Clearly, the theoretical minimum for the selectivity of an access path is the number of pages that hold the output of the relational operator involved. What is the best theoretical upper bound on the selectivity of an access path when selection or projection operators are involved?
What will be an ideal response?
The theoretical upper bound on the selectivity of an access path when selection or projection operators are involved is the number of pages in the original relation.
Computer Science & Information Technology
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Computer Science & Information Technology
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Computer Science & Information Technology
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Computer Science & Information Technology
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Computer Science & Information Technology