Gathering / Collecting Information
The system analyst can use a number of techniques...
Observation allows the systems analyst to gather first-hand, unbiased information.
The downside to observation is that often people won't work the way they normally do if they know they are being watched.
Interviews allow lots of very detailed information to be gathered, but they take a long time to do, so are not possible if large groups of people are involved.
However the information gathered is limited by the questions set by the systems analyst (people could have a lot of useful information in their heads, but if the questionnaire doesn’t ask the right questions, they will not be able to pass it on)
Also many people do not take the time to fill in questionnaires seriously.
The systems analyst needs to collect examples of the documents used to get an understanding of the type and quantity of data that flows through the business or organisation.