<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
  xmlns:dfe1="www.example.org/defaultforempty/same_ns"  targetNamespace="www.example.org/defaultforempty/same_ns">

<xs:element name="StringFixed" type="xs:string" fixed="fix"/>

</xs:schema>