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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discrete structure

Transcribed Image Text:Consider the relation R3 on P({0, 1, 2, 3}) such that (A, B) E R3 if and
only if the sum of elements in A is equal to the sum of elements in B and if A and B
are nonempty then the largest element in A equals the largest element in B. (That is,
R3 = Rị n R2 from question 1.)
Select all that are true:
O a) R3 is reflexive
O b) R3 is symmetric
c) R3 is transitive
d) R3 is an equivalence relation

Transcribed Image Text:Question 2 (1 point)
Consider the relation R5 on P({0, 1, 2, 3}) such that (A, B) E R5 if and
only if |A| = |B|.
Select all that are true:
a) R5 is reflexive
b) R5 is symmetric
c) R5 is transitive
O d) R5 is an equivalence relation
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