Microsoft Azure Data Fundamentals DP-900 Practice Question
In Power BI Desktop you want to show total sales that automatically recalculates for whatever slicers or filters a user selects, but you also want to avoid adding extra stored data to the model. Which data-modeling feature should you create?
Add a calculated column to the Sales table that holds the running total.
Build a hierarchy that contains Year, Quarter, and Month levels.
Define a many-to-many relationship between the Sales and Date tables.
Create a DAX measure that returns the sum of the SalesAmount column.
A measure is defined with DAX and is evaluated at query time for the current filter context, so it does not add persistent storage to the data model. A calculated column stores its results in the model, increasing its size. Hierarchies organize existing fields for drill-down but do not perform calculations. Relationships define how tables connect and likewise do not create dynamic aggregations.
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Microsoft Azure Data Fundamentals DP-900
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