The HBO MODS Extension contains extensions for Awards, Grades and Organisation names. For a technical implementation, please see the XML schema provided on this page.

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:mods="http://www.loc.gov/mods/v3" xmlns="info:eu-repo/xmlns/hboMODSextension" targetNamespace="info:eu-repo/xmlns/hboMODSextension" elementFormDefault="qualified" attributeFormDefault="unqualified">
	<xs:import namespace="http://www.loc.gov/mods/v3" schemaLocation="http://www.loc.gov/standards/mods/v3/mods-3-4.xsd"/>
	
	<!-- (1) HBO MODS extension -->
	
	<xs:element name="hbo" type="hboDefinition"/>
	
	<!-- (2) Group Definition -->
	
	<xs:group name="hboGroup">
		<xs:choice>
			<xs:element name="award" type="awardDefinition"/>
			<xs:element name="grade" type="gradeDefinition"/>
			<xs:element name="name" type="nameDefinition"/>
		</xs:choice>
	</xs:group>

	<xs:complexType name="hboDefinition">
		<xs:group ref="hboGroup" maxOccurs="unbounded"/>
	</xs:complexType>
	
	
	<!-- (3) Top Level Types -->	
	
	<!-- awardType definition -->
	<xs:complexType name="awardDefinition">
		<xs:sequence>
			<xs:element name="issuedBy" type="namedEntityType"/>
			<xs:element name="description" type="xs:string"/>
			<xs:element name="dateAwarded" type="mods:dateDefinition"/>
		</xs:sequence>
		<xs:attribute name="ID" type="xs:string" use="optional"/>
		<xs:attribute name="authority" type="xs:string" use="optional"/>
	</xs:complexType>
	
	<!-- gradeType definition -->
	<xs:complexType name="gradeDefinition">
		<xs:simpleContent>
			<xs:extension base="xs:string">
				<xs:attribute name="ID" type="xs:string" use="optional"/>
				<xs:attribute name="authority" type="xs:string" use="optional"/>
				<xs:attribute name="type" type="xs:string" use="optional"/>
			</xs:extension>
		</xs:simpleContent>
	</xs:complexType>
	
	<!-- nameDefinition -->
	<xs:complexType name="nameDefinition">
		<xs:complexContent>
			<xs:extension base="nameBaseDefinition">
				<xs:attribute name="altRepGroup" type="xs:string"/>
				<!--  altRepGroup new in 3.4 -->
				<xs:attribute name="nameTitleGroup" type="xs:string"/>
				<!--  nameTitleGroup new in 3.4 -->
				<xs:attribute name="usage" type="mods:usageAttributeDefinition"/>
				<!--  usage added to <name> in 3.4 -->
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
		
	
	<!-- (4) Subordinate Types -->
	
	<!-- namedEntityType definition -->
	<xs:complexType name="namedEntityType">
		<xs:simpleContent>
			<xs:extension base="xs:anyURI">
				<xs:attribute name="IDref" type="xs:string" use="optional"/>
			</xs:extension>
		</xs:simpleContent>
	</xs:complexType>
	
	<xs:group name="modsNameBaseGroup">
		<xs:choice>
			<xs:element ref="mods:namePart"/>
			<xs:element ref="mods:displayForm"/>
			<xs:element ref="mods:affiliation"/>
			<xs:element ref="mods:role"/>
			<xs:element ref="mods:description"/>
		</xs:choice>
	</xs:group>
	
	<!-- nameBaseDefinition -->
	<xs:complexType name="nameBaseDefinition">
		<xs:complexContent>
			<xs:extension base="mods:nameBaseDefinition">
				<xs:choice minOccurs="0" maxOccurs="unbounded">
					<xs:element name="namePart" type="namePartDefinition"/>
				</xs:choice>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>
	
	<!-- namePartDefinition definition -->
	<xs:complexType name="namePartDefinition">
		<xs:simpleContent>
			<xs:extension base="mods:xsString">
				<xs:attribute name="type"  type="unionNamePartTypeAttributeDefiniton"/>
			</xs:extension>
		</xs:simpleContent>
	</xs:complexType>	
	
	<!-- namePartTypeAttributeDefinition -->
	<xs:simpleType name="namePartTypeAttributeDefinition">
		<xs:restriction base="xs:string">
			<xs:enumeration value="department"/>
			<xs:enumeration value="lectorate"/>
			<xs:enumeration value="organisation"/>
		</xs:restriction>
	</xs:simpleType>
	
	<!-- unionNamePartTypeAttributeDefinition -->
	<xs:simpleType name="unionNamePartTypeAttributeDefiniton">
		<xs:union memberTypes="mods:namePartTypeAttributeDefinition namePartTypeAttributeDefinition"/>
	</xs:simpleType>	
	
</xs:schema>