The Java Data Objects (JDO) standard provides a unified, simple, and transparent persistence interface between Java application objects and data stores, and can significantly affect how deal with persistent data.

This category contains JDO related resources, including articles about JDO, JDO implementations and tools.


JPA is the Java Persistence API, part of the Java EJB 3.0 specification. JPA defines annotations and xml meta-data for object-relational mapping, and a runtime API for persisting Java objects.
Please submit only sites dealing specifically with JPA to this category.