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Re: What is a 'data mart'?

From: Jonathan Gennick <jonathan_at_gennick.com>
Date: Wed, 30 Apr 2003 06:06:30 -0800
Message-ID: <F001.0058C84F.20030430060630@fatcity.com>


Tuesday, April 29, 2003, 2:52:35 PM, you wrote: rcn> Ive read some documentation and its not 100% clear on what this means.

It's kind of like K-Mart, a place where you can buy cheap data at discount prices. <grin>

Seriously, read on:

rcn> I think people use the
rcn> terminology differently. I take it to mean that you can have one main warehouse environment
rcn> where you have a repository of your data, then you can publish parts of that data warehouse to
rcn> individual data marts which are simply subsets of the data warehouse.

I'm not convinced the term "Data mart" has ever been defined rigorously, at least not as rigorously as the term "database'. Your definition comes closest to my own understanding, which is that a data mart is a subset of a data warehouse, or even just a small data warehouse.

Best regards,

Jonathan Gennick --- Brighten the corner where you are http://Gennick.com * 906.387.1698 * mailto:jonathan@gennick.com

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Author: Jonathan Gennick
  INET: jonathan_at_gennick.com

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