BizTalk Blog by Chris Han

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<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">

<xs:element name="Questions">

<xs:complexType>

<xs:sequence>

<xs:element name="Question" type="Question" minOccurs="3" maxOccurs="unbounded"/>

</xs:sequence>

</xs:complexType>

</xs:element>

<xs:complexType name="Choices">

<xs:sequence>

<xs:element name="Choice" type="Choice" minOccurs="3" maxOccurs="unbounded"/>

</xs:sequence>

</xs:complexType>

<xs:complexType name="Question">

<xs:sequence>

<xs:element name="Choices" type="Choices"/>

</xs:sequence>

<xs:attribute name="ID" use="required">

<xs:simpleType>

<xs:restriction base="xs:int"/>

</xs:simpleType>

</xs:attribute>

<xs:attribute name="Title" use="required">

<xs:simpleType>

<xs:restriction base="xs:string"/>

</xs:simpleType>

</xs:attribute>

</xs:complexType>

<xs:simpleType name="Choice">

<xs:restriction base="xs:string"/>

</xs:simpleType>

</xs:schema>

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Sample: