Show how to derive the following equivalences by a sequence
Show how to derive the following equivalences by a sequence of transformations using the equivalence rules in Section 13.2.1.
a. 1∧2∧3 (E) = 1 (2 (3 (E)))
b. 1∧2 (E1 3 E2) = 1 (E1 3 (2 (E2))), where 2 involves only attributes from E2
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show how to derive the following equivalences by a sequence of transformations using the equivalence rules in section
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