LinkType

The type of object that is being linked to.
The url of the object being linked.
A SDMX registry urn of the object being linked (if applicable).
The type of link (e.g. PDF, text, HTML, reference metadata).

<xs:complexType xmlns:xs="http://www.w3.org/2001/XMLSchema" name="LinkType">
  <xs:attribute name="rel" type="xs:string" use="required">
   <xs:annotation>
    <xs:documentation>The type of object that is being linked to.</xs:documentation>
   </xs:annotation>
  </xs:attribute>
  <xs:attribute name="url" type="xs:anyURI" use="required">
   <xs:annotation>
    <xs:documentation>The url of the object being linked.</xs:documentation>
   </xs:annotation>
  </xs:attribute>
  <xs:attribute name="urn" type="xs:anyURI" use="optional">
   <xs:annotation>
    <xs:documentation>A SDMX registry urn of the object being linked (if applicable).</xs:documentation>
   </xs:annotation>
  </xs:attribute>
  <xs:attribute name="type" type="xs:string" use="optional">
   <xs:annotation>
    <xs:documentation>The type of link (e.g. PDF, text, HTML, reference metadata).</xs:documentation>
   </xs:annotation>
  </xs:attribute>
 </xs:complexType>

rdfs:subClassOf [
    a owl:Restriction ;
    owl:onProperty sip-sdmx-ML:rel ;
    owl:allValuesFrom xsd:string
] ;
rdfs:subClassOf [
    a owl:Restriction ;
    owl:onProperty sip-sdmx-ML:rel ;
    owl:qualifiedCardinality 1 ;
    owl:onDataRange xsd:string
] ;
rdfs:subClassOf [
    a owl:Restriction ;
    owl:onProperty sip-sdmx-ML:url ;
    owl:allValuesFrom xsd:anyURI
] ;
rdfs:subClassOf [
    a owl:Restriction ;
    owl:onProperty sip-sdmx-ML:url ;
    owl:qualifiedCardinality 1 ;
    owl:onDataRange xsd:anyURI
] ;
rdfs:subClassOf [
    a owl:Restriction ;
    owl:onProperty sip-sdmx-ML:urn ;
    owl:allValuesFrom xsd:anyURI
] ;
rdfs:subClassOf [
    a owl:Restriction ;
    owl:onProperty sip-sdmx-ML:urn ;
    owl:maxQualifiedCardinality 1 ;
    owl:onDataRange xsd:anyURI
] ;
rdfs:subClassOf [
    a owl:Restriction ;
    owl:onProperty sip-sdmx-ML:type ;
    owl:allValuesFrom xsd:string
] ;
rdfs:subClassOf [
    a owl:Restriction ;
    owl:onProperty sip-sdmx-ML:type ;
    owl:maxQualifiedCardinality 1 ;
    owl:onDataRange xsd:string
] ;