ECC table related to Cost element, Internal Order , WBS element and Cost centre

Hi,

Is there any table in CO module which has details of Cost Element, WBS element, Cost centre and Internal Order. If all details can not be found in a single table then is there a link between tables ? What tables can we link ?

I have looked at tables l like COEP, COVP etc, Can not find these fields in it.

Appreciate your response .

Thanks