Exam 5: Data and Process Modeling

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In a data flow diagram (DFD),a spontaneous generation process is a process that has _____.

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When a data flow diagram (DFD)is exploded,the lower-level diagram is referred to as the parent diagram.

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If processes must be performed in a specific sequence,the information should be documented in the _____.

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Explain why an analyst may use a black box symbol.

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Define functional primitives and explain how they are used.

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What makes one system more complex than another is the number of components,the number of levels,and the degree of interaction among its processes,entities,data stores,and data flows.

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  -Among the symbols in the accompanying figure,a _____ receives input data and produces output that has a different content,form,or both. -Among the symbols in the accompanying figure,a _____ receives input data and produces output that has a different content,form,or both.

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The major benefit of _____ is that it gives a clear picture of current system functions before any modifications or improvements are made.

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In addition to the Gane and Sarson symbol set,another popular symbol set is the _____ symbol set.

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Many analysts follow _____,which means that they develop a physical model of the current system,a logical model of the current system,a logical model of the new system,and a physical model of the new system.

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In data flow diagrams (DFDs),a process resembles a _____,where the inputs,outputs,and general functions of the process are known,but the underlying details are not shown.

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In a data dictionary,any name other than the standard data element name is called a(n)_____.

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_____ maintains consistency among data flow diagrams (DFDs)by ensuring that input and output data flows align properly.

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In the systems design phase,a logical model is built that describes how the system will be constructed.

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In a data flow diagram (DFD),systems analysts call an entity that receives data from the system a source.

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In a data flow diagram (DFD),the Gane and Sarson symbol for an entity is a ____.

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In modular design,_____ is also called looping.

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A diverging data flow is a data flow in which the same data travels to two or more different locations.

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Decision trees show the logic structure in a _____.

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In a data dictionary,_____ refers to whether the data element contains numeric,alphabetic,or character values.

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