System Analysis and Design
Which of the following is not a part of a Data Flow Diagram?

None of these
arrow
Data store
process represented by a bubble circle (circle)
disk storage

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System Analysis and Design
The black-box concept:

is invoked by describing a system in terms of inputs and outputs, leaving the transformation process a black box.
None of these
All of these
assumes that inputs and outputs will remain stable
assumes that the black box is independent

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System Analysis and Design
Top-down programming is

a series or group of components that perform one or more operations of a more complex system
an approach in which the top module is first tested then program modules are added from the highest level to the lowest level
a map of the programmer's view of the data
a group of related fields

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