(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. (2.4.6) of S.
B. (3.4) of R.
C. (4.7.9) of S.
D. (4.6.8) of S.
Osh
R
1
2
4
6
S
2
4
6
3
5
4
7
4
the exam.
