xml-dev - Why validate? (was Re: Parser compliance)

[ht@cogsci.ed.ac.uk (Henry S. Thompson)]

Maybe I was overly influenced by the fact that my first exposure to
pointy brackets was in the context of SGML, but I think validation is
pretty fundamental.  A DTD is like a contract, it helps both
clients and service providers to maintain a satisfactory working
relationship.

1) As a client, I validate to save wasted round-trips when service providers
bounce my submissions for syntactic errors;

2) As a service provider, I validate to save resources, at two levels:

  2a) During application development, the earlier phases of system
      structure are much simpler and clearer because they don't mix
      (syntactic) error detection and basic structure construction;

  2b) During application operation, syntactic errors are detected and
      reported in a standard way likely to be familiar to clients,
      reducing handholding requirements.
 
In my own development work, I find (2a) particularly pertinent,
whether the applications involved are programs OR stylesheets.

ht
-- 
  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
     2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
	    Fax: (44) 131 650-4587, e-mail: ht@cogsci.ed.ac.uk
		     URL: http://www.ltg.ed.ac.uk/~ht/

xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@ic.ac.uk
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1
To unsubscribe, mailto:majordomo@ic.ac.uk the following message;
unsubscribe xml-dev
To subscribe to the digests, mailto:majordomo@ic.ac.uk the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa@ic.ac.uk)