What can you say about the set B is equal if we know that: 1- (A U B)= A 2- (AN B)= A 3- (AN B)=

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
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What can you say about the set B is equal
if we know that:
1- (A U B)= A
2- (AN B)= A
3- (AN B)= ¢
4- (B – A) = Ā *
Transcribed Image Text:What can you say about the set B is equal if we know that: 1- (A U B)= A 2- (AN B)= A 3- (AN B)= ¢ 4- (B – A) = Ā *
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