tag:blogger.com,1999:blog-9087766.post-1103023352629870072004-12-14T09:22:00.000-02:002004-12-14T09:22:32.630-02:00<a href="http://db.apache.org/ojb/">ObJectRelationalBridge - OJB</a> supports multiple persistence APIs to provide users with their API of choice: <br /> <br /> * A full featured ODMG 3.0 compliant API. (See the ODMG Tutorial for an introduction.) <br /> * A JDO compliant API. We currently provide a plugin to the JDO Reference Implementation (RI). Combining the JDO RI and our plugin provides a JDO 1.0 compliant o/r solution. <br /> A full JDO implementation is scheduled for OJB 2.0. (See JDO tutorial for an introduction to the JDO programming model.) <br /> * An Object Transaction Manager (OTM) layer that contains all features that JDO and ODMG have in common. (See OTM tutorial for details). <br /> * A low-level PersistenceBroker API which serves as the OJB persistence kernel. The OTM-, ODMG- and JDO-implementations are build on top of this kernel. <br /> This API can also be used directly by applications that don't need full fledged object level transactions (See the Persistence Broker Tutorial for details). <br /> <br /> <br />More features: <br /> <br /># Transparent persistence: Persistent classes don't have to inherit from a persistent base class or to implement an interface. <br /># Easy use of multiple databases. <br /># Extremly flexible design with pluggable implementation of most service classes like PersistenceBroker, ObjectCache, SequenceManager, RowReader, ConnectionFactory, ConnectionManager, IndirectionHandler, SQLGenerator, JdbcAccess, ... and so on. <br /># Comes along with fully functional demo applications running against HSQLDB.Elifarleynoreply@blogger.com