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ALGORITHM 1 A Procedure for Computing the Transitive Closure. procedure transitive closure (MR: zero-one n x n matrix) A := MR B := A for i:= 2 to n A := A OMR BBVA return B{B is the zero-one matrix for R*}

ALGORITHM 1 A Procedure for Computing the Transitive Closure. procedure transitive closure (MR: zero-one n x n matrix) A := MR B := A for i:= 2 to n A := A OMR BBVA return B{B is the zero-one matrix for R*}

Database System Concepts
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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ALGORITHM 1 A Procedure for Computing the Transitive Closure. procedure transitive closure (MR : zero-one n × n matrix) A := MR B = A for i:= 2 to n A := A OMR B:= B VA return B{B is the zero-one matrix for R*}
Transcribed Image Text:ALGORITHM 1 A Procedure for Computing the Transitive Closure. procedure transitive closure (MR : zero-one n × n matrix) A := MR B = A for i:= 2 to n A := A OMR B:= B VA return B{B is the zero-one matrix for R*}
25. Use Algorithm 1 to find the transitive closures of these relations on {1, 2, 3, 4]. a) {(1, 2), (2, 1), (2, 3), (3, 4), (4,1)}
Transcribed Image Text:25. Use Algorithm 1 to find the transitive closures of these relations on {1, 2, 3, 4]. a) {(1, 2), (2, 1), (2, 3), (3, 4), (4,1)}
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