Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Given two relational schemas R(ABC) and S(ABC), let r(R) and s(s) be the relations (relation table or relation instance) corresponding to R and S respectively

image text in transcribedimage text in transcribedimage text in transcribedimage text in transcribed

Given two relational schemas R(ABC) and S(ABC), let r(R) and s(s) be the relations (relation table or relation instance) corresponding to R and S respectively as the following: R A B C ai Ci bi bg a3 C3 o S A B ai bi b2 a2 C2 Please indicate if the following statement is True or False, Table Rand S are union compatible. Please indicate if the following expression is True or False, R - (R - S) = RIS Please indicate if the following expression is True or False. R - (R-S) = S - (S R) Please match each relational operation with its corresponding result table. 1. a. Table R difference table S, R-S A C1 ai B bi b2 a2 C2 013 C3 2. b. Table S difference table R, S - R A B ai bi C 3. c. Table R Union table S, RUS A B a3 C3 4. d. Table R Intersect table S, RAS A B b2 02 C2 Given two relational schemas R(ABC) and S(ABC), let r(R) and s(S) be the relations (relation table or relation instance) corresponding to Rand S respectively as the following: R B ai C1 bi b2 a2 C2 S A a1 B bi C1 a3 C3 Please indicate if the following expression is True or False. RN S = (RUS) - ((R S) U (S R))

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image_2

Step: 3

blur-text-image_3

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Introduction To Data Mining

Authors: Pang Ning Tan, Michael Steinbach, Vipin Kumar

1st Edition

321321367, 978-0321321367

More Books

Students also viewed these Databases questions

Question

Sam ONeill the designated representative is gone today.

Answered: 1 week ago

Question

How do linear and nonlinear presentations differ? [LO-1]

Answered: 1 week ago