System Analysis and Design
An open rectangle

defines a source or destination of system data
represents a process that transforms incoming data flow(s) into outgoing data flows
None of these
is a data store-data at rest, or a temporary repository of data
identifies data flow

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System Analysis and Design
Rapid prototyping proves the quality of a design by

having the system analyst present an overview of the design to users, programmers, and consultants
None of these
having a program simulate the real system
having a data flow diagram
both (a) and (b)

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System Analysis and Design
The Turnaround is

None of these
the elapsed time between the receipt of the input and the availability of the output
the key information of programming
a program statement that violates one or more rules of the language in which it is written
a group of related fields

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