<xs:schema 
xmlns:xs="http://www.w3.org/2001/XMLSchema" 
targetNamespace="http://niem.gov/niem/external/iso-19139-gmd/draft-0.1/gmd/dhs-gmo/1.0.0" 
xmlns:gmd="http://niem.gov/niem/external/iso-19139-gmd/draft-0.1/gmd/dhs-gmo/1.0.0"
xmlns:gco="http://niem.gov/niem/external/iso-19139-gmd/draft-0.1/gco/dhs-gmo/1.0.0" 
xmlns:xlink="http://niem.gov/niem/external/w3c-xlink/1.0/dhs-gmo/1.0.0"
elementFormDefault="qualified" version="0.1">
	<!-- ================================= Annotation ================================ -->
	<xs:annotation>
		<xs:documentation>This file was generated from ISO TC/211 UML class diagrams == 01-26-2005 12:40:05 ====== 
		ISO DTS 19139 Metadata XML Schema "gmd Geographic MetaData extensible markup language"
		 see ../readme.txt    see ../version.txt
		 
		DHS Changes 
     		2006-09-28 Changed namespace
				ns old	http://niem.gov/niem/external/xlink/1.0.0/dhs-gmo/1.0.0
				ns new	http://niem.gov/niem/external/w3c-xlink/1.0/dhs-gmo/1.0.0		

			2006-09-22 Changed namespaces following NIEM conventions
				1) targetNamespace	 http://niem.gov/niem/external/iso-19139-gmd/draft-0.1/gmd/dhs-gmo/1.0.0
				2) gmd namespace	 http://niem.gov/niem/external/iso-19139-gmd/draft-0.1/gmd/dhs-gmo/1.0.0
				3) gco  namespace	 http://niem.gov/niem/external/iso-19139-gmd/draft-0.1/gco/dhs-gmo/1.0.0
				4) xlink namespace	 http://niem.gov/niem/external/xlink/1.0.0/dhs-gmo/1.0.0
		
			2006-09-19 Changes DHS namespaces and schema locations, were
				targetNamespace="http://www.isotc211.org/2005/gmd" 
				xmlns:gmd="http://www.isotc211.org/2005/gmd" 
				xmlns:gco="http://www.isotc211.org/2005/gco" 
				xmlns:xlink="http://www.w3.org/1999/xlink" 
		</xs:documentation>
	</xs:annotation>
	<!-- ================================== Imports ================================== -->
	<xs:import namespace="http://niem.gov/niem/external/iso-19139-gmd/draft-0.1/gco/dhs-gmo/1.0.0" 
	schemaLocation="../../../gco/dhs-gmo/1.0.0/gco.xsd"/>
	<xs:include schemaLocation="constraints.xsd"/>
	<xs:include schemaLocation="distribution.xsd"/>
	<xs:include schemaLocation="maintenance.xsd"/>
	<!-- add include - lost transitive include via distribution/citation/referenceSystem/extent -->
	<!-- SJDC 2006-01-14 -->
	<xs:include schemaLocation="extent.xsd"/>
	<!-- end add include -->
	<!-- ########################################################################### -->
	<!-- ########################################################################### -->
	<!-- ================================== Classes ================================= -->
	<xs:complexType name="AbstractMD_Identification_Type" abstract="true">
		<xs:annotation>
			<xs:documentation>Basic information about data</xs:documentation>
		</xs:annotation>
		<xs:complexContent>
			<xs:extension base="gco:AbstractObject_Type">
				<xs:sequence>
					<xs:element name="citation" type="gmd:CI_Citation_PropertyType"/>
					<xs:element name="abstract" type="gco:CharacterString_PropertyType"/>
					<xs:element name="purpose" type="gco:CharacterString_PropertyType" minOccurs="0"/>
					<xs:element name="credit" type="gco:CharacterString_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element name="status" type="gmd:MD_ProgressCode_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element name="pointOfContact" type="gmd:CI_ResponsibleParty_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element name="resourceMaintenance" type="gmd:MD_MaintenanceInformation_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element name="graphicOverview" type="gmd:MD_BrowseGraphic_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element name="resourceFormat" type="gmd:MD_Format_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element name="descriptiveKeywords" type="gmd:MD_Keywords_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element name="resourceSpecificUsage" type="gmd:MD_Usage_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element name="resourceConstraints" type="gmd:MD_Constraints_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element name="aggregationInfo" type="gmd:MD_AggregateInformation_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........................................................................ -->
	<xs:element name="AbstractMD_Identification" type="gmd:AbstractMD_Identification_Type" abstract="true"/>
	<!-- ........................................................................ -->
	<xs:complexType name="MD_Identification_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:AbstractMD_Identification" minOccurs="0"/>
		</xs:sequence>
		<xs:attributeGroup ref="gco:ObjectReference"/>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<xs:complexType name="MD_BrowseGraphic_Type">
		<xs:annotation>
			<xs:documentation>Graphic that provides an illustration of the dataset (should include a legend for the graphic)</xs:documentation>
		</xs:annotation>
		<xs:complexContent>
