<xsd:element name="naming_context" minOccurs="1" maxOccurs="1">
    <xsd:annotation>
        <xsd:documentation>Each object in active directory exists under a certain naming context (also known as a partition).  A naming context is defined as a single object in the Directory Information Tree (DIT) along with every object in the tree subordinate to it.  There are three default naming contexts in Active Directory: domain, configuration, and schema.</xsd:documentation>
        <xsd:appinfo>
            <parent_item>activedirectory_item</parent_item>
            <cardinality>1</cardinality>
            <content>string</content>
        </xsd:appinfo>
    </xsd:annotation>
    <xsd:complexType>
        <xsd:simpleContent>
            <xsd:restriction base="system_characteristics:objectStringType">
                <xsd:enumeration value="domain" />
                <xsd:enumeration value="configuration" />
                <xsd:enumeration value="schema" />
                <xsd:enumeration value="" />
            </xsd:restriction>
        </xsd:simpleContent>
    </xsd:complexType>
</xsd:element>

• system_characteristics:objectStringType
  • naming_context