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ETL is an acronym for Extract, Transform, Load. |
Extract, Transform, Load (ETL) combines three data processing functions that transfer data from a data source to a target database.
The first stage, Extract, involves reading and extracting data from various source systems.
The second stage, Transform, converts the data from its original format into the format that meets the requirements of the target database.
The last stage, Load, saves the new data into the target database, thus finishing the process of transferring the data.
“ETL tools collect, read and migrate data from multiple data sources or structures and can identify updates or changes to data streams to avoid constant whole data set refreshes.”
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Extract
During the Extract stage, data is extracted from one of the data sources in the ETL Source panel.
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