			<xs:extension base="gco:AbstractObject_Type">
				<xs:sequence>
					<xs:element name="fileName" type="gco:CharacterString_PropertyType"/>
					<xs:element name="fileDescription" type="gco:CharacterString_PropertyType" minOccurs="0"/>
					<xs:element name="fileType" type="gco:CharacterString_PropertyType" minOccurs="0"/>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........................................................................ -->
	<xs:element name="MD_BrowseGraphic" type="gmd:MD_BrowseGraphic_Type"/>
	<!-- ........................................................................ -->
	<xs:complexType name="MD_BrowseGraphic_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:MD_BrowseGraphic" minOccurs="0"/>
		</xs:sequence>
		<xs:attributeGroup ref="gco:ObjectReference"/>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<xs:complexType name="MD_DataIdentification_Type">
		<xs:complexContent>
			<xs:extension base="gmd:AbstractMD_Identification_Type">
				<xs:sequence>
					<xs:element name="spatialRepresentationType" type="gmd:MD_SpatialRepresentationTypeCode_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element name="spatialResolution" type="gmd:MD_Resolution_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element name="language" type="gco:CharacterString_PropertyType" maxOccurs="unbounded"/>
					<xs:element name="characterSet" type="gmd:MD_CharacterSetCode_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element name="topicCategory" type="gmd:MD_TopicCategoryCode_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element name="environmentDescription" type="gco:CharacterString_PropertyType" minOccurs="0"/>
					<xs:element name="extent" type="gmd:EX_Extent_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
					<xs:element name="supplementalInformation" type="gco:CharacterString_PropertyType" minOccurs="0"/>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........................................................................ -->
	<xs:element name="MD_DataIdentification" type="gmd:MD_DataIdentification_Type" substitutionGroup="gmd:AbstractMD_Identification"/>
	<!-- ........................................................................ -->
	<xs:complexType name="MD_DataIdentification_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:MD_DataIdentification" minOccurs="0"/>
		</xs:sequence>
		<xs:attributeGroup ref="gco:ObjectReference"/>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<xs:complexType name="MD_ServiceIdentification_Type">
		<xs:annotation>
			<xs:documentation>See 19119 for further info</xs:documentation>
		</xs:annotation>
		<xs:complexContent>
			<xs:extension base="gmd:AbstractMD_Identification_Type"/>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........................................................................ -->
	<xs:element name="MD_ServiceIdentification" type="gmd:MD_ServiceIdentification_Type" substitutionGroup="gmd:AbstractMD_Identification"/>
	<!-- ........................................................................ -->
	<xs:complexType name="MD_ServiceIdentification_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:MD_ServiceIdentification" minOccurs="0"/>
		</xs:sequence>
		<xs:attributeGroup ref="gco:ObjectReference"/>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<xs:complexType name="MD_RepresentativeFraction_Type">
		<xs:complexContent>
			<xs:extension base="gco:AbstractObject_Type">
				<xs:sequence>
					<xs:element name="denominator" type="gco:Integer_PropertyType"/>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........................................................................ -->
	<xs:element name="MD_RepresentativeFraction" type="gmd:MD_RepresentativeFraction_Type"/>
	<!-- ........................................................................ -->
	<xs:complexType name="MD_RepresentativeFraction_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:MD_RepresentativeFraction" minOccurs="0"/>
		</xs:sequence>
		<xs:attributeGroup ref="gco:ObjectReference"/>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<xs:complexType name="MD_Usage_Type">
		<xs:annotation>
			<xs:documentation>Brief description of ways in which the dataset is currently used.</xs:documentation>
		</xs:annotation>
		<xs:complexContent>
			<xs:extension base="gco:AbstractObject_Type">
				<xs:sequence>
					<xs:element name="specificUsage" type="gco:CharacterString_PropertyType"/>
					<xs:element name="usageDateTime" type="gco:DateTime_PropertyType" minOccurs="0"/>
					<xs:element name="userDeterminedLimitations" type="gco:CharacterString_PropertyType" minOccurs="0"/>
					<xs:element name="userContactInfo" type="gmd:CI_ResponsibleParty_PropertyType" maxOccurs="unbounded"/>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........................................................................ -->
	<xs:element name="MD_Usage" type="gmd:MD_Usage_Type"/>
