<?xml version="1.0" encoding="UTF-8"?>
<!-- edited with XML Spy v4.2 U (http://www.xmlspy.com) by Robert McGrath (NCSA) -->
<!--W3C Schema generated by XML Spy v4.2 U (http://www.xmlspy.com)-->
<xs:schema targetNamespace="http://hdf.ncsa.uiuc.edu/DTDs/HDF5-File"
           xmlns:xs="http://www.w3.org/2001/XMLSchema"
            xmlns:hdf5="http://hdf.ncsa.uiuc.edu/DTDs/HDF5-File"
            elementFormDefault="unqualified" attributeFormDefault="unqualified">
    <xs:element name="ArrayDimension">
        <xs:complexType>
            <xs:attribute name="DimSize" type="xs:string" default="0"/>
            <xs:attribute name="DimPerm" type="xs:string" default="0">
                <xs:annotation>
                    <xs:documentation>This feature is not implemented in HDF5. This attribute should be ignored (and deleted as soon as possible).</xs:documentation>
                </xs:annotation>
            </xs:attribute>
        </xs:complexType>
    </xs:element>
    <xs:element name="ArrayType">
        <xs:complexType>
            <xs:sequence>
                <xs:element ref="hdf5:ArrayDimension" maxOccurs="32"/>
                <xs:element ref="hdf5:DataType"/>
            </xs:sequence>
            <xs:attribute name="Ndims" type="xs:string"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="AtomicType">
        <xs:complexType>
            <xs:choice>
                <xs:element ref="hdf5:IntegerType"/>
                <xs:element ref="hdf5:FloatType"/>
                <xs:element ref="hdf5:StringType"/>
                <xs:element ref="hdf5:TimeType"/>
                <xs:element ref="hdf5:BitfieldType"/>
                <xs:element ref="hdf5:OpaqueType"/>
                <xs:element ref="hdf5:ReferenceType"/>
                <xs:element ref="hdf5:EnumType"/>
            </xs:choice>
        </xs:complexType>
    </xs:element>
    <xs:element name="Attribute">
        <xs:complexType>
            <xs:sequence>
                <xs:element ref="hdf5:Dataspace"/>
                <xs:element ref="hdf5:DataType"/>
                <xs:element ref="hdf5:Data"/>
            </xs:sequence>
            <xs:attribute name="Name" type="xs:string" use="required"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="BitfieldType">
        <xs:complexType>
            <xs:attribute name="ByteOrder" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:NMTOKEN">
                        <xs:enumeration value="BE"/>
                        <xs:enumeration value="LE"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="Size" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:NMTOKEN">
                        <xs:enumeration value="1"/>
                        <xs:enumeration value="2"/>
                        <xs:enumeration value="4"/>
                        <xs:enumeration value="8"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
        </xs:complexType>
    </xs:element>
    <xs:element name="ChunkDimension">
        <xs:complexType>
            <xs:attribute name="DimSize" type="xs:string" default="0"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="ChunkedLayout">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="Compression" minOccurs="0">
                    <xs:annotation>
                        <xs:documentation>This element is denigrated.  Compression is one of the required filters</xs:documentation>
                    </xs:annotation>
                </xs:element>
                <xs:element ref="hdf5:ChunkDimension" maxOccurs="32"/>
                <xs:element ref="hdf5:RequiredFilter" minOccurs="0" maxOccurs="32"/>
            </xs:sequence>
            <xs:attribute name="Ndims" type="xs:string" use="required"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="CompactLayout">
        <xs:complexType/>
    </xs:element>
    <xs:element name="ComplexDataspace">
        <xs:annotation>
            <xs:documentation>This option is not implemented.</xs:documentation>
        </xs:annotation>
        <xs:complexType/>
    </xs:element>
    <xs:element name="CompoundType">
        <xs:complexType>
            <xs:sequence maxOccurs="unbounded">
                <xs:element ref="hdf5:Field"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
    <xs:element name="Compression">
        <xs:annotation>
            <xs:documentation>This element is denigrated, compression filters are under RequiredFilters</xs:documentation>
        </xs:annotation>
        <xs:simpleType>
            <xs:restriction base="xs:string"/>
