Database Systems: Design, Implementation & Management
Database Systems: Design, Implementation & Management
13th Edition
ISBN: 9781337670562
Author: Coronel
Publisher: Cengage
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Fundamentals of Managing Data
Data management is creating, organizing, storing and managing the data collected and created by any organization.Effective data management is a crucial part of today's world. Data management provides analytical information on the vast amount of data coll…
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Chapter 4, Problem 1P

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ER Diagram:

The following figure illustrates the Entity Relationship Diagram (ERD) for given business rules in Crow’s Foot notation:

Explanation:

  • The “ASSIGNMENT” entity is optional for the “PROJECT”, because it allows a user to create a new project without creating a new assignment...

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Chapter 4 Solutions

Database Systems: Design, Implementation & Management

Ch. 4 - Prob. 1RQCh. 4 - What is a strong (or identifying) relationship,...Ch. 4 - Prob. 4RQCh. 4 - Suppose you are working within the framework of...Ch. 4 - Prob. 6RQCh. 4 - Prob. 7RQCh. 4 - Discuss the difference between a composite key and...Ch. 4 - What two courses of action are available to a...Ch. 4 - What is a derived attribute? Give an example. What...Ch. 4 - Prob. 11RQ
Ch. 4 - Discuss two ways in which the 1:M relationship...Ch. 4 - Prob. 13RQCh. 4 - Prob. 14RQCh. 4 - Briefly, but precisely, explain the difference...Ch. 4 - What are multivalued attributes, and how can they...Ch. 4 - Prob. 17RQCh. 4 - Prob. 18RQCh. 4 - What two attributes must be contained in the...Ch. 4 - Describe precisely the composition of the...Ch. 4 - Prob. 21RQCh. 4 - Prob. 1PCh. 4 - Create a complete ERD in Crows Foot notation that...Ch. 4 - Prob. 4PCh. 4 - Prob. 5PCh. 4 - Prob. 6PCh. 4 - Prob. 7PCh. 4 - Prob. 8PCh. 4 - Prob. 9PCh. 4 - Prob. 10PCh. 4 - Prob. 11C
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