In ETL testing, what does the "Transform" phase primarily involve?
- Data cleansing
- Data extraction
- Data manipulation
- Data validation
In ETL (Extract, Transform, Load) testing, the "Transform" phase primarily involves data manipulation, where data is converted or transformed from its source format to the required format for the target system. This phase includes tasks such as data aggregation, filtering, joining, and applying business rules or transformations to ensure that the data meets the desired quality and format for further processing and analysis.
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