Question: For the relation R ( X , Y , Z , V , W ) where X and W are keys, note for each of

For the relation R(X,Y,Z,V,W) where X and W are keys, note for each of the following projections if it will have the same number of rows as R: explain your answers: pivx(R ), piwx(R),pix(R),pixy(R),piwxyz(R)

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