![]() ![]() Entities typically have relationships with other entities, and these relationships are expressed through object/relational mapping (ORM) metadata. Instances of such an entity correspond to individual rows in the table. Entities Ī persistence entity is a lightweight Java class with its state typically persisted to a table in a relational database. The JPA 3.1 specification, the latest version, was released in the spring of 2022 as part of Jakarta EE 10. The JPA 2.2 specification was released in the summer of 2017. The JPA 2.1 specification was released 22 April 2013 (the Java EE 7 platform requires JPA 2.1 ). The JPA 2.0 specification was released 10 December 2009 (the Java EE 6 platform requires JPA 2.0 ). The final release date of the JPA 1.0 specification was as part of Java Community Process JSR 220. The reference implementation for JPA is EclipseLink.
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