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Fact answering multiple questions

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Fact answering multiple questions Empty Fact answering multiple questions

Post  chade25 Thu Apr 12, 2012 6:11 pm

Is it advisable to have a fact table that would contain say amounts and stuff for pell grants and accounts recievable and loans, or is it better to simplify it and make a grant_fact table , loan_fact table and so on? Or does it just not matter?


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Fact answering multiple questions Empty Re: Fact answering multiple questions

Post  ngalemmo Thu Apr 12, 2012 7:03 pm

If your intent is to build a data warehouse, a fact table should represent a single business event or state, and be maintained at the lowest level of detail (context) of the event. So, if you are doing a sales fact, it should be the sale at the lowest level of detail (greatest dimensionality). If you do that for any fact, then, information is a simple matter of combining measures along common attributes.

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