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1.The data flow approach has four main advantages over the narrative explanation of the data movement. They are:

A. Freedom from committing to the technical implementation of the system too early

B. Further understanding of the interrelationships of systems and subsystems

C. Communicating current system knowledge to users through data flow diagrams

D. Analysis of the proposed system to determine if all the data and processes have been defined.

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Q: What are the four advantages of using a data flow approach over narrative explanations of data movement?
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