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
a group of related fields
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

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System Analysis and Design
A system analyst designs a new system by

None of these
developing the system as a large, single unit
identifying sub systems and the interfaces between sub systems
propose alternatives to the current system
adopting a developed system to the present environment

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