Answer
Under what circumstances can a relation have duplicate rows?
Sometimes, when using a DBMS to manipulate a relation, it is possible to end up with duplicate rows.
Work Step by Step
N/A
Database Concepts
by Kroenke, David; Auer, David;
Published by
Pearson
ISBN 10:
0133544621
ISBN 13:
978-0-13354-462-6
Chapter 2 - The Relational Model - Review Questions - Page 107: 2.9
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