	<!-- ........................................................................ -->
	<xs:complexType name="MD_Usage_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:MD_Usage" minOccurs="0"/>
		</xs:sequence>
		<xs:attributeGroup ref="gco:ObjectReference"/>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<xs:complexType name="MD_Keywords_Type">
		<xs:annotation>
			<xs:documentation>Keywords, their type and reference source</xs:documentation>
		</xs:annotation>
		<xs:complexContent>
			<xs:extension base="gco:AbstractObject_Type">
				<xs:sequence>
					<xs:element name="keyword" type="gco:CharacterString_PropertyType" maxOccurs="unbounded"/>
					<xs:element name="type" type="gmd:MD_KeywordTypeCode_PropertyType" minOccurs="0"/>
					<xs:element name="thesaurusName" type="gmd:CI_Citation_PropertyType" minOccurs="0"/>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........................................................................ -->
	<xs:element name="MD_Keywords" type="gmd:MD_Keywords_Type"/>
	<!-- ........................................................................ -->
	<xs:complexType name="MD_Keywords_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:MD_Keywords" minOccurs="0"/>
		</xs:sequence>
		<xs:attributeGroup ref="gco:ObjectReference"/>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<xs:complexType name="DS_Association_Type">
		<xs:complexContent>
			<xs:extension base="gco:AbstractObject_Type">
				<xs:sequence/>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........................................................................ -->
	<xs:element name="DS_Association" type="gmd:DS_Association_Type"/>
	<!-- ........................................................................ -->
	<xs:complexType name="DS_Association_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:DS_Association" minOccurs="0"/>
		</xs:sequence>
		<xs:attributeGroup ref="gco:ObjectReference"/>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<xs:complexType name="MD_AggregateInformation_Type">
		<xs:annotation>
			<xs:documentation>Encapsulates the dataset aggregation information</xs:documentation>
		</xs:annotation>
		<xs:complexContent>
			<xs:extension base="gco:AbstractObject_Type">
				<xs:sequence>
					<xs:element name="aggregateDataSetName" type="gmd:CI_Citation_PropertyType" minOccurs="0"/>
					<xs:element name="aggregateDataSetIdentifier" type="gmd:MD_Identifier_PropertyType" minOccurs="0"/>
					<xs:element name="associationType" type="gmd:DS_AssociationTypeCode_PropertyType"/>
					<xs:element name="initiativeType" type="gmd:DS_InitiativeTypeCode_PropertyType" minOccurs="0"/>
				</xs:sequence>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	<!-- ........................................................................ -->
	<xs:element name="MD_AggregateInformation" type="gmd:MD_AggregateInformation_Type"/>
	<!-- ........................................................................ -->
	<xs:complexType name="MD_AggregateInformation_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:MD_AggregateInformation" minOccurs="0"/>
		</xs:sequence>
		<xs:attributeGroup ref="gco:ObjectReference"/>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<xs:complexType name="MD_Resolution_Type">
		<xs:choice>
			<xs:element name="equivalentScale" type="gmd:MD_RepresentativeFraction_PropertyType"/>
			<xs:element name="distance" type="gco:Distance_PropertyType"/>
		</xs:choice>
	</xs:complexType>
	<!-- ........................................................................ -->
	<xs:element name="MD_Resolution" type="gmd:MD_Resolution_Type"/>
	<!-- ........................................................................ -->
	<xs:complexType name="MD_Resolution_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:MD_Resolution" minOccurs="0"/>
		</xs:sequence>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<xs:simpleType name="MD_TopicCategoryCode_Type">
		<xs:annotation>
			<xs:documentation>High-level geospatial data thematic classification to assist in the grouping and search of available geospatial datasets</xs:documentation>
		</xs:annotation>
		<xs:restriction base="xs:string">
			<xs:enumeration value="farming"/>
			<xs:enumeration value="biota"/>
			<xs:enumeration value="boundaries"/>
			<xs:enumeration value="climatologyMeteorologyAtmosphere"/>
			<xs:enumeration value="economy"/>
			<xs:enumeration value="elevation"/>
			<xs:enumeration value="environment"/>
			<xs:enumeration value="geoscientificInformation"/>
			<xs:enumeration value="health"/>
			<xs:enumeration value="imageryBaseMapsEarthCover"/>
			<xs:enumeration value="intelligenceMilitary"/>
			<xs:enumeration value="inlandWaters"/>
			<xs:enumeration value="location"/>
			<xs:enumeration value="oceans"/>
			<xs:enumeration value="planningCadastre"/>
			<xs:enumeration value="society"/>
			<xs:enumeration value="structure"/>
