Considering the relation schemas R (A, B, C, D) and S (C, D, E, F), what will be the degree of the resultant…

Question

Considering the relation schemas R (A, B, C, D) and S (C, D, E, F), what will be the degree of the resultant relation of the following Relational Algebra expression, where “⨝” represents the “natural join” operation?

(σA=1(R)) ⨝ (πC,D,E(S))

Accepted Answer

Correct answer: C

Answer

A. 3

Answer

B. 4

Answer

C. 5

Answer

D. 6

Considering the relation schemas R (A, B, C, D) and S (C, D, E, F), what will…