RELAX to ISO
I was pleased to see the xmlhack story that RELAX is submitted for ISO fast-tracking to become a technical report. Congratulations to Murata-san and the others involved. I strongly believe that, because every schema language is made by weighing tradeoffs and with particular uses and design philosphies in mind, there is substantial benefit to the community in having different schema languages available. The feature that one markup language omits may be the one you need sometime. Which is not to deny the network-effect benefits of standardizing on particular schema languages. I think RELAX's strength is in content model issues and evolvability, while XML Schema's strength is in fine-grained datatyping, identity constraints and wildcarding. So RELAX may be most useful for idiomatic human-oriented markup languages, which XML Schemas could be more useful for completely specifying data interchange formats. (I am sure others will have legitimate views that are different. I am very interested in hearing other opinions on this.) People who are intimidated by XML Schemas (or, at least, by the material currently available to explain XML Schemas) may find RELAX more approachable. For example, you could convert your existing DTD to RELAX to gain simple datatype validation, add Schematron schemas for more co-occurrence constraints, and then plan to convert from RELAX to XML Schemas when you become comfortable that XML Schemas is worth it. At this stage in the game, don't trust: try :-) Rick Jelliffe Developer, Schematron schema language; Member, W3C XML Schema WG (not in that capacity);
PURCHASE STYLUS STUDIO ONLINE TODAY!
Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!
Download The World's Best XML IDE!
Accelerate XML development with our award-winning XML IDE - Download a free trial today!
Subscribe in XML format