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Question

What issues can arise when using operational system keys as primary keys for dimension tables?

a.

Data redundancy and inconsistency

b.

Compatibility with data warehousing tools

c.

Improved query performance

d.

Efficient data aggregation

Answer: (a).Data redundancy and inconsistency Explanation:Using operational system keys as primary keys can lead to data redundancy and inconsistency, especially when operational keys change or have built-in meanings.

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Q. What issues can arise when using operational system keys as primary keys for dimension tables?

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