Hi Elmar,
CMP Entity Beans O/R mapping is (in an ideal world) independant from the underlying database vendor. This is true as long as you don't run into a situation where you need special database-dependant functions.
You have to define the data source which will be used for persistence of the EJBs, but the vendor of the DB is not important in the first place.
Hope that helps.
Regards
Stefan
You will want to have a look at this tutorial: https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sapportals.km.docs/documents/a1-8-4/creating a j2ee-based car rental application.pdf which shows a connection to a specific vendor's database (I wonder which vendor 😉 But you could change that configuration to gain access to another database, as long as you had drivers, access, etc.
Dale
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