Re: What is "the Web"
"Bullard, Claude L (Len)" scripsit: > > As long as a representation is returned, you are right. > A representation of a physical singularity might be any > of the things you cite; ie, documents. > > A definition of identity where the words "all", "any", > etc. are used will collapse into a singularity. > At that point, we lose access to details. If however, > the Web is defined as an abstract "system", it is > likely to be defined as a set of components > any of which is boundable, but which when > combined, the notion of boundary is described > in terms of that assembly (the system, not > the information it can represent). These boundaries > are useful because the thing named is the > assembly, and the capabilities of that assembly > can be specified and named. Then and only > then does the concept of identity as bound > to location become useful because that property > limits the choice of choices. Basic Shannon. > > We can cite abstract definitions of information space, > and even very large information space(s), but > the web is a system that enables us to identify > (and I use the verb deliberately) and access > representations of information items in the > space. That the space is abstract is fine. > It needs to be. One who cannot program to > abstractions should not use XML on the Web. > But ultimately the architecture of the Web system > is concerned with the specifications of the > components and the ways in which these can > be combined to meet a given requirement in > the context of a network: The Internet. > > The Web is an abstraction. The Internet > components are not. Information space > is an abstraction; representations or > resources are not. We do not simply > enumerate components; we define a context > of use in accordance with the requirements. > > We can usefully say that SOAP/RPC is a Web > system and that information it accesses is on > the Web where it uses these Internet components > in accordance with these requirements (which > Fielding, et al have brilliantly enumerated). > We cannot be as picky about how extensively > that is applied: that is, if a URI identifies > a WSDL, that is on the web. Anything that is > returns as a representation is on the web. If > the implementor chooses to hide information > behind that, it is not on the web and that > is a strictly local and private decision, and > not warrantied by the Web system definitions. > If they use a Web service that hides these, > then as TimBL and Paul have pointed out, the > user is not held accountable for side effects > if any. > > Beating it out of them just makes the pig mad. > > len > > -----Original Message----- > From: Mark Baker [mailto:distobj@a...] > > On Fri, Apr 26, 2002 at 09:25:20AM -0500, Bullard, Claude L (Len) wrote: > > A black hole. > > Could have lots of different representations; > > - a picture (xray) > - its location > - its Schwarzschild radius > > It obviously can't identify itself, but anybody can identify it for > themselves. For example; > > http://lenbullard.com/xml-dev-black-hole/ > > A GET could return any of the above. > > ----------------------------------------------------------------- > The xml-dev list is sponsored by XML.org <http://www.xml.org>, an > initiative of OASIS <http://www.oasis-open.org> > > The list archives are at http://lists.xml.org/archives/xml-dev/ > > To subscribe or unsubscribe from this list use the subscription > manager: <http://lists.xml.org/ob/adm.pl> > -- John Cowan <jcowan@r...> http://www.reutershealth.com I amar prestar aen, han mathon ne nen, http://www.ccil.org/~cowan han mathon ne chae, a han noston ne 'wilith. --Galadriel, _LOTR:FOTR_
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