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Which of the following is not Armstrong’s Axiom?

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Which of the following is not Armstrong’s Axiom?

(a) Reflexivity rule

(b) Transitivity rule

(c) Pseudotransitivity rule

(d) Augmentation rule

I had been asked this question by my school principal while I was bunking the class.

Asked question is from Functional-Dependency Theory topic in chapter Normalization of Database Management

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The correct choice is (c) Pseudotransitivity rule

The best explanation: It is possible to use Armstrong’s axioms to prove that Pseudotransitivity rule is sound.

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