During the _______ phase of ETL, data is typically extracted from source systems.
- Extraction
- Integration
- Loading
- Transformation
The "Extraction" phase in the ETL (Extract, Transform, Load) process involves retrieving data from various source systems, which may be databases, files, or other data repositories. This phase is the initial step in data warehousing, where data is collected from its sources for further processing and analysis.
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