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Question

What is the primary purpose of multidimensional database management systems (MDDBs) in data warehouses?

a.

Data storage for online transaction processing

b.

Aggregating data for analysis

c.

Data cleansing and transformation

d.

Data retrieval for operational systems

Answer: (b).Aggregating data for analysis Explanation:MDDBs are used in data warehouses for aggregating data in various ways and storing summary data for analysis.

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Q. What is the primary purpose of multidimensional database management systems (MDDBs) in data warehouses?

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