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Question

Why are OLAP systems typically not refreshed daily?

a.

Daily refresh results in slow query response

b.

Frequent refreshes lead to unpredictable system behavior

c.

Load times for precalculating hypercubes are exorbitant

d.

Daily refresh is unnecessary for OLAP systems

Posted under Data Warehousing and OLAP

Answer: (c).Load times for precalculating hypercubes are exorbitant Explanation:OLAP systems are typically not refreshed daily because load times for precalculating and loading all possible hypercubes are exorbitant.

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