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Database Systems: Design, Implemen...

13th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781337627900

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Chapter
Section
BuyFindarrow_forward

Database Systems: Design, Implemen...

13th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781337627900
Chapter 5, Problem 10RQ
Textbook Problem
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Is it possible for a book to appear in the BOOK table without appearing in the PRODUCT table? Why, or why not?

Program Plan Intro

Subtype:

  • Subtype is one type of entity which inherits the attributes from a different entity.
  • The subtype relationship is a grouping of entities type in single entity that shares the common attributes or relationships which are different from other grouping.
  • It is related to an entity supertype where the supertype entity has common characteristics and the subtype entity has the unique characteristics of each entity subtype.

Explanation of Solution

Reason:

No”, it is not possible for a book to appear in the “BOOK” table without appearing in the “PRODUCT” table.

  • The “PRODUCT” is the supertype and the “BOOK” is the subtype...

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