3 Java Data Objects (JDO) org.apache.jdo Apache Software Foundation http://www.apache.org/ /images/jdo_text.gif 2005 org.apache.jdo Java Data Objects 2.0 (JDO) http://issues.apache.org/jira/secure/BrowseProject.jspa?id=10630 /images/JDOx120.gif http://db.apache.org/jdo http://db.apache.org/jdo maven-javadoc-plugin