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

phased conversion
parallel run
pilot conversion
crash conversion
None of these

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System Analysis and Design
A square symbols

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

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