Answer
(StudentNumber,SiblingName) is the candidate Key in this Relation.
Work Step by Step
Candidate Key uniquley identifies a row in a Relation so StudentNumber+SiblingName is the candidate Key.
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 - Exercises - Page 108: 2.40C
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