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Are there any cases where the dimensional table is larger than the fact table?

Published
  • May 01 2000, 1:00am EDT

Q:  

Are there any cases where the dimensional table is larger than the fact table? What are the methods in which I can take care of the slowly changing dimension fields?

A:  

Chuck Kelley's Answer: I imagine that if you have a large dimension table that contains rows that never point to a fact, then you could. I don't think that it is very common at all. Slowly changing dimensions are fun to do. Ralph Kimball describes three types (ways) to deal with them in his book The Data Warehouse Toolkit. Which type you use depends on your requirements. I prefer keeping a history of everything, so his "type 2" is the most common form I use.

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