ETL is extraction , transforming , loading process , you will extract data from the source and apply the business role on it then you will load it in the target

the steps are :

1-define the source(create the odbc and the connection to the source DB)

2-define the target (create the odbc and the connection to the target DB)

3-create the mapping ( you will apply the business role here by adding transformations , and define how the data flow will go from the source to the target )

4-create the session (its a set of instruction that run the mapping , )

5-create the work flow (instruction that run the session)