The Jakarta Persistence API (JPA) is a Java specification that bridges the gap between relational databases and object-oriented programming. This two-part tutorial introduces JPA and explains how Java ...

Community driven content discussing all aspects of software development from DevOps to design patterns. MySQL remains one of the most popular, open-source databases in the Java community, while ...

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 ...

Every JPA entity has a primary key, but some entities have more than one value as their primary key. In this case, you need to use a composite key. This Java tip introduces you to using composite keys ...