7) Conceptual Model for Promotion Sales KPI ... added June 15th. 2017.
  
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6) Logical Model for Promotion Sales KPI ... added June 15th. 2017.
  
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5) The Payment Method KPI ...
  
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4) The Retail Dimensional Model ...
  
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3) The Retail Data Mart ...
  
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2) The Logical Data Model (ERD)
  
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1) The User-Friendly Conceptual Model 
  
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