Describe the relationship between columns that can be null and entity subtypes. Under what circumstances would these

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Describe the relationship between columns that can be null and entity subtypes. Under what circumstances would these columns lead to more than one entity subtype?

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Concepts of Database Management

ISBN: 978-111182591

7th edition

Authors: Philip J. Pratt, Joseph J. Adamski

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Question Posted: Nov 28, 2015 07:43 AM

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Describe the relationship between columns that can be null and entity subtypes. Under what circumstances would these

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One way to treat a column that can be null is to remove it and ...View the full answer

Concepts of Database Management

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