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Analysis and Design
Functional Modeling
At the end of this chapter you will be able to know about functional modeling
of system. You will also be able to know about the design elements of the system.
Functional Requirements
Design elements
Modules
Processes
Input(s) and Output(s)
Design of Databases
Interfaces
Functional Modeling
Techniques
Data Flow Diagrams
Elements of Data Flow Diagrams
- Processes, External Entities, Data Flow, Data Stores
An Example of a DFD for a System
That Pays Workers
Conventions used when
drawing DFD's
DFD Example - General model of publisher's
present ordering system
Data Dictionary
The procedure for producing a data
flow diagram
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