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Question

What is the purpose of Type 3 changes in data warehousing?

a.

To correct spelling errors

b.

To track changes to attributes over time

c.

To compare performances across transitions

d.

To delete old values

Answer: (c).To compare performances across transitions Explanation:Type 3 changes in data warehousing are used to compare performances across transitions.

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Q. What is the purpose of Type 3 changes in data warehousing?

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