1. Systems Analysis and Design
Alan Dennis and Barbara Haley Wixom John Wiley & Sons, Inc.
Slides by Fred Niederman
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2. Copyright © 2000 John Wiley & Sons, Inc.
All rights reserved. Reproduction or translation of this work beyond that permitted in Section 117 of the 1976 United States Copyright Act without the express written permission of the copyright owner is unlawful.
Request for further information should be addressed to the Permissions Department, John Wiley & Sons, Inc.
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The Publisher assumes no responsibility for errors, omissions, or damages, caused by the use of these programs or from the use of the information contained herein.
PowerPoint Presentation for Dennis & Haley Wixom, Systems Analysis and Design
Copyright 2000 © John Wiley & Sons, Inc. All rights reserved.

3. Introduction
Chapter 1
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4. Key Ideas
Many failed systems were abandoned because analysts tried to build wonderful systems without understanding the organization.
The primarily goal is to create value for the organization.
PowerPoint Presentation for Dennis & Haley Wixom, Systems Analysis and Design
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5. Key Ideas
The systems analyst is a key person analyzing the business, identifying opportunities for improvement, and designing information systems to implement these ideas.
It is important to understand and develop through practice the skills needed to successfully design and implement new information systems.
PowerPoint Presentation for Dennis & Haley Wixom, Systems Analysis and Design
Copyright 2000 © John Wiley & Sons, Inc. All rights reserved.

6. THE SYSTEMS DEVELOPMENT LIFE CYCLE
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7. Major Attributes of the Lifecycle
The project --
Moves systematically through phases where each phase has a standard set of outputs
Produces project deliverables
Uses deliverables in implementation
Results in actual information system
Uses gradual refinement
PowerPoint Presentation for Dennis & Haley Wixom, Systems Analysis and Design
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8. Project Phases Planning (Why build the system?)
Analysis (Who, what when, where will the system be?)
Design (How will the system work?)
Implementation (System delivery)
PowerPoint Presentation for Dennis & Haley Wixom, Systems Analysis and Design
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9. A “Simple” Process for Making Lunch
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10. Planning Identifying business value Analyze feasibility
Develop work plan
Staff the project
Control and direct project
PowerPoint Presentation for Dennis & Haley Wixom, Systems Analysis and Design
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11. Analysis Analysis Information gathering Process modeling Data modeling
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12. Design Physical design Architectural design Interface design
Database and file design
Program design
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13. Implementation Construction Installation
PowerPoint Presentation for Dennis & Haley Wixom, Systems Analysis and Design
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14. Processes and Deliverables
Product
Planning
Analysis
Design
Implementation
Project Plan
System Proposal
System
Specification
New System and
Maintenance Plan
PowerPoint Presentation for Dennis & Haley Wixom, Systems Analysis and Design
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15. SYSTEM DEVELOPMENT METHODOLOGIES
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16. What Is a Methodology? A formalized approach or series of steps
Examples
Process-Centered
Data-Centered
Object-Oriented
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17. Waterfall Development Method
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18. Pros and Cons of the Waterfall Method
Identifies systems
requirements long
before programming
begins
Design must be
specified on paper
before programming
begins
Long time between
system proposal and
delivery of new
system
PowerPoint Presentation for Dennis & Haley Wixom, Systems Analysis and Design
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19. Alternatives to the SDLC
Parallel Development
Rapid Application Development (RAD)
Phased Development
Prototyping
Spiral Development
Packaged Systems
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20. Parallel Development Method
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21. Pros and Cons of Parallel Development
Reduces Scheduled
Time
Still Uses Paper
Documents
Less Chance of
Rework
Sub-projects May Be
Difficult to Integrate
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22. Rapid Application Development
CASE tools
JAD sessions
Fourth generation/visualization programming languages
Code generators
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23. Three RAD Categories Phased development Prototyping
A series of versions
Prototyping
System prototyping
Throw-away prototyping
Design prototyping
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24. How Prototyping Works
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25. Throwaway Prototyping
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26. Criteria for Selecting the Appropriate Methodology
Clear user requirements
Familiar technology
Complexity
Reliability
Time schedule
Schedule visibility
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27. TEAM ROLES AND SKILLS
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28. Information Systems Roles
Business analyst
System analyst
Infrastructure analyst
Change management analyst
Project manager
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29. Summary
The Systems Development Lifecycle consists of four stages: Planning, Analysis, Design, and Implementation
There are five major development methodologies: the waterfall method, the parallel development method, the phased development method, system prototyping and design prototyping.
There are five major team roles: business analyst, systems analyst, infrastructure analyst, change management analyst and project manager.
PowerPoint Presentation for Dennis & Haley Wixom, Systems Analysis and Design
Copyright 2000 © John Wiley & Sons, Inc. All rights reserved.