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A relational algebra operation annotated with instructions on how to evaluate it is called _______

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A relational algebra operation annotated with instructions on how to evaluate it is called _______

(a) Evaluation algebra

(b) Evaluation plan

(c) Evaluation primitive

(d) Evaluation engine

I have been asked this question in examination.

I want to ask this question from Query Processing in chapter Query Processing and Optimization of RDBMS

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Right option is (c) Evaluation primitive

Easy explanation: A relational algebra operation annotated with instructions on how to evaluate it is called Evaluation primitive. The evaluation primitive is the basis for evaluation of queries.

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