Systems Analysis and Development
Data Gathering Techniques Used In The SDLC
Observations occurs when you evaluate the existing system, whilst taking notes on how the system functions and operates.
Questionaries is where you create a survery to give to the end users of the system to get real time feedback and information regarding to the system what it does well and doesn't.
Interviews occur with existing users to examine how functional the existing system is and allows for feedback on potential changes or upgrades that the end user wishes to see in the new system.
Sample forms allow the collection of information from current users of the existing system. This is very similar to surveys and questionnaires,
The system of examinating existing documentation and work from the current system and learning how the system functions and works.