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HomeProject Topics ⇒ ETL and Data Warehouse
ETL and Data Warehouse
Extract, transform, and load (ETL) is a process in data warehousing that involves


* extracting data from outside sources,
* transforming it to fit business needs, and ultimately
* loading it into the data warehouse.

ETL is important, as it is the way data actually gets loaded into the warehouse. This article assumes that data is always loaded into a data warehouse, whereas the term ETL can in fact refer to a process that loads any database.

Extract

The first part of an ETL process is to...

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