What is Extract/Transform/Load (ETL)?

Question

I\'ve tried reading the Wikipedia article for \"extract, transform, load\", but that just leaves me more confused...

Can someone explain what ETL is, and how it is

Answer 1

ETL is taking data from one system (extract), modifying it (transform) and loading it into another system (load).

And not necessarily in that order. You can TEL, or ELT. Probably not LTE though. :-)

It's a catch-all name for any process that takes data from one system and moves it to another.