System Analysis and Design
A square symbols

represents a process that transforms incoming data flow(s) into outgoing data flows
defines a source or destination of system data
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
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
steps must be taken to phase out the old system
the user and systems personnel must work closely together
documentation should be emphasized

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