Exam 4: Documenting Information Systems

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Data leaving for outside a system is depicted on a data flow diagram (DFD)as going to a(n)______________________________ entity.

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A data flow diagram (DFD)is a graphical representation of a system,which depicts the system's components,data flows and the sources,destinations and storage of data.

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A(n)______________________________ is the top-level,or least detailed,diagram of a system depicting the system and all its activities as a single bubble and showing the data flows into and out of the system and into and out of the external entities.

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External entities are persons,places,or things outside the context of the system.

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