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Question

What is the problem with reused primary keys when capturing data in a data warehouse?

a.

Reused primary keys improve data quality.

b.

Reused primary keys eliminate data duplication.

c.

Reused primary keys result in data accuracy.

d.

Reused primary keys lead to duplication in the data warehouse.

Answer: (d).Reused primary keys lead to duplication in the data warehouse. Explanation:Reused primary keys lead to duplication in the data warehouse when capturing both present and past data.

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Q. What is the problem with reused primary keys when capturing data in a data warehouse?

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