Question: 3. Computing alpha closure. Consider R (ABCDEF) with F = {A B, B CE, CD A). Compute (i) At i (CD)+ 4. Determine elements in

3. Computing alpha closure. Consider R (ABCDEF) with F = {A

3. Computing alpha closure. Consider R (ABCDEF) with F = {A B, B CE, CD A). Compute (i) At i (CD)+ 4. Determine elements in Ft. Consider R (ABCDEF) with F = {A B, B CE, DB9 AF) (i) Is AD F in F-2 (ii) Is A CD in F+7 For each of them, show steps in justification, indicate which Armstrong axiom is used at each step

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