Question asked about ETL (little explanation needed)

What do you understand by the term ETL (Extraction Transfer Load) with respect to data mining and data warehousing ? ??

M.tech ..DOEACC

In my experience, the "T" in "ETL" is an abbreviation of "Transform", not "Transfer."

http://en.wikipedia.org/wiki/Extract,_transform,_load has an article that starts with the following.

Extract, transform and load (ETL) is a process in database usage and especially in data warehousing that involves:

• Extracting data from outside sources

• Transforming it to fit operational needs (which can include quality levels)

• Loading it into the end target (database or data warehouse)