JDBC abstraction and DAO module

Question

Illustrate JDBC abstraction and DAO module?

Answer 1

Using DAO module you can keep up a database code simple and clean, and prevent problems which result from a failure to close database resources. A new layer of important exceptions on the top of error messages given by many database servers is bought in DAO module. In addition, DAO module uses Spring’s AOP module to provide transaction management services for the objects in a Spring application.