Question

In the context of aggregate fact tables, what are "one-way aggregates"?

a.

Aggregates that involve only one dimension hierarchy

b.

Aggregates that involve all dimension hierarchies

c.

Aggregates that reduce the number of dimensions in a fact table

d.

Aggregates that summarize data at the lowest level of granularity

Posted under Data Warehousing and OLAP

Answer: (a).Aggregates that involve only one dimension hierarchy Explanation:"One-way aggregates" are aggregates that involve only one dimension hierarchy, moving up the hierarchy while keeping the other dimensions at their lowest levels.

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Q. In the context of aggregate fact tables, what are "one-way aggregates"?

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