Please enable JavaScript.
Coggle requires JavaScript to display documents.
1.4 Implementation (Changeover (Direct changeover (Requires that the new…
1.4 Implementation
Changeover
Direct changeover
Requires that the new system replaces the old system without any overlap. In some cases direct changeover is the only option eg Emergency control system on an aircraft
Pilot running
Requires the new system to operate alongside the old system but only processing part of the data. The results can be compared to check that the system works correctly ( ie until the syste,m is proven) but pilot running cannot test how the system will operate with the larger quantities of data of the real situation
Parallel running
Requires the new system to operate for a short period of time alongside the older system. The results can be compared to ensure that the new system is working correctly
Phased Implementation
Involves replacing part of a system with a new system while some tasks continue to use the old system. This enables training and installation to be carried out over a longer period of time
-
Installation
Definition
Is the process of starting to use an information system in a real situation after having designed and developed it. It may enable final testing in a real situation. Different approaches are used depending on the size of the system and the properties of the data being processed
-
-
-
-