Question: Can renaming be pushed through jointhat is, does the following algebraic law hold? N (R S) = N (R) N (S) Support your answer by

Can renaming be pushed through jointhat is, does the following algebraic law hold? N (R S) = N (R) N (S) Support your answer by an example (i.e., give relations and parameters so that the expressions on the two sides of = are equal or non-equal). If your answer is no, additionally impose restrictions on the parameter (i.e., N) so that the law holds.

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