15
Answer (Choose 2 answers)
Suppose relation R(A,B) and S(B,C,D) (see figure).Compute the R right outer join S, where the condition is: R.B = S.B. Then identify 2 tuples of R that do not appear in the computed result.
R
A. (10.x)
10
X
40
B. (30.y)
C. (70.t)
30
50
70
S
Z
60
D. (50.z)
y
Z
50
Z
t
Z
70
X
Ext
