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  </table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td><font color="#006699" face="Verdana, sans-serif" size="-1"><a href="http://www.ibm.com/developer/">IBM developerWorks</a> : <a href="http://www.ibm.com/developer/xml/">XML</a> : <a href="http://www-106.ibm.com/developerworks/views/xml/tutorials.jsp">Education - Tutorials</a></font><br><img src="imagemaster/masthead.jpg" alt="XML Schema Infoset Model, Part 2"></td><td width="*" valign="bottom" align="right"><a border="0" href="os-schema2.zip"><img alt="ZIP" border="0" src="../default/i/icon-zip.gif"></a><a border="0" href="os-schema2-ltr.pdf"><img alt="PDF (letter)" border="0" src="../default/i/icon-pdf-ltr.gif"></a><a border="0" href="os-schema2-a4.pdf"><img alt="PDF (A4)" border="0" src="../default/i/icon-pdf-a4.gif"></a><a href="javascript:newWindow()" border="0"><img alt="e-mail" border="0" src="../default/i/icon-email.gif"></a></td></tr><tr><td height="2" colspan="2"><img height="2" width="1" src="../default/i/c.gif"></td></tr></table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td width="150" height="1" bgcolor="#000000" colspan="6"><img alt="" height="1" width="150" src="../default/i/c.gif"></td></tr><tr><td background="../default/i/sw-gold.gif"><a border="0" href="index.html" onMouseOver="iOver('topmain'); iOver('bottommain'); self.status=mainblurb; return true;" onMouseOut="iOut('topmain'); iOut('bottommain'); self.status=''; return true;"><img alt="Main menu" border="0" src="../default/i/main.gif" name="topmain"></a></td><td background="../default/i/sw-gold.gif"><a border="0" onMouseOver="iOver('topsection'); iOver('bottomsection'); self.status=sectionblurb; return true;" onMouseOut="iOut('topsection'); iOut('bottomsection'); self.status=''; return true;" href="index5.html"><img alt="Section menu" border="0" src="../default/i/section.gif" name="topsection"></a></td><td background="../default/i/sw-gold.gif"><a border="0" onMouseOver="iOver('topfeedback'); iOver('bottomfeedback'); self.status=feedbackblurb; return true;" onMouseOut="iOut('topfeedback'); iOut('bottomfeedback'); self.status=''; return true;" href="os-schema2-9-3.html"><img alt="Feedback" border="0" src="../default/i/feedback.gif" name="topfeedback"></a></td><td width="100%" background="../default/i/sw-gold.gif"><img src="../default/i/c.gif"></td><td background="../default/i/sw-gold.gif"><a border="0" onMouseOver="iOver('topprevious'); iOver('bottomprevious'); self.status=previousblurb; return true;" onMouseOut="iOut('topprevious'); iOut('bottomprevious'); self.status=''; return true;" href="os-schema2-5-4.html"><img alt="Previous" border="0" src="../default/i/previous.gif" name="topprevious"></a></td><td background="../default/i/sw-gold.gif"><a border="0" onMouseOver="iOver('topnext'); iOver('bottomnext'); self.status=nextblurb; return true;" onMouseOut="iOut('topnext'); iOut('bottomnext'); self.status=''; return true;" href="os-schema2-5-6.html"><img alt="Next" border="0" src="../default/i/next.gif" name="topnext"></a></td></tr></table><table bgcolor="ffffff" cellspacing="0" cellpadding="2" border="0" height="400" width="100%"><tr valign="bottom"><td height="25" colspan="4"><img border="0" height="25" width="562" src="imagemaster/titlebar5.jpg" alt="5. Content models"></td></tr><tr><td bgcolor="ffffff" width="15">&nbsp;</td><td bgcolor="ffffff" width="12">&nbsp;</td><td valign="top" align="left" bgcolor="ffffff" width="*"><p><br><table cellspacing="0" cellpadding="0" border="0"><tr><td width="90%"><font size="4" face="Verdana, Arial, sans-serif"><b>Model group definitions</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, sans-serif"><nobr>    page 5 of 6</nobr></font></td></tr></table><br><br></p><font size="2" face="Verdana, Arial, sans-serif"><p>The &lt;group&gt; element is used both for the definition of a group and for
any
                                reference to a named group. You can use a model group to define a set of
elements that
                                can be repeated through the XML instance document.
                                This is useful for building a complex type definition and other model groups.
Named
                                model groups contain a composition, which can be one of the following
                                &lt;sequence&gt;, &lt;choice&gt;, or &lt;all&gt; child elements.

