What process does source data need to go through to be usable in a data warehouse?

Source data that contains similar information can be used without any further manipulation.

Depending on the type and source of the data, it will be stored in different sections of the data warehouse. Each section is formatted differently.

Source data must go through a process called data staging and be extracted, reformatted, and then stored in a data warehouse.

Source data must go through a process called data mining and be extracted, reformatted, and then stored in a data warehouse.