Dfd notation - PowerPoint PPT Presentation

Functional Modeling

Functional Modeling. Joseph Valacich, Joey George and Jeff Hoffer, Essentials of System Analysis and Design , 4 th edition, Prentice Hall, 2009. Outline. Definition and construction of functional models Documenting functional models---Data flow diagram (DFD) Structuring and organizing DFDs.

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738 views • 44 slides

Function-oriented Design

Function-oriented Design. Design with functional units which transform inputs to outputs. Topics Covered. Data flow design Structural decomposition Detailed design. Natural Functional Systems. Some systems are naturally function-oriented

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1k views • 18 slides

DFD Examples

DFD Examples. or. or. DFD Notation. Data Flow : labeled arrow Sources and sinks of information/data (also called external entity). Process. or. Available data (data store). Example: Air line reservation. DFD Example 1: Payroll. DFD Example 2: Old Car Mart.

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260 views • 10 slides

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