Page 33 - Information Management 3rd Edition

A system needs to be tested before being used to make sure it does what it is supposed to do. Use different data (correct/normal data and data containing errors) and measure output, processing times and quality. Do the necessary adjustments.
Step 5: Implementation
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If the current system is still in operation, then it needs to be decided whether to stop that operation and introduce the new system immediately or run the two systems simultaneously. Whatever the decision, the users need to be trained to use the new system. Giving background knowledge of the new system, as well as on-the-job training, might be necessary. Remember, when changing from an old to a new system, productivity may decrease initially and mistakes could occur. Prepare for such irregularities.
Step 6: Documentation
User manuals for the users and technical documentation for the IT analysts/ programmers who manage and maintain the system are needed. User manuals, for example, contain information about methods and procedures of how to work the system.
Chapter 2 – Information systems
Step 3: Design
Once the requirements are known, the project team can commence with designing the system. The requirements that are determined in steps 1 and 2 should be satisfied and the team must evaluate alternative solutions and specify the following:
• Outputs – This includes the need and form of output required, the output files that will capture the processed data, as well as the files that will record input by all the other users of the system.
• Inputs – This includes the input files that will be used to capture the input data and the procedures used to process the input, the type of data required, the amount of data, where the data will be collected from and how the data willPbeenteredrintothesystem.I-talsoipncludestheumannerofbinteractionwith the system by the users and the interfaces, which will enable users to interact with other systems.
• Hardware – This is the technology, including communication technology, suited for the system.
• Software – Packages satisfying the need, including databases and word processing.
• Con
and output of the system.
Step 4: Test
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