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Hello Didier: Good to see you here again. Yes. The space is shaped by the dominant attractor language, HTML and the dominant storage model, relational dbs. The HTML is convenient (it fits nicely into the constraints of a human author's memory and even extended, a programmer's coding skills). The relational model probably has more persistence but between them, they are creating hysteresis for other models. I believe real-time 3D can evaporate that lock but the side effect is to recreate the computing priesthood: it takes a lot of skill to build effective real-time 3D worlds today. That may change. One problem on the table is the current standards are pretty inadequate at exposing the network in an author-friendly way. One still has to know too much about the mechanics of protocols which is where text-based hypermedia was prior to URIs and xmlhttp. Real time systems are a challenge to the current architectural assumptions. One may inquire as to how satisfactory XML and xmlhttp are for real time communications. len -----Original Message----- From: Didier PH Martin [mailto:martind@n...] Sent: Tuesday, July 18, 2006 9:44 AM To: Bullard, Claude L (Len); 'Richard Salz'; 'Costello, Roger L.' Cc: xml-dev@l... Subject: RE: RE: Why is there little usage of XML on the "visible Web"? Hello Len, Len said: Through an "HTML web browser". That is an accident of history. The Internet doesn't really care that you use HTML as the containing markup. It is the page metaphor triumphing over other modes and means. That can change but I don't expect it soon. I do expect it to be relatively sudden when it happens. Didier replies: AJAX (I now it's simply rebranding the actual capabilities) is slowly changing that. We now have two metaphors: a) Not (or very little) interactive pages. Just a small improvement over the printed media (with the exception of video) b) Interactive applications such as mail, word processors, order entry, etc... The latter are not so much based on the page model than on the application model with overlays. The latter trend can potentially be re-enforced by XAML even if XAML is not a W3 recommendation or an international or European standard. We can observe that even if it is possible to be "model driven" with a usage of data encoded into XML and rendered in HTML after going through an XSLT transformation, this method is not used on the client side and is sometime used on the server side. I attribute this lack of usage to the fact that current technologies such as xml/sql or xquery allows us to easily package data coming out of RDB in XML but do not easily allows us to update the RDB as easily without add-ons to the query engines. When round trips will be easily performed and if the data publisher has vested interest to do so, we will probably see more XML usage and more "model driven" applications. Cheers Didier PH Martin
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