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Message Posted: Sat, 23 Feb 2002 @ 19:28:31 GMT


     
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Subj:   Re: NUPI considerations
 
From:   Thomas F. Stanek

Ruth,

I think Jim Judge has the most effective solution. Creating a NUPI on col1, col2 makes the most sense if the vast majority of the accesses into your large table are with a join to the smaller table and the calendar table. The optimizer should do just what Jim described. In this scenario, the Multiset and UPI wouldn't be necessary, at least not to maintain uniqueness.

If most of your large table accesses don't require the calendar table and consistently join to the smaller table, then a NUPI of col1 would work best. In this scenario, I wouldn't' consider Multiset unless you think that the load performance is unacceptable.

Sorry if I lead you astray.

Thomas F. Stanek
TFS Consulting
www.tfsconsulting.com



     
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