MIS350-Module 6 Discussion: The context diagram is a critical element of a Data

Question

MIS350-Module 6 Discussion:

The context diagram is a critical element of a Data Flow Diagram (DFD). What happens if the DFD developer neglects to include a data flow in the context diagram? How might you discover the missing flow, and how would you correct the error?

Cite two to three pertinent scholarly or trade journal articles in support of your response regarding the DFD process. References must be cited following APA format, according to the CSU-Global Guide to Writing and APA Requirements.

Explanation / Answer

Answer:

Neglecting to include a data flow in the context diagram can cause a few problems. First, the developer may have insufficient information to create the process in code. They will not have the benefit of an easy to read diagram depicting the flow of data with the suggested details tied to each step. The DFD developer will need to replace the context diagram with lengthy narrative defining the process (Gane and Sarson, 1979). It is not an easy task to find and correct missing flows. I find it important to get stakeholder signoff on a process. Have them look over the flow and make note of any missing areas. This can help find the missing flow and also help further define the scope.

References

Gane, C., &Sarson, T. (1979). Structured systems analysis: Tools and techniques.Englewood Cliffs, NJ: Prentice-Hall, Inc.

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