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This encompasses the narratives, flowcharts, diagrams, and other written materials that explain how a system works. The information covers the who, what, when, where, why and how of data entry, processing, storage, information output, and system controls.
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Documentation
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A written step-by-step explanation of system components and interactions.
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Narrative description
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A graphical description of data sources, flows, processes, storage, and destinations.
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Data flow diagram (DFD)
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Entries that send or receive data that the system uses or produces.
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Data source
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Entries that send or receive data that the system uses or produces.
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Data destination
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This is the movement of data among processes, stores, sources and destinations.
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Data flow
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These represent the transformation of data.
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Process
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This is a repository of data.
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Data store
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The highest-level DFD is referred to as this because it provides the reader with a summary-level view of a system.
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Context diagram
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Is an analytical technique used to describe some aspect of an information system in a clear, concise, and logical manner.
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Flowchart
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This illustrates the flow of documents and information among areas of responsibility within an organization.
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Document flowchart
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Document flowcharts that describe and evaluate internal controls are often referred to as these.
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Internal control flowchart
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These depict the relationships among system input, processing, and output.
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System flowchart
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This illustrates the sequence of logical operations performed by a company executing a program.
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Program flowchart
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A DFD is a representation of which of the following?
a) relationship among modules, data, and programs of an AIS b) flow of data in an organization c) decision rules in a computer program d) computer hardware configuration |
B) flow of data in an organization
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