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ISRO | ISRO CS 2018 | Question 14

  • Last Updated : 05 Mar, 2021

Which of the following is dense index?

(A) Primary index
(B) Clusters index

(C) Secondary index
(D) Secondary non key index


Answer: (C)

Explanation: Dense index: In a dense index, an index entry appears for every search-key value in the file. In a dense clustering index, the index record contains the search-key value and a pointer to the first data record with that search-key value. It is also a secondary index.

Option (C) is correct.

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