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)

5.4 Process View

The process view depicts those activities that an IT system passes through when it exchanges messages with other IT systems. Purely technical processes that are necessary for communication between IT systems, such as dial-up or other connection to the Internet, are not the subject of the process view of our model.


Try to answer the following questions:

  • Which activities are we concerned with in the process view? Which interactions exist in our case study between the passenger services system and other IT systems?

  • Are these activities only interesting for system integration?

  • Have these activities already been described anywhere?

5.4.1 The Business System Model as Foundation

The exchange of messages between IT systems occurs on the basis of business events. Therefore, the exchange of messages is an activity of a subordinate business process.

In the business system model from our case study, the IT system that needs to be integrated is located within the business system passenger...