Cart
[Home] [By Thread] [By Date] [Recent Entries]
On Thu, Apr 04, 2002 at 08:34:46AM -0500, Seairth Jacobs wrote: > One of the things I undersand to be true about XML-1.0 is that it is a > subset of SGML such that any SGML processor can understand and XML document > as-is. If XML Nnamespaces-1.1 were to be joined to XML-1.1, what does this > mean about SGML compatibility? Is this even a consideration for future > versions of XML? Or is the issue of compatibility only concerned with > well-formedness? (sorry, I know little about SGML itself.) In general, namespaces and DTDs do not play very well together. But in a restricted sense, they can be made to cooperate. See SVG for an example of an XML vocabulary that uses DTDs and namespaces. It's not a generalized application of namespaces+DTDs, but it does show that the two technologies *can* be interoperable to a limited degree. I'd be very surprised if an SVG document cannot be validated by an SGML parser. Over the last 5 years, SGML compatibility has been a significant issue to a small minority of XML users. Those who still require it will continue to have interoperability with XML 1.0 and SGML, even if (when?) XML 1.0+epsilon breaks SGML compatibility. That's a fair trade. Z.
|
