Software Design Center

HOW TO DRAW DATA FLOW DIAGRAMS (cont'd)

DFD levels
The first level DFD shows the main processes within the system. Each of these processes can be broken into further processes until you reach pseudocode.

Drawing Nested DFDs in SmartDraw
You can easily nest data flow diagrams in SmartDraw. Draw the high-level diagrams first, then select the process you want to expand, go to the Tools menu, and select Insert Hyperlink. Link the selected process notation to another SmartDraw diagram or a web page.

Once linked, a small plus sign will appear in the object, and clicking on it opens the linked file.