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Message Posted: Tue, 19 Feb 2013 @ 15:23:35 GMT


     
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Subj:   Tables: How small is small for TD to dynamically
 
From:   Attila_Finta

I have a question regarding PI definition for small tables. Teradata replicates small tables across all AMPs (when joined to another table having a different PI). Therefore we have been recommending that small tables should have a Unique PI that is the same as the PK (to maximize even distribution). For larger tables I believe we must also consider frequent access points and join paths. Do you have any guidance re: "how small is small"? How small is small enough for TD to replicate the table? 1 MB? 10 MB?


Thanks.

Attila Finta



     
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