a graphical representation of the functional model, showing dependencies between values and the computation of output values from input values without regard for when or if the functions are executed.
A graphical notation used to describe how data flows between processes in a system. They are a representation of the functional decomposition of a system.
(IEEE) A diagram that depicts data sources, data sinks, data storage, and processes performed on data as nodes, and logical flow of data as links between the nodes. Syn: data flowchart, data flow graph.
a flow diagram starting from a data, repeating data then function, and ends at data
a graphic representation of a system or portion of system
a network representation of a system that depicts
a process modelling tool that depicts flow of data through a system and processing work
A hierarchy of diagrams that show the flow of data with a system in greater and greater detail. Design.
A diagram using four (4) standardized symbols to represent flows of data between processes and sub-processes in a business.
The diagrams in the logical architecture view of the National ITS Architecture that show the functions that are required for ITS and the information that moves between these functions. Only four different symbols are used on the diagrams. Circles represent the processes or functions that do the work. Arrows represent the data flows that show how data moves through the system. Parallel lines represent data stores that represent "data at rest" in the system. Finally, rectangles represent the terminators that define the architecture boundary. A hierarchy of these diagrams depict the ITS functionality and data flow requirements in successively greater detail until "primitive" processes are defined. The data flow diagrams are directly viewable as GIF images and also available as editable WMF graphics. Select "Logical Architecture" from the main menu, then select a data flow diagram from the provided list. View a sample data flow diagram available for downloading in wmf format.
Diagram that shows the flow of data between the components of the system
In structured programming, a graphic representation of a system. Synonymous with data flow graph, data flow chart.
A diagram that shows the normal flow of data between services as well as the flow of data between data stores and services.
Visual representation of how data and people interact.
A modeling notation that represents a functional decomposition of a system.
An important technique for modeling high level detail in a process within a system. They highlight the functions of the system and how they use stored information and transfer information between each other.
mainly used in software engineering to represent the flow of control between the various components within a given application, detailing all decision points.
Tool that graphically shows the flow of data in a system. The key elements of a DFD are the data flows, the processes, the data stores, and the sources. 14.17, 14.28
A data flow diagram (DFD) is a graphical representation of the "flow" of data through an information system. A data flow diagram can also be used for the visualization of data processing (structured design). It is common practise for a designer to draw a context-level DFD first which shows the interaction between the system and outside entities.