Question

When considering multicolumn indexes for dimension tables, what should be considered for arranging columns?

a.

Arrange columns based on alphabetical order

b.

Arrange columns randomly

c.

Place the columns more frequently accessed or at higher hierarchical levels at the high order

d.

Place the columns with low selectivity at the high order

Posted under Data Warehousing and OLAP

Answer: (c).Place the columns more frequently accessed or at higher hierarchical levels at the high order Explanation:When considering multicolumn indexes for dimension tables, it's advisable to place the columns that are more frequently accessed or at higher hierarchical levels at the high order of the multicolumn indexes.

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Q. When considering multicolumn indexes for dimension tables, what should be considered for arranging columns?

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