Phased conversion method of implementing new Information Systems ( By Jackson Tungamira [email protected])

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CONVERSION METHODS

PHASED/GRADUAL CONVERSION

Guide: Jackson Tungamira

DEFINITION• Phased conversion involves introduction of

the new system in phases or stages, gradually replacing parts of the old system until eventually, the current system is completely replaced by the new system.

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OLD SYSTEM

NEW SYSTEM

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• It refers to the attempts that combines the best features of the parallel conversion and direct changeover, without incurring all the risk.

• In this plan, the volume of transactions handled by the new system are gradually increased as the system is phased in.

• New information system is broken down into smaller functional components and the rest of the old system remains in use.

• It gives part of the system to all users

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• A company working towards installing a new.•A company working towards installing a new

financial system, implementing the new system in one department at a time, the company converts accounts receivables, account payables, payrolls and among others.• It is mainly used in large organizations and two

systems (the old system and the new system) are operated at the same time

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ADVANTAGES OF PHASED CONVERSION

•Allows users to get to the system gradually.• Possibility of detecting and recovering from errors

without a lot of down time as the system is tested at every stage.• Staff training can be done in the stages.•Ability to add features on-by-one.

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DISADVANTAGES OF PHASED CONVERSION

• Needs a lot of time for full implementation of the system.

• If a part of the new system fails there is no back-up system, so data can be lost.

• It is relatively expensive as the system is implemented in stages.

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• In summary, the recommended conversion method would be phased conversion, where the current paper based system is transposed with the new system, process by process.

• Testing and training would occur during the implementation of each new element during the implementation.

SUMMARY

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• The time taken for complete conversion would take a lot longer than direct conversion and more expensive, but the risk of system catastrophic failure is mitigated by the virtues of a phased conversion.

• Extensive training would be required as the current system and the new system are diametrically distinct.

• With a phased conversion, the training could occur over an extended period of time as opposed to all at once.

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THANK YOU JACKSON TUNGAMIRA

JackSolutions (2016)

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