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How to add new dimension record

How to add new dimension record

How to add new dimension record

I am very new to this and this question is more regarding design then anything else so I am sure there is more then one right answer..

I have a dimension table.
I have a fact table.
I have a staging table.

A new record shows up in the staging table.  I want to add that table to fact table but the dimension does not exist.

What is the best course of action?

Do I error out the record?  
Do I create the dimension record?

RE: How to add new dimension record

You should load and process your dimensions before it's related fact records.  If you still have a fact record without corresponding dimension(s), you can do a couple of things based on your business requirements:  1.  Error it out and put it in an error table for further review.  2.  Assign it to a default 'UNKNOWN' dimension.  3.  Add a dimension record with the business key, but with as yet to be determined attributes.  

It really depends on why you are getting a fact record without the dimension(s) records and what your business requirements are for your environment.

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