第十章 系统运行与支持.ppt

Chapter 10 Systems Operation and Support Phase Description Chapter contents Phase Description Systems Operation and Support is the final phase in the systems development life cycle (SDLC) During the systems operation and support phase, you will be supporting a functioning information system, and you will be alert to any signs of system obsolescence, which would indicate that the system has reached the end of its useful life Chapter Objectives Explain how the systems operation and support phase relates to the rest of the system development process Describe user support activities, including user training and help desks Discuss the four main types of system maintenance: corrective, adaptive, perfective, and preventive Chapter Objectives Explain techniques for managing systems operation and support, including maintenance teams, maintenance request procedures, configuration management, maintenance releases, version control, and baselines Describe techniques for managing system performance, including performance and workload measurement, and capacity planning Chapter Objectives List factors indicating that a system has reached the end of its useful life Assess future challenges and opportunities that IT professionals will face as technology continues to reshape the workplace Introduction Now that the system is operational, the real test begins. The key question is whether or not the system meets user expectations and provides support for business objectives Systems must be maintained and improved continuously to meet changing business demands, and users constantly require assistance Overview of Systems Support and Maintenance The systems operation and support phase begins when a system becomes operational and continues until the system reaches the end of its useful life After delivering the system, the analyst has two other important tasks: he or she must support users and provide necessary maintenance to keep the system operating properly User Support Activities User