        </xs:simpleType>
    </xs:element>
    <xs:element name="ContiguousLayout">
        <xs:complexType/>
    </xs:element>
    <xs:element name="Data">
        <xs:complexType>
            <xs:choice>
                <xs:element ref="hdf5:NativeHDF5"/>
                <xs:element ref="hdf5:DataFromFile"/>
                <xs:element ref="hdf5:NoData"/>
            </xs:choice>
        </xs:complexType>
    </xs:element>
    <xs:element name="DataFromFile" type="xs:string">
        <xs:annotation>
            <xs:documentation>Format of the data in this element is not defined.</xs:documentation>
        </xs:annotation>
    </xs:element>
    <xs:element name="DataType">
        <xs:complexType>
            <xs:choice>
                <xs:element ref="hdf5:AtomicType"/>
                <xs:element ref="hdf5:CompoundType"/>
                <xs:element ref="hdf5:VLType"/>
                <xs:element ref="hdf5:ArrayType"/>
            </xs:choice>
        </xs:complexType>
    </xs:element>
    <xs:element name="Dataset">
        <xs:complexType>
            <xs:choice>
                <xs:element ref="hdf5:DatasetPtr"/>
                <xs:sequence>
                    <xs:element ref="hdf5:StorageLayout" minOccurs="0"/>
                    <xs:element ref="hdf5:FillValueInfo" minOccurs="0"/>
                    <xs:element ref="hdf5:Dataspace"/>
                    <xs:choice>
                        <xs:element ref="hdf5:DataType"/>
                        <xs:element ref="hdf5:NamedDataTypePtr"/>
                    </xs:choice>
                    <xs:element ref="hdf5:Attribute" minOccurs="0" maxOccurs="unbounded"/>
                    <xs:element ref="hdf5:Data"/>
                </xs:sequence>
            </xs:choice>
            <xs:attribute name="Name" type="xs:string" use="required"/>
            <xs:attribute name="OBJ-XID" type="xs:ID" use="required"/>
            <xs:attribute name="H5Path" type="xs:string" use="required"/>
            <xs:attribute name="Parents" type="xs:IDREFS" use="required"/>
            <xs:attribute name="H5ParentPaths" type="xs:string" use="required"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="DatasetPtr">
        <xs:complexType>
            <xs:attribute name="OBJ-XID" type="xs:IDREF" use="required"/>
            <xs:attribute name="H5Path" type="xs:string" use="required"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="Dataspace">
        <xs:complexType>
            <xs:choice>
                <xs:element ref="hdf5:ScalarDataspace"/>
                <xs:element ref="hdf5:SimpleDataspace"/>
                <xs:element ref="hdf5:ComplexDataspace"/>
            </xs:choice>
        </xs:complexType>
    </xs:element>
    <xs:element name="Dimension">
        <xs:complexType>
            <xs:attribute name="DimSize" type="xs:string" default="0"/>
            <xs:attribute name="MaxDimSize" type="xs:string"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="EnumElement" type="xs:string"/>
    <xs:element name="EnumType">
        <xs:complexType>
            <xs:sequence maxOccurs="unbounded">
                <xs:element ref="hdf5:DataType"/>
                <xs:sequence minOccurs="0" maxOccurs="unbounded">
                    <xs:element ref="hdf5:EnumElement"/>
                    <xs:element ref="hdf5:EnumValue"/>
                </xs:sequence>
            </xs:sequence>
            <xs:attribute name="Nelems" type="xs:string" use="required"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="EnumValue" type="xs:string"/>
    <xs:element name="ExternalFileInfo">
        <xs:complexType>
            <xs:attribute name="FileName" type="xs:string"/>
            <xs:attribute name="ExternalFileOffset" type="xs:string"/>
            <xs:attribute name="ExternalFileSize" type="xs:string"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="ExternalLayout">
        <xs:complexType>
            <xs:sequence maxOccurs="unbounded">
                <xs:element ref="hdf5:ExternalFileInfo"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
    <xs:element name="Field">
        <xs:complexType>
            <xs:sequence>
                <xs:element ref="hdf5:DataType"/>
            </xs:sequence>
            <xs:attribute name="FieldName" type="xs:string" use="required"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="FloatType">
        <xs:complexType>
            <xs:attribute name="ByteOrder" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:NMTOKEN">
