Introduction To Oracle9i: Advanced SQL Page iii Table of Contents SECTION 1 ....................................................................................................................................................1 COURSE INTRODUCTION .......................................................................................................................1 A BOUT T HIS C OURSE .......................................................................................................................................2 Objectives Of This Course.................................................................................................................................2 Target Audience.................................................................................................................................................2 Course Prerequisites...........................................................................................................................................2 Certification Examination..................................................................................................................................2 Instructor Notes..................................................................................................................................................3 A BOUT A PPLICATION D EVELOPMENT & D ATA M ODELING ..............................................................................4 Application Development Stages.......................................................................................................................4 Understanding A Data Model.....................................................................................................................6 About Data Models ............................................................................................................................................6 Entity & Attribute Symbols ...............................................................................................................................6 Relationship Symbols ........................................................................................................................................7 Data Model Terms Explained .....................................................................................................................8 What Are Entities?.............................................................................................................................................8 What Are Attributes? .........................................................................................................................................8 What Are Relationships? ...................................................................................................................................8 What Is The Relationship Cardinality? ..............................................................................................................8