Exercise (Tabular Representation)
Represent the following relation R from A to B, with A = { 1, 2, 6, 7} B = { a, b, c}
R1 = {(2, a), ( 1, c) , (2, c), (6, a) , (7, b) }
R2 = {(2, b), ( 1, a) , (2, c), (6, a) , (7, b) }
R1 a b c
1 x
2 x x
6 x
7 x
R2 a b c
1 x
2 x x
6 x
7 x