Hallo, John, Eric, thanks all for your answers. Now i uses <xsd:import> to include basic type definition and uses <xsd:extension> to extend some others. It works, although it is not perfect as "inherited schemas". I found that some other description languages, such as RDF, could support such special features.
thanks again. zhou --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
