Best deisgn for your requirement is ABAP Proxy, because you could have control to develop/build required logic to pull data from different tables(master and Trasaction) .
or
Develop customized RFC/IDoc then build logic.
Best deisgn for your requirement is ABAP Proxy, because you could have control to develop/build required logic to pull data from different tables(master and Trasaction) .
or
Develop customized RFC/IDoc then build logic.