<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml/3.2" targetNamespace="http://www.isotc211.org/2005/gco" elementFormDefault="qualified" attributeFormDefault="unqualified" version="2012-07-13">
    <!-- ================================= Annotation ================================ -->
    <xs:annotation>
        <xs:documentation>Geographic COmmon (GCO) extensible markup language is a component of the XML Schema Implementation of Geographic
Information Metadata documented in ISO/TS 19139:2007. GCO includes all the definitions of http://www.isotc211.org/2005/gco namespace. The root document of this namespace is the file gco.xsd. This gcoBase.xsd schema provides:
		1.  tools to handle specific objects like "code lists" and "record";
		2. Some XML types representing that do not follow the general encoding rules.</xs:documentation>
    </xs:annotation>
    <!-- ================================== Imports ================================== -->
    <xs:import namespace="http://www.w3.org/1999/xlink" schemaLocation="../../../../w3/1999/xlink/xlink.xsd"/>
    <xs:import namespace="http://www.opengis.net/gml/3.2" schemaLocation="../../../../ogc/gml/3.2.1/gml.xsd"/>
    <xs:include schemaLocation="gco.xsd"/>
    <!-- ########################################################################### -->
    <!-- ########################################################################### -->
    <!-- =========================================================================== -->
    <!-- ========================= IM_Object: abstract Root ============================= -->
    <!--================= Type ===================-->
    <xs:complexType name="AbstractObject_Type" abstract="true">
        <xs:sequence/>
        <xs:attributeGroup ref="gco:ObjectIdentification"/>
    </xs:complexType>
    <!--================= Element =================-->
    <xs:element name="AbstractObject" type="gco:AbstractObject_Type" abstract="true"/>
    <!-- ========================================================================== -->
    <!-- ====================== Reference of a resource =============================== -->
    <!--The following attributeGroup 'extends' the GML  gml:AssociationAttributeGroup-->
    <xs:attributeGroup name="ObjectReference">
        <xs:attributeGroup ref="xlink:simpleAttrs"/>
        <xs:attribute name="uuidref" type="xs:string"/>
    </xs:attributeGroup>
    <!--================== NULL ====================-->
    <xs:attribute name="nilReason" type="gml:NilReasonType"/>
    <!--=============== PropertyType =================-->
    <xs:complexType name="ObjectReference_PropertyType">
        <xs:sequence/>
        <xs:attributeGroup ref="gco:ObjectReference"/>
        <xs:attribute ref="gco:nilReason"/>
    </xs:complexType>
    <!-- ========================================================================== -->
    <!-- ====================== Identification of a resource ============================== -->
    <xs:attributeGroup name="ObjectIdentification">
        <xs:attribute name="id" type="xs:ID"/>
        <xs:attribute name="uuid" type="xs:string"/>
    </xs:attributeGroup>
    <!-- ========================================================================== -->
    <!-- ====================== The CodeList prototype ================================= -->
    <!--It is used to refer to a specific codeListValue in a register-->
    <!--================= Type ==================-->
    <xs:complexType name="CodeListValue_Type">
        <xs:simpleContent>
            <xs:extension base="xs:string">
                <xs:attribute name="codeList" type="xs:anyURI" use="required"/>
                <xs:attribute name="codeListValue" type="xs:anyURI" use="required"/>
                <xs:attribute name="codeSpace" type="xs:anyURI"/>
            </xs:extension>
        </xs:simpleContent>
    </xs:complexType>
    <!-- ========================================================================== -->
    <!-- ========================== The isoType attribute ============================== -->
    <xs:attribute name="isoType" type="xs:string"/>
    <!--==============End================-->
</xs:schema>
