Carefully review and analyze the Level$-0$ DFD in Appendix A: the DFD illustrates $($automated$)$ Biketown Portlands bike rental process. This Level$-0$ DFD features $6$ processes with $3$ sources$/$sinks and $4$ data stores.

Create Structured English for all processes if you use$/$make business rules$/$assumptions$,$ state them clearly. Some processes in DFD may be written generally so that you must use your business process knowledge to prepare Structured English Some data elements in DFD may be described in generic terms on purpose and you can specify those using your knowledge of data and data modeling. Make $($business assumption$($s$))$ if you believe needed.

Appendix A Level$-0$ DFD