data flow diagram

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data flow diagram

[′dad·ə ¦flō ‚dī·ə‚gram]
(computer science)
A chart that traces the movement of data in a computer system and shows how the data is to be processed, using circles to represent data. Also known as bubble chart; system flowchart.

Data Flow Diagram

(programming)
A graphical notation used to describe how data flows between processes in a system. Data flow diagrams are an important tool of most structured analysis techniques.

http://smartdraw.com/resources/centers/software/dfd.htm.

data flow diagram

A description of data and the manual and machine processing performed on the data as it moves and changes from one stage to the next. It also includes the locations where the data are placed in permanent storage (disk, tape, etc.).
References in periodicals archive ?
Another rule states that any relationship in the E-R model must be manifested, in some manner, in the data flow model.
There are, it seems, only a few ways for a relationship to be manifested in a data flow model.
If relationships in the E-R model are not represented in the data flow model, the rule checker will report this; we are then free to decide that the situation is acceptable or not, as the case may be.
Since we have been working with the data flow model, we first add the entity to an appropriate EDFD.
The difficult question is how to correlate state-transitions with the data flow model.
The highest layer of functions in the data flow model (those lying just below the wavy line in Figure 2) are mapped by the design generator to degenerate objects.
Including such information in the data flow model would increase the overlap between that model and the state-transition model.
Each SPE can run a different program, and the internal communications allows programmers to arrange the data flow in different ways using parallel, pipelined or streamed processing data flow models.
It incorporates an onboard 10GE switch to facilitate very flexible data flow models and enables powerful packet processing solutions needed for the next generation equipment.
Through strategic partnerships with leading ESL tool suppliers and the release of this significantly enhanced SonicsStudio, Sonics now provides chip architects the ability to define and model their SoC architecture using data flow models simulated using a range of supported RTL and SystemC simulators in a variety of environments.
SonicsStudio delivers the key data flow models chip architects need as well as a framework for software and hardware engineering teams to seamlessly collaborate on any given SoC project.
Programming with VIP is accomplished by drawing data flow models in the visual workplace along with placing and connecting nodes.