To create a data flow diagram, you need to follow some basic steps. First, you need to define the scope and boundaries of your system or process, and identify the main entities that interact with it.

Learn how to create and update data flow diagrams (DFDs) for business systems analysis. Discover the symbols, meanings, conventions, and best practices of DFDs.

If you are not familiar with Visio, it's used for creating diagrams such as flow charts and network diagrams. What I didn't realize is that you can actually create Visio diagrams from within Excel.

In Google Drawings, the Insert menu is key to create a flowchart. Use it to insert flowchart shapes (as shown above), as well as text boxes and lines. How to create flowcharts and diagrams in G ...