o2 3

Ch 3 Introduction to the Data Model

Introduction

3x. - 1 Historical View of the O2 Approach

2 Objects Versus Values in OODBs

3x. - 3 The O2 Data Model - Values and Objects - The Syntax of Types and Classes - Class Hierarchy and Subtyping - The Semantics of Types and Classes - Methods - Database Schema - Instances of a Database Schema - 4 Acknowledgements - 5 A Roadmap for Part 2 - References