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This Concept Map, created with IHMC CmapTools, has information related to: Other Requirements Gathering Techniques, Documents available since Not all systems are well- documented, Documents available represent the formal system that the organization uses or is intended to be used, Reviewing existing documentation such as Documentation about the existing system, Other Requirements- Gathering Techniques such as Document Analysis, watching how work is being performed or system is being used advantage closer to reality, Documentation about the existing system limited by Documents available, Observation is about watching how work is being performed or system is being used, the informal system that the organization uses gap Indicates changes that need to be implemented in the new system, watching how work is being performed or system is being used should be done unobtrusively, Document Analysis helps Understand existing system, what is being used often, what is not being used represents the informal system that the organization uses, closer to reality provides better understanding to the analyst about how the system is actually being used, Forms, reports used indicates what is being used often, what is not being used, the formal system that the organization uses or is intended to be used gap Indicates changes that need to be implemented in the new system, Other Requirements- Gathering Techniques such as Observation, Document Analysis involves Reviewing existing documentation, could change people's behavior particularly when observation period is short, watching how work is being performed or system is being used should be done such that participants don't feel uncomfortable about being observed, Observation complements Interviews, Reviewing existing documentation such as Forms, reports used