(Choose 1 answer)
Suppose relations: R(A,B) and S(B,C,D) (see figure)Compute the full outer join of R and S, where the condition is: R.A>S.B AND R.B-S.C. Which of the following tuples of R or S is dangling (and therefore needs to be padded in the outer-join)?
A. (3.4) of R.
B. (2.4.6) of S.
C. (4,7,9) of S.
D. (4.6.8) of S.
R
1
2
S
2
4
6
3
5
4
6
4
4
6
7
8
9
E24
