Britannica
Sources used in this answer
What happens during the extract step of the ETL process?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
In the context of the ETL (extract, transform, and load) process, the extraction step is the initial phase where you identify and retrieve the necessary data from its original source. This is typically accomplished by running a database query to select and copy or export the specific records required for further analysis.1