I setup a database some time ago for my blog. Everything went smoothly, and it's still going fine. A couple weeks ago I setup another database for another, exact same steps, and it runs fine, still going strong. But I checked mysql.myseconddomain.com and for the first blog there is only 1 database (the wordpress one), but for the second one there are two, one is wordpress' and the other is "information_schema".
So when did information_schema get created? What is it for? Can I delete it? How?