WEEK9

Post an entry to your blog that explains the implications of using each of these approaches at Health Centres to change from the existing manaual system to the new CHIS you have been modelling and designing in assignments 1 and 2. Your post should include discussion of the benefits and problems associated with each approach.

1.Direct cutover

This approach means the change occur immediately when the new system becomes operational. As case study material shows the old system does not share and each health institution also doed not enter the record seriously.Consequence, this approach may helpful for the health institution.However, this approach may need to change most part of the system and the person who executes may have trouble in execute a new one. Also, without correct design this approach may cause more problems.Such as the child does not receive the new vaccines or receive repeat.

2.Parallel Operation

That means that the old and news system were operated fully in specified preriod. The health institution can keep the correct record no matter the new system is work correct or not. When the new system is ensure correct then old system is terminated.Also, the results from old and new system can used for compare to improve the new system work effectively. However, it need more resoure to run two system for one thing.

 3.Pilot Operation

The pilot operation which is a method implement the complete system at a part of the company. For the CHIS, it can solve the sharable problem in least time. It changes the parts of system, this may cause the information in the system can not math well.Such a child may have two or more personal information record.

4.Phased Operation

This changeover method which allow the designer to implement the new system in stage or modules. This method can cause less  risks of error or failures which is limited to the stage or module only. In addtion, the cost of this way is medium level.This is useful for CHIS becuse of that many institution need this new system and the fund for it is limited.

~ by cquwf on May 11, 2008.