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 <title>Adding complex types</title>
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 <h1 class="topictitle1">Adding complex types</h1>


 <div><p>A complex type allows elements in its content and can carry
 attributes. Complex types can be used to help determine the appropriate
 content for any instance documents generated from or associated with
 your XML schema.</p>

 <div class="section"><p>You can add as many complex types as you want to an XML
 schema.</p>
 <p>The following instructions were written for the Resource
 perspective, but they will also work in many other perspectives.</p>
 <p>To
 add a complex type to an XML schema, complete the following steps:</p>
 </div>

 <ol>
 <li class="stepexpand"><span>Open your XML schema in the XML schema editor.</span></li>

 <li class="stepexpand"><span>Right-click the Types category in the Design view, click <span class="uicontrol">Add
 Complex Type</span> and type the name for the complex type. If
 you need to change the name later, you can edit it in the <span class="uicontrol">General</span> tab
 of the Properties view.</span></li>

 <li class="stepexpand"><span>To set a base type for the complex type, right-click the
 type in the Design view and click <span class="uicontrol">Set Base Type</span>. </span>
  You can either set a base type for your complex type, or you
 can add a content model to it (which represents any data that can
 be contained inside an element), but you cannot do both. For more
 information about content models, see <a href="taddcmod.html">Adding content models</a>.</li>

 <li class="stepexpand"><span>Your new type can be derived from its base type either
 by extension or restriction. By default, the derivation is set to
 extension. To change how the type is derived, click the <span class="uicontrol">General</span> tab
 in the Properties view and select <span class="uicontrol">restriction</span> or <span class="uicontrol">extension</span> from
 the <span class="uicontrol">Inherited By</span> list. </span></li>

 <li class="stepexpand"><span>To add attributes to your complex type, in the Design view,
 right-click your complex type and select <span class="uicontrol">Add Attribute</span>. </span>
  An attribute associates an attribute name with a specific type
 and value.
 <ol type="a">
 <li><span>To set the name of the attribute, in the Design view,
 double-click the name of the attribute and type the name.</span>
 </li>

 <li><span>To set the type of the attribute, in the Design view,
 double-click the attribute type and then select the new type from
 the list.</span></li>

 </ol>

  For information about adding attributes, attribute references,
 and <kbd class="userinput">any</kbd> attributes, see <a href="taddagrp.html">Adding attribute groups</a>.</li>

 <li class="stepexpand"><span>You can further define your complex type in the Properties
 view:</span>
 <ol type="a">
 <li class="substepexpand"><span>Click the <span class="uicontrol">Documentation</span> tab if
 you want to provide any information about this complex type. </span>
  The <span class="uicontrol">Documentation</span> page is used for human
 readable material, such as a description.</li>

 <li class="substepexpand"><span>Click the <span class="uicontrol">Extensions</span> tab if you
 want to add application information elements to your annotations of
 schema components. </span> The <span class="uicontrol">Extensions</span> page
 allows you to specify the schema and add XML content to your annotations.
 </li>

 </ol>

 </li>

 </ol>

 </div>

 <div><div class="reltasks"><strong>Related tasks</strong><br />
 <div><a href="../topics/taddcmod.html" title="A content model is the representation of any data that can be contained inside an element, global element, complex type, or group. It is a formal description of the structure and permissible content of an element, global element, complex type, or group, which may be used to validate a document instance.">Adding content models</a></div>
 </div>
 </div>

