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

multitasking
multi processing
None of these
All of these
parallel run

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System Analysis and Design
An open rectangle

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

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