During an ETL process redesign, what testing strategies should be employed to validate the changes without compromising existing data quality?
- Parallel Testing, Data Reconciliation, Version Testing, Integration Testing
- Regression Testing, Impact Analysis, Unit Testing, Smoke Testing
- Rollback Testing, End-to-End Testing, Performance Testing, Stress Testing
- User Acceptance Testing, Beta Testing, Security Testing, Exploratory Testing
During an ETL process redesign, employing Parallel Testing, Data Reconciliation, Version Testing, and Integration Testing is crucial to validate changes without compromising existing data quality. Parallel testing involves running both old and new systems simultaneously to identify discrepancies.
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