home *** CD-ROM | disk | FTP | other *** search
-
- > Forwarded from comp.text.sgml...
-
- > From: drmacro@vnet.IBM.COM
- > Date: Tue, 4 May 93 11:10:35 EDT
- >
-
- > At relatively small scales, it is possible to create hypertext
- > where authors hand craft the links between various places, say
- > via typical IDREF mechanisms
-
- > [...] This is impossible once the number of cross-library links
- goes
- > above about 50 because of maintenance problems--there are simply
- > not enough hours in the day or people on the job to create,
- maintain,
- > and test these links. The next order of magnitude up
- (cross-enterprise
- > linking) is so clearly impossible as to be not worth considering.
-
- You have a goood point of the scalability of the web. This has been
- made by some people here who have the same wories. A solution which
- works in software systems is to have, in any work, a set of anchors
- which are explicitly declared "public" just like a global
- declaration of a routine. This declation means that the author
- will maintain that (named) entry point. It may be that the server
- will want to keep a table of entry points to map them onto real
- places, and indeed in the HTTP2 protocol there is a specified but
- unimlplemented by anyone yet as far as I know (SBUAYAFAIK,
- vapourware for short) facility for an HTTP server to return a new
- URL as a name server, instead of the document.
-
- Other anchors whch are not declared public would not be linkable to
- outside the document. This would be a convention which you could
- enforce locally.
-
- This scheme scales quite well, as for any size entity (article,
- chapter, book, shelf, department, library...) there would be,
- independent of its internal size, a fixed number of global entry
- points, so the problem scales as log N ie better than the
- organisation which wrote it. (Not a dig at IBM but a comment
- on hierarchical management perhaps)
-
-
- Ed's system of referiing to searches in the index
- "Look up the section on environment
- variables in the O'Reilley MH book"
- is similar, though heuristic if you don't contract with
- ORA that they there will always be a section on envirnonment
- variables in the book.
-
- Tim Berners-Lee
- CERN
-
-