The role of a Unified Dimensional Model (UDM) is to provide a bridge between the user and the data sources. A UDM is constructed over one or more physical data sources. The user issues queries against the UDM using a variety of client tools.
role of a Unified Dimensional Model (UDM) is to provide a bridge between the user and the data sources. A UDM is constructed over one or more physical data sources. The user issues queries against the UDM using a variety of client tools

The UDM provides the following benefits:

• Greatly enriches the user model.
  
• Provides high performance queries supporting interactive analysis, even over large data volumes.
  
• Captures business rules in the model to support richer analysis.
  
• Supports ‘closing the loop’: letting users can act upon the data they see.

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