Software Design 2e - DIM

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Software DesignDavid Budgen
Pearson Education LimitedEdinburgh GateHarlowEssex CM20 2JEEnglandand Associated Companies throughout the worldVisit us on the World Wide Web at:www.pearsoned.co.ukFirst published 1993Second edition 2003© Addison-Wesley Publishers Limited 1993© Pearson Education Limited 2003The right of David Budgen to be identified as the author of this work has been asserted byhim in accordance with the Copyright, Designs and Patents Act 1988.All rights reserved. No part of this publication may be reproduced, stored in aretrieval system, or transmitted in any form or by any means, electronic, mechanical,photocopying, recording or otherwise, without either the prior written permission of thepublisher or a licence permitting restricted copying in the United Kingdom issued by theCopyright Licensing Agency Ltd, 90 Tottenham Court Road, London W1T 4LP.The programs in this book have been included for their instructional value. They have beentested with care but are not guaranteed for any particular purpose. The publisher does notoffer any warranties or representations nor does it accept any liabilities with respect to theprograms.All trademarks used herein are the property of their respective owners. The use of anytrademark in this text does not vest in the author or publisher any trademark ownershiprights in such trademarks, nor does the use of such trademarks imply any affiliation withor endorsement of this book by such owners.ISBN 0 201 72219 4British Library Cataloguing-in-Publication DataA catalogue record for this book is available from the British LibraryLibrary of Congress Cataloging-in-Publication DataBudgen, D. (David)Software design / David Budgen.—2nd ed.p. cm.Includes bibliographical references and index.ISBN 0–201–72219–4 (alk. paper)1. Computer software—Development. I. Title.QA76.76.D47B83 2003005.1′2—dc21 200304185910 9 8 7 6 5 4 3 2 108 07 06 05 04 03Typeset in 10/12pt Sabon by 35Printed and bound in Great Britain by Biddles Ltd., Guildford and King’s LynnThe publisher’s policy is to use paper manufactured from sustainable forests.
Page 2 and 3: Software Design
Page 7 and 8: viContentsChapter 4 Design Qualitie
Page 9 and 10: viiiContentsChapter 16 Designing wi
Page 11 and 12: xPreface to the second editiondescr
Page 13 and 14: xiiPreface to the First EditionWhy
Page 15 and 16: xivPreface to the first editionto t
Page 17 and 18: xviPublisher’s AcknowledgementsWe
Page 20 and 21: chapter 13The Nature of the Design
Page 22 and 23: Design is just as important with so
Page 24 and 25: Initialobservations7More systematic
Page 26 and 27: development. However, it should als
Page 28 and 29: From this relatively simple case st
Page 30 and 31: nnWhere possible, the panels used i
Page 32 and 33: It might well be argued that while
Page 34 and 35: system being developed. Clearly, in
Page 36 and 37: case study, the outline plan on squ
Page 38 and 39: nnnWicked problems do not have an e
Page 40: on to Pittsburgh. Airline B is the
Page 43 and 44: 262.1 What is software?The software
Page 45 and 46: 28nChangeability. Software suffers
Page 47 and 48: 30The software design processFigure
Page 49 and 50: 32The software design processthat a
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38The software design processproces
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40The software design processform p
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42The software design processFigure
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44The software design process2.3 De
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463.1 A context for designDesign in
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48Design in the software developmen
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54A personal itchDesign in the soft
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60nthe associated role of requireme
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chapter 463Design Qualities4.1 The
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is virtually impossible to modify i
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measurable characteristic that can
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69Assessing design qualityFigure 4.
