<?xml version="1.0"?> | |
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"> | |
<xs:element name="doc"> | |
<xs:complexType> | |
<xs:sequence> | |
<xs:choice minOccurs="1" maxOccurs="3"> | |
<xs:element name="a"/> | |
<xs:element name="b"/> | |
</xs:choice> | |
</xs:sequence> | |
</xs:complexType> | |
</xs:element> | |
</xs:schema> |