System Analysis and Design
An open rectangle

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

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System Analysis and Design
A menu-driven system

is required only for on-line systems
presents options and allows the user to make selections
None of these
can be used only by computer professionals
increases the operator's work

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System Analysis and Design
The Turnaround is

None of these
a group of related fields
the key information of programming
the elapsed time between the receipt of the input and the availability of the output
a program statement that violates one or more rules of the language in which it is written

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