Ouline of the use and functions of DFD (data flow diagrams).
Data Flow Diagrams (DFDs)
When system analysts attempt to understand the information requirements of users, they must be able to conceptualize how data moves through the organization, the processes or transformations that the data undergoes, and what the outputs are. Through a structured analysis technique called data flow diagrams (DFDs), the systems analyst can put together a graphical representation of data processes throughout the organization. The data flow approach emphasizes the logic underlying the system. By using combinations of only four symbols, the systems anal…
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- Ouline of the use and functions of DFD (data flow diagrams).
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