System Analysis and Design
Conversion method in which users, being used to an old system, continue to use the old system, alongside the new system, is

parallel run
multi processing
All of these
multitasking
None of these

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System Analysis and Design
In top down analyis and design

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

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