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Re: Data Warehouse design

From: paquette stephane <stephane_paquette_at_yahoo.com>
Date: Wed, 12 Jun 2002 12:39:23 -0800
Message-ID: <F001.0047C605.20020612123923@fatcity.com>


Yes it is ok to have sequences as the primary keys. The dimension should not use keys from the source systems as their own keys. They must be independant. Also, since the PK of the dimensions are foreign keys in the fact tables, if using a non-generated key you will increase the size of the fact tables for nothing.

I've never put relationsips between dimension tables. All the validation is done before the load in the staging area.


Stéphane Paquette
DBA Oracle, consultant entrepôt de données Oracle DBA, datawarehouse consultant
stephane_paquette_at_yahoo.com

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Received on Wed Jun 12 2002 - 15:39:23 CDT

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