Some discrepancies may be discovered often these are

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Unformatted text preview: eive some training to become familiar with the changes. 2. Replacing all old operation procedures by new ones. This may involve discarding of old forms, manual registers, etc. 3. Replacing of all old input and output devices with those of the new system. 4. Defining the roles of different members and assigning the responsibilities to them as per the requirements of the new system. 5. Converting data in all currently existing files into a form acceptable to the new system. This may involve inputting of data stored in manual registers and hard-copy files through the input devices of the new system. It is important to consolidate the files and eliminate duplicate records in them while converting them to the new form. File inconsistencies or any errors in existing files must also be detected and removed. Changeover Methods The three normally followed methods to carry out the changeover process are immediate changeover, parallel run and phased conversion. Each of these methods has its own advantages and disadvantages. No single method is suitable for converting all types of systems and the choice of a particular method largely depends upon the prevailing conversion circumstances. These methods are briefly described below. Immediate Changeover As shown in Figure 13.2(a), in this method, a suitable cut-off data is decided and the complete new system is put to operation from that day onwards, while the operation of the old system is completely abandoned from the cutoff date. It has been found that most systems pose some problem or the other during the changeover process. Hence the method of immediate changeover is generally considered to be risky because any failure in the new system during the changeover phase may cause total breakdown of those operations of the organization that are related to the new and the old system. The work cannot progress at all because the operation of the old system has already been stopped. This method, however, is preferred in those situations where available manpower and changeover time is less, and the system is not so critical that some operational problems during the changeover proce...
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This document was uploaded on 04/07/2014.

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