JDBC stands for Java Database Connectivity. Connectivity was previously used to connect a database to a Java project. However, it produced numerous issues and necessitated several lines of coding to establish communication, which was time-consuming and used to use memory space and considerably slowed down processing time. This issue gave rise to ORM or Object Relational Mapping. To learn more about Hibernate ORM, join the Hibernate Training institute in Chennai at FITA Academy, which will provide you with a diverse skill set as well as the best Placement Training.
ORM significantly helped developers by linking object-oriented programs with databases quickly and straightforwardly. A few lines of code were insufficient to establish communication. Several ORM frameworks or Java tools are available to enable this ORM capability in Java, and Hibernate ORM is the most popular and complete offering of an all-around solution.
In this blog post, we’ll go through What is Hibernate ORM and How Does it Work.
What Does Hibernate ORM Do?
Hibernate ORM’s primary role is to link Java classes to databases and Java data types to SQL data types. It can also be used to write database queries and get result sets. Hibernate ORM resolves the classic object and relational impedance mismatch problem. The problem arose because an object in an object-oriented application follows object-oriented programming principles, whereas an object in the background database follows database normalisation, resulting in a mismatch.
Hibernate, and other ORMs use mapping concepts to determine which Java object of a class will store data in which database table. Hibernate has a query language influenced by SQL and is known as object-oriented SQL.
Advantages Of Hibernate ORM
Hibernate ORM solves the mismatch problem by connecting object-oriented classes to relational databases via an XML mapping file and gives you complete control over both the Java programme and the database design.
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Persistence
Hibernate ORM has the property of transparent persistence, which means that the connection between objects and database tables is formed automatically. In other words, developers no longer need to write the lines of code they did in JDFC to build the link. As a result, development time, support, and maintenance are drastically reduced.
Independence
Hibernate Query Language can be written without regard for the name of the database. Hibernate ORM can connect to all popular databases such as MySQL, Oracle, FB2, etc. This independence is achieved by altering a database configuration file setting called database dialect.
Caching
One of the most notable features of Hibernate ORM is its caching mechanism. Because of the two-level caching approach, the application’s performance is robust and becomes scalable to manage heavy demands. The first level cache contains session objects, while the second cache contains SessionFactory objects.
Multiple Transactions
Hibernate ORM has a locking mechanism because of the version property feature, which allows an application to have multiple transactions without compromising application performance. There is no conflict when many transactions attempt to access the same database simultaneously. The optimistic locking mechanism prioritises the user who makes the initial change. Other transactions in the queue will receive an error message and be required to restart the procedure.
Applications
Hibernate ORM is a robust and adaptable framework that allows developers to create simple to complex applications while handling large loads easily. It is employed in Java and Java EE applications. Servlets, JBI services, and EJB session beans access it. Hibernate ORM can be used in other object-oriented programming languages as well.
Conclusion
Hopefully, you enjoyed this blog and now understand everything about the Hibernate ORM, including What is Hibernate ORM and How Does it Work. You can gain more expertise and ability in designing dynamic and interactive web applications by studying Spring Hibernate Training in Chennai at FITA Academy.
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