hi every one iil be talking today about system life cycle and and speceficaly system analysis....
System analysis is defined as the examining the existing system in detail like collecting information on how the system works , recording information (data flow diagrams) and finaly identifying problems associated with the system.
Methods of collecting information :
1- Examining documents.
2- Interviews.
3- Observation.
4- Questionnaires.
Examining documents : It is a method where an analysist should go through or check an system documents like invoices , letters , order forms , payslips , bills etc...
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