System Analysis and Design
In top down analyis and design

each succeeding phase is more detailed than the phase before it
all of the listed here
each succeeding phase is less detailed than the phase before it
each succeeding phase is as detailed as the phase before it.

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System Analysis and Design
The term Parallel Run refers to

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

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