Hi all.

I´m a bit newbie writing xml schemas.

Is it possible to define xml element that must have unique attribute
values in same level. For example if i have a xml - document:

<list>
   <subsection name="first">
      <!-- subsection contents -->
   </subsection>
   <subsection name="first"> <!-- ERRROR!!! -->
      <!-- subsection contents -->
   </subsection>
   <subsection name="second">
      <!-- subsection contents -->
   </subsection>
</list>

Schema:
<xs:complexType name ="subSectionType">
   <xs:sequence>
      <!-- the contents of subsection -->           
   </xs:sequence>   
   <!-- THIS ATTRIBUTE VALUE MUST BE UNIQUE INSIDE LIST ELEMENT -->   
   <xs:attribute name ="name" type="subSectionNameType" use="required" />
</xs:complexType>

<xs:element name="list" minOccurs="1" maxOccurs="1">
   <xs:complexType>
      <xs:sequence>
         <xs:element name="subsection" type="subSectionType"
minOccurs="0" maxOccurs="unbounded" />
      </xs:complexType>
</xs:element>

Here, the subsection element must have unique name attribute inside
list. The schema defines, that subsection element can appear only under
list element.

Is it possible or do i have to take care of it in application code?

Asko.