- From: Paul Cotton <pcotton@microsoft.com>
- Date: Tue, 8 Apr 2003 17:39:32 -0400
- To: "Tim Bray" <tbray@textuality.com>
- Cc: <www-tag@w3.org>, "Paul Grosso" <pgrosso@arbortext.com>, <LMM@acm.org>, <roy.fielding@day.com>
I am researching the history of the TAG work on the namespaceDocument-8 Issue [0]. Namespaces in XML 1.1 [1] states: "The attribute's normalized value must be either an IRI reference - the namespace name identifying the namespace - or an empty string. The namespace name, to serve its intended purpose, should have the characteristics of uniqueness and persistence. It is not a goal that it be directly usable for retrieval of a schema (if any exists). An example of a syntax that is designed with these goals in mind is that for Uniform Resource Names [RFC2141]. However, it should be noted that ordinary URLs can be managed in such a way as to achieve these same goals." But your document "Architectural Theses on Namespaces and Namespace Documents" [2] states: "6. Namespace names should not be URNs. Given that namespace documents are a desirable thing, and given that at the present time, URNs are not effectively usable in the general population for retrieval of resources, URNs are not appropriate for use as namespace names." Given the above two statements I have a couple of questions: Q1: Do you consider these two statements to be in conflict with each other e.g. would you prefer that the Namespaces 1.1 specification be changed to discourage the use of URNs? Q2: Your text "URNs are not effectively usable" might lead me to believe that there might be an effort ongoing to standardize how to retrieve resources using URNs. Do you know of such an effort? /paulc [0] http://www.w3.org/2001/tag/ilist#namespaceDocument-8 [1] http://www.w3.org/TR/xml-names11/#ns-decl [2] http://www.textuality.com/tag/Issue8.html [RFC2141] ftp://ftp.rfc-editor.org/in-notes/rfc2141.txt Paul Cotton, Microsoft Canada 17 Eleanor Drive, Nepean, Ontario K2E 6A3 Tel: (613) 225-5445 Fax: (425) 936-7329 mailto:pcotton@microsoft.com
Received on Tuesday, 8 April 2003 17:39:41 UTC