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Archives of the TeradataForum
Message Posted: Thu, 27 Apr 2006 @ 10:00:37 GMT
Subj: | | Re: Question about UPI Vs NUPI |
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From: | | Jiang, Yong |
Naveen:
In TD, PI is different PK, PK is 3NF mechanism to make sure the row uniquess, but in TD, PI is the way for even distributiion over AMPS, In
most cases, OLTP PK usually be mapped to USI in TD.
If you are sure there is no duplicate rows in your source db then you can define your SET table, otherwise in MULTISET, alternativly you can
Define NUPI instead of UPI, but UPI stands better performance than NUPI.
FYI
Yong
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