Sites about the various competing ways to validate XML documents for correctness according to a schema definition, including: DTDs, XML Schema, and rule-based approaches.
Please do not submit specific DTDs here; they should go under XML/Applications.
Information, tools and other resources concerning XML DTDs (Document Type Definitions).
Please do not submit specific DTDs here; they should go under XML/Applications.
Archives of information concerning schema languages that are no longer commonly used, but interesting for historical purposes.
Category relating to the RELAX NG schema language
Category relating to the Schematron rule-based validation language
Sites relating to XML Schema, an XML-based schema language created by W3C.
This site is for W3C XML Schema only. Submit sites related to other schema languages to the parent category -- Validation.