The system life cycle
* A person who analyses system’s is known as a system analyst
* They use the following five steps to guide them.
1. Analysis- Taking a look at the current system and identifying problems with the current system. The importance of this stage is the collection of info used for the analysis
2. Design- Coming up with solutions that will fix the current system problems.
3. Implementation-This is when the new and/or old systems are put into place.
4. Documentation-This is so that everyone involved understands how to operate and maintain the new system.
5. Evaluation-simply checking that the new system is up to standards
* The progress from one stage to the next is not automatic, questions will be asked at stages to make sure standards are met, if not, back to the previous stage
Collecting data for analyzing the current system
* There are 4 ways to collect info about the current system
1. Interview-interviewing key people in the system to find out how it operates. Interviews give a lot of detail about the system operates, but the take a long time too, therefor not so many people are interviewed
2. Observation-the analyst checks the system with their own eyes .First hand data is collected(also Unbiased), problem is that people will work differently
3. Questionnaires-this works great for large groups of people and is quick and easy. The info gathered is limited and people do not take the seriously
4. Existing documents-the analyst collects documents of the system to get an understanding of it