> In Delphi, using IBX for acessing Firebird, I use one TIBDatabase
> for connection and various TIBTransaction for transactions... I may
> set the DefaultDatabase's property of each TIBTransaction for only
> one TIBDatabase. In such case, is possible associate each
> transaction with one query.
>
> In JayBird, how to do is?

It is not possible. In JDBC only one transaction is associated with the
connection. This is defined in specification. If you wish, you can try
programming in the Firebird API where this feature is available, but I would
recommend to get used to this approach.

Roman