Corporate training and exhibition videos may be eligible. They aren't definitely included but they aren't definitely excluded either. You may want to try submitting one, see if it gets accepted, and then submit some more later if the first one gets accepted.
If you can find miscellaneous links -- articles from newspapers, magazines, and independent web sites mentioning the video -- that will greatly increase the likelihood that the video will be included in the database.
On a related note, a corporate training video produced by an independent production company with copies available to be sold to various corporations would presumably be eligible for listing. For example, you will find a bunch of them in John Cleese's filmography. http://www.imdb.com/name/nm0000092/