One of the challenges in ETL testing is dealing with ____________ data sources and complex transformations.
- Diverse
- Homogeneous
- Structured
- Unstructured
Diverse is the correct option. ETL testing can become complex when dealing with diverse data sources, including structured, semi-structured, and unstructured data, as well as complex transformations applied to the data during the ETL process. Testing must account for these variations to ensure the integrity and quality of the data.
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