System Analysis and Design
The systems conversion technique of totally removing the existing system and immediately implementing the new system is called a

pilot conversion
parallel run
None of these
crash conversion
phased conversion

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System Analysis and Design
A square symbols

defines a source or destination of system data
identifies data flow
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

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