Tommy Scherer 10-7 The delivery methods vendors use to...

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Tommy Scherer 10-7. The delivery methods vendors use to provide support include: automated support (online support forms), support through a help desk, and the use of a backup system. These can be exter- nal or internal to the organization. 10-8. Four major activities that occur within maintenance include: obtaining maintenance re- quests, transforming requests into changes, designing changes, and implementing changes. The first phase of the SDLC, systems planning and selection, is similar to the maintenance process of obtaining a maintenance request. The systems analysis phase is similar to the maintenance process of transforming requests into a specific system change. Systems design is similar to the designing changes process. The systems implementation and operations phase is similar to im- plementing changes. 10-9. The different types of maintenance include: corrective, adaptive, perfective, and preven- tive. Corrective maintenance is repairing design and programming errors, adaptive maintenance
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