System Analysis and Design
A square symbols

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

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System Analysis and Design
Cost-Benefit analysis

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

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