software development methodologies

• commonly-used fact finding methods when the development of a new IT system is being investigated: Observing employees in the workplace doing their jobs, Interviewing employees face to face, Circulating questionnaires to employees
• Using actors as customers to provoke reactions from employeesis not a commonly-used fact finding method when the development of a new IT system is being investigated
• when a new IT system is being developed, a "stakeholder" is someone who will be affected by the development of the IT system and may need to play an active role in its design
• Projects involving the development of new IT systems often fail. common reasons are; legal, economic and technical
• algorithmic failure is not a common reason for IT system development project failure
• in the requirements specification for a new system, Input, processing and output requirements, Minimum hardware and software specifications, and Client consent to all stated requirements is usually found
• Normalisation and data dictionaries for database componentsis not found in the requirements specification for a new system
• the contents of high-quality user documentation include: Explains how to use, maintain, back up and troubleshoot a system, often including a glossary of key words that a new user might need to look up
• In the waterfall model of system development, Backtracking to earlier stages is possible
• Systems must be evaluated to determine Whether the system still meets the user's requirements in terms of its performance, ease of use, stability/robustness and cost effectiveness, given that user requirements change over time.
• The order of steps in the waterfall model is Analysis > Design > Coding > Testing > Rollout > Maintenance
• The 4 main stages in the spiral model of system development (1) Determine objectives; (2) Identify and resolve risks; (3) Development and testing; (4) Plan the next iteration;