Question

In a dimension table, what is the primary key used for?

a.

Identifying the production system key

b.

Maintaining built-in meanings

c.

Uniquely identifying each row

d.

Representing operational system data

Posted under Data Warehousing and OLAP

Answer: (c).Uniquely identifying each row Explanation:The primary key in a dimension table is used to uniquely identify each row in the table.

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Q. In a dimension table, what is the primary key used for?

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