Such exchange is facilitated by schemas defining the characteristics of classes of objects.The objects can be syntactic constructs such as are used in XML instances, or may be more abstract such as are found in databases, information models or directed, labeled graphs.Several introductory and tutorial articles on the Extensible Markup Language (XML) are referenced in the shorter XML Introduction document. "The Extensible Markup Language (XML) is the universal format for structured documents and data on the Web." -- W3C XML Web site, 2000-07-06.
Create an RDF Site Summary (RSS) 0.9 file that describes your content." See description and references in a separate document. In early January 1999, a W3C Working Draft for the Document Object Model (DOM) Level 2 Specification Version 1.0 (WD-DOM-Level-2-19981228) was released.
It "defines the Document Object Model Level 2, a platform- and language-neutral interface that allows programs and scripts to dynamically access and update the content, structure and style of documents.
A new Netsape document describes how to apply MCF using XML, the Extensible Markup Language." Links: On January 5, 1998, a new (revised) submission on XML-Data was presented to the W3C by Microsoft, Arbor Text, Data Channel, and Inso. Authors: Andrew Layman, Edward Jung, Eve Maler, Henry S. It can be used for classes which as strictly syntactic (for example, XML) or those which indicate concepts and relations among concepts (as used in relational databases, KR graphs and RDF).
The former are called 'syntactic schemas;' the latter 'conceptual schemas.' The text of this NOTE thus "provides a specification (XML-Data) for describing and exchanging structured and networked data on the Web.
This paper describes an XML vocabulary for schemas.