JDBC for encapsulating MySQL

Yes, that's what I copied from my OneNote, and it turned into a good long picture. What can I do, I am also very desperate, interested in a good look at it.

Now the development project basically the persistence layer is uses the frame (hibernate or mybatis), therefore, this thing basically does not have, since has the great God encapsulation very good, why should we write by ourselves. But

This can help us understand JDBC very well. The use of other people's framework is often better and quicker to understand.

JDBC for encapsulating MySQL