 </body>
 </html>
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	<head>
	<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
	<meta name="copyright" content="Copyright (c) 2000, 2009 IBM Corporation and others. All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html. Contributors: IBM Corporation - initial API and implementation" />
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	<meta content="task" name="DC.Type" />
	<meta name="DC.Title" content="Adding complex types" />
	<meta name="abstract" content="A complex type allows elements in its content and can carry attributes. Complex types can be used to help determine the appropriate content for any instance documents generated from or associated with your XML schema." />
	<meta name="description" content="A complex type allows elements in its content and can carry attributes. Complex types can be used to help determine the appropriate content for any instance documents generated from or associated with your XML schema." />
	<meta content="XML schema editor, complex types, XML schema files" name="DC.subject" />
	<meta content="XML schema editor, complex types, XML schema files" name="keywords" />
	<meta scheme="URI" name="DC.Relation" content="../topics/taddcmod.html" />
	<meta content="XHTML" name="DC.Format" />
	<meta content="taddcmxt" name="DC.Identifier" />
	<meta content="en-us" name="DC.Language" />
	<link href="../../org.eclipse.wst.doc.user/common.css" type="text/css" rel="stylesheet" />
	<title>Adding complex types</title>
	</head>
	<body id="taddcmxt"><a name="taddcmxt"><!-- --></a>


	<h1 class="topictitle1">Adding complex types</h1>




	<div><p>A complex type allows elements in its content and can carry
	attributes. Complex types can be used to help determine the appropriate
	content for any instance documents generated from or associated with
	your XML schema.</p>

	<div class="section"><p>You can add as many complex types as you want to an XML
	schema.</p>
	<p>The following instructions were written for the Resource
	perspective, but they will also work in many other perspectives.</p>
	<p>To
	add a complex type to an XML schema, complete the following steps:</p>
	</div>

	<ol>
	<li class="stepexpand"><span>Open your XML schema in the XML schema editor.</span></li>

	<li class="stepexpand"><span>Right-click the Types category in the Design view, click <span class="uicontrol">Add
	Complex Type</span> and type the name for the complex type. If
	you need to change the name later, you can edit it in the <span class="uicontrol">General</span> tab
	of the Properties view.</span></li>

	<li class="stepexpand"><span>To set a base type for the complex type, right-click the
	type in the Design view and click <span class="uicontrol">Set Base Type</span>. </span>
	You can either set a base type for your complex type, or you
	can add a content model to it (which represents any data that can
	be contained inside an element), but you cannot do both. For more
	information about content models, see <a href="taddcmod.html">Adding content models</a>.</li>

	<li class="stepexpand"><span>Your new type can be derived from its base type either
	by extension or restriction. By default, the derivation is set to
	extension. To change how the type is derived, click the <span class="uicontrol">General</span> tab
	in the Properties view and select <span class="uicontrol">restriction</span> or <span class="uicontrol">extension</span> from
	the <span class="uicontrol">Inherited By</span> list. </span></li>

	<li class="stepexpand"><span>To add attributes to your complex type, in the Design view,
	right-click your complex type and select <span class="uicontrol">Add Attribute</span>. </span>
	An attribute associates an attribute name with a specific type
	and value.
	<ol type="a">
	<li><span>To set the name of the attribute, in the Design view,
	double-click the name of the attribute and type the name.</span>
	</li>

	<li><span>To set the type of the attribute, in the Design view,
	double-click the attribute type and then select the new type from
	the list.</span></li>

	</ol>

	For information about adding attributes, attribute references,
	and <kbd class="userinput">any</kbd> attributes, see <a href="taddagrp.html">Adding attribute groups</a>.</li>

	<li class="stepexpand"><span>You can further define your complex type in the Properties
	view:</span>
	<ol type="a">
	<li class="substepexpand"><span>Click the <span class="uicontrol">Documentation</span> tab if
	you want to provide any information about this complex type. </span>
	The <span class="uicontrol">Documentation</span> page is used for human
	readable material, such as a description.</li>

	<li class="substepexpand"><span>Click the <span class="uicontrol">Extensions</span> tab if you
	want to add application information elements to your annotations of
	schema components. </span> The <span class="uicontrol">Extensions</span> page
	allows you to specify the schema and add XML content to your annotations.
	</li>

	</ol>

	</li>

	</ol>

	</div>

	<div><div class="reltasks"><strong>Related tasks</strong><br />
	<div><a href="../topics/taddcmod.html" title="A content model is the representation of any data that can be contained inside an element, global element, complex type, or group. It is a formal description of the structure and permissible content of an element, global element, complex type, or group, which may be used to validate a document instance.">Adding content models</a></div>
	</div>
	</div>

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