We like to load the data into Oracle Applications(11i) Screen which has master and detail blocks in the screen.
I don't see any help to load these kind of records.
could you please let us know the help or related documents so that we could load them properly.

Sample data file:
Top portion Bottom portion
Customer name address1 address2 Mark 123 Ave Santa Clara
234 Ave San Jose
David 234 Ave San Mateo
333 Drive Santa Clara
111 Drive San Mateo