IGCSE ICT 18 - THE SYSTEMS LIFE CYCLE PART2
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THE SYSTEM LIFE CYCLE
7.3 development and testing
7.4 implementation
7.5 documentation
7.6 evaluation
LEARNING OBJECTIVES
q Testing designs
q Testing strategies
q Improvements needed as a result of testing
q Different methods of system implementation
q Methods of implementation
q Technical documentation for an information system
q User documentation for an information system
q Describe the need to evaluate a solution in terms of the efficiency of the solution, the ease of use of the solution, and the appropriateness of the solution
q Describe the need for a variety of evaluation strategies e.g.
INTRODUCTION
System life cycle is necessary to review an existing system and suggest a number of improvements.
7.3.1 Development
After designing, the system should be created and tested fully by the system analysts.
If the system contains files like database then the file structure would need to be finalized at this stage.
With the stored correct data and certain techniques, validation routines and verification methods are used to ensure for unwanted data and to make sure that any data transferred from a paper based system to an electronic system has been done accurately in this stage.
