The Systems Development Environment

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Essentials of Systems Analysis and Design

000200010270588738

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Essentials of Systems Analysis and Design, Fourth Edition, by Joseph S. Valacich, Joey F. George, and Jeffrey A. Hoffer. Published by Prentice Hall. Copyright © 2009 by Pearson Education, Inc.

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The Systems Development Environment

Chapter Objectives

After studying this chapter, you should be able to:
½ Define information systems analysis and

design. ½ Discuss the modern approach to systems analysis and design that combines both process and data views of systems. ½ Describe the role of the systems analyst in information systems development. ½ Describe three types of information systems: transaction processing systems,

management information systems, and decision support systems. ½ Describe the information systems development life cycle (SDLC). ½ List alternatives to the systems development life cycle, including a description of the role of computer-aided software engineering (CASE) tools in systems development.

000200010270588738

2
Essentials of Systems Analysis and Design, Fourth Edition, by Joseph S. Valacich, Joey F. George, and Jeffrey A. Hoffer. Published by Prentice Hall. Copyright © 2009 by Pearson Education, Inc.

Chapter Preview . . .

The key to success in business is the ability to
gather, organize, and interpret information. Systems analysis and design is a proven methodology that helps both large and small businesses reap the rewards of utilizing information to its full capacity. As a systems analyst, the person in the organization most involved with systems analysis and design, you will enjoy a rich career path that will enhance both your computer and interpersonal skills. The systems development life cycle (SDLC) is central to the development of an efficient information system. We will highlight four key SDLC steps: (1) planning and selection,

(2) analysis, (3) design, and (4) implementation and operation. Be aware that these steps may vary in each organization depending on its goals. The SDLC is illustrated in Figure 1-1. Each chapter of this book includes an updated version of the SDLC, highlighting which steps have been covered and which steps remain. This text requires that you have a general understanding of computer-based information systems as provided in an introductory information systems course. This chapter previews systems analysis and lays the groundwork for the rest of the book.

Phase 1: Systems Planning and Selection

Phase 4: Systems Implementation and Operation

SDLC
Phase 3: Systems Design

Phase 2: Systems Analysis

000200010270588738

FIGURE 1-1 The four steps of the systems development life cycle (SDLC): (1) Planning and Selection, (2) Analysis, (3) Design, and (4) Implementation and Operation.

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Essentials of Systems Analysis and Design, Fourth Edition, by Joseph S. Valacich, Joey F. George, and Jeffrey A. Hoffer. Published by Prentice Hall. Copyright © 2009 by Pearson Education, Inc.

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Part I

Foundations for Systems Development

What Is Information Systems Analysis and Design?
Information systems analysis and design
The process of developing and maintaining an information system.

NET SEARCH The number of new terms and words that appear each year that are related to information systems and new technologies is incredible. Visit http:/ /www.pearson highered.com/valacich to complete an exercise related to this topic.

Information systems analysis and design is a method used by companies ranging from IBM to PepsiCo to Sony to create and maintain information systems that perform basic business functions such as keeping track of customer names and addresses, processing orders, and paying employees. The main goal of systems analysis and design is to improve organizational systems, typically through applying software that can help employees accomplish key business tasks more easily and efficiently. As a systems analyst, you will be at the center of...
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