Formalizing the Solution
At this stage, the project is almost complete. The structure chart and the pseudocode (or flow chart) developed during the design phase are used as manuals for modifying the program when necessary. While the program is being coded, other documents have to be created such as a list of variable names and definitions, descriptions of files that the program needs to work with, and layouts of output that the program produces. All these documents should be saved and made available for future reference by people who will maintain the information system.
Before the program is implemented, it has to be tested by the users. Even the best-written program is rendered useless if the user does not understand how to operate it. Hence, manuals must be developed to thoroughly explain how the program works. These manuals have to provide an overview of the program's functionality, tutorials for new users, in-depth explanations of major program features, reference documentation of all program commands, and a detailed description of the error messages generated by the program.
Maintaining the Program
The program must be maintained and evaluated regularly after it has been implemented. The process of program maintenance involves the correction of errors identified by the users. Periodic evaluation may lead to modification of the program.
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