XML Entity: Schemas

Schema General

Designing Schemas for B2B E-Commerce
XML.com
As use of XML schemas grows, the potential for reuse expands. Alongside the Common Business Library (xCBL) Gregory highlighted several other efforts worthy of a closer look. BizTalk provides a great repository of schemas, and RosettaNet is an excellent source of information on process and data set analysis. However Gregory singled out ebXML as the activity most likely to yield successful results and close the gap between the XML and EDI communities.
XML Patterns
A site about designing good XML structure with patterns.

Schema Repositories

BizTalk
Microsoft
"... the BizTalk Framework, a set of guidelines for how to publish schemas in XML and how to use XML messages to easily integrate software programs together in order to build rich new solutions."
dtd.com - The largest repository of DTDs on the net
Lumeria Inc.
ebXML - Creating A Single Global Electronic Market
UN/CEFACT, OASIS
ebXML Mission: To provide an open XML-based infrastructure enabling the global use of electronic business information in an interoperable, secure and consistent manner by all parties. About ebXML: The United Nations body for Trade Facilitation and Electronic Business (UN/CEFACT) and the Organization for the Advancement of Structured Information Standards (OASIS) have joined forces to initiate a worldwide project to standardize XML business specifications.
eCo Framework
CommerceNet
"The primary focus of CommerceNet's eCo Framework Project is to demonstrate the value of the integration of three common component-based electronic commerce services. These services are semantic integration of multiple database types with multiple data constructs and data libraries; trusted open registries; and agent-mediated buying."
The XML Schema Site
James Tauber
XMLSchema.com
extensibility Inc.

Schema Languages

RELAX
"RELAX is away simpler than XML Schema Part 1; on the other hand, RELAX borrows built-in datatypes of XML Schema Part 2. Thus, migration from RELAX to XML Schema is easy."
TREX - Tree Regular Expressions for XML
James Clark
A TREX pattern specifies a pattern for the structure and content of an XML document. A TREX pattern thus identifies a class of XML documents consisting of those documents that match the pattern. A TREX pattern is itself an XML document.

XML Schema

The basics of using XML Schema to define elements
Ashvin Radiya; IBM developerWorks
Get started using XML Schema instead of DTDs for defining the structure of XML documents.
The W3C XML Schema Specification in Context
XML.com; Rick Jelliffe
This article compares the W3C XML Schema Definition Language with XML document instances and DTDs, SGML DTDs, Perl regular expressions, and alternative schema technologies such as RELAX and Schematron.
The XML Schema FAQ
Anonymous (NEW 12. July)
Extensive and very useful XML Schema FAQ.
Using XML Schemas
Eric van der Vlist; XML.com
Tutorial about the W3C XML Schema Candidate Recommendation.
XML Schema
W3C
The home of XML Schema at the W3C.
XML Schema Tutorial
Roger L. Costello
XML Schema Tutorial (Updated July 4, 2000 to the latest spec. This tutorial contains a complete set of labs with answers. All examples in the examples folder have been validated against Henry Thompson's schema-validator, xsv.
XML Schema: Validator for XML Schema
W3C
Validator for the latest XML Schema Specification.
XML Schemas: Best Practices
Roger L. Costello
The specifics of designing a schema are dependent upon the task at hand. The goal of this effort is to come up with a set of schema design guidelines that hold true irrespective of the specific task.
XSBrowser
xsbrowser.org (NEW 16. October)
The xsbrowser (XML Schema browser) aims at creating a human readable XML document model from a given DTD (REC-xml-19980210) or XML schema (REC-xmlschema-1-20010502) by means of an HTML browser. The user needn't understand the DTD or XML Schema syntax.

Schematron

Introducing the Schematron -- A fresh approach to XML validation and reporting
Uche Ogbuji
Judging from the ongoing developments and debates about XML document validation, it's evident the language is in flux. In this article, writer and consultant Uche Ogbuji gets a handle on some of these changes and introduces the Schematron, a new validation and reporting methodology and toolkit.
Schematron
Rick Jelliffe
The Schematron is a simple and powerful Structural Schema Language. Rick Jelliffe describes it as a feather duster for the furthest corners of a room where the vacuum cleaner (DTD) cannot reach.
Topologi Schematron Validator
topologi.com (NEW 04. January)
A free Windows-based tool for validating XML documents using Schematron schemas. It also handles DTDs, W3C XML Schemas, and Schematron schemas embedded in W3C XML Schemas.
Validating XML with Schematron
Chimezie Ogbuji; XML.com
Schematron is an XML schema language, and it can be used to validate XML.

XML Vocabularies

Directory Service Markup Language (DSML)
DSML.org
With a DSML standard, any XML-based application will be able to leverage directory information expressed.
DocBook
OASIS
DocBook is a DTD (both SGML and XML versions are available) maintained by the DocBook Technical Committee of OASIS. It is particularly well suited to books and papers about computer hardware and software (though it is by no means limited to these applications).
Extending XHTML
Sean B. Palmer
This document will try to explain: Why to bother extending XHTML; Why it is "technically" so hard to extend XHTML 1.0, and to some extent XHTML 1.1; How to actually extend it (with relative ease); And some other light hearted discussion(s), including The Future Of XHTML.
Rated XHTML
Peter-Paul Koch
This article gives my view on the language the W3C has developed to succeed HTML: XHTML. Agree or disagree with me, at least you'll have something to think about and to help you decide. First I'll explain what XHTML is, then I'll give the four rules of writing correct XHTML and finally I'll add some words about why you should use XHTML.
Resource Directory Description Language (RDDL)
Jonathan Borden (ed.); Tim Bray (ed.)
A Resource Directory provides a text description of some class of resources and of other resources related to that class. It also contains a directory of links to these related resources.
Simple Form Markup Languge (SFML)
Sundararajan
Text Encoding Initiative (TEI)
TEI Consortium
The TEI is an international project to develop guidelines for the encoding of textual material in electronic form for research purposes.
VoiceXML Forum
IBM, AT&T, Motorola, Lucent Tech.
Based on the World Wide Web Consortium's industry-standard Extensible Markup Language (XML), Version 1.0 of the VoiceXML specification provides a high-level programming interface to speech and telephony resources for application developers, service providers and equipment manufacturers.
WAP Wireless Markup Language Specification (WML)
Robin Cover
Wireless Application Protocol (WAP) is a result of continuous work to define an industry wide standard for developing applications over wireless communication networks.
Web Modeling Language (WebML)
WebML.org
Web Modeling Language (WebML) is a notation for specifying complex Web sites at the conceptual level.
XML Metadata Interchange (XMI)
IBM
XMLNews
XMLNews.org
XMLNews is an exciting new set of specifications for exchanging news and information using open, Web-based standards. By making it easier to produce, receive, and archive any kind of information across different hardware, software and programming languages, XMLNews is good news for everyone in the news industry.