SQL Server Analysis Services Concepts
page 3 of 6
by Nidal Arabi
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Unified Dimensional Model

A nifty feature (a very important logical layer) is provided with SQL Server 2005, and later versions, is the UDM (Unified Dimensional Model).

The UDM is used by the AS to access the underlying data to create OLAP cubes and data mining models. This model combines the best of the features of Relational and Dimensional models. The UDM will be explained through examples in the future articles.

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