Wayne Eckerson, of The Data Warehousing Institute, recently contacted me about a project he is working on to fully classify, describe and compare the available architectures for data warehouse systems. He had formed four categories: top-down, bottom-up, hybrid and federated. He was interested in having me review his take on federated business intelligence (BI) architectures and comment on the characterizations of the other three.

Wayne's goal is to create an education track on the various architectures so teams can make informed and educated decisions on the appropriate approach given the inherent strengths and weaknesses of each. This is an outstanding goal. As longtime readers know, I have complained for some time about the lack of unbiased education available to teams when it comes to picking the approach that matches the unique characteristics of a site. I have dedicated quite a few column inches of editorial space to educate people on how to make the right choice. So, bottom line: Bravo, Wayne, for driving this initiative.

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