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If no rule can be derived from any combination of others then the set of rules is said to be ________

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If no rule can be derived from any combination of others then the set of rules is said to be ________

(a) Primitive

(b) Axiomatic

(c) Minimal

(d) Atomic

This question was addressed to me during an interview.

The question is from Transformation of Relational Expressions in division Query Processing and Optimization of RDBMS

1 Answer

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Correct option is (c) Minimal

Explanation: A set of equivalence rules is said to be minimal if no rule can be derived from any combination of others. Query optimizers use minimal sets of equivalence rules.

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