<?xml version="1.0"?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xpns="xpns.org" xmlns:xpns1="xpns1.org" xmlns:xpns2="xpns2.org" xmlns:imp="importNS"> <xsd:import namespace="importNS" schemaLocation="idJimp.xsd"/> <xsd:import namespace="xpns.org" schemaLocation="idIxpns.xsd"/> <xsd:import namespace="xpns1.org" schemaLocation="idIxpns1.xsd"/> <xsd:element name="root"> <xsd:complexType> <xsd:sequence> <xsd:element ref="tid" maxOccurs="unbounded"/> <xsd:element ref="imp:iid1" maxOccurs="unbounded"/> <xsd:element ref="imp:sid" maxOccurs="unbounded"/> <xsd:element ref="xpns:xiid" maxOccurs="unbounded"/> </xsd:sequence> </xsd:complexType> <xsd:unique id="foo123" name="uid"> <xsd:selector xpath=".//tid"/> <xsd:field xpath=". //."/> </xsd:unique> </xsd:element> <xsd:element name="tid" type="xsd:string"/> </xsd:schema>