<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" 
           elementFormDefault="qualified" 
           targetNamespace="http://www.example.com/postals" 
           xmlns:postals="http://www.example.com/postals">

  <xs:element name="postals">
    <xs:complexType>
      <xs:sequence>
        <xs:element maxOccurs="unbounded" ref="postals:row"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="row">
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="postals:city"/>
        <xs:element ref="postals:prefix"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="city" type="xs:string"/>
  <xs:element name="prefix" type="xs:string"/>
</xs:schema>