Exam 6: Structuring System Requirements: Process Modeling

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Data in motion, moving from one place in a system to another, best describes a:

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Because the system's data stores are conceptually inside the one process, no data stores appear on a context diagram.

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More than one data flow noun phrase can appear on a single arrow as long as all of the flows on the same arrow move together as one package.

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One of the primary purposes of a DFD is to represent time, giving a good indication of whether data flows occur constantly in real time, once a day, or once a year.

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For each of the following statements, answer "a" if the statement is a true data-flow diagramming rule, and answer "b" if the rule is false. -Data can move directly from an outside source to a data store.

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A supplier of auto parts to your company would be represented on a data-flow diagram as a:

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Which of the following is a true statement regarding a data store?

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Since data-flow diagrams concentrate on the movement of data between processes, these diagrams are often referred to as:

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The data a sink receives and often what data a source provides are fixed.

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Match each of the data-flow diagramming symbols with corresponding examples.(Answers may occur more than once.) -Calculating overtime pay

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The calculation of a student's grade is represented on a data-flow diagram as a data flow.

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On a data-flow diagram, an arrow represents an action, such as calculating an employee's pay.

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On a data-flow diagram, a rectangle with the right vertical line missing represents a:

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For each of the following statements, answer "a" if the statement is a true data-flow diagramming rule, and answer "b" if the rule is false. -A fork in a data flow means that exactly the same data go from a common location to two or more different processes, data stores, or sources/sinks.

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The process of discovering discrepancies between two or more sets of data-flow diagrams or discrepancies within a single DFD is referred to as:

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Structured analysis techniques, such as data-flow diagramming, can help companies avoid misunderstanding how existing systems will have to work with the new system and incorrect specifications for necessary data, forms, and reports.

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A data flow represents data in motion, moving from one place in the system to another.

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The calculation of an employee's salary would be represented on a data-flow diagram as a(n):

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The conservation of inputs and outputs to a data-flow diagram process when that process is decomposed to a lower level defines:

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Match each of the following terms with its description. -The process of discovering discrepancies between two or more sets of data-flow diagrams or discrepancies within a single DFD

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