Consider the following two tables R and S with their instances: R S B с E a XNXXBD V5 233 a b A b с y W y f h Write the results (table instances) of each of the following relational algebra queries: (i) TA (RB-D S) А (ii) TATA (RB-D S) А А Z y W k m XN J X D

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
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Relation algebra (Database)

Question 3.
Consider the following two tables R and S with their instances:
R
S
B
с
E
A
a
X
X
y
a
Z
Z
W
b
X
b
m
с
X
y
f
g
h
Write the results (table instances) of each of the following relational algebra queries:
TA (RB-D S)
TATA (R XB-D S)
y
W
k
J
D
(ii)
Transcribed Image Text:Question 3. Consider the following two tables R and S with their instances: R S B с E A a X X y a Z Z W b X b m с X y f g h Write the results (table instances) of each of the following relational algebra queries: TA (RB-D S) TATA (R XB-D S) y W k J D (ii)
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