Database Systems: Design, Implementation, & Management
Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 5, Problem 1P

Explanation of Solution

Crow’s Foot ER diagram for Two-Bit Drilling Company:

The following data model shows the solution for the given question.

Explanation:

  • In the above data model, “Employee”, “Dependent” and “Inspector” are the entities. The “Employee” is the supertype and “Inspector” is the one and only subtype of the “Employee” table...

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