is because it is not able to delete the table.', 'start': 386.93, 'duration': 7.456}], 'summary': 'In the student class, a list of laptops was created, causing an error while attempting to delete the table.', 'duration': 29.525, 'max_score': 364.861, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/8mUPvdDGoLQ/pics/8mUPvdDGoLQ364861.jpg'}, {'end': 552.071, 'src': 'embed', 'start': 527.348, 'weight': 2, 'content': [{'end': 535.876, 'text': 'ok, we got our student there, but this student should know what mapping we are doing so far, for one student we have multiple laptops, right.', 'start': 527.348, 'duration': 8.528}, {'end': 538.578, 'text': 'so in student we have student has multiple laptops.', 'start': 535.876, 'duration': 2.702}, {'end': 541.181, 'text': "that's why it is one too many, because one student will have multiple laptops.", 'start': 538.578, 'duration': 2.603}, {'end': 546.168, 'text': 'in case of laptop it is multiple laptop belong to one student.', 'start': 542.185, 'duration': 3.983}, {'end': 552.071, 'text': 'so we have to use many to many to one.', 'start': 546.168, 'duration': 5.903}], 'summary': 'The student has multiple laptops, necessitating a many-to-many-to-one relationship.', 'duration': 24.723, 'max_score': 527.348, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/8mUPvdDGoLQ/pics/8mUPvdDGoLQ527348.jpg'}, {'end': 629.339, 'src': 'heatmap', 'start': 595.282, 'weight': 0.775, 'content': [{'end': 599.825, 'text': 'but when you have this entry in the laptop table, why you need a mapping table?', 'start': 595.282, 'duration': 4.543}, {'end': 602.307, 'text': 'again the same problem.', 'start': 601.007, 'duration': 1.3}, {'end': 605.588, 'text': 'laptop thinks that he is responsible to map.', 'start': 602.307, 'duration': 3.281}, {'end': 608.229, 'text': 'student thinks that he is responsible to map.', 'start': 605.588, 'duration': 2.641}, {'end': 609.069, 'text': 'we have to mention.', 'start': 608.229, 'duration': 0.84}, {'end': 610.13, 'text': 'we have to mention here.', 'start': 609.069, 'duration': 1.061}, {'end': 618.832, 'text': "hey, student, you don't have to map it because this will be mapped by, and then you have to mention that it is mapped by this variable here,", 'start': 610.13, 'duration': 8.702}, {'end': 619.593, 'text': 'which is student.', 'start': 618.832, 'duration': 0.761}, {'end': 620.293, 'text': "so you don't have to do it.", 'start': 619.593, 'duration': 0.7}, {'end': 622.634, 'text': 'I will simply specify student.', 'start': 621.013, 'duration': 1.621}, {'end': 625.816, 'text': 'so this time your student class will not map it.', 'start': 622.634, 'duration': 3.182}, {'end': 629.339, 'text': 'but again, before running this, I have to drop all the tables.', 'start': 625.816, 'duration': 3.523}], 'summary': 'Challenges with mapping responsibilities between laptop and student classes, aiming to clarify and resolve the issue.', 'duration': 34.057, 'max_score': 595.282, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/8mUPvdDGoLQ/pics/8mUPvdDGoLQ595282.jpg'}, {'end': 681.609, 'src': 'heatmap', 'start': 652.58, 'weight': 0.725, 'content': [{'end': 655.561, 'text': "let's run this thing now once again.", 'start': 652.58, 'duration': 2.981}, {'end': 660.724, 'text': 'and can you see that this time we are not getting a new table?', 'start': 655.561, 'duration': 5.163}, {'end': 665.847, 'text': "it's because the mapping is done by laptop, so shouldn't have don't have to care about that, right.", 'start': 660.724, 'duration': 5.123}, {'end': 668.108, 'text': "so that's how we use many to one.", 'start': 665.847, 'duration': 2.261}, {'end': 669.949, 'text': "so that's one to many, many to one.", 'start': 668.108, 'duration': 1.841}, {'end': 671.927, 'text': 'Now the last part.', 'start': 670.987, 'duration': 0.94}, {'end': 676.888, 'text': "let's say this laptop has list of students here, so we don't have one student.", 'start': 671.927, 'duration': 4.961}, {'end': 681.609, 'text': "we have, I mean we don't have one student, so multiple students will use multiple laptops, like you know.", 'start': 676.888, 'duration': 4.721}], 'summary': 'Demonstrating many-to-one and one-to-many relationships in database mapping.', 'duration': 29.029, 'max_score': 652.58, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/8mUPvdDGoLQ/pics/8mUPvdDGoLQ652580.jpg'}, {'end': 931.408, 'src': 'embed', 'start': 905.04, 'weight': 1, 'content': [{'end': 907.362, 'text': "let's find the query for laptop.", 'start': 905.04, 'duration': 2.322}, {'end': 908.843, 'text': 'we got laptop entry.', 'start': 907.362, 'duration': 1.481}, {'end': 909.864, 'text': 'find the query for student.', 'start': 908.843, 'duration': 1.021}, {'end': 913.567, 'text': 'we got student entry and if I say laptop student, we got the mapping as well.', 'start': 909.864, 'duration': 3.703}, {'end': 917.711, 'text': 'again, one laptop can have multiple students and multiple laptop can have one student.', 'start': 913.567, 'duration': 4.144}, {'end': 919.138, 'text': "That's how it works.", 'start': 918.578, 'duration': 0.56}, {'end': 923.602, 'text': 'Right So that is one to one, one to many, many to one and many to many.', 'start': 919.759, 'duration': 3.843}, {'end': 925.663, 'text': 'So if you have any questions, let me know in the comment section.', 'start': 923.682, 'duration': 1.981}, {'end': 927.084, 'text': "And that's it.", 'start': 926.184, 'duration': 0.9}, {'end': 928.185, 'text': 'I hope you like this video.', 'start': 927.184, 'duration': 1.001}, {'end': 931.408, 'text': 'Click on the like