BPM

Once business classes have been identified, does anyone know how to associate business classes to databases and schemas?

sorry to bother wonder if you can help me, am new with using Mbpm and right now in the deisigner the "other business objects" does not show in the "data access" window. It usually shows on the bottom part but is not comming out at all. Any idea why this is happening?? hope you can help. thx.