Majordomo was available and written about in 1992 and has a web interface component called MajorCool presented at USENIX in 1996.
MajorCool will cover the first part of the patent description - "Web updated database", while Majordomo covers the second part - "record distribution via email".
Sounds to me like a pretty good description of a ListServ Mailing List Manager which maintains a database of users and can send specific files based on keywords in either the subject or message body of an email. There can be many different kinds of files made available in this fashion, for instance the RFCs used to be published via a ListServ.
Also various ...