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   ► KBRole-Based T...Analysis & UMLTraditional ...Data Flow Di...   Print This     
  From the October 2015 Issue of Prestwood eMag
 
Analyst Data Flow Diagrams (DFD):
Data Flow Diagram (DFD)
 
Posted 12 years ago on 2/26/2008 and updated 7/1/2008
Take Away: DFDs document a process by documenting the flow of data throughout the process. They depict how data interacts with a system. They can be used to engineer a new process, document an existing process, or re-engineer an existing process. Traditional Data Flow Diagrams use four (4) symbols, a square, an arrow, a circle, and parallel lines.
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Data Flow Diagram (DFD) - DFDs document a process by documenting the flow of data throughout the process. They depict how data interacts with a system. They can be used to engineer a new process, document an existing process, or re-engineer an existing process. Traditional Data Flow Diagrams use four (4) symbols, a square, an arrow, a circle, and parallel lines.

DFDs document a process by documenting the flow of data throughout the process. They depict how data interacts with a system. They can be used to engineer a new process, document an existing process, or re-engineer an existing process. Traditional Data Flow Diagrams use four (4) symbols, a square, an arrow, a circle, and parallel lines.

DFDs are also known as Data Flow Graphs, Bubble Charts, Petri Networks, Yourdon/DeMarco notation, and Gane/Sarson notation.


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Definition Contributed By Mike Prestwood:

Mike Prestwood is a drummer, an author, and creator of the PrestwoodBoards online community. He is the President & CEO of Prestwood IT Solutions. Prestwood IT provides Coding, Website, and Computer Tech services. Mike has authored 6 computer books and over 1,200 articles. As a drummer, he maintains play-drums.com and has authored 3 drum books. If you have a project you wish to discuss with Mike, you can send him a private message through his PrestwoodBoards home page or call him 9AM to 4PM PST at 916-726-5675 x205.

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