Yourdon DeMarco DFD Example: Video Rental Shop Context Diagram

The best way to understand Yourdon DeMarco DFD is to look at some examples of Yourdon DeMarco DFD and start drawing your own. You can now modify the Yourdon DeMarco DFD example below using Visual Paradigm's online Yourdon DeMarco DFD tool.

What is a DFD?

A data-flow diagram (DFD) is a way of representing a flow of a data of a process or a system that aims to be accessible to computer specialist and non-specialist users alike. The DFD also provides information about the outputs and inputs of each entity and the process itself. A data-flow diagram has no control flow, there are no decision rules and no loops. Specific operations based on the data can be represented by a flowchart.

How to draw a Yourdon DeMarco DFD?

You can use Visual Paradigm's easy online Yourdon DeMarco DFD tool to create Yourdon DeMarco DFD. To do this:

  1. Create a blank Yourdon DeMarco DFD.
  2. The symbols available are placed on the left of the Yourdon DeMarco DFD editor, under the palette. Drag and drop the Yourdon DeMarco DFD shapes you need onto the diagram and connect them with connectors.
  3. Save your finished work (File > Save as) to our cloud repository for future access, or to export your diagram as image (JPG, PNG, PDF, SVG, etc) and share it with your co-workers.

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