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

None of these
All of these
multi processing
parallel run
multitasking

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System Analysis and Design
An open rectangle

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

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