Question: What is the best data modeling approach for a staging area? Please note that the staging area in my case would be the source for both the warehouse (dimensional model) and also an OLTP (relational model) system.

Chuck Kelley's Answer: In a business intelligence staging area, I prefer to have the structures be a replica of the source system with a date or key that says when the data was pulled. That way, I can build my extraction processes to yank the data as quickly as possible, not to bog down the source system. From here, I start the transformation processes.

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