Systems Development Environment
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Library of Congress Cataloging-in-Publication Data Valacich, Joseph S.
Essentials of systems analysis and design / Joseph S. Valacich, Joey F. George, Jeffrey A. Hoffer.—5th ed.
p. cm. Includes bibliographical references and index. ISBN-13: 978-0-13-706711-4 ISBN-10: 0-13-706711-9
1. System design. 2. System analysis. I. George, Joey F. II. Hoffer, Jeffrey A. III. Title.
QA76.9.S88V345 2011 003—dc22
10 9 8 7 6 5 4 3 2 1 ISBN 10: 0-13-706711-9 ISBN 13: 978-0-13-706711-4
Essentials of Systems Analysis and Design FIFTH EDITION
Joseph S. Valacich University of Arizona
Joey F. George Iowa State University
Jeffrey A. Hoffer University of Dayton
Boston Columbus Indianapolis New York San Francisco Upper Saddle River Amsterdam Cape Town Dubai London Madrid Milan Munich Paris Montreal Toronto
Delhi Mexico City Sa~o Paulo Sydney Hong Kong Seoul Singapore Taipei Tokyo
To Jackie, Jordan, and James, for your sacrifices, encouragement,
To Karen, Evan, and Caitlin.
To Patty, for her sacrifices, encouragement, and support.
To my students, for being receptive and critical, and for challenging me
to be a better teacher.
Brief Contents PART I FOUNDATIONS FOR SYSTEMS DEVELOPMENT 2
1 The Systems Development Environment 2 2 The Sources of Software 26 3 Managing the Information Systems Project 42
PART II SYSTEMS PLANNING AND SELECTION 82
4 Systems Planning and Selection 82
PART III SYSTEMS ANALYSIS 122
5 Determining System Requirements 122 6 Structuring System Requirements:
Process Modeling 152 7 Structuring System Requirements:
Conceptual Data Modeling 188
PART IV SYSTEMS DESIGN 232
8 Designing the Human Interface 232 9 Designing Databases 272
PART V SYSTEMS IMPLEMENTATION AND OPERATION 318
10 Systems Implementation and Operation 318
Appendix A Object-Oriented Analysis and Design 361 Appendix B Agile Methodologies 381
References 395 Glossary of Acronyms 401 Glossary of Terms 403 Index 409
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Contents Preface xix
PART I FOUNDATIONS FOR SYSTEMS DEVELOPMENT 2
Chapter 1 The Systems Development Environment 2 What Is Information Systems Analysis and Design? 4
Systems Analysis and Design: Core Concepts 4
Definition of a System and Its Parts 6
Important System Concepts 7
A Modern Approach to Systems Analysis and Design 10
Your Role in Systems Development 11
Developing Information Systems and the Systems Development Life Cycle 12
The post Systems Development Environment