Microsoft Business Intelligence: Shrunken Dimension in DWH

Sunday 22 May 2022

Shrunken Dimension in DWH

A shrunk dimension is another sub-set. For example, the fact table for orders which contain a foreign product main, but a foreign product segment, which is in the product table, but which is much less granular may be included in the target fact table. One way to deal with the heterogeneous grain condition is to create a smaller dimension table that has the crop group as its primary key. If the product dimension is black-snow, a different product type table is usually available, which will act as the shrunk dimension.

We can see it in the “AdventureWorksDW” Database.

SELECT *
FROM   dimproductcategory;

SELECT *
FROM   dimproductsubcategory;

SELECT *
FROM   dimproduct;

SELECT *
FROM   factinternetsales;