They are intended to protect the content of each specific application. They are therefore built into the application and usually written as validation rules. They can also be classified into three:
- Input controls
- Processing controls
- Output controls
Input controls are designed to prevent data alteration or loss. Data are checked for accuracy completeness and consistency. Also the range and format of data are validated to prevent GIGO situation. Processing controls ensure that data are complete, valid and accurate when being processed and that program have been properly executed. Output controls ensure that the results of computer processing are accurate, valid complete and consistent and they are also used to evaluate common output errors and their possible courses in order to determine what can be done. These controls ensure that output have set only the authorized personnel.
Kavungya answered the question on May 10, 2019 at 13:27
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