OT - mapping XML objects to a relational DB

I will be implementing a little content managament system with MySQL (it doesn't have PostgreSQL's 8K limitation) or PostgreSQL (I know it better than MySQL) which will be fairly limited initally but might actually grow into something rather large. Hence I don't really like the idea of mapping the structure of the documents that will be fed into the database straight to the database as this allows for little extensibility. In fact, if a new requirement comes along to feed a document into the database that is structured completely differently, my tables, being geared to one particular document type, won't be able to accommodate this structure. Now, given that XML was designed with precisely this requirement in mind and given that OODBMS's are acutally being used for this purpose, I am naturally wondering whether it can't be done using the familiar PHP tools. Any pointers, suggestions? Thanks, Frank BTW: Coldstore at http://sourceforge.net/projects/coldstore/ looks pretty cool, and although it's classified as pre-alpha there, from what I could gather elsewhere, it appears to be usable. Well, if you had a PHP interface . . . (I can't hack C or C++, unfortunately - it gets to be annoying, too). -- frank joerdens joerdens new media urbanstr. 116 10967 berlin germany e: frank@joerdens.de t: +49 (0)30 69597650 f: +49 (0)30 7864046 h: http://www.joerdens.de pgp public key: http://www.joerdens.de/pgp/frank_joerdens.asc