David Budgen - Software Design

Software Design

Richard LeBlanc

Seattle University, Washington, USA

This series covers all aspects of software engineering and software development. Books in the series include innovative reference books, research monographs, and textbooks at the undergraduate and graduate level. The series covers traditional subject matter, cutting-edge research, and current industry practice, such as agile software development methods and service-oriented architectures. We also welcome proposals for books that capture the latest results on the domains and conditions in which practices are most effective.

Introduction to Combinatorial Testing

D. Richard Kuhn, Raghu N. Kacker, Yu Lei

Software Test Attacks to Break Mobile and Embedded Devices

Jon Duncan Hagar

Software Essentials Design and Construction

Adair Dingle

Software Metrics A Rigorous and Practical Approach, Third Edition

Norman Fenton, James Bieman

Computer Games and Software Engineering

Kendra M. L. Cooper, Walt Scacchi

Evidence-Based Software Engineering and Systematic Reviews

Barbara Ann Kitchenham, David Budgen, Pearl Brereton

Engineering Modeling Languages Turning Domain Knowledge into Tools

Benoit Combemale, Robert France, Jean-Marc Jzquel, Bernhard Rumpe, James Steel, Didier Vojtisek

Speed, Data, and Ecosystems Excelling in a Software-Driven World

Jan Bosch

Introduction to Software Engineering, Second Edition

Ronald J. Leach

Software Design, Third Edition

David Budgen

For more information about this series, please visit: https://www.routledge.com/Chapman--HallCRC-Innovations-in-Software-Engineering-and-Software-Development/book-series/CHCRCINNSOFEN

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Third edition published 2021

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2021 Taylor & Francis Group, LLC

First edition published by Addison-Wesley 1993

Second edition published by Addison-Wesley 2003

CRC Press is an imprint of Taylor & Francis Group, LLC

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Library of Congress Cataloging-in-Publication Data

Names: Budgen, David, author.

Title: Software design : creating solutions for ill-structured problems / David Budgen.

Description: Third edition. | Boca Raton : CRC Press, 2021. | Series: Chapman &Hall/CRC innovations in software engineering | Includes bibliographical referencesand index.

Identifiers: LCCN 2020037195 (print) | LCCN 2020037196 (ebook) | ISBN 9781138196612(paperback) | ISBN 9780367676568 (hardcover) | ISBN 9781315300078 (ebook)

Subjects: LCSH: Computer softwareDevelopment.

Classification: LCC QA76.76.D47 B83 2021 (print) | LCC QA76.76.D47 (ebook) | DDC 005.1dc23

LC record available at https://lccn.loc.gov/2020037195

LC ebook record available at https://lccn.loc.gov/2020037196

ISBN: 9780367676568 (hbk)

ISBN: 9781138196612 (pbk)

ISBN: 9781315300078 (ebk)

Typeset in Computer Modern font

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To the late Jim Tomayko.

Historian, software engineer, teacher, sportsman, coach, aviator, author, family man, and an inspiring friend who had a huge heart for others, whatever their role in life.

Science is built up of facts as a house is built of stones, but an accumulation of facts is no more a science than a heap of stones is a house. Jules Henri Poincar (1854-1912)

When using this quotation to open the second edition of this book I observed that it is sometimes hard not to feel that our knowledge about how to design software might sometimes feel akin to having a heap of stones. We possess a collection of observations, techniques and experiences, but finding ways of putting them together to provide an organised corpus of knowledge about how to design software is something of a challenge. The first and second editions of this book have sought to gather, classify, categorise and interpret the available knowledge with the aim of providing some sort of structure that will help the reader to understand and use itand this one aims to do the same.

The ten years that elapsed between the first and second editions of this book saw the emergence of many new and sometimes radically different ideas about how we might go about designing software. The software designer's toolbox acquired concepts such as architecture and new forms of software technology such as software services; there was a move away from waterfall thinking with agile methods as well as with new forms of reuse through design patterns; and there was a greater standardisation of modelling forms with the Unified Modeling Language (UML).

In the (rather longer) period between the second edition and this one, although new ideas have continued to emerge, mostly they have been less radical in their scope. Perhaps this has been partly because software developers have also had to cope with significant changes in the context within which software design takes place. It is now increasingly the case that applications may well be developed by globally dispersed teams; make use of open source components; be in the form of product lines; need to operate within a global network of systems rather than in a purely local environment; and of course, increasingly need to cope with the possibility of malicious attacks. In addition, the growing availability of knowledge that is based upon empirical evidence is slowly giving us a better understanding of what works, when and why.

So, in order to keep the focus upon ideas about design, rather than being swamped with detail about software, this edition has been organised very differently to the previous two. In particular, the presentation of material about design has placed a much greater emphasis upon the role of design as related to the concept and characteristics of