Online references for studying data flow diagrams. Provided in this page are simple examples of data flow diagrams that you can print out and use as your guidance in making your own diagram. This guide provides information you need to know about data flow diagrams.
Data flow diagram provided above is the example of the creator set of the diagram. A data flow diagram 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 without going into great detail, which can later be elaborated. DFDs can also be used for the visualization of data processing (structured design) since it 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. Take a look at the other examples below.
The diagrams show how information enters and leaves the system, what changes the information and where information is stored. You can use this diagram to show the scope and boundaries of a system as a whole. A process receives input data and produces output with a different content or form. A rounded rectangle represents a process. Processes are given IDs for easy referencing. Straight lines with incoming arrows are input data flow. Straight lines with outgoing arrows are output data flows.
Use these examples to get started right away! Learn more about the other educational diagrams by browsing through our categories or looking it up on the search column!