Tutorial: The Semantic WebBy Michel KleinVrije UniversiteitXML, RDF, and Relativesdocument must have exactly one root element. Elementsanguages for representing data and knowledge are ancan carry attributes with values, encoded as additionalL important aspect of the Semantic Web. And there are“word = value” pairs inside an element tag—for example,a lot of languages around! Most languages are based on
. Here is a piece of XML:XML or use XML as syntax; some have connections toRDF or RDF Schemas. This tutorial will briefly introduceXML, XML Schemas, RDF, and RDF Schemas. List of persons in company:Let’s start with XML 47782XML (eXtensible Markup Language) is a specification On leave for 2001.for computer-readable documents. Markup means that certain sequences of characters in the document contain information indicating the role of the document’s content.The markup describes the document’s data layout and logi- XML does not imply a specific interpretation of thecal structure and makes the information self-describing, in data. Of course, on account of the tag’s names, the mean-a sense. It takes the form of words between pointy brack- ing of the previous piece of XML seems obvious toets, called tags—for example, or . In this human users, but it is not formally specified! The onlyaspect, XML looks very much like the well-known lan- ...