Extract load transform data warehouse3/28/2024 One aspect of data analytics is that there is often a need to mine the same data source for different purposes. In ELT, the raw data is stored in the destination system, so it does not need to be reloaded and can be transformed again immediately, saving significant time. In ETL the raw data source must first be re-loaded (assuming it’s still available) to the secondary system and then re-transformed.
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