ITM 311 Quiz: Quiz 10 study guide
7 Dec 2016
School
Department
Course
Professor
Document Summary
Adaptive maintenance changes to evolve its functionality to meet business needs. Preventive changes to reduce future failures: be able to name and describe the four system installation strategies, with their pros and cons. Time-consuming to get it just right; hence, system benefits delayed. New systems can be checked against old ones. No impact of errors, since old system still runs: cons. Not all aspects can be compared to old. May not be feasible due to costs or system size. Learning occurs as problems fixed at each new site. Limits harm and costs from system failure to pilot. Can use early success to convince others to convert. Burden on is staff to maintain old and new systems. Need code to bridge between systems if data shared. Some parts of firm get benefits before others do. Allows system development or testing to be phased. Each phase small and more manageable: cons.
