System Analysis and Design
Main characteristic of "ring", in Data structure, is

Many records point to one record
Each record points to all other records
First record points only to the last record
Last record points to the first record

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System Analysis and Design
Most algorithms follow the format of

Entering the output items, then displaying the output items, and then processing the output items
Entering the output items, then processing the output items, and then displaying the output items
Entering the input items, then processing the output items, and then displaying the output items
Entering the input items, then displaying the input items, and then processing the output items
Entering the input items, then processing the input items, and then displaying the output items

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

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

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