The properties of relational algebra (commutativity, associativity, distribution) permit us to take a relational algebra expression and remodel/rewrite it into one other one which is logically equal. Nonetheless, I’m struggling to search out any such properties so far as the grouping operator is anxious.
I’m not certain however I feel it’s derived from the opposite relational operators. Is that this right? I’d suppose that if that is right, then it explains why it’s more durable to search out such properties. That being stated, Ɣ (GROUP BY) stays a vital operator, so how can one cause about its properties in relational algebra? Has this been performed earlier than?
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