System Analysis and Design
System Study involves

All of the listed here
documenting the existing system.
study of an existing system
identifying current deficiencies and establishing new goals

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System Analysis and Design
A square symbols

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

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