Primary key(s) in a table

Sat, 08 Aug 2009 05:15:05 -0700 

Hi,
What is the best approach and pattern followed while creating primary key for a table that have a fromDate field. For example in ProductStoreSurveyAppl table fromDate is not part of primary key but there are many examples where fromDate is part of primary key in tables. 

Thanks,
Vikas




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