                        <xs:enumeration value="BE"/>
                        <xs:enumeration value="LE"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="Size" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:NMTOKEN">
                        <xs:enumeration value="4"/>
                        <xs:enumeration value="8"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="SignBitLocation" type="xs:string" use="required"/>
            <xs:attribute name="ExponentBits" type="xs:string" use="required"/>
            <xs:attribute name="ExponentLocation" type="xs:string" use="required"/>
            <xs:attribute name="MantissaBits" type="xs:string" use="required"/>
            <xs:attribute name="MantissaLocation" type="xs:string" use="required"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="Group">
        <xs:complexType>
            <xs:choice>
                <xs:element ref="hdf5:GroupPtr"/>
                <xs:sequence>
                    <xs:element ref="hdf5:Attribute" minOccurs="0" maxOccurs="unbounded"/>
                    <xs:choice minOccurs="0" maxOccurs="unbounded">
                        <xs:element ref="hdf5:Group"/>
                        <xs:element ref="hdf5:Dataset"/>
                        <xs:element ref="hdf5:NamedDataType"/>
                        <xs:element ref="hdf5:SoftLink"/>
                    </xs:choice>
                </xs:sequence>
            </xs:choice>
            <xs:attribute name="Name" type="xs:string" use="required"/>
            <xs:attribute name="OBJ-XID" type="xs:ID" use="required"/>
            <xs:attribute name="H5Path" type="xs:string" use="required"/>
            <xs:attribute name="Parents" type="xs:IDREFS" use="required"/>
            <xs:attribute name="H5ParentPaths" type="xs:string" use="required"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="GroupPtr">
        <xs:complexType>
            <xs:attribute name="OBJ-XID" type="xs:IDREF" use="required"/>
            <xs:attribute name="H5Path" type="xs:string" use="required"/>
            <xs:attribute name="Parents" type="xs:IDREFS" use="required"/>
            <xs:attribute name="H5ParentPaths" type="xs:string" use="required"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="HDF5-File">
        <xs:complexType>
            <xs:sequence>
                <xs:element ref="hdf5:UserBlock" minOccurs="0"/>
                <xs:element ref="hdf5:SuperBlock" minOccurs="0"/>
                <xs:element ref="hdf5:RootGroup"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
    <xs:element name="IntegerType">
        <xs:complexType>
            <xs:attribute name="ByteOrder" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:NMTOKEN">
                        <xs:enumeration value="BE"/>
                        <xs:enumeration value="LE"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="Sign" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:NMTOKEN">
                        <xs:enumeration value="true"/>
                        <xs:enumeration value="false"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="Size" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:NMTOKEN">
                        <xs:enumeration value="1"/>
                        <xs:enumeration value="2"/>
                        <xs:enumeration value="4"/>
                        <xs:enumeration value="8"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
        </xs:complexType>
    </xs:element>
    <xs:element name="NamedDataType">
        <xs:complexType>
            <xs:choice>
                <xs:element ref="hdf5:NamedDataTypePtr"/>
                <xs:sequence>
                    <xs:element ref="hdf5:Attribute" minOccurs="0" maxOccurs="unbounded"/>
                    <xs:element ref="hdf5:DataType"/>
                </xs:sequence>
            </xs:choice>
            <xs:attribute name="Name" type="xs:string" use="required"/>
            <xs:attribute name="OBJ-XID" type="xs:ID" use="required"/>
            <xs:attribute name="H5Path" type="xs:string" use="optional"/>
            <xs:attribute name="Parents" type="xs:IDREFS" use="required"/>
            <xs:attribute name="H5ParentPaths" type="xs:string" use="required"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="NamedDataTypePtr">
        <xs:complexType>
            <xs:attribute name="OBJ-XID" type="xs:IDREF" use="required"/>
            <xs:attribute name="H5Path" type="xs:string" use="optional"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="NativeHDF5">
