What Does Data Extraction Mean?

Data extraction is where data is analyzed and crawled through to retrieve relevant information from data sources (like a database) in a specific pattern. Further data processing is done, which involves adding metadata and other data integration; another process in the data workflow.

Techopedia Explains Data Extraction

Data in a warehouse may come from different sources, a data warehouse requires three different methods to utilize the incoming data. These processes are known as Extraction, Transformation, and Loading (ETL).