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nnnnreliabilityefficiencymaintainab
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Table 4.1The cognitive dimensions73
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system. The results of this study u
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nnnmodules are easy to replace;each
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Table 4.3The principal forms of coh
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Identifying attributes that are the
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Our study of the nature of the desi
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nTechnical design reviews can provi
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chapter 589Describing a Design Solu
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91Figure 5.1Example of a ‘physica
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term is used to describe ‘stakeho
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95Design viewpoints for softwareFig
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nnof mark-up languages such as HTML
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nnntextdiagramsmathematical express
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happens with pioneering ideas, it h
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I have termed ‘derived viewpoints
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1066.1 The need to share knowledgeT
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108Transferring design knowledge6.1
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110then briefly consider how the co
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112Transferring design knowledgethe
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114Transferring design knowledge6.2
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116mainTransferring design knowledg
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118Transferring design knowledgennn
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120Transferring design knowledgeOne
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1226.5 A unified interpretation?Tra
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124Transferring design knowledgeA s
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chapter 7127Some Design Representat
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Table 7.1The selection of black box
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131Black box notationsFigure 7.1A f
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133Black box notationsFigure 7.3mac
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135Black box notationsFigure 7.4A
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nattributes are classes of values t
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The ERD viewpointERDs are purely an
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7.2.4 The StatechartLike the STD th
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145Black box notationsFigure 7.13St
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7.2.5 The Jackson Structure Diagram
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149Black box notationsFigure 7.17 A
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153Figure 7.21The UML class notatio
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155Use case (title indicates the ac
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157cardrejectedprocesscardcard acce
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159White box notationsFigure 7.27A
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only the presence of the latter is
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In its most simple form, such a com
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NarrativeUser starts web browserUse
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If anything, pseudocode is used rat
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Many notations can be conveniently
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171Developing a diagramFigure 7.38E
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Stevens P. with Pooley R. (2000). U
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chapter 8175The Rationale for Metho
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provide a methodological analysis o
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179Figure 8.2nnSome properties of f
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ones that may be usefully supported
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183Figure 8.3The use of virtual mac
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In particular, the use of a design
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need to be recognized. Unfortunatel
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A somewhat different approach to cl
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Exercises1918.1 How would you class
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1949.1 The role of strategy in meth
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196Design processes and design stra
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212ExercisesDesign processes and de
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21410.1 Design by template and desi
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216Design patternspatterns for obje
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218Design patternsFigure 10.1A simp
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220Design patternsnnnnnnnnnnnName u
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222Design patternsFigure 10.3The pr
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224ClientRequesthandlerDesign patte
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226Design patternsout how to produc
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2281Design patternsRequirementsPatt
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230Design patternsThe patterns comm
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chapter 11233Stepwise Refinement11.
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2. The degree of modularity resulti
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compiler237lexical analysisFigure 1
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Further reading239Wirth N. (1971).
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24212.1 Black box to white box in s
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244well be to deliver a solution on
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246Incremental designpossible model
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248Incremental designnnthe roles, r
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250Incremental designFunctionalityT
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252Incremental designBusinessstudyF
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254Incremental designalthough it ma
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256ExercisesIncremental design12.1
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25813.1 Origins, development and ph
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260Structured systems analysis and
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288ExercisesStructured systems anal
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29014.1 Some background to JSPJacks
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292Jackson Structured Programming (
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chapter 15315Jackson System Develop
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317The JSD modelFigure 15.1Top-leve
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319Figure 15.3Generic form of ESD.t
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321Figure 15.6Process 1.The SSD for
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323The JSD processFigure 15.9 The J
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Entity analysis (the entity-action
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327The JSD processFigure 15.13The J
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329The JSD processFigure 15.14 The
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331The JSD processFigure 15.15 The
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333The JSD processFigure 15.16The c
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Information function step335From a
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The situation is analogous to that
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Exercises33915.1 Construct an ESD t
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34216.1 The ‘object concept’Des
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344Designing with objectsThe evolut
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346Designing with objectsFigure 16.
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348Designing with objectsFor the ob
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352 Executable units of code(subpro
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354A summary of the core concepts o
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356Designing with objectsnnnnnnnorg
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358Designing with objectsA rather l
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360Designing with objects16.2.1 Sur
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364closely at the representation pa
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366Designing with objectsAn empiric
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368Designing with objectsof a frame
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370Designing with objects16.3.2 Des
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372Designing with objectsDepartment
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376Designing with objects1. The obj
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378Designing with objectsdescribe a
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380Designing with objectsnnapproach
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382Designing with objectssequence d
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384Designing with objectsnnhow is t
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386step, it is those analysis-relat
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388Designing with objectsStep 7: De
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390Designing with objectsbehaviour,
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392indicate the degree of effort. A
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394Designing with objectsThe UP wor
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398Designing with objectsSimilarly,
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400Designing with objectswww.omg.or
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40217.1 The component conceptCompon
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404Component-based designmore than
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406Component-based designFigure 17.
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408Component-based designto address
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410Component-based designnto decomp
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412Component-based design4. Archite
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41417.3 Designing componentsCompone
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416Component-based designSourceInde
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418Component-based designwww.sei.ed
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42018.1 The case for rigourA formal
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422A formal approach to designmight
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424A formal approach to designFigur
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426A formal approach to design18.2.
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428 Table 18.1 Set operations used
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430A formal approach to designClear
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432InitResSystA formal approach to
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438A formal approach to designThis
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44018.2 Write simple Z specificatio
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44219.1 What is software now?Whithe
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444Whither software design?Figure 1
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446Whither software design?Figure 1
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448Whither software design?Another
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451BibliographyAbbott R.J. (1983).
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Buxton J. and McDermid J. (1992). H
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Guindon R. (1990). Designing the de
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Perry D.E. and Wolf A.L. (1992). Fo
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Ward P.T. and Mellor S.J. (1985). S
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462IndexCcall and return (architect
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464Indexgraphical user interface (G
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466Indexprogram design 290program i
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468WYIndexwalkthrough 81waterfall m
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