System Analysis and Design
A square symbols

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

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System Analysis and Design
Which of the following is not true of the conversion phase of the development life cycle?

the non machine components of the system should be considered
documentation should be emphasized
steps must be taken to phase out the old system
the user and systems personnel must work closely together

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System Analysis and Design
Cost-Benefit analysis

estimates the hardware and software costs
evaluates the tangible and non-tangible factors
All of these
compares the cost, with the benefits, of introducing a computer-based system
None of these

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