Question

When is overwriting of dimension table attributes considered appropriate in a data warehouse?

a.

Always

b.

Never

c.

It depends on the type of change and information preservation.

d.

Only for dimension tables with few attributes

Posted under Data Warehousing and OLAP

Answer: (c).It depends on the type of change and information preservation. Explanation:Overwriting of dimension table attributes is not always the appropriate option in a data warehouse, and it depends on the type of change and what information must be preserved.

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Q. When is overwriting of dimension table attributes considered appropriate in a data warehouse?

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