Libreoffice Draw Data Flow Diagram. The icons are all the same, but it is better at handling the shapes than text - if you type something in text Data Science. The open-source LibreOffice Draw is one diagramming application that you can utilize for flowcharts.
Easily learn Data Flow Diagram (DFD) with this step-by-step DFD tutorial. To do this, click on an element whilst holding the Ctrl key pressed. A neat and clear DFD can depict a good amount of the system requirements graphically.
Draw lets you produce anything from a quick sketch to a complex plan, and gives you the means to communicate with graphics and diagrams.
Connectors are especially useful in drawing organization charts, flow diagrams, and mind-maps.
Draw's toolbar includes a Flowcharts button you can press to select shapes more specifically for flowchart diagrams. Connectors are especially useful in drawing organization charts, flow diagrams, and mind-maps. The author suggests you open the UML drawing and copy/paste elements from that into your own UML diagram.