Conceptual Design Using the Entity-Relationship (ER) Model

11/19/98


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Table of Contents

Conceptual Design Using the Entity-Relationship (ER) Model

Overview of Database Design

ER Model Basics

ER Model Basics (Contd.)

ER Model Basics (Contd.)

Key Constraints

Translating ER Diagrams with Key Constraints

Participation Constraints

Participation Constraints in SQL

Weak Entities

Translating Weak Entity Sets

Conceptual Design Using the ER Model

Entity vs. Attribute

Entity vs. Attribute (Contd.)

Entity vs. Relationship

Binary vs. Ternary Relationships

Binary vs. Ternary Relationships (Contd.)

Binary vs. Ternary Relationships (Contd.)

Constraints Beyond the ER Model

Summary of Conceptual Design

Summary of ER (Contd.)

Summary of ER (Contd.)

 Author: Joe Hellerstein/Raghu Ramakrishnan

Email: cs186@po.eecs.berkeley.edu

Home Page: http://www-inst.eecs.berkeley.edu