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What is a distributed data warehouse?

By
  • Joe Oates, Chuck Kelley
Published
  • June 04 2003, 1:00am EDT

Q:

What is a distributed data warehouse?

A:

Chuck Kelley’s Answer: If you believe a data warehouse is a single physical database, then a distributed data warehouse would be where there are different physical databases that work together as a single physical database (In other words, there is not difference between distributed data warehouse and distributed database). There are others who will say that the data marts unioned together would make up a distributed data warehouse. It depends on your definition.

Joe Oates’ Answer: A distributed data warehouse is a conglomeration of separate components that are connected via a network. The goal is to have these separate components appear as a single global data warehouse image.

In my experience the distributed data warehouse approach has not been successful. Please see my answer to the previous question regarding changing from and integrated to federated data warehouse approach.

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