        <xs:annotation>
            <xs:documentation>This element needs to be refined to implement a structured pointer to a file+dataset+selection</xs:documentation>
        </xs:annotation>
        <xs:complexType>
            <xs:attribute name="xlink_type" type="xs:string" fixed="locator"/>
            <xs:attribute name="xlink_href" type="xs:string" use="required"/>
            <xs:attribute name="H5Path" type="xs:string" use="required"/>
            <xs:attribute name="H5ObjectType" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:NMTOKEN">
                        <xs:enumeration value="HDF5Attribute"/>
                        <xs:enumeration value="HDF5Dataset"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="OBJ-XID" type="xs:ID" use="required"/>
            <xs:attribute name="start" type="xs:string"/>
            <xs:attribute name="nelems" type="xs:string" use="required"/>
            <xs:attribute name="stride" type="xs:string"/>
            <xs:attribute name="block" type="xs:string"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="NoData">
        <xs:complexType>
            <xs:attribute name="FillValue" type="xs:string" default="0"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="ObjectReferenceType">
        <xs:complexType/>
    </xs:element>
    <xs:element name="OpaqueType">
        <xs:complexType>
            <xs:attribute name="Tag" type="xs:string" use="required"/>
            <xs:attribute name="Size" type="xs:string" use="required"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="ReferenceType">
        <xs:complexType>
            <xs:choice>
                <xs:element ref="hdf5:ObjectReferenceType"/>
                <xs:element ref="hdf5:RegionReferenceType"/>
            </xs:choice>
        </xs:complexType>
    </xs:element>
    <xs:element name="RegionReferenceType">
        <xs:annotation>
            <xs:documentation>This element is not specified yet in this schema.</xs:documentation>
        </xs:annotation>
        <xs:complexType/>
    </xs:element>
    <xs:element name="RootGroup">
        <xs:complexType>
            <xs:sequence>
                <xs:element ref="hdf5:Attribute" minOccurs="0" maxOccurs="unbounded"/>
                <xs:choice minOccurs="0" maxOccurs="unbounded">
                    <xs:element ref="hdf5:Group"/>
                    <xs:element ref="hdf5:Dataset"/>
                    <xs:element ref="hdf5:NamedDataType"/>
                    <xs:element ref="hdf5:SoftLink"/>
                </xs:choice>
            </xs:sequence>
            <xs:attribute name="Name" type="xs:string" fixed="/"/>
            <xs:attribute name="OBJ-XID" type="xs:ID" use="required"/>
            <xs:attribute name="H5Path" type="xs:string" use="required" fixed="/"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="ScalarDataspace">
        <xs:complexType/>
    </xs:element>
    <xs:element name="SimpleDataspace">
        <xs:complexType>
            <xs:sequence maxOccurs="32">
                <xs:element ref="hdf5:Dimension"/>
            </xs:sequence>
            <xs:attribute name="Ndims" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:positiveInteger">
                        <xs:minInclusive value="1"/>
                        <xs:maxInclusive value="32"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
        </xs:complexType>
    </xs:element>
    <xs:element name="SoftLink">
        <xs:complexType>
            <xs:attribute name="LinkName" type="xs:string" use="required"/>
            <xs:attribute name="TargetPath" type="xs:string" use="required"/>
            <xs:attribute name="TargetObj" type="xs:IDREF"/>
            <xs:attribute name="OBJ-XID" type="xs:ID" use="required"/>
            <xs:attribute name="H5SourcePath" type="xs:string" use="required"/>
            <xs:attribute name="Parents" type="xs:IDREFS" use="required"/>
            <xs:attribute name="H5ParentPaths" type="xs:string" use="required"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="StorageLayout">
        <xs:complexType>
            <xs:choice>
                <xs:element ref="hdf5:ContiguousLayout"/>
                <xs:element ref="hdf5:ChunkedLayout"/>
                <xs:element ref="hdf5:CompactLayout"/>
                <xs:element ref="hdf5:ExternalLayout"/>
            </xs:choice>
        </xs:complexType>
    </xs:element>
    <xs:element name="StringType">
        <xs:complexType>
            <xs:attribute name="Cset" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:NMTOKEN">
