XML-unique

[Abhi Venu]

<Address>
<country>India</country>
</Address>

<Address>
<country>India</country>
</Address>

I need to create an XML with following restriction .It can have multiple address elements; inside each address there will be a element country

The country name under each Address block should be unique. it should not get repeated i.e No two address Block can have same country field

I used <xs:unique name="Country_name">
<xs:selector xpath="Address /country">
<xs:field xpath="." />
</xs:unique>

but it will impose restriction only on a Address block and not in two different address blocks

[Venkata Kumar]

<xs:selector xpath="Address /country">
<xs:field xpath="." />

You may try this

<xs:selector xpath="*/Address">
<xs:field xpath="Country" />