【单选题】Suppose relation R(A,B) has the following tuples: A B 1 2 3 4 5 6 and relation S(B,C,D) has the following tuples: B C D 2 4 6 4 6 8 4 7 9 Compute the theta-join of R and S with the condition R.A < S.D...
【单选题】Suppose relation R(A,B) has the following tuples: A B 1 a 7 t 2 g 4 c 9 t and relation S(B,C,D) has the following tuples: B C D c 5 6 a 7 8 t 8 9 Compute the theta-join of R and S with the condition R...