If you are a member of The Data Warehousing Institute, be sure to check out the April 1, 2010 issue of
Flashpoint.
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My article
The Hidden Value of Dimensional Design explains how you can use dimensional design to cultivate a shared understanding of project scope between business and technical personnel.
This publication is only available to TDWI members.
If you are not a member (or if you want to read more on the topic) have a look at this blog post I wrote in 2007:
Drive Warehouse Strategy With A Dimensional Model.
- Chris