You are welcome, @Eyad Mohammed Osama! Thank you for your kind words. Please don't be too hard on your professor, though. What didn't work for you may have worked well for another student. It can be very difficult to communicate challenging concepts. I have the advantage here, in that I have somewhat of a script, the ability to edit out mistakes, and the ability to do as many "takes" as necessary to get it "right." Thank you again -- and please remember, the future is abundant! Let's impact a BILLION people for the better!
Great question! To get the diagram shapes I wanted, I edited the code of a similar shape that draw.io provides. For example, I took the rounded rectangle shape from draw.io's "general" shapes area, put it on the canvas, and under the EXTRAS menu item, I selected EDIT DIAGRAM (make sure you have the shape selected, first). It will pop up a dialog box with the HTML. I copied the code to a text editor and although I'm not a coder, I was able to see things that looked like what I wanted to adjust. Then, I just played with the code--pasting it back into the diagram editing dialog box--until I found what worked. It didn't take too long; but, since I made this video, I switched to using Lucidchart.com. LucidChart.com is another free web-based, Google-linked, drawing site; but theyy have much better tools, including data flow diagramming shapes. They also have many more templates of other products (free) that you might find useful. I don't even mention draw.io to my students anymore. If you are really interested in the code for the PROCESS shape (with the horizontal line) in draw. io, it's listed below. You should be able to just paste it into the EDIT DIAGRAM dialog box. ==================================
![Data Flow Diagram EXAMPLE [How to Create Data Flow Diagrams]](http://i.ytimg.com/vi/ab1DZ6o7QBs/mqdefault.jpg)
![Data Flow Diagram EXAMPLE [How to Create Data Flow Diagrams]](/img/tr.png)
Thank you for this great video
Very well explained, better than what my professor has been (trying) to do for a whole semester
You are welcome, @Eyad Mohammed Osama! Thank you for your kind words. Please don't be too hard on your professor, though. What didn't work for you may have worked well for another student. It can be very difficult to communicate challenging concepts. I have the advantage here, in that I have somewhat of a script, the ability to edit out mistakes, and the ability to do as many "takes" as necessary to get it "right." Thank you again -- and please remember, the future is abundant! Let's impact a BILLION people for the better!
Can we use StarUML for Context diagram?
where did you get these symbols?
Great question! To get the diagram shapes I wanted, I edited the code of a similar shape that draw.io provides.
For example, I took the rounded rectangle shape from draw.io's "general" shapes area, put it on the canvas, and under the EXTRAS menu item, I selected EDIT DIAGRAM (make sure you have the shape selected, first). It will pop up a dialog box with the HTML. I copied the code to a text editor and although I'm not a coder, I was able to see things that looked like what I wanted to adjust. Then, I just played with the code--pasting it back into the diagram editing dialog box--until I found what worked.
It didn't take too long; but, since I made this video, I switched to using Lucidchart.com. LucidChart.com is another free web-based, Google-linked, drawing site; but theyy have much better tools, including data flow diagramming shapes. They also have many more templates of other products (free) that you might find useful. I don't even mention draw.io to my students anymore. If you are really interested in the code for the PROCESS shape (with the horizontal line) in draw. io, it's listed below. You should be able to just paste it into the EDIT DIAGRAM dialog box.
==================================
Here's the code to the data store (with the vertical line):