html xmlns="http://www.w3.org/TR/xhtml-basic" xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:src="http://nwalsh.com/xmlns/litprog/fragment" xmlns:ex='urn:publicid:-:Norman+Walsh:Schema Example:EN' head titleDocument Schematitle head body div h1A Simple Document W3C XML Schemah1 pThis schema defines the tturn:publicid:-:Norman+Walsh:Schema Example:ENtt namespace by defining several elements and their complex types. p pDocuments that conform to this schema have the general form:p preltdoc xmlns="urn:publicid:-:Norman+Walsh:Schema Example:EN"> lttitle>Sample Documentlt/title> ltpara>Some paragraphs.lt/para> lt/doc>pre div div h1a name="types"The Typesh1 pThis schema only defines three element types: ttdoctt, tttitlett, and ttparatt.p div h2The ttdoctt Typeh2 pThis is a document.p src:fragment id="doc.type" xs:complexType name='doc' xs:sequence xs:element ref="ex:title" minOccurs='0' maxOccurs='1' xs:choice minOccurs='1' maxOccurs='unbounded' xs:element ref='ex:para' xs:choice xs:sequence xs:complexType src:fragment div div h2The tttitlett Typeh2 pThis is a title.p src:fragment id="title.type" xs:complexType name='title' mixed="true" src:fragref linkend="role.attrib" xs:anyAttribute namespace="##other" processContents="lax" xs:complexType src:fragment div div h2The ttparatt Typeh2 pThis is a paragraph.p src:fragment id="para.type" xs:complexType name='para' mixed="true" src:fragref linkend="role.attrib" xs:anyAttribute namespace="##other" processContents="lax" xs:complexType src:fragment div div div h1The ttrolett Attributeh1 pEach of the complex types in this schema allows an optional role attribute. The role attribute is simply a string.p src:fragment id="role.attrib" xs:attribute name="role" type="xs:string" src:fragment div div h1The Elementsh1 pThis schema defines one element of each a href="#types"complex typea.p src:fragment id="elements" xs:element name="doc" type="ex:doc" xs:element name="para" type="ex:para" xs:element name="title" type="ex:title" src:fragment div div h1The Schemah1 pThe schema wrapper surrounds all these definitions.p src:fragment id="top" mundane-result-prefixes="ex xs" xs:schema xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:ex='urn:publicid:-:Norman+Walsh:Schema Example:EN' targetNamespace='urn:publicid:-:Norman+Walsh:Schema Example:EN' elementFormDefault='qualified' src:fragref linkend="doc.type" src:fragref linkend="title.type" src:fragref linkend="para.type" src:fragref linkend="elements" xs:schema src:fragment div body html