System Analysis and Design
A square symbols

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

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System Analysis and Design
A system design is said to be functionally modular if

None of these
the system makes extensive use of function. keys for maximum user assistance
each module performs a specific function and can be developed relatively independently by programmers
the system is able to handle all the function of the application
the system is developed using structured programming through COBOL or PASCAL

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