			<xs:enumeration value="transportation"/>
			<xs:enumeration value="utilitiesCommunication"/>
		</xs:restriction>
	</xs:simpleType>
	<!-- ........................................................................ -->
	<xs:element name="MD_TopicCategoryCode" type="gmd:MD_TopicCategoryCode_Type" substitutionGroup="gco:CharacterString"/>
	<!-- ........................................................................ -->
	<xs:complexType name="MD_TopicCategoryCode_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:MD_TopicCategoryCode" minOccurs="0"/>
		</xs:sequence>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<!-- ........................................................................ -->
	<xs:element name="MD_CharacterSetCode" type="gco:CodeListValue_Type" substitutionGroup="gco:CharacterString"/>
	<!-- ........................................................................ -->
	<xs:complexType name="MD_CharacterSetCode_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:MD_CharacterSetCode" minOccurs="0"/>
		</xs:sequence>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<!-- ........................................................................ -->
	<xs:element name="MD_SpatialRepresentationTypeCode" type="gco:CodeListValue_Type" substitutionGroup="gco:CharacterString"/>
	<!-- ........................................................................ -->
	<xs:complexType name="MD_SpatialRepresentationTypeCode_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:MD_SpatialRepresentationTypeCode" minOccurs="0"/>
		</xs:sequence>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<!-- ........................................................................ -->
	<xs:element name="MD_ProgressCode" type="gco:CodeListValue_Type" substitutionGroup="gco:CharacterString"/>
	<!-- ........................................................................ -->
	<xs:complexType name="MD_ProgressCode_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:MD_ProgressCode" minOccurs="0"/>
		</xs:sequence>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<!-- ........................................................................ -->
	<xs:element name="MD_KeywordTypeCode" type="gco:CodeListValue_Type" substitutionGroup="gco:CharacterString"/>
	<!-- ........................................................................ -->
	<xs:complexType name="MD_KeywordTypeCode_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:MD_KeywordTypeCode" minOccurs="0"/>
		</xs:sequence>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<!-- ........................................................................ -->
	<xs:element name="DS_AssociationTypeCode" type="gco:CodeListValue_Type" substitutionGroup="gco:CharacterString"/>
	<!-- ........................................................................ -->
	<xs:complexType name="DS_AssociationTypeCode_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:DS_AssociationTypeCode" minOccurs="0"/>
		</xs:sequence>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
	<!-- ........................................................................ -->
	<xs:element name="DS_InitiativeTypeCode" type="gco:CodeListValue_Type" substitutionGroup="gco:CharacterString"/>
	<!-- ........................................................................ -->
	<xs:complexType name="DS_InitiativeTypeCode_PropertyType">
		<xs:sequence>
			<xs:element ref="gmd:DS_InitiativeTypeCode" minOccurs="0"/>
		</xs:sequence>
		<xs:attribute ref="gco:nilReason"/>
	</xs:complexType>
	<!-- =========================================================================== -->
</xs:schema>

• AbstractMD_Identification_Type
• DS_AssociationTypeCode_PropertyType
• DS_Association_PropertyType
• DS_Association_Type
• DS_InitiativeTypeCode_PropertyType
• MD_AggregateInformation_PropertyType
• MD_AggregateInformation_Type
• MD_BrowseGraphic_PropertyType
• MD_BrowseGraphic_Type
• MD_CharacterSetCode_PropertyType
• MD_DataIdentification_PropertyType
• MD_DataIdentification_Type
• MD_Identification_PropertyType
• MD_KeywordTypeCode_PropertyType
• MD_Keywords_PropertyType
• MD_Keywords_Type
• MD_ProgressCode_PropertyType
• MD_RepresentativeFraction_PropertyType
• MD_RepresentativeFraction_Type
• MD_Resolution_PropertyType
• MD_Resolution_Type
• MD_ServiceIdentification_PropertyType
• MD_ServiceIdentification_Type
• MD_SpatialRepresentationTypeCode_PropertyType
• MD_TopicCategoryCode_PropertyType
• MD_Usage_PropertyType
• MD_Usage_Type

• AbstractMD_Identification
• DS_Association
• DS_AssociationTypeCode
• DS_InitiativeTypeCode
• MD_AggregateInformation
• MD_BrowseGraphic
• MD_CharacterSetCode
• MD_DataIdentification
• MD_KeywordTypeCode
• MD_Keywords
• MD_ProgressCode
• MD_RepresentativeFraction
• MD_Resolution
• MD_ServiceIdentification
• MD_SpatialRepresentationTypeCode
• MD_TopicCategoryCode
• MD_Usage

• MD_TopicCategoryCode_Type