XML Tutorial/XML Schema/ENTITY
The ENTITY datatype is derived from the NCName type.
<source lang="xml">
The value of ENTITY must match an unparsed entity name declaration in a notation element in the schema.
<xsd:notation name="jpg" public="image/jpg"
system="JPG_viewer.exe"/>
<xsd:complexType name="entityref">
<xsd:sequence> <xsd:element name="picture"> <xsd:complexType> <xsd:complexContent> <xsd:extension base="xsd:anyType"> <xsd:attribute name="image"type="xsd:ENTITY"/> </xsd:extension> </xsd:complexContent> </xsd:complexType> </xsd:element> </xsd:sequence>
</xsd:complexType>
<picture image="jpg">Brochure</picture></source>