Exam 4: Documenting Information Systems

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Which of the following systems flowcharting guidelines is correct?

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C

Internal entities are included on both data flow diagrams (DFDs)and systems flowcharts.

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True

The following symbol represents a disk data store The following symbol represents a disk data store

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False

A(n)______________________________ is a graphical representation of a system showing the system's internal and external entities and flows of data into and out of those entities.

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In a data flow diagram (DFD),an external entity symbol portrays a source or a destination of data outside the system.

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In a physical data flow diagram (DFD),this is something within the system that transforms data.

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Data entering from outside a system is depicted on a data flow diagram (DFD)as coming from a(n)______________________________ entity.

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Bubbles are labelled with nouns in

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Data flow diagrams (DFDs)present a comprehensive picture of the management,operations,information systems and process controls embodied in business processes.

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A(n)______________________________ gives a complete picture of a system by combining physical and logical aspects of the system.

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Which data flow diagram (DFD)symbol is usually portrayed with an arrow?

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When two data flow diagrams (DFDs)have equivalent external data flows,we say that the two data flow diagrams are:

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A(n)______________________________ is any action being performed by an internal or external entity.

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In a physical data flow diagram (DFD),a bubble or circle could be used to specify each of the following except:

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On a systems flowchart,computer processing is represented by a:

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A(n)______________________________ is a data flow that leaves a bubble but does not go to any other bubble or data store.

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A symbol used in data flow diagrams (DFDs)to depict an entity or process within which incoming data flows are transformed into outgoing data flows is a(n):

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Information processing activities include:

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A context diagram is a top-level diagram of a system that depicts the system and all its activities as a single bubble.

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The advantage of a physical data flow diagram (DFD)versus a logical data flow diagram (DFD)is that we can concentrate on what activities a system is performing without having to specify how,where or by whom.

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