Plugfest 9 (February 2005)
http://www.adlnet.org/downloads/index.cfm?event=main.listing&categoryId=55
See topics, dealing with Meta-data, for example:

SCOurse
http://projects.aadlcolab.org/scourse/latestgreatest/viewer.htm
Sections: What is Meta-data ? and The Meta-data Information Model

Articles and Presentations

Two Minute SCORM Overview for Developers
http://www.adlnet.org/scorm/articles/7.cfm
The Meta-data specification provides a mechanism to describe the content using a pre-defined and common vocabulary. This vocabulary is broken into nine categories (see p.3 of this article).