Question

Why is a clean and complete data warehouse considered the bedrock for data mining?

a.

It reduces the need for data mining algorithms

b.

Data mining algorithms require large amounts of data at the lowest level of granularity

c.

Data mining algorithms work best with incomplete data

d.

Data warehouses do not support data mining operations

Posted under Data Warehousing and OLAP

Answer: (b).Data mining algorithms require large amounts of data at the lowest level of granularity Explanation:Data mining algorithms require large amounts of data at the lowest level of granularity, and a clean and complete data warehouse provides this.

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Q. Why is a clean and complete data warehouse considered the bedrock for data mining?

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