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Message Posted: Tue, 02 Sep 2003 @ 21:20:24 GMT


     
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Subj:   A Datamodeling question
 
From:   Anomy Anom

<-- Anonymously Posted: Tuesday, September 02, 2003 16:35 -->

I have a couple of questions.

1. Which is best suited for a datamart that will exist as a teradata database. The dimensional model or relational model.

2. We have an account table (2.5 million records) which has around 30 cols of which say 25 are stable (or we do not care for history on these cols) and 5 cols which can change and the changes have to be tracked. The load is done once a month and we also have a customer metrics table which holds monthly data and has info. like current balance amt, avg balance amt etc.

Which would be the best way to implement this.

1. A SCD table

2. A type I dimension table and a SCD table holding just the attributes that can change.

3. multiple history tables (one for each attribute).

4. Other (Please explain.)

Any response is much appreciated.

Thanks!!!



     
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