System Analysis and Design
The four icons used in building Data Flow Diagram are

Flow, Process, Source/Destination, Store
None of these
Flow, Source, Store, Process
Flow, Process, Source, Store
Source, Process, Destination, Store

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

the system makes extensive use of function. keys for maximum user assistance
None of these
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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System Analysis and Design
In top down analyis and design

each succeeding phase is more detailed than the phase before it
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

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