XML schema is supported in a similar way, but requires an explicit schema to be provided: As described above, the parser support for DTDs depends on internal or external subsets of the XML file.
This means that the XML file itself must either contain a DTD or must reference a DTD to make this work.
It is a forward chaining reasoner which can be used for querying, checking, transforming and filtering information.
Its core language is RDF, extended to include rules, and it uses RDF/XML or Notation 3 (N3) serializations as required.
See also: Robin Cover's index of XML Schema materials.
XML Schema 1.1 (in two parts) is a W3C Recommendation.
This paper provides an introduction to Schematron; an innovative XML validation language developed by Rick Jelliffe.
This innovation stems from selecting an alternative approach to validation than existing schema languages: Schematron uses a tree pattern based paradigm, rather than the regular grammars used in DTDs and XML schemas.
RDF Parser DAML APIPersistence RDF Query The DAML API is a collection of Java interfaces and utility classes that implements an interface for manipulating DAML ontologies.
API free implementation of telnet and ssh for Win32 platforms, along with an xterm terminal emulator (does not include port forwarding) Secure Shell Client Cwm is a general-purpose data processor for the semantic web.
The XML Schema Working Group, part of the XML Activity, is responsible for the W3C's work on this topic -- for details see the Working Group's charter.