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 Business Intelligence  |  Question 22 of 41    Print  
Explain the role of DEGENERATED Dimension in Data Warehouse?

  
Total Answers and Comments: 2 Last Update: October 04, 2007     Asked by: jvenkateshkumar 
  
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March 24, 2007 11:54:18   #1  
sithu Member Since: March 2006   Contribution: 46    

RE: Explain the role of DEGENERATED Dimension in Data ...
A Degenerate dimension is a Dimension which has only a single attribute.
This dimension is typically represented as a single field in a fact table.
Degenerate Dimensions are the fastest way to group similar transactions.
Degenerate Dimensions are used when fact tables represent transactional data.
They can be used as primary key for the fact table but they cannot act as foreign keys.
Cheers Sithu
sithusithu@hotmail.com

 
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October 04, 2007 18:21:56   #2  
Thiru        

RE: Explain the role of DEGENERATED Dimension in Data ...
Degenerated dimension keys are keys in the fact table that are not dimension keys (Foreign keys to the Hiearchy/dimension tables) and measurements. Like Order Number Invoice Number etc.
 
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