Question

How do granular fact tables facilitate "graceful" changes to data models?

a.

By requiring changes in existing queries

b.

By necessitating changes in the fact table structure

c.

By allowing new attributes to be added without affecting old queries

d.

By minimizing the number of fact table rows

Posted under Data Warehousing and OLAP

Answer: (c).By allowing new attributes to be added without affecting old queries Explanation:Granular fact tables facilitate "graceful" changes because new attributes can be added to dimensions without affecting old queries.

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Q. How do granular fact tables facilitate "graceful" changes to data models?

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