skos.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:dct="http://purl.org/dc/terms/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" targetNamespace="http://www.w3.org/2004/02/skos/core#" elementFormDefault="qualified" attributeFormDefault="qualified">
	<xs:annotation>
		<xs:documentation xml:lang="en">
      SKOS XML Schema
      http://www.w3.org/2004/02/skos/core# 
    </xs:documentation>
	</xs:annotation>
	<xs:import namespace="http://purl.org/dc/terms/" schemaLocation="dcterms.xsd"/>
	<xs:import namespace="http://www.w3.org/1999/02/22-rdf-syntax-ns#" schemaLocation="rdf.xsd"/>
	<!-- skos:ConceptScheme-->
	<xs:complexType name="ConceptScheme">
		<xs:sequence>
			<xs:element name="ConceptScheme">
				<xs:complexType>
					<xs:sequence>
						<!-- mandatory properties for skos:ConceptScheme-->
						<xs:element ref="dct:title" minOccurs="1"/>
						<!-- recommended properties for skos:ConceptScheme-->
					</xs:sequence>
					<xs:attribute ref="rdf:about"/>
				</xs:complexType>
			</xs:element>
		</xs:sequence>
	</xs:complexType>
	<!-- skos:Concept-->
	<xs:complexType name="Concept">
		<xs:sequence>
			<xs:element name="Concept">
				<xs:complexType>
					<xs:sequence>
						<xs:element ref="rdf:type" minOccurs="0" maxOccurs="unbounded"/>
						<xs:element ref="skos:prefLabel" minOccurs="0" maxOccurs="unbounded"/>
						<xs:element name="inScheme" minOccurs="0" maxOccurs="1">
							<xs:complexType>
								<xs:attribute ref="rdf:resource" use="required"/>
							</xs:complexType>
						</xs:element>
					</xs:sequence>
					<xs:attribute ref="rdf:about"/>
				</xs:complexType>
			</xs:element>
		</xs:sequence>
	</xs:complexType>
	<!-- individual elements-->
	<xs:element name="notation" type="rdf:TypedLiteral"/>
	<xs:element name="prefLabel" type="rdf:PlainLiteral"/>
</xs:schema>