Hi everybody, I'd just like to add that it seems there are a number of "competitors" to the Schema specification as well. While XML Schema is endorsed by the W3C, another specification designed to describe xml documents called RELAX coming out of Japan has been championed by the ISO (see http://www.xml.gr.jp/relax/). Right now it seems really hard to judge which of those specifications will grab which parts of the market. I'd assume that there will be some form of peaceful co-existence with different specifications being used for different applications. One major new development in the cultural heritage community making use of XML Schemas is METS (Metadata Encoding and Transmission Standard), a hub-document used for exchanging, archiving and delivering hierarchically structured multimedia objects. METS is the successor to MOA2 (Making of America 2), and makes extensive use of Schema features such as extension through other schemas and data typing. For more info on METS, check out the official website at http://www.loc.gov/standards/mets/. Cheers, Guenter -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Guenter Waibel Berkeley Art Museum & Pacific Film Archive Digital Media Developer http://www.bampfa.berkeley.edu/ Digital Imaging SIG Chair, MCN http://www.mcn.edu/visig_subscribe.taf [log in to unmask] Phone 510-643-8655 Fax 510-642-4889 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~