force uniqueness with xml schema

R

Robert Ludewig

<LinkList>
<Link ID="A01" />
<Link ID="A02" />
<Link ID="A03" />
<Link ID="A01" />
</LinkList>

How can I specify in a xmlschema that in the linklist are no occurences with
same ID ?
(Last Link is illegal)
 
C

Cat

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<LinkList>
<Link ID="A01" />
<Link ID="A02" />
<Link ID="A03" />
<Link ID="A01" />
</LinkList>

How can I specify in a xmlschema that in the linklist are no occurences with
same ID ?
(Last Link is illegal)
You can use the xs:ID simple type which won't validate for the above example

============= EXAMPLE ===============================

<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

<xs:element name="LinkList">
<xs:complexType>
<xs:sequence>
<xs:element name="Link" maxOccurs="unbounded">
<xs:complexType>
<xs:attribute name="ID" type="xs:ID"/>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>

</xs:schema>
- --
Cat

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But will breaking it up be enough?
Tue Jun 29 20:59:59 UTC 2004
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