In the previous chapter, we learned how to access a database in our application using JDBC. We learned how to optimally design our database, transaction management, and connection pooling, to get the best performance from our application. We also learned how to prevent SQL injection by using a prepared statement in JDBC. We saw how we can remove traditional boilerplate code for managing transactions, exceptions, and commits by using JDBC templates.

In this chapter, we will move toward some advanced ways of accessing the database using object-relational mapping (ORM) frameworks, such as Hibernate. We will learn how we can improve database access in an optimal way by using ORM. With Spring Data, we can further remove the boilerplate code of implementing the Data Access Object (DAO) interface.

The following are the topics we will go through...