System Analysis and Design
The term Parallel Run refers to

the concurrent operation of an existing system and a new system
the same job run on two different computer to test their speeds
All of these
the processing of two different jobs initiated from two terminals.
None of these

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System Analysis and Design
An open rectangle

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

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