niha.736 (6/12/2013)
Please help in understanding the degenerate dim.
We call degenerate dimension a dimension key (sitting on a fact table) that does not have an actual dimension table related. An example of this would be a check number, a fact table like fact_checks would have a check_number column that looks like a dimension but there is no dimension table for it therefore, a degenerate dimension as labeled by Kimball.
Hope this helps.
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Pablo (Paul) Berzukov
Author of Understanding Database Administration available at Amazon and other bookstores.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.