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copied!<p>It is possible to create a schema importing and using another schema. This defines your <code>customer</code> element with <code>customertype</code> containing a schema:</p> <pre><code><xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="http://xml.netbeans.org/schema/Notes" xmlns:tns="http://xml.netbeans.org/schema/Notes" elementFormDefault="qualified"> <xsd:import namespace="http://www.w3.org/2001/XMLSchema"/> <xsd:element name="customer"> <xsd:complexType> <xsd:sequence> <xsd:element name="customername" type="xsd:string"/> <xsd:element name="customertype"> <xsd:complexType> <xsd:sequence> <xsd:element ref="xsd:schema"/> </xsd:sequence> </xsd:complexType> </xsd:element> </xsd:sequence> </xsd:complexType> </xsd:element> </xsd:schema> </code></pre> <p>The problem is that you have an additional condition on the <code>customertype</code> schema - so you should in theory get the standard XSD schema and modify it, but there are many different ways to satisfy that condition in a schema definition, so it is very tricky (and maybe impossible) to do this 'modification'</p> <p>Probably a better approach is restrict the possible schemas used inside <code>customertype</code> (e.g. it must be a single element definition with complex type specified directly etc. etc) and write a sub-set of the XSD schema that describe this restricted schema definition.</p>

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