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var emailAbstract="This tutorial gives you the building blocks you need to set up and work with the XML Schema Infoset Model. It shows how to set up the development environment, create and load XML Schema models, work with namespaces, and reuse definitions across XML Schema models. This tutorial is the first of a two-part series that introduces you to XML Schema concepts and the XML Schema Infoset model.";
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var menu2blurb="XML Schema fundamentals";
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var menu4blurb="Using XML Schema Infoset Model classes";
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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 1"></td><td width="*" valign="bottom" align="right"><a border="0" href="os-schema1.zip"><img alt="ZIP" border="0" src="../default/i/icon-zip.gif"></a><a border="0" href="os-schema1-ltr.pdf"><img alt="PDF (letter)" border="0" src="../default/i/icon-pdf-ltr.gif"></a><a border="0" href="os-schema1-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="index4.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-schema1-8-3.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-schema1-4-2.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-schema1-4-4.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/titlebar4.jpg" alt="4. Using XML Schema Infoset Model classes"></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>Component hierarchy</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, sans-serif"><nobr> page 3 of 9</nobr></font></td></tr></table><br><br></p><font size="2" face="Verdana, Arial, sans-serif"><p>
The abstract XML Schema components, as described in
<a href="http://www.w3.org/TR/xmlschema-1">
XML Schema Part 1: Structures</a>
of the Standard, are related according to the following
hierarchy:
<br>
<img alt="Component hierarchy (Part 1: Structures)" src="images/uml-comphierarchy.jpg" width="600" height="426">
</p><p>
The figure above displays the hierarchy of the XML
Schema Infoset model. The classes in light blue
represent abstract classes, whereas the classes in
light orange represent the concrete classes.
Here is a short description of some of the classes that
you will need to understand:
<ul><li>
<b>XSDComponent</b>: is the base class for all of the
XML Schema Infoset model classes.
</li><li>
<b>XSDSchema</b>: is the concrete class representing
the xml schema root object (&lt;xsd:schema
...&gt;)
</li><li>
<b>XSDAnnotation</b>: is the concrete class
representing xml schema components annotations
(&lt;xsd:annotation&gt;)
</li><li>
<b>XSDSimpleTypeDefinition</b>: is the concrete class
representing a simple type (&lt;xsd:simpleType ...&gt;)
</li><li>
<b>XSDComplexTypeDefinition</b>: is the concrete class
representing a complex type (&lt;xsd:complexType ...&gt;)
</li><li>
<b>XSDElementDeclaration</b>: is the concrete class
representing an element; either global, local or
reference (&lt;xsd:element ...&gt;)
</li><li>
<b>XSDAttributeDeclaration</b>: is the concrete class
representing an attribute; either global,local
or reference (&lt;xsd:attribute ...&gt;)
</li><li>
<b>XSDAttributeGroupDefinition</b>: is the concrete
class representing an attribute group (&lt;xsd:attributeGroup ...&gt;)
</li><li>
<b>XSDModelGroupDefinition</b>: is the concrete class
representing a group; either global or reference
(&lt;xsd:group ...&gt;)
</li><li>
<b>XSDModelGroup</b>: is the concrete class
representing a local group (&lt;xsd:sequence&gt;, &lt;xsd:choice&gt;or
&lt;xsd:all&gt;)
</li><li>
<b>XSDWildCard</b>: is the concrete class representing
a wild card element or attribute (&lt;xsd:any&gt; or &lt;xsd:anyAttribute&gt;)
</li></ul>
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