1. IS Theories & Practices
CSUN Information Systems
IS Theories & Practices
Systems
Architecture
& Infrastructure
IS 655: Note 4

2. Modified Zachman Framework
No additional notes.

3. Systems Development Process
Scope Definition Phase: What Business Problem
Problem Analysis Phase: What System Issues (Info/Data, Processes, Communications/Interfaces)
Requirement Analysis Phase: What User Needs
Logical Design: Conceptual Model – What to Do
Decision Analysis Phase: What Solution
Design Phase: Physical Model: How to Do
Construction Phase: Do It
Implementation Phase: Use It

4. Problem Statement

5. System Improvement Objectives
No additional notes

6. SoundStage System Context
Teaching Notes
Emphasize that a context DFD does not have to show every net data flow. For most systems, that would overwhelm the reader. Trivial or less common flows can be omitted until later diagrams, and composite data flows can be created to combine multiple flows. As a result, and in the strictest sense, not all primitive data flows may “balance” up to the context DFD, but we sacrifice that balancing to improve readability and validation. All data flows on the context DFD will balance down to the lower-level DFDs (although composite data flows will be replaced by their separate component data flows).

7. Soundstage Process Model
Teaching Notes
It is important to recognize that not all events require a primitive DFD to be drawn. This is especially true of most report-writing and inquiry response event processes. Drawing detailed DFDs for such processes is usually little more than “busy work.”

8. SoundStage Data Model
Edit this slide as needed to ensure readability.

9. Candidate Systems Matrix
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10. Candidate Systems Matrix…
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11. Feasibility Matrix
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12. Costs for Proposed Systems Solution
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13. Net Present Value Analysis
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14. Payback Analysis
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15. Project Scheduling