M4S1 System Administration and Training👩🏻💻 - Conversion Flashcards
A process of migrating from the old system to the new one.
Conversion
- it contains the description of all the activities that must occur during the implementation of the new system
Conversion Plan
- It anticipates possible problems and solutions to deal with them.
Conversion Plan
Conversion includes the following activities;
Name all files for conversion
Identify data requirements to develop new files during conversion
Listing all the data document and procedures that are required
Identifying the controls to be used in each activity
Identifying the responsibility of person for each activity
Verifying conversion schedules
Four methods of conversion
Parallel Conversion
Direct Cutover Conversion
Pilot Approach
Phase-In Method
Old and new systems are used simultaneously
Parallel Conversion
New system is implemented and old system is replaced completely.
Direct Cutover Conversion
Phase by phase Gradual implementation of the system across all users.
Pilot Approach
A system is tested in one area, then to the whole company either at once (all alone) or in steps (stage by stage).
Phase-In Method
Provides fallback when the new system fails.
Advantages of Parallel Conversion
Offers greatest security and testing of new system
Advantages of Parallel Conversion
Two Advantages of Parallel Conversion
Provides fallback when the new system fails.
Offers the greatest security and testing of the new system
Disadvantages of Parallel Conversion
Causes cost overruns
The new system may not get a fair trial
The new system may not get a fair trial
Disadvantages of Parallel Conversion
Causes cost overruns
Disadvantages of Parallel Conversion
Advantages of Direct Cutover Conversion
Forces users to make the new system work
Immediate benefit from new methods and control.
Forces users to make the new system work
Advantages of Direct Cutover Conversion
Immediate benefit from new methods and control.
Advantages of Direct Cutover Conversion
Two Disadvantages of Direct Cutover Conversion
No fall back if problems arise with the new system
Requires most careful planning
Advantages of Pilot Approach
Allows training and installation without unnecessary use of resources.
Avoid large contingencies from risk management.
Allows training and installation without unnecessary use of resources.
Advantages of Pilot Approach
Avoid large contingencies from risk management.
Advantages of Pilot Approach
A long term phase causes a problem of whether conversion goes well or not.
Disadvantage of Parallel Conversion
Disadvantage of Parallel Conversion
A long-term phase causes a problem of whether conversion goes well or not.
Provides experience and line test before implementation
Advantage of Phase-In Method
When a preferred new system involves new technology or drastic changes in performance.
Advantage of Phase-In Method
Gives the impression that the old system is erroneous and it is not reliable.
Disadvantage of Phase In Method
Disadvantage of Phase In Method
Gives the impression that the old system is erroneous and it is not reliable.
