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UML Interaction Diagrams

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The UML includes interaction diagrams to illustrate how objects interact via messages. They are used for dynamic object modeling. There are two common types: sequence and communication interaction diagrams. This chapter introduces the notation—view it as a reference to skim through—while subsequent chapters focus on a more important question: What are key principles in OO design?
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Objectives

  • Provide a reference for frequently used UML interaction diagram notation—sequence and communication diagrams.

Introduction

The UML includes interaction diagrams to illustrate how objects interact via messages. They are used for dynamic object modeling. There are two common types: sequence and communication interaction diagrams. This chapter introduces the notation—view it as a reference to skim through—while subsequent chapters focus on a more important question: What are key principles in OO design?

In the following chapters, interaction diagrams are applied to help explain and demonstrate object design. Hence, it's useful to at least skim these examples before moving on.

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