Transitive-Closure Input: a list of pairs, L. Interpreting L as a binary relation, Transitive-Closure should return the transitive closure of L. Examples: (Transitive-Closure '((a b) (b c) (a c))) ---> '((a b) (b c) (a c)) (Transitive-Closure '((a a) (b b) (c
Transitive-Closure Input: a list of pairs, L. Interpreting L as a binary relation, Transitive-Closure should return the transitive closure of L. Examples: (Transitive-Closure '((a b) (b c) (a c))) ---> '((a b) (b c) (a c)) (Transitive-Closure '((a a) (b b) (c
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
- Transitive-Closure
Input: a list of pairs, L. Interpreting L as a binary relation, Transitive-Closure should return the transitive closure of L.
Examples:
(Transitive-Closure '((a b) (b c) (a c)))
---> '((a b) (b c) (a c))
(Transitive-Closure '((a a) (b b) (c c)))
---> '((a a) (b b) (c c))
(Transitive-Closure '((a b) (b a)))
---> '((a b) (b a) (a a) (b b)))
(Transitive-Closure '((a b) (b a) (a a)))
---> '((a b) (b a) (a a) (b b))
(Transitive-Closure '((a b) (b a) (a a) (b b)))
---> '((a b) (b a) (a a) (b b))
(Transitive-Closure '())
---> '()
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