Data Flow Diagram Model


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Data Flow Diagram (DFD) - data flow model

"A data flow diagram (DFD) is a graphical representation of the "flow" of data through an information system. It differs from the flowchart as it shows the data flow instead of the control flow of the program. A data flow diagram can also be used for the visualization of data processing (structured design). Data flow diagrams were invented by Larry Constantine, the original developer of structured design, based on Martin and Estrin's "data flow graph" model of computation.

It is common practice to draw a context-level Data flow diagram first which shows the interaction between the system and outside entities. The DFD is designed to show how a system is divided into smaller portions and to highlight the flow of data between those parts. This context-level Data flow diagram is then "exploded" to show more detail of the system being modeled" [Data model. Wikipedia]

Data-flow diagrams are an intuitive way of representing a data flow model that shows how data is processed by a system.

The DFD (Yourdon and Coad notation) example "Model of small traditional production enterprise" below was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Data Flow Diagrams solution from the Software Development area of ConceptDraw Solution Park.

Data Flow Diagram Model solution

Example 1. Data Flow Diagram Model solution

This example shows production process of a traditional small enterprise. DFD diagrams are a useful way of visualizing a system and analyzing what it will accomplish.

Example 2. DFD - Model of Small Traditional Production Enterprise

This example is created using ConceptDraw PRO enhanced with solution Data Flow Diagram Model.




Data Flow Diagrams Sample:







Use Product:

  • Data Flow Diagrams Software
  • UML Diagrams Software
  • Vector Drawing Tools
  • Cross Platform Compatibility
  • Presentation Mode
  • Over 2 000 vector stencils
  • Export to vector graphics files
  • ConceptDraw PRO native Mac app
  • Easier to use than Microsoft Visio® and more powerful
  • With free support and thousands of templates

Use Solution:

  • Graphical representation of the "flow" of data through an information system
  • Modeling process aspects
  • An overview of the system
  • For the visualization of data processing (structured design)
  • What kinds of information will be input to and output from the system
  • Where the data will come from and go to
  • Where the data will be stored


Compatibility: Apple® OS X 10.10 or later
Microsoft® Windows® 7/8.1/10

Price: ConceptDraw PRO US$199
 
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