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1.7.3 (Data Migration kisspng-data-migration-extract-transform-load…
1.7.3
Data Migration
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objective of data conversion is to convert existing data into the new required format, coding and structure while preserving the meaning and integrity of the data.
Integrity ?? How??
must provide some means, such as AUDIT TRAILS AND LOGS, to allow for the verification of the ACCURACY AND COMPLETENESS of the converted data.
verification of accuracy and completeness may be performed through a combination of manual processes, system utilities, vendor tools and one-time-use special applications
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use appropriate methodologies and tools to minimize the risk of:
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SYSTEM MIGRATION, INFRASTRUCTURE
DEPLOYMENT AND DATA CONVERSION
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Resulting data should be carefully tested. Steps for the conversion that are developed in the test environment must be recorded so they can be repeated on the production system
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Staged Implementation
staged deployment of applications to minimize the end-user impact of their implementation and limit the risk by having a fallback scenario with minimum impact