Intermediate Database Indexing

Test your Intermediate-level Caching Performance Database Indexing skills in Database Data Management. This timed assessment evaluates your expertise in Information Technology.

Duration: 5 minutes

•40 questions

Time Remaining: 05:00

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40 questions remaining

Question 1 of 40Assessment

When an execution plan shows a 'Key Lookup' or 'Bookmark Lookup', what does this typically indicate about the current index?

A. The index is fragmented and needs to be rebuilt to improve performance.

B. The index is being used as a primary key, which is the most efficient method.

C. The index does not contain all the columns requested by the SELECT statement.

D. The query optimizer has chosen to ignore the index in favor of a scan.

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