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System Design

In: Computers and Technology

Submitted By haneefchtr
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Requirements Analysis
Chapter 3

3-1

PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 4th Edition
Copyright 2009 © John Wiley & Sons, Inc. All rights reserved.

Key Definitions
The As-Is system is the current system and may or may not be computerized The To-Be system is the new system that is based on updated requirements The System Proposal is the key deliverable from the Analysis Phase
3-2

PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 4th Edition
Copyright 2009 © John Wiley & Sons, Inc. All rights reserved.

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Key Ideas

The goal of the analysis phase is to truly understand the requirements of the new system and develop a system proposal.

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3-3

PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 4th Edition
Copyright 2009 © John Wiley & Sons, Inc. All rights reserved.

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Systems and the Real World
A system that helps to understand the real-world situation

Makes comparisons Thinks about A real-world situation or problem 4

 System Analysis ******
Analysis Means breaking problem down into subproblems part.
Analysis an organization means to:
1) scan and investigate the organization.
2) to ask what current system do.
3) what is requirement they need from the new system. 5

Analysis: Process of understanding the organization, investigating and understandng its requirements as well as understanding the business rules. Goal: describe what needs to be done 3-6

PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 4th Edition
Copyright 2009 © John Wiley & Sons, Inc. All rights reserved.
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Problem Solving Model or Building Computerized IS

Main phases are
Data gathering
These focus on understanding
Problem redefinitionwhat the problem is about n Finding ideas…...

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