Find (i) the intersection of r and s (rs) (ii) the union of r and s (r Us) (iii) the difference between r and s (r - s).

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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Given the following relations:
A
B
C
3
9
8
14
5
8
7
12
r
E
0
В
8
S
A
α
В
Y
8
Find (i) the intersection of r and s (rs)
(ii) the union of r and s (r Us)
(iii) the difference between r and s (rs).
B
4
5
6
7
C
6
8
10
12
Transcribed Image Text:Given the following relations: A B C 3 9 8 14 5 8 7 12 r E 0 В 8 S A α В Y 8 Find (i) the intersection of r and s (rs) (ii) the union of r and s (r Us) (iii) the difference between r and s (rs). B 4 5 6 7 C 6 8 10 12
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