Among the data gathering techniques mentioned, I would prefer document review. I'm not really good at interacting especially interviewing because it burdens me of choosing the right word to express especially when considering the language that must be used. My English is not very accurate. I'm most comfortable in document review because by reading, i can gather more relevant information and data. An analyst may collect the information/data from written documents available from manual-files of an organization. This method of data gathering is normally used if you want to computerize the existing manual system or upgrade the existing computer based system. The written documents may be reports, forms, memos, business plans, policy statements, organizational charts and many others. The written documents provide valuable information about the existing system and is complete. This is much comfortable knowing that i am not wasting their time of answering a student's questions. But i still believe that all the gathering techniques mentioned are very important and effective in gathering information, its just have to be used based or suited on my own personality. For me, these techniques are much more effective when using it as a step-by-step method. First must be the document review. Second is by observing the working of the existing system. Third is by using Questionnaires that will not serve only as a data gathering tool but also as a survey for statistical basis that could be used in future development. When the system was carefully studied and watched already, all topics, questions and issues that had risen may be finally asked personally in an interview with the person in charge in a limited time for clarifications and more information gathering.
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