This good reference, and there are now numerous persistence enabling systems built around it. One which we have found to work very well and quite efficiently is ObjectRelationalBridge (OJB) from Apache. We use a rather generic persistence interface in OpenEMed and map it to a number of persistence mechanisms. This enables us to leverage the performance of different systems for different applications. The most efficient usually is an object database.
Dave Forslund Bert Verhees wrote: > >> The paper of Scott W. Ambler is very interesting in this context >> (google for it) > > http://www.ambysoft.com/essays/persistenceLayer.html > >> >> Bert >> >> >
