By Mike Keith

41,541 Downloads · Refcard 22 of 185 (see them all)

Java Persistence API (JPA), the Java programming language framework, is the standard for mapping Java objects to a relational database using Java SE and EE. This DZone Refcard will give users enough to understand the basics of JPA and get started writing JPA applications. It covers entities, identifiers, O-R mappings, using an entity manager, creating and executing queries, and configuration of the persistence.xml file. The Refcard also reviews Mapping an Object, Obtaining and Using an Entity Manager, Transactions, Querying, Hot Tips and more.