Dear All,
How to build a hibernate mapping that one table is referred by 2 fields, so TabelA field1 and field2 is reffers to TableB field1 and field2

TIA

Are you saying that you want to duplicate data in two separate database tables? Is there a compelling reason for doing this. A better approach would be to keep the data in one place, and have Hibernate associations between classes reference each other tables' data.

So, what's the need for this approach?

One thing I do when I need history tables is to perhas have a trigger that runs when one table is changed an another needs to be updated. That's more at a database level though.