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Question

What is the requirement for incremental refreshes in an OLAP system?

a.

Periodic full refreshes

b.

Continuous full refreshes

c.

Incremental refreshes of extracted and aggregated OLAP data

d.

No refreshes are needed

Posted under Data Warehousing and OLAP

Answer: (c).Incremental refreshes of extracted and aggregated OLAP data Explanation:An OLAP system should provide for incremental refreshes of the extracted and aggregated OLAP data.

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Q. What is the requirement for incremental refreshes in an OLAP system?
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