MS BI Workshop #9 – Dimension table example in a snowflake schema
I guess my notes about dimension modeling will not be very complete if I do not show a typical snowflake schema.
In this typical snowflake schema example, the dimension Product is normalized, because the Product Sub Category is stored in a separate table ProductSubCategory. ProductSubCategory is also normalized with Product Category is in a separate table.
The snapshot is from the DSV of the SSAS project Adventure Works DW 2008. Later in the workshop, the presenters will show us how to implement the dimension hierarchies with snowflake schema in SSAS.
1. The relationship arrow always starts from the most granular dimension. In this example, Product –> Sub Category –> Category
2. SSAS can handle the hierarchies in snowflake schema easily (if we know how 🙂 )