April 2013
Intermediate to advanced
264 pages
7h 8m
English
Content preview from Concepts of Database Management System
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CHAPTER 4
Developing Entity-Relationship Diagram
CHAPTER OBJECTIVES
- Importance of Entity-Relationship diagram in database design.
- Understanding entities, and how to identify entity from a given problem.
- Understanding how entities can be related to each other.
- Knowing relationship types.
- Knowing participation of an entity into another entity.
- Representing entity and relationships by using notations.
- Modelling Entity-Relationship diagram.
- Converting Entity-Relationship diagram into Relational Model.
- Understanding object modelling.
- Identifying classes, subclasses, and superclasses.
- Drawing class diagrams.
- Comparison between E-R diagram and class diagram.
- Summary
4.1 INTRODUCTION
There are various semantic models, such as entity-relationship ...
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