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Message Posted: Thu, 13 Mar 2003 @ 12:02:12 GMT


     
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Subj:   Surrogate Key data types
 
From:   Jim Downey

I currently have a model with different datatypes for two surrogate key uses. Lookup tables have a UPI that is a Smallint. Larger data tables have a UPI that is Decimal(18,0).

There seems to be some conventional wisdom that stipulates you should not use Byteint as a UPI (or anywhere for that matter). It seems to me that for lookup tables with low cardinality, (Male/Female) a byteint would be sufficient. Are there still reasons you should not use a Byteint?

Jim



     
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