System Analysis and Design
The reservation system of Indian railways is an example of

None of these
expert system
transaction processing system
management controls system
Interactive decision support system

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

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

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