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Describe the data conversion strategies used in the case study
Describe the techniques used to correct the problems listed in the case study. After seeing the problems encountered with the new system, what would you have done differently once the new system problems were discovered?
Assuming you could start over with the system conversion; provide a detailed description of two conversion strategies that could have been used that would have avoided the problems encountered in the case study. Include a discussion of cost considerations and testing you would perform prior to going live with the new system under both strategies.
Submit a 2-to 4- page document that addresses the items listed. Your document should conform to APA style.
Expert Answer
ANSWER::
CONVERSION METHODS
- •Direct cutover1: an entire organization stops using the old system at one time and begins using the new one immediately thereafter. (This may be after a natural activity break such as overnight.) The organization ends one day using the old system, begins the next day with the new. This is the riskiest method: Lee (2004) discusses how the Nevada Department of Motor Vehicles gave itself problems by using it. Other methods reduce this risk.
- •Pilot conversion: Part of an organization uses the new system while the rest of it continues to use the old. This localizes problems to the pilot group so support resources can focus on it. However, there can be interface issues where organizational units share data.
- •Phased (modular) conversion: Part of the new system is introduced while the rest of the old one remains in use. This localizes problems to the new module so support resources can focus on it. However, there can be interface issues where modules share data
- Parallel conversion: The new system is introduced while the old one is still in use. Both systems process all activity and the results are compared. Once there is confidence that the new one operates properly, the old one is shut down. Because parallel conversion isn’t as useful today as some people believe (and many authors suggest)
