You are the systems analyst for the Wee Willie Williams Widget Works (also known as Dub 5, which is a shortened version of 5 Ws). Dub 5 produces computer keyboard components.

It has been producing keyboards for more than 20 years and has recently signed an exclusive 10-year contract to provide the keyboards for all Dell personal computers. As the systems analyst, you have been assigned the task of developing a level 0 DFD for Dub 5’s order processing system. You have finished gathering all the information you need to develop the first-pass DFD and now want to complete the diagram.

Level 0 DFD for Dub 5:

Level 1 DFD for Dub 5:

Dub 5 Business Processing Diagram