Database help please

I just want to know how to determine which database is used for my website ? I have several wordpress sites and about 10 of the databases are labeled _wrdp1, _wrdp2, _wrdp3 etc. etc. , I have no idea which ones are used for which sites. I'm a bit confused. Can anyone offer any help ?

Bah I just found a way to do it. Kind of a pain though. Feel free to delete this thread mods.

found it in wp-config.php ?