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How do I map this?

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I have 2 tables Table1 and Table2

Primary Key:
Other Columns:

Primary Key:
Other Columns:
Now, when I load Table1, i want to load rows of Table2 that match the following criteria:
Table1.A = Table2.A and Table1.D = Table2.D

Is this a many-to-many ? Is so, can I map it since i don't have a join table?
[ June 13, 2006: Message edited by: Dushy Inguva ]
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