Consider the three DFDs in Figure $7-25.$ List three errors $($rule violations$)$ on these DFDs$.$

$4.$ Using the example of a retail clothing store in a mall, list relevant data flows, data stores,

processes, and sources$/$ sinks$.$ Observe several sales transactions. Draw a context diagram

and a level$-0$ diagram that represent the selling system at the store. Explain why you chose

certain elements as processes versus sources$/$sinks$.$

$5.$ Upload your file$($s$)$ using the assignment Project $1$ on Canvas.