Answered: Consider the relations R(A, B, C) and…

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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Question

Consider the relations R(A, B, C) and S(B, C, D) and the following SQL queries.
1. Select distinct * from R, S;
II. Select distinct * from R, S where R.C = S.C;
IIl. Select distinct from R, S where R.C = S.C and R. B = S.B;
IV. Select distinct * from R, S where R.C! = S.C;
Match the following Table where the first column refers to the four given SQL queries

A. i -d, ii - a, iii c, iv - b
B. i - b, iia, iii - d, iv - c
C. i - d, iia, iii- b, iv - c
D. i - c, iia, iii - b, iv - d
܀
i.
a.
ii. b.
iii. C.
iv. d.
Equi Join
Natural Join
Theta Join
Cross Product

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