ETL stands for extraction, transformation and loading. Etl is a process that involves the following tasks:
1.Extracting data from source operational or archive systems which are the primary source of data for the data warehouse
2.Transforming the data - which may involve cleaning, filtering, validating and applying business rules
3.Loading the data into a data warehouse or any other database or application that houses data.
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Wednesday, November 10, 2010
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