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Re: XSD "one or more" construct

From: Wors <grahamnospam.worsley@---------.--->
To: NULL
Date: 10/2/2005 4:06:00 PM

Wors wrote:
> When defining an XSD is there a way of specifying that one or more 
> elements in a structure must exist?
> 
> E.g. Structure A Element B Element C End Structure
> 
> If I make them both optional (minoccurs 0) then it means Structure A 
> may contain nothing which isn't right. What it must contain is B, C 
> or both B and C .
OK found out how to do this using the choice construct and setting 
maxoccurs to the number of choices allowed (min 1 max 2)

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified" attributeFormDefault="unqualified">
<xs:element name="Example">
<xs:complexType>
<xs:sequence>
<xs:element name="A" maxOccurs="unbounded">
<xs:complexType>
<xs:choice maxOccurs="2">
<xs:element name="B"/>
<xs:element name="C"/>
</xs:choice>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>

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