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After all, the customer does not care what your IT system is made up of - they are only (rightly) concerned with their holiday / medical operation / mortgage etc being booked correctly.
And so, a popular method is to allow the old system to run alongside the new one. Then in the quiet period (say overnight) , the new system absorbs all the old system's information. By the next morning, the system is fully loaded and ready to go.
3) You run only part of the new system
This is the 'phased approach' to system testing. Imagine a system so sensitive to change that only a very careful change can be considered...
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Common topics in this essay:
- stage
- Implementation Of An Enterprise System
- Implementation of a Property Management System
- Productivity System Implementation
- Stage Drama
- implementation stage
- Putting Data To Work: Intelligently Using Data Mining, Data Warehousing And Databases.
- Stage Fright
- Describe the main developmental tasks and milestones associated with each stage in human development over the lifespan. Then choose one phase only of human development and discuss the developmental needs of people in this stage. Discuss various sp...
- Accuracy of Data, Data Ouytput
- Data Base Mangement System
- functions of an Enterprise Data Management (EDM) system
- Implementation of an Enterprise-Level Business System
- Implementation stage
- System Implementation And Support
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