MySQL - change scraper settings

First of all, my knowledge to MySQL is not very good. Though, I was able to set up a MySQL server on one of my raspberry pis, while I am successfully reading that database from my other pi via openelec with xbmc frodo. So far so good.

The problem I have, and to which I nowhere found a solution, is how do I change the settings of the scraper now? In more detail, I seemed to have scraped my movies in english, but I want to set it back to my native language, which is german. In the old days without mysql, I just edited the settings for the certain library item (ie. my movie folder) and changed the language to german.

But now, since I use the mysql database, there is no item resembling my movie folder so I cannot edit it. So I don't know how to change that settings. I cannot delete the database either, 'cause there is no option to just plunge the entries and rebuild it.

Will just re-importing that movie folder with suitable settings override the old ones?

Hope some one is able to help me, thanks in advance.

Edit: Maybe I lack in understanding how scraping works and where the information is stored, so maybe someone of you could enlighten my in that area.