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If access paths are available on all the conditions of a disjunctive selection, each index is scanned for pointers to tuples that satisfy the individual condition. This is satisfied by

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If access paths are available on all the conditions of a disjunctive selection, each index is scanned for pointers to tuples that satisfy the individual condition. This is satisfied by

(a) A10

(b) A7

(c) A9

(d) A6

I got this question in class test.

Query is from Selection Operation in division Query Processing Techniques of Database Management

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Right answer is (a) A10

To explain: A10 – Disjunctive selection by union of identifiers.

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