Identifying WordPress Database

Hi,

I have been building a new WordPress site for a family member. The site is complete but the trouble is that the server is very slow so I need to move the site to another server in the near future.

My problem is she is using a dedicated server which she shares with her husband and when I went into phpMyAdmin to find out the name of the database I found out that between them they have about 30 databases on the server. They don’t have identifying names so I assume they were just autocreated with each WordPress install. Is there any way to identify which one I need to back up and move with the rest of the site?

Regards Margaret