System Analysis and Design
Top-down programming is

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

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System Analysis and Design
The approach used in top-down analysis and and design is

None of these
to identify the top level functions by combining many smaller components into a single entity.
All of these
to prepare flowcharts after programming has been completed
to identify a top level function and then create a hierarchy of lower level modules and components

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