Book Image

UML 2.0 in Action: A project-based tutorial

Book Image

UML 2.0 in Action: A project-based tutorial

Overview of this book

Most books about UML describe it almost in its entirety. Inevitably you're left with only a superficial knowledge of the range of UML elements, without a deep and intuitive understanding of how to apply UML as a whole to real world design problems. This book doesn't set out to cover all of UML, but instead pulls together those parts of UML with immediate practical relevance and presents them as part of a coherent process for using UML in your actual development projects.This book is designed to be read while you work on a real project. After an initial review of the essentials of UML and the design process, it begins with the modeling of a business system and its business processes, in this case an airport. Then the IT system intended to serve that business process is described and analysed. Finally the integration of the system into the production environment is covered in detail. The book can be used in two ways: it can be read through as a thorough grounding in how UML really works in practice; in addition it can be used as stand alone guide to that particular aspect of your own project. Both result in an intuitive understanding of how to actually use UML.
Table of Contents (11 chapters)

2.1 Introduction to the Case Study


For our case study we have chosen an airport—the UML Airport. Anyone who has ever been on a flight will have no problems understanding our example.

We will restrict our example to those areas of the airport that passengers are in contact with during departure, meaning we will take a closer look at passenger check-in and boarding. Figure 2.1 illustrates how passenger services can be distinguished from other areas of the airport. It shows the various stages that passengers go through until they are seated in the airplane, buckled up, and the plane is ready to take off. Not all stages passengers go through are related to passenger services. The stages that belong to passenger services are framed and printed in italic font.

A sequence of steps like this is called a scenario. However, the depicted scenario is only one of many possible scenarios. The following exceptions are possible for passenger check-in and boarding:

  • The passenger only has carry-on luggage.

  • The...