Foreword. Chapter 1 Introduction. Chapter 2 Setting Up Roles: What Parties Do. Chapter 3 Using Roles: How Parties Are Involved. Chapter 4 Hierarchies, Aggregations, and Peer–to–Peer Relationships: The Organization of Similar Data. Chapter 5 Types and Categories: the Classification of Data. Chapter 6 Status: The States of Data. Chapter 7 Contact Mechanisms: How to Get in Touch. Chapter 8 Business Rules: How Things Should Work. Chapter 9 Using the Patterns. Chapter 10 Socializing the Patterns. Index.