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Tables in DWH



Tables in DWH

Dimensions:

•       Dimensions are attributes about facts.

•       They store textual description about business.

•       Dimensions are denormalized due to one to many relationship

Ex: Store, Product, Employee, Customers

 

Facts:

Facts are the actual transactions or values being

analyzed

•       They contain composite primary key where each attribute of primary key is foreign key to the dimension tables

•       A fact table contains the facts at the lowest level granularity

 FACT:

Prodid -------     

Custid--------Dimension keys

SalesDate---

Qty.sold-----

Amt.sold----Fact Measures/KPI’s

 

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