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This page outlines the status of high-level feature areas to bring from Apple's Java SE 6 to the macosx-port. . Features in the macosx-port src repository
While standing on one foot, I would say that the neo4j project is an implementation for an embedded java graph database. Unlike the traditional relation databases, the graph database has no table structure for storing its data. Instead it uses a more dynamic (unstructured) network composition. Using mathematical terminology, a network of nodes is called a graph.
We Recommend These Resources The JPA , short for Java Persistence API, is part of the Java EE 5 specification and has been implemented by Hibernate , TopLink , EclipseLink , OpenJPA , and a number of other object-relational mapping (ORM) frameworks. Because JPA was originally designed as part of the EJB 3.0 specification , you can use it within an EJB 3.0 application. But it works equally well outside of EJB 3.0, for example in a Spring application . And when even Gavin King, the designer of Hibernate, recommends using JPA in the second edition of Hibernate in Action, a.k.a.