Why is ETL process so important?

There is no best way to load data collected from different clients into database.

ETL tools provide graphical view to load data without any coding headache.

Extraction : It is the process of extracting data from different source file such as XML, excel, flat ....

Transformation: In this process data conversion take place such as string to int or date as per requirement.

Loading: It rear and final step to pour data in data base

We have lots of ETL technologies such as SSIS, TalenD, Informatic etc... most of them are free source except SSIS which is Microsoft product (Incensed ).