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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

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.).
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References in periodicals archive ?
As explained in Section 2, our implementation of the AutSEC model is aimed at automating the widely used threat modeling [9] process of the Microsoft security development lifecycle (SDL), which uses data flow diagrams (DFDs) to represent the software architecture.
By this I mean that you've selected methods and tools that suit your needs for structured analysis and design, such as data flow diagrams, data dictionaries, and process specifications.
Cross-references (explosion paths) between all Processes, Sub-processes, Files and Data Flows depicted in the Data Flow Diagrams.
* Discussing that data flow diagram while proposing changes in the system for their project
MacA&D comes with six new 15-minute training videos that cover data flow diagrams, class models, data models, flowcharts, system models with simulation and requirements management.
It can also be adapted to cover top-down program design showing the tree structure of the various modular components using the functional decomposition of the data flow diagrams. A class discussion could include how these system components exchange data with minimal coupling and maximum cohesion.
It includes an object diagram, data flow diagrams and state-transition diagrams.
At a minimum, a context level data flow diagram gives students an insight into the scope and boundaries of the system, while developing their ability to represent their understanding of the system in a variety of different forms.
Leveled data flow diagrams (DFDs), which begin with a one-bubble context diagram as a parent, and proceed to sets of successively more detailed child diagrams.
For example, Whitten and Bentley (2007), used a data flow diagram to illustrate all the phases of the SDLC.
The context data flow diagram for this theater reservation system is given in Figure 1a.