                                A named model group consists of element declarations, wildcards, and other
model groups. Named
                                model groups must have a name attribute and are declared at the top level of
the schema.<br>
                                                <br>
                                                <b>Referencing a global group definition</b>
                                                <br>
                                You can use the ref attribute to reference a &lt;group&gt; by target namespace
prefix and name in order to use
                                the group description.  This is done by calling the     following method on
                                the XML Schema model:
org.eclipse.xsd.XSDModelGroupDefinition.setResolvedModelGroupDefinition(XSDModelGroupDefinition).
                                <br>
                                                <br>
                                
                                The &lt;group&gt; element contains attributes, which are described by
                                <a href="http://www.w3.org/TR/xmlschema-1/#cModel_Group_Definitions">
                                XML Schema Part 1: Structures</a> of the standard.<br>
                                                <br>
                                
                                The XML Schema model java interface for a &lt;group&gt; is
org.eclipse.xsd.XSDModelGroupDefinition and
                                can be created by calling
org.eclipse.xsd.XSDFactory.eINSTANCE.createXSDModelGroupDefinition().   
                                </p><br></font></td></tr></table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td background="../default/i/sw-gold.gif"><a border="0" href="index.html" onMouseOver="iOver('topmain'); iOver('bottommain'); self.status=mainblurb; return true;" onMouseOut="iOut('topmain'); iOut('bottommain'); self.status=''; return true;"><img alt="Main menu" border="0" src="../default/i/main.gif" name="bottommain"></a></td><td background="../default/i/sw-gold.gif"><a border="0" onMouseOver="iOver('topsection'); iOver('bottomsection'); self.status=sectionblurb; return true;" onMouseOut="iOut('topsection'); iOut('bottomsection'); self.status=''; return true;" href="index5.html"><img alt="Section menu" border="0" src="../default/i/section.gif" name="bottomsection"></a></td><td background="../default/i/sw-gold.gif"><a border="0" onMouseOver="iOver('topfeedback'); iOver('bottomfeedback'); self.status=feedbackblurb; return true;" onMouseOut="iOut('topfeedback'); iOut('bottomfeedback'); self.status=''; return true;" href="os-schema2-9-3.html"><img alt="Feedback" border="0" src="../default/i/feedback.gif" name="bottomfeedback"></a></td><td width="100%" background="../default/i/sw-gold.gif"><img src="../default/i/c.gif"></td><td background="../default/i/sw-gold.gif"><a border="0" onMouseOver="iOver('topprevious'); iOver('bottomprevious'); self.status=previousblurb; return true;" onMouseOut="iOut('topprevious'); iOut('bottomprevious'); self.status=''; return true;" href="os-schema2-5-4.html"><img alt="Previous" border="0" src="../default/i/previous.gif" name="bottomprevious"></a></td><td background="../default/i/sw-gold.gif"><a border="0" onMouseOver="iOver('topnext'); iOver('bottomnext'); self.status=nextblurb; return true;" onMouseOut="iOut('topnext'); iOut('bottomnext'); self.status=''; return true;" href="os-schema2-5-6.html"><img alt="Next" border="0" src="../default/i/next.gif" name="bottomnext"></a></td></tr><tr><td width="150" height="1" bgcolor="#000000" colspan="6"><img alt="" height="1" width="150" src="../default/i/c.gif"></td></tr></table><style>
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