Figure 4-23 shows a first draft of modeling the situation where a publishing company wants to keep information about authors and books. Consider the possible optionalities at each end of the relationship writes and so determine some possible definitions for a book and an author. writes Author Book Figure 4-23. Consider possible optionalities for authors writing books.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Consider possible optionalities for authors writing books.

Exercise 4-1.
Figure 4-23 shows a first draft of modeling the situation where a publishing company wants to keep
information about authors and books. Consider the possible optionalities at each end of the relationship
writes and so determine some possible definitions for a book and an author.
writes
Author
Book
Figure 4-23. Consider possible optionalities for authors writing books.
Transcribed Image Text:Exercise 4-1. Figure 4-23 shows a first draft of modeling the situation where a publishing company wants to keep information about authors and books. Consider the possible optionalities at each end of the relationship writes and so determine some possible definitions for a book and an author. writes Author Book Figure 4-23. Consider possible optionalities for authors writing books.
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