Fact table size calculation

How to calculate fact table size.........and how to find fact granularity? Please tell me answers to these 2 questions..

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divakar021

  • Oct 7th, 2010
 

A Fact table is calculated based on "lowest level granualarity".
        The  lowest level granualarity can be determined from the dimension table (lowest level in each hierarchy).
eg:- 2 years of historical data for 300 products of 200 stores can be calculated as
      (2*365)*300*200

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