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 ...

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 ...

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 ...

Here, in this article, you will learn how to this Application Database Design using Spring Data JPA. What Is Spring Data JPA? Spring Data JPA is a framework that abstracts all of the complexity needed ...

This spring-data-graphql-jpa-demo project is intended to provide an easy to understand usage showcase of java-data-graphql together with spring-boot-starter-data-graphql-jpa. The java-data-graphql ...

There are the following entities: Company, Department and Employee. The entities relates to each other as follows: o Company relates to Department as one-to-many o Department relates to Company as ...

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 ...