ETL is an acronym that can contain many meanings which are listed below.
ETL – Extract, Transform and Load
There may be many popular meanings for ETL with the most popular definition being that of Extract, Transform and Load
More ETL Definitions
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ETL stands for Extract, Transform and Load – which implies extracting data from different source tables, transform them in desired format by applying some rules on it and loading them onto target tables.
Extract — the process of reading data from a specified source database and extracting a desired subset of data.
Transform — the process of converting the extracted data from its previous form into the desired. Transformation occurs by using rules or lookup tables or by combining with other data.
Load — the process of writing the data into the target database.