button and do subscribe for further videos.', 'start': 928.205, 'duration': 3.203}], 'summary': 'Demonstrates database query results for laptop and student entries, illustrating one-to-one, one-to-many, many-to-one, and many-to-many relationships.', 'duration': 26.368, 'max_score': 905.04, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/8mUPvdDGoLQ/pics/8mUPvdDGoLQ905040.jpg'}], 'start': 336.673, 'title': 'Modifying methods and sql table operations', 'summary': 'Discusses modifying get and set methods to handle a list of laptops, improving functionality and potential error resolution in the app, as well as the challenges of deleting database tables and mapping in sql, with a focus on one-to-many, many-to-one, and many-to-many relationships, illustrated with examples and practical sql commands.', 'chapters': [{'end': 386.93, 'start': 336.673, 'title': 'Changing get and set methods for list of laptops', 'summary': 'Discusses changing the get and set methods to return and add a list of laptops instead of one, resulting in improved functionality and potential error resolution in the app.', 'duration': 50.257, 'highlights': ['The chapter emphasizes changing the get and set methods to handle a list of laptops instead of one, improving functionality and error handling in the app.', "Mentioning 'list of laptops' and 'add' method in the set function enhances the understanding of the changes made in the code.", "The student class now handles one too many by creating a list of laptops, leading to potential improvements in the app's functionality and error management."]}, {'end': 931.408, 'start': 386.93, 'title': 'Database table deletion and mapping in sql', 'summary': 'Discusses the challenges of deleting tables due to dependencies, and the process of mapping tables in sql, including the concepts of one-to-many, many-to-one, and many-to-many relationships, illustrated with examples and practical sql commands.', 'duration': 544.478, 'highlights': ["The problem arises when trying to delete a table due to dependencies, such as the inability to delete the laptop table because the student table has a primary key of laptop, resulting in the need to delete the tables in a specific order to create a new table. Inability to delete the laptop table due to the student table's primary key of laptop, highlighting the dependency issue and the need to delete tables in a specific order.", "Demonstrating the creation of a mapping table 'student laptop' to handle the relationship between students and laptops, and executing SQL queries to retrieve and display the mapped data, showcasing the concept of one-to-many relationship in SQL. Creation of a mapping table 'student laptop' to handle the relationship between students and laptops, and the execution of SQL queries to retrieve and display the mapped data, showcasing the concept of one-to-many relationship in SQL.", 'Explaining the concept of many-to-one relationship in SQL, emphasizing the mapping of multiple laptops to one student and the execution of SQL commands to illustrate the relationship within the laptop table. Explanation of many-to-one relationship, emphasizing the mapping of multiple laptops to one student and the execution of SQL commands to illustrate the relationship within the laptop table.', 'Introducing the concept of many-to-many relationship in SQL, demonstrating the process of mapping multiple students to multiple laptops using practical SQL commands and illustrating the relationship between the tables. Introduction of many-to-many relationship, demonstrating the process of mapping multiple students to multiple laptops using practical SQL commands and illustrating the relationship between the tables.']}], 'duration': 594.735, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/8mUPvdDGoLQ/pics/8mUPvdDGoLQ336673.jpg', 'highlights': ['Changing get and set methods to handle a list of laptops improves app functionality and error handling.', "Creation of a mapping table 'student laptop' showcases the concept of one-to-many relationship in SQL.", 'Demonstration of many-to-many relationship in SQL illustrates the process of mapping multiple students to multiple laptops.']}], 'highlights': ['The successful retrieval of data from the database is shown, with specific examples of data from the student and laptop tables.', 'It illustrates the annotation of the classes and the process of storing objects into a database, resulting in the creation of corresponding tables for laptop and student.', 'The chapter demonstrates the creation of classes for laptop and student, including the definition of attributes, getters, and setters.', 'The chapter covers implementing one-to-one and one-to-many relationships between classes in Java, using annotations and code examples.', 'It mentions the need to use annotations like @OneToOne and @OneToMany to specify the relationship between objects, such as one student having one laptop.', 'It discusses creating object properties, using getters and setters, and specifying relationships, such as one student having one laptop or one student having many laptops.', 'The chapter also touches on JDK version compatibility, mentioning the need to specify features introduced in 1.7 when using JDK 1.6.', 'Changing get and set methods to handle a list of laptops improves app functionality and error handling.', "Creation of a mapping table 'student laptop' showcases the concept of one-to-many relationship in SQL.", 'Demonstration of many-to-many relationship in SQL illustrates the process of mapping multiple students to multiple laptops.']}