[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: The triples datamodel -- was Re: Semantic Web pe
> PNG files learnt from this; PNG chunks have a flag in them > which indicates if they are necessary to decode the image this sounds like the 'mustUnderstand' flag in the SOAP extensibility model. the nub of the argument here, AIUI, is whether extensibility is enabled generically by default in an XML processor (you must ignore what you don't understand) or if each and every XML vocabulary must define its own extensions and versioning model and get it right in the first version of that vocabulary. you're right there is nothing new about XML, apart from one very big thing: massive widespread use. So there is great promise of XML providing generic versioning techniques to assist the massive number of XML users and help in some way to provide tools and techniques to solve this difficult but important hardy perennial of a problem. Paul
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