What is the primary purpose of the "Extract" phase in the ETL process?
- Load data into the target database
- Retrieve data from multiple sources
- Transform data into a consistent format
- Validate data quality
The primary purpose of the "Extract" phase in the ETL process is to retrieve data from multiple sources. This involves extracting data from various operational systems, databases, or external sources such as files or APIs. The extracted data is then prepared for the subsequent transformation phase, where it will be cleansed, validated, and transformed into a consistent format suitable for storage and analysis in the target database or data warehouse.
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