[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

RE: Victory has been declared in the schema wars ...

• From: "Costello, Roger L." <costello@m...>
• To: <xml-dev@l...>
• Date: Wed, 29 Nov 2006 06:32:28 -0500

Rick Jelliffe wrote:

[Assertion] grammars are a bad foundation

[Assertion] Schemas should be based on paths

These are two powerful assertions Rick.

Would you explain why grammar-based languages (e.g., DTD, XSD, RNG) are
a bad foundation?  A grammar-based language tells an instance document
author what tags are allowed, how those tags may be arranged, and the
datatypes of the data.  Isn't that what we want from a schema language?
Shouldn't that information serve as the foundation for a schema?

Also, would you explain why paths (XPaths) provide a more suitable
foundation?

Thanks.

/Roger

• Follow-Ups:
  • RE: Victory has been declared in the schema wars ...
    • From: "Rick Jelliffe" <rjelliffe@a...>
  • Re: Victory has been declared in the schema wars ...
    • From: Paul Downey <paul.downey@w...>

• References:
  • Re: Victory has been declared in the schema wars ...
    • From: Rick Jelliffe <rjelliffe@a...>