Home » Microsoft » 70-768 » Which relationship type should you use between the Shipment table and the new dimension?
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You have a Microsoft SQL Server Analysis Services (SSAS) instance that is configured to use multidimensional mode. You create the following cube:
You need to create a new dimension that allows users to list shipments by the country where the product is shipped.
Which relationship type should you use between the Shipment table and the new dimension?
A. no relationship
B. regular
C. fact
D. referenced
E. many-to-many
F. data mining
Correct Answer: E
Explanation/Reference:
Many to Many Dimension Relationships.
In most dimensions, each fact joins to one and only one dimension member, and a single dimension member can be associated with multiple facts. In relational database terminology, this is referred to as a one-to-many relationship. However, it is frequently useful to join a single fact to multiple dimension members. For example, a bank customer might have multiple accounts (checking, saving, credit card, and investment accounts), and an account can also have joint or multiple owners. The Customer dimension constructed from such relationships would then have multiple members that relate to a single account transaction.
References:https://docs. microsoft.com/en-us/sql/analysis-servlces/multidimensional-models-olap-logical-cube-objects/dimension-relationships
If you only create a Country dimension with a Regular relationship with the Shipment fact table, you may not be able to retrieve the Product.
I do agree with the Answer Many-to-Many Relationship with InternetSales as Intermediate Fact Table and Customers as the Regular dimension acting as link between both fact tables.
Valid reference URL: https://docs.microsoft.com/en-us/analysis-services/multidimensional-models-olap-logical-cube-objects/dimension-relationships?view=asallproducts-allversions
The diagram suggests two separate fact tables exist with no way to join shipments to internetsales so the suggested “correct answer” with a ‘many-to-many’ relationship makes no sense here. Shipment to country would be regular.
It says “Shipment table and the new dimension”, not country. So there is a new table between Shipment and Country