In this chapter, we understood the overview of database and covered the DAO design pattern. We looked at JDBC without the Spring Framework and the simplified Spring JDBC abstraction framework. We implemented the JDBC code using the Spring JDBC support. We discussed how Spring manages the DataSource and which data sources can be used in our applications. We also discussed the data support in the Spring application. We looked at the JDBC batch operation in Spring and calling the stored procedure by using SimpleJdbcCall.

In the next chapter, you will learn about ORM and understand the concept of Hibernate. Then, we will discuss the important elements of the Hibernate architecture. We will also learn how to use HQL and HCQL to query the persistent object.