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In chapter 3, we follow the traditional approach of concentrating on the database structures and constraints during conceptual database design. The design of application programs is typically covered in software engineering courses. this chapter also present the modeling concepts of the Entity-Relationship (ER) model, which is a popular high-level conceptual data model. | DATA B A sE SYSTEMS FOURTH EDITION ELMASRI NAVATHE Chapter 3 Data Modeling Using the Entity-Relationship ER Model PEARSON Addison Wesley Copyright 2004 Pearson Education Inc. Chapter Outline Example Database Application COMPANY ER Model Concepts - Entities and Attributes - Entity Types Value Sets and Key Attributes - Relationships and Relationship Types - Weak Entity Types - Roles and Attributes in Relationship Types ER Diagrams - Notation ER Diagram for COMPANY Schema Alternative Notations - UML class diagrams others Elmasri Navathe Fundamentals of Database Systems Fourth Edition Chapter 3-3 Copyright 2004 Pearson Education .
