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many to many relationship

Posted on 2015-02-06
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Last Modified: 2015-02-09
Hi,
I have three table designed like following:
tab1 <= many-to-may => tab2
tab2 <= many-to-may => tab3.

I know if I have many-to-many relationship between two table, I need a cross (association) table between them.
but, can I have one cross table between the above described three tables?

thanks.
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Question by:CCVOIP
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2 Comments
 
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Expert Comment

by:MikeOM_DBA
ID: 40594662
You need two cross-reference tables.
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HuaMinChen earned 500 total points
ID: 40594907
It will make a mess if you only use one cross table. It can be possible but there would be extra work to check/confirm if the record is for which relationship.
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