System Analysis and Design
The feasibilities studied in preliminary investigation is (are):

All of these
operational feasibility
economic feasibility
technical feasibility
None of these

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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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