Here are a few examples of database documentaries (in reference to the same topic in section 2 of Digital_Humanities, pp. 54-55):

Work by Ian Flitman who calls them “adaptive media narratives”: http://www.blipstation.com. Check out “Hackney Girl” for an early example.

An example for an educational German Studies/Cultural Studies interactive (database) doucmentary is “Berliner sehen”, developed here at MIT. It was filmed in 1995 and has been online and used wihtout interuption since 1997. Berliner sehen.

There are plenty more, please add them if you find another good example.