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W3C: Please put XSD 1.1 on hold and address the deeper issues

By Rick Jelliffe
May 13, 2009

Here is a letter I have mailed to the W3C Technical Architecture Group (TAG) and to the W3C XML Schemas Working Group, regarding the XML Schemas 1.1 proposed recommendation.

Converting XML Schemas to Schematron (#13): Identify constraints

By Rick Jelliffe
December 12, 2008

This article sketches out how to implement the same functionality as XSD's integrity constraints in Schematron.

Converting Schematron to XML Schemas, part 2

By Rick Jelliffe
December 3, 2008

I have not written anything about converting Schematron schemas to XML Schemas in the 12 months since the last little article. So here is another approach for schemas that were not written to be XSD-conversion friendly: it is just brute force and ignorance (BFI) pattern matching.

Schemas: stereotypes, archetypes or prototypes?

By Rick Jelliffe
November 17, 2008

The problem with schemas is this: sometimes we need prototypes, sometimes we need archetypes, sometimes we need stereotypes, but transitioning between them is not trivial in any schema language, which may be optimised for particular cases.

Mighty markup megadose

By Simon St. Laurent
August 25, 2008

August markup conferences always leave my brain feeling a bit bubbly. Or maybe it's just melted. As expected, Balisage offered amazing food for thought that should last until next year's event.

Best practice XSD: the very thing that makes you rich makes me poor

By Rick Jelliffe
August 15, 2008

I was re-reading NIST's XML Schema Design Quality Test Requirement Documentfrom 2004 recently: it has a great list of various best practices for XSD from different organizations from the lens of five years ago. So would be the set of meta-rules we can extract from these best practice documents?

Assertions in new XSD 1.1 draft

By Rick Jelliffe
July 8, 2008

The new XSD 1.1 draft has some revisions to the assertions system. The traditional argument against XSD 1.0 was that it had too little bang per buck: 1.1 has more bang, but more buck.

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