The JPA EntityManager is the key to Hibernate transaction management. Here's how to bring and commit transactions and persist data to the database for smooth, reliable transactions.

Test-driven software must often drop, create and populate database tables with records before it runs a suite of unit tests. For this reason, the ability to have JPA frameworks -- such as EclipseLink ...

Databases have no notion of inheritance between entities, so JPA providers like Hibernate must provide special features for defining object-oriented inheritance relationships in the database.