Question: EXERCISE 3 Consider the following relation R (A, B, C, D, E) Select which of the following projections have the same cardinality as R 1.

EXERCISE 3 Consider the following relation R (A, B, C, D,

EXERCISE 3 Consider the following relation R (A, B, C, D, E) Select which of the following projections have the same cardinality as R 1. PROABcD (R) 2. PROJAC (R) 3. PROJ B.c (R) 4. PROJ c (R) 5. PROJ c R)

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