                        <xs:enumeration value="H5T_CSET_ASCII"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="StrSize" type="xs:string" use="required"/>
            <xs:attribute name="StrPad" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:NMTOKEN">
                        <xs:enumeration value="H5T_STR_NULLTERM"/>
                        <xs:enumeration value="H5T_STR_NULLPAD"/>
                        <xs:enumeration value="H5T_STR_SPACEPAD"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
        </xs:complexType>
    </xs:element>
    <xs:element name="SuperBlock">
        <xs:complexType>
            <xs:attribute name="FormatVersion" type="xs:string" use="required"/>
            <xs:attribute name="LengthSize" type="xs:string" use="required"/>
            <xs:attribute name="OffsetSize" type="xs:string" use="required"/>
        </xs:complexType>
    </xs:element>
    <xs:element name="TimeType">
        <xs:complexType/>
    </xs:element>
    <xs:element name="UserBlock" type="xs:string"/>
    <xs:element name="VLType">
        <xs:complexType>
            <xs:sequence>
                <xs:element ref="hdf5:DataType"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
    <xs:element name="RequiredFilter">
        <xs:complexType>
            <xs:choice>
                <xs:element ref="hdf5:Deflate" minOccurs="0"/>
                <xs:element ref="hdf5:Fletcher32" minOccurs="0"/>
                <xs:element ref="hdf5:Shuffle" minOccurs="0"/>
                <xs:element ref="hdf5:SZIP" minOccurs="0"/>
            </xs:choice>
        </xs:complexType>
    </xs:element>
    <xs:element name="Deflate">
        <xs:complexType>
            <xs:attribute name="Level" use="optional" default="6">
                <xs:simpleType>
                    <xs:restriction base="xs:int">
                        <xs:minInclusive value="1"/>
                        <xs:maxInclusive value="9"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
        </xs:complexType>
    </xs:element>
    <xs:element name="Fletcher32"/>
    <xs:element name="Shuffle"/>
    <xs:element name="SZIP">
        <xs:complexType>
            <xs:attribute name="Pixels_per_block" type="xs:nonNegativeInteger" use="required"/>
            <xs:attribute name="Mode" use="optional">
                <xs:simpleType>
                    <xs:restriction base="xs:string">
                        <xs:enumeration value="Hardware"/>
                        <xs:enumeration value="K13"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="Coding" use="optional" default="Entropy">
                <xs:simpleType>
                    <xs:restriction base="xs:string">
                        <xs:enumeration value="Entropy"/>
                        <xs:enumeration value="NN"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="ByteOrder" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:string">
                        <xs:enumeration value="LSB"/>
                        <xs:enumeration value="MSB"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="Header" use="optional">
                <xs:simpleType>
                    <xs:restriction base="xs:string">
                        <xs:enumeration value="Raw"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
        </xs:complexType>
    </xs:element>
    <xs:element name="FillValueInfo">
        <xs:complexType>
            <xs:sequence>
                <xs:element ref="hdf5:FillValue"/>
            </xs:sequence>
            <xs:attribute name="AllocationTime" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:string">
                        <xs:enumeration value="Early"/>
                        <xs:enumeration value="Late"/>
                        <xs:enumeration value="Incremental"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="FillTime" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:string">
                        <xs:enumeration value="FillOnAlloc"/>
                        <xs:enumeration value="FillNever"/>
                        <xs:enumeration value="FillIfSet"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
        </xs:complexType>
    </xs:element>
    <xs:element name="FillValue">
        <xs:complexType>
            <xs:choice>
                <xs:element ref="hdf5:Data"/>
                <xs:element ref="hdf5:NoFill"/>
            </xs:choice>
        </xs:complexType>
    </xs:element>
    <xs:element name="NoFill"/>
</xs:schema>