XML Schema XML

File: Data.xml

               xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xsi:schemaLocation=
                              "http://www.rntsoft.com
                               Schema.xsd">
    
       Dear Sirs:
            This message is  very  useful.
    

File: Schema.xsd

        targetNamespace="http://www.rntsoft.com"
        xmlns="http://www.rntsoft.com"
        elementFormDefault="qualified">