January 2012
Intermediate to advanced
587 pages
19h 47m
English
Content preview from System Analysis and Design, Fifth Edition
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CHAPTER 5
PROCESS MODELING
A process model describes business processes—the activities that people do. Process models are developed for the as-is system and/or the to-be system. This chapter describes data flow diagramming, one of the most commonly used process modeling techniques.
OBJECTIVES
- Explain the rules and style guidelines for data flow diagrams.
- Describe the process used to create data flow diagrams.
- Create data flow diagrams.
CHAPTER OUTLINE
Introduction
Data Flow Diagrams
- Reading Data Flow Diagrams
- Elements of Data Flow Diagrams
- Using Data Flow Diagrams to Define Business Processes
- Process Descriptions
Creating Data Flow Diagrams
- Creating the Context Diagram
- Creating Data Flow Diagram Fragments
- Creating the Level 0 Data Flow Diagram
- Creating Level 1 Data Flow Diagrams (and Below)
- Validating Data Flow Diagrams
Applying the Concepts at Tune Source
- Creating the Context Diagram
- Creating Data Flow Diagram Fragments
- Creating the Level 0 Data Flow Diagram
- Creating Level 1 Data Flow Diagrams (and Below)
- Validating Data Flow Diagrams
Summary
INTRODUCTION
Chapters 3 and 4 discussed several requirements elicitation activities, such as interviewing and JAD, and how to clarify those requirements by developing more detailed use cases. In this chapter, we discuss how the requirements definition and use cases may be further clarified through a process model. You may have heard ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.