Give examples of degenerated dimensions

Showing Answers 1 - 4 of 4 Answers

Bie Tie

  • Aug 14th, 2006
 

Degenerated Dimension is a dimension key without corresponding dimension. Example:

     In the PointOfSale Transaction Fact table, we have:

         Date Key (FK), Product Key (FK), Store Key (FK), Promotion Key (FP), and POS Transaction Number  

Date Dimension corresponds to Date Key, Production Dimension corresponds to Production Key. In a traditional parent-child database, POS Transactional Number would be the key to the transaction header record that contains all the info valid for the transaction as a whole, such as the transaction date and store identifier. But in this dimensional model, we have already extracted this info into other dimension. Therefore, POS Transaction Number looks like a dimension key in the fact table but does not have the corresponding dimension table.

Therefore, POS Transaction Number is a degenerated dimension.

  

 

siokbietie

  • Aug 14th, 2006
 

Degenerated Dimension is a dimension key without corresponding dimension. Example:

     In the PointOfSale Transaction Fact table, we have:

         Date Key (FK), Product Key (FK), Store Key (FK), Promotion Key (FP), and POS Transaction Number  

Date Dimension corresponds to Date Key, Production Dimension corresponds to Production Key. In a traditional parent-child database, POS Transactional Number would be the key to the transaction header record that contains all the info valid for the transaction as a whole, such as the transaction date and store identifier. But in this dimensional model, we have already extracted this info into other dimension. Therefore, POS Transaction Number looks like a dimension key in the fact table but does not have the corresponding dimension table.

Therefore, POS Transaction Number is a degenerated dimension.

  Was this answer useful?  Yes

mri_sonam

  • Dec 18th, 2008
 

Best example is "Invoice Number","bill number","PO Number", these all are degenerated dimensions in the Transaction Tables, they can be maintained in the fact table itself instead of  crating seperate dimensions for this.

  Was this answer useful?  Yes

mahesh

  • Feb 2nd, 2013
 

A source table has a single column, we not transfer this column to dimension table, directly to connected to the fact table ,this fact table called the de-generated dimensional table

  Was this answer useful?  Yes

Give your answer:

If you think the above answer is not correct, Please select a reason and add your answer below.

Answer Question

Click here to Login / Register your free account


 
Send   Reset

 

Related Answered Questions

 

Related Open Questions