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___________ are the indices that store the values of some attributes along with the pointers to the recor.

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+1 vote
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in RDBMS by (118k points)
___________ are the indices that store the values of some attributes along with the pointers to the recor.

(a) Binary indices

(b) Covering indices

(c) Key indices

(d) Static indices

This question was addressed to me during an online exam.

I'm obligated to ask this question of B+ trees topic in chapter Indexing and Hashing of RDBMS

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The correct option is (b) Covering indices

To explain I would say: Covering indices are the indices that store the values of some attributes along with the pointers to the record. Storing extra attribute values is useful as they allow us to Answer queries without actually looking up the records.

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