Required attribute : attribute « XML Schema « XML

1. XML
2. XML Schema
3. attribute

Required attribute

File: Data.xml

<?xml version="1.0"?>
<images xmlns="http://www.java2s.com"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://www.java2s.com Schema.xsd">

        <image href="http://www.java2s.com/Style/Logo.png"/>

</images>

File: Schema.xsd
<?xml version="1.0"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            targetNamespace="http://www.java2s.com"
            xmlns="http://www.java2s.com"
            elementFormDefault="qualified">

    <xsd:element name="images">
        <xsd:complexType>
            <xsd:sequence>
                <xsd:element name="image" maxOccurs="unbounded">
                    <xsd:complexType>
                        <xsd:attribute name="href" type="xsd:anyURI" use="required"/>
                    </xsd:complexType>
                </xsd:element>
            </xsd:sequence>
        </xsd:complexType>
    </xsd:element>

</xsd:schema>

 

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