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Caching and reuse of query plans is called as ________

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Caching and reuse of query plans is called as ________

(a) Query caching

(b) Plan caching

(c) Plan memorizing

(d) None of the mentioned

The question was asked in exam.

Question is taken from Choice of Evaluation Plans topic in portion Query Processing and Optimization of RDBMS

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Correct option is (b) Plan caching

Easy explanation: Caching and reuse of query plans is called as plan caching. It is used because the optimal plan for the new constants may differ from the optimal plan for the initial values.

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