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Question

What is the purpose of precalculations and preaggregations in OLAP systems?

a.

To increase load times

b.

To decrease query performance

c.

To provide a faster response to queries

d.

To reduce the need for refresh intervals

Posted under Data Warehousing and OLAP

Answer: (c).To provide a faster response to queries Explanation:Precalculations and preaggregations in OLAP systems aim to provide a faster response to queries at any level of summarization.

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