What is a data flow diagram? A data flow diagram (DFD) maps out the flow of information for any process or system. It uses defined symbols like rectangles, circles and arrows, plus short text labels, to show data inputs, outputs, storage points and the routes between each destination.
Summary. That's all there is to it. You now have a simple process for generating diagrams in Visio from text files. It won't make the intellectual work of preparing content inventories or user flow specifications much easier, but it may buy you some time when it comes to rendering that information in a drawing application.
Process flowchart or PFD is also known as the system flow diagram or SFD. The main reason of using process flowchart is to show the relation between major parts of the system. Process flowchart or PFD does not include minor parts or components of the system like piping ratings or piping systems. In ...
The CS System Example. The data flow diagram is a hierarchy of diagram consist of: Context Diagram (conceptually level zero) The Level-1 DFD; And possible Level-2 DFD and further levels of functional decomposition depending on the complexity of your system