Question
5. Suppose A = {1, 2, 3, 4}. Let S and R be relations on A defined as follows: S = { (1, 1), (1,
5. Suppose A = {1, 2, 3, 4}. Let S and R be relations on A defined as follows:
S = { (1, 1), (1, 3), (2, 3), (3, 4), (4,1) } R = { (1, 4), (2, 2), (3, 2), (4, 2) }
a. Explain why the ordered pair (1,2) is or is not in the relation S o R.
b. Explain why the ordered pair (2,3) is or is not in the relation S o R.
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Constraint Databases And Applications Esprit Wg Contessa Workshop Friedrichshafen Germany September 1995 Proceedings Lncs 1034
Authors: Gabriel Kuper ,Mark Wallace
1st Edition
3540607943, 978-3540607946
