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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: (data) medium is the message
 Peter.Hunsberger@s... (Hunsberger, Peter) writes: >> At the same time, though, I think there's a huge difference >> between the expectations of relational databases - which >> really demand a schema upfront before you're allowed to work >> with data - and XML, which has no such requirements. No >> rules, no violation - no harm, no foul. > >That is currently true, but in my other response to this thread I sort >of point out that this may be less and less true going forward. If >you want to have any half way decent treatment of your XML (say even >within your application) you may need a schema just to tell a parser >how to optimally parse your XML. This schema may come about after the >fact, but by the time you get to doing data exchange it should be >hanging around. Certainly, it seems an unreasonable expectation that >one can have much in the way of automated (or efficient manual) >generalized mappings without a schema (or equivalent metadata) on both >sides of the fence. That's assuming that your application is expected to know everything about incoming data up-front. There are plenty of cases where that isn't necessarily true. Stylesheets and similar mechanisms may provide information outside of a schema context, and human intervention may be a very reasonable expectation in many cases. Automation may create as many problems as it solves. -- Simon St.Laurent Ring around the content, a pocket full of brackets Errors, errors, all fall down! http://simonstl.com -- http://monasticxml.org 
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