Geographic MetaData (GMD) extensible markup language is a component of the XML Schema Implementation of Geographic Information Metadata documented in ISO/TS 19139:2007. GMD includes all the definitions of http://www.isotc211.org/2005/gmd namespace. The root document of this namespace is the file gmd.xsd. This maintenance.xsd schema implements the UML conceptual schema defined in A.2.5 of ISO 19115:2003. It contains the implementation of the following classes: MD_MaintenanceInformation, MD_MaintenanceFrequencyCode, MD_ScopeCode, MD_ScopeDescription.
<xs:complexType name="MD_ScopeDescription_Type"><xs:annotation><xs:documentation>Description of the class of information covered by the information</xs:documentation></xs:annotation><xs:choice><xs:element name="attributes" type="gco:ObjectReference_PropertyType" maxOccurs="unbounded"/><xs:element name="features" type="gco:ObjectReference_PropertyType" maxOccurs="unbounded"/><xs:element name="featureInstances" type="gco:ObjectReference_PropertyType" maxOccurs="unbounded"/><xs:element name="attributeInstances" type="gco:ObjectReference_PropertyType" maxOccurs="unbounded"/><xs:element name="dataset" type="gco:CharacterString_PropertyType"/><xs:element name="other" type="gco:CharacterString_PropertyType"/></xs:choice></xs:complexType>