What is a foreign key? Why are foreign keys used or required in a relational database? Are

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What is a foreign key? Why are foreign keys used or required in a relational database? Are duplicate foreign key values allowed? Why or why not?

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Systems analysis and design in a changing world

ISBN: 978-1423902287

5th edition

Authors: John W. Satzinger, Robert B. Jackson, Stephen D. Burd

Question Posted: Dec 27, 2012 05:10 AM

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What is a foreign key? Why are foreign keys used or required in a relational database? Are

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A foreign key is a field value or set of values stored in one table that also exists as a ...View the full answer

Systems analysis and design in a changing world

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