5)Hibernate is one of the most famous Java Framework written by Red Hat community.If you want to design a project that links or communicates with any database without changing the project source code you have to use Hibernate.

If you are developing a web application then you are definitely using a database it may be Oracle, Mysql or any other for instant let us assume you are using Mysql for your application. In future if you want to change the database what you have to do, you have to change your code according to your new database.

To override this problem Hibernate is using if you are planning to change the database of your project, if you don't want to change your code with respect to that database. at that time you have to use Hibernate Framework.

Hibernate Framework provides alternative query language independent to database.that means if you are designing your project and want to connect it with a database use Hibernate provided query language to connect your project with a database. Check your project with any one database after that change the database and check your project once more it works perfectly