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Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482

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Chapter
Section
BuyFindarrow_forward

Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482
Chapter 9, Problem 10RQ
Textbook Problem
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What steps are required in the development of an ER diagram? (Hint: See Table 9.3.)

Explanation of Solution

Steps required in the development of an ER diagram:

The below are the eight steps that are required in the development of the ER diagram:

Step 1:

Business rules are identified, analyzed and refined.

Step 2:

Based on the results obtained from the step 1, the main entities can be obtained.

Step 3:

Based on the results obtained from the step 1 and 2, the relationships among the entities are obtained.

Step 4:

The attributes, primary keys and foreign key are defined for each of the entities...

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