The future of Web languages seems to be the Semantic Web, and OWL is one of its activities. Now a question arises: What does OWL provide that XML and XML Schema don't? The answer is outlined below.
1. XML provides a syntax for structured documents, but doesn't define semantic constraints on the meaning of the documents.
2. XML Schema is a language for restricting the structure of XML documents.
3. RDF is a data model for objects ("resources") and relations between them; it provides simple semantics for this data model, and these data models can be
Abstract
This memorandum describes a media type (application/rdf+xml) for use with the XML serialization of the Resource Description Framework (RDF). RDF is currently used for semantically-meaningful data on the World Wide Web, and is meant to help bring about the creation of a "Semantic Web" with semantically-meaningful information which machines are better able to process.
Introduction
The World Wide Web Consortium has issued Resource Description Framework (RDF) Model and Syntax Specification [XRDF]. To enable the exchange of RDF network
This RDF document currently provides information and references for both the Resource Description Framework (RDF) Model and Syntax Specification and the Resource Description Framework (RDF) Schema Specification. References are given for articles/papers, in addition to RDF software. A more complete RDF reference collection, in many respects, is "Dave Beckett's Resource Description Framework (RDF) Resource Guide."
"RDF (Resource Description Framework) is a framework for metadata; it provides interoperability between applications that exchange
Abstract
The Resource Description Framework (RDF) is a language for representing information about resources in the World Wide Web. This Primer is designed to provide the reader with the basic knowledge required to effectively use RDF. It introduces the basic concepts of RDF and describes its XML syntax. It describes how to define RDF vocabularies using the RDF Vocabulary Description Language, and gives an overview of some deployed RDF applications. It also describes the content and purpose of other RDF specification documents.
Status of this
RDF Schemas
1. Motivation and Scope
The model described by this document uses RDF concepts to provide a basic schema for RDF.
An RDF schema is a collection of information about classes of RDF nodes, including properties and relations. This paper supplements the RDF Model and Syntax [RDFMS] specification by providing a typing system: informally, it is a basic set of nodes and relations that can be used to express properties of classes of RDF nodes. It includes a facility to indicate that certain classes are subclasses of others, and provides a
RSS/XML