Data flow diagram is graphical representation of flow of data in information system - Program Writing

Q.  Data flow diagram is a graphical representation of flow of data in an information system.
- Published on 23 Jul 15

a. True
b. False

ANSWER: True

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    Discussion

  • Nirja Shah   -Posted on 16 Oct 15
    - A data flow diagram (DFD) is a graphical representation of the "flow" of data through an information system, modelling its process aspects.

    - It is often used as a preliminary step to create an overview of the system, which can later be elaborated.

    - DFDs can also be used for the visualization of data processing (structured design).

    - A DFD shows what kind of information will be input to and output from the system, where the data will come from and go to, and where the data will be stored.

    - It does not show information about the timing of process or information about whether processes will operate in sequence or in parallel.

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