Wednesday, June 3, 2015

Data warehouse - Concepts - Part I


Here in this section, I am going to give a very brief explanation about few regular terms. Later I will cover Star schema and snow flake schema and slowly changing dimensions as well.

Dimension:
         Dimensions provide the "Who When What Why How " context in the surroundings of a business process event.

Fact:
        Facts are the measurements that result from a business process event and facts are almost always numeric.

Dimension table:
        Dimension table stores attributes or dimensions that describe the objects in the fact table.

Fact Table:
        Fact table contains the numeric measures produced by an operational measurement event in the real world.
             

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