Data Flow Diagram (DFD)

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Data flow diagrams (DFD)

The Data Flow Diagrams solution from the Software Development area of ConceptDraw Solution Park provides the DFD templates, examples and libraries of vector stencils for drawing the DFDs according to either Gane and Sarson or Yourdon and Coad notation using the ConceptDraw PRO diagramming and vector drawing software.

"It is common practice to draw the context-level data flow diagram first, which shows the interaction between the system and external agents which act as data sources and data sinks. This helps to create an accurate drawing on the context diagram. The system's interactions with the outside world are modelled purely in terms of data flows across the system boundary. The context diagram shows the entire system as a single process, and gives no clues as to its internal organization.
This context-level DFD is next "exploded", to produce a Level 1 DFD that shows some of the detail of the system being modeled. The Level 1 DFD shows how the system is divided into sub-systems (processes), each of which deals with one or more of the data flows to or from an external agent, and which together provide all of the functionality of the system as a whole. It also identifies internal data stores that must be present in order for the system to do its job, and shows the flow of data between the various parts of the system." [Data flow diagram. Wikipedia]

Example 1. Data Flow Diagram (DFD)

This example is created using ConceptDraw PRO enhanced with solution Data Flow Diagrams. This diagram shows one of the business processes to simplify and accelerate understanding, analysis, and representation.

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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