Modern Systems Analysis and Design.

 Modern Systems Analysis and Design.

Analysis and Design

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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

System design. 2. System analysis. I. George, Joey F. II. Hoffer, Jeffrey A. III. Title.

QA76.9.S88V345 2011 003—dc22

2011008298

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,

and support.

—Joe

To Karen, Evan, and Caitlin.

—Joey

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.

—Jeff

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

vii

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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

Systems 6

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

Phase 1: Systems Planning and Selection 14

Phase 2: Systems Analysis 14

Phase 3: Systems Design 15

Phase 4: Systems Implementation and Operation 15

Alternative Approaches to Development 18

Prototyping 18
The post Modern Systems Analysis and Design.

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