tailieunhanh - Lecture Systems analysis and design methods (7/e): Chapter 20 – Whitten, Bentley

In this chapter, you will learn more about systems operation and support. In particular, it is useful to understand the different types of systems support provided for a production system. You will know that you understand the process of systems support when you can: Define systems operations and support; describe the relative roles of a repository, program library, and database in systems operations and support; differentiate between maintenance, recovery, technical support, and enhancement as system support activities;. | Chapter 20 Systems Operations and Support Chapter 20 – Systems Operations and Support Objectives Define systems operations and support. Describe relative roles of a repository, program library, and database in systems operations and support. Differentiate between maintenance, recovery, technical support, and enhancement as system support activities. Describe tasks required to maintain programs in response to bugs. Describe role of benchmarking in system maintenance. Describe the systems analyst’s role in system recovery. Describe forms of technical support provided by a systems analyst for the user community. Describe tasks that should/may be performed in system enhancement, and relationship between enhancement and original systems development process. Describe the role of reengineering in systems enhancement. Describe three types of reengineering. 20- Chapter 20 – Systems Operations and Support 20- Chapter 20 – Systems Operations and Support Systems support is the on-going . | Chapter 20 Systems Operations and Support Chapter 20 – Systems Operations and Support Objectives Define systems operations and support. Describe relative roles of a repository, program library, and database in systems operations and support. Differentiate between maintenance, recovery, technical support, and enhancement as system support activities. Describe tasks required to maintain programs in response to bugs. Describe role of benchmarking in system maintenance. Describe the systems analyst’s role in system recovery. Describe forms of technical support provided by a systems analyst for the user community. Describe tasks that should/may be performed in system enhancement, and relationship between enhancement and original systems development process. Describe the role of reengineering in systems enhancement. Describe three types of reengineering. 20- Chapter 20 – Systems Operations and Support 20- Chapter 20 – Systems Operations and Support Systems support is the on-going technical support for users, as well as the maintenance required to fix any errors, omissions, or new requirements that may arise. Systems operation is the day-to-day, week-to-week, month-to-month, and year-to-year execution of an information system’s business processes and application programs. An operational system is a system that has been placed into operation. Frequently called a production system. Support versus Operation 20- Chapter 20 – Systems Operations and Support The Context of Systems Operation and Support 20- Chapter 20 – Systems Operations and Support Systems Development, Operation, and Support Functions 20- Chapter 20 – Systems Operations and Support Three Important Data Stores The repository is a data store(s) of accumulated system knowledge—system models, detailed specifications, and any other documentation accumulated during systems development. The program library is a data store(s) of all application programs. The business data is all those data stores