SSAS One to Many Dimensional Relationship

Question

Question in SSAS for y\'all. I am attempting to define a One to Many relationship in an OLAP SSAS cube environment. However, i\'m running into problems with defining a pri

Answer 1

What you have is an example of a many-to-many relationship between you fact data (Trades) and your dimension data (Model Contract). have a look at this: dimension relationship . Your case is a rare case since model contracts can only be assigned to one Contract Name but it still falls under the many-to-many case. This is handled using a bridge-table in dimensional modeling and in SSAS they call it an intermidiate fact table. Once you have your DSV setup like this:

You would then create your dimensions in your project and then create a measure group for ModelContract to be able to use it as an intermediate fact table. You would then setup the dimension usage for the cube choosing a many-to-many relationship:

As a side note, you should always use surrogate keys for your dimensions. They have several advantages such as storage space in you fact table, slowly changing dimensions, source system decoupling,...