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 <h1 class="topictitle1">Adding global elements</h1>


 <div><p>A global element is an element with a global scope. It is one that
 has been declared as part of the main schema rather than as part of a content
 model.</p>

 <div class="section"><p>The following instructions were written for the Resource perspective,
 but they will also work in many other perspectives.</p>
 <p>To add a global
 element, follow these steps:</p>
 </div>

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

 <li class="stepexpand"><span>In the Outline view, select your schema.</span> The entire
 schema and its contents should be displayed in the Graph view.</li>

 <li class="stepexpand"><span>In the Graph view, right click in the <strong>Elements</strong> section and
 click <span class="uicontrol">Add Element</span>.</span></li>

 <li class="stepexpand"><span>In the Properties view, click the <span class="uicontrol">General</span> tab,
 and type a new name for the global element in the <span class="uicontrol">Name</span> field.</span>
 </li>

 <li class="stepexpand"><span>In the Properties view, you can select the attribute <span class="uicontrol">Type</span> from
 the predefined list in the menu next to the <span class="uicontrol">Type</span> field.</span>
  <p>Alternately, you can select <span class="uicontrol">Browse</span> from the
 list for more options. </p>
 <div class="p">The Set Type dialog will appear, and lists all
 built-in and user-defined types currently available. You can change the <span class="uicontrol">Scope</span> of
 the list by selecting one of the following options:<ul>
 <li><span class="uicontrol">Workspace</span>. Lists all of the types available in
 your workspace. </li>

 <li><span class="uicontrol">Enclosing Project</span>. Lists all of the types available
 in the project that contains your file. </li>

 <li>(Default) <span class="uicontrol">Current Resource</span>. List all of the types
 available in your current file.</li>

 <li><span class="uicontrol">Working Sets</span>. List all the types available within
 the selected working set.</li>

 </ul>
 </div>
 <p>Select the type you want in the type list, then click <span class="uicontrol">OK</span>. </p>

 </li>

 <li class="stepexpand"><span>(Optional) Click the <span class="uicontrol">Other</span> tab.</span> In
 this page, you can specify the following various values for the global element:
 <ul>
 <li><span class="uicontrol">abstract</span>. Click <strong>true </strong>if you want the
 global element to be abstract. When a global element is declared to be abstract,
 it cannot be used in an instance document. Instead, a member of that global
 element's substitution group must appear in the instance document.</li>

 <li><span class="uicontrol">block</span>. This field determines whether the global
 element may be replaced by an element derived from it.</li>

 <li><span class="uicontrol">final</span>. This field determines whether this global
 element may be derived from.</li>

 <li><span class="uicontrol">fixed/default</span>. Click the <span class="uicontrol">Browse</span> button
 and select the <span class="uicontrol">Fixed</span> or <span class="uicontrol">Default</span> radio
 button and specify an appropriate value. If you select <strong>Fixed</strong>, the global
 element has a fixed value, which cannot be changed. If you select <strong>Default</strong>,
 the element has a default value.</li>

 <li><span class="uicontrol">form</span>. Use this field to indicate if the appearance
 of this global element in an instance of the XML schema (that is, an XML file
 associated with the XML schema) must be qualified by a namespace.</li>

 <li><span class="uicontrol">nillable</span>. Select <strong>true</strong> if you do not
 want the global element to be able to have any child elements, only attributes. </li>

 <li><span class="uicontrol">substitutionGroup</span>. A substitution group allows
 elements to be substituted for other elements.</li>

 </ul>

 </li>

 <li class="stepexpand"><span>Click the <span class="uicontrol">Attributes</span> tab</span> You
 can use this page to add attributes, attribute references, attributes group
 references, and <samp class="codeph">any</samp> attributes to your global element.
 </li>

 <li class="stepexpand"><span>An attribute associates an attribute name with a specific type
 and value. To add an attribute, right-click in the Attributes page, and click <span class="uicontrol">Add
 Attribute</span>.</span> You can specify the following values for
 an attribute
 <ul>
 <li><span class="uicontrol">fixed/default</span>. Click the <span class="uicontrol">Browse</span> button
 and select the <span class="uicontrol">Fixed</span> or <span class="uicontrol">Default</span> radio
 button and specify an appropriate value. If you select <strong>Fixed</strong>, the attribute
 has a fixed value, which cannot be changed. If you select <strong>Default</strong>,
 the attribute has a default value.</li>

 <li><span class="uicontrol">form</span>. Use this field to indicate if the appearance
 of this attribute in an instance of the XML schema must be qualified by a
 namespace.</li>

 <li><span class="uicontrol">name</span>. Enter the name of the attribute.</li>

 <li><span class="uicontrol">type</span>. Click the <span class="uicontrol">Browse</span> button
 and select the type of the attribute. </li>

 <li><span class="uicontrol">use</span>. This field indicates how an attribute
 can be used in an instance document. If you select <strong>optional</strong>, the attribute
 can appear once, but it does not have to. If you select <strong>required</strong>, the
 attribute must appear once. If you select <strong>prohibited</strong>, the attribute
 must not appear. <strong>Note</strong>: If you selected the <span class="uicontrol">Default</span> radio
 button, you must select <strong>optional</strong> in this field, otherwise the default
 value will not be valid.</li>

 </ul>

 </li>

 <li class="stepexpand"><span>An attribute reference provides a reference to a global attribute.
 To add an attribute reference, right-click in the Attributes page, and click <span class="uicontrol">Add
 Attribute Ref</span>.</span> A declaration that references a global
 attribute enables the referenced attribute to appear in the instance document
 in the context of the referencing declaration. The menu option to add an attribute
 reference only appears if there are global attributes defined elsewhere in
 the document.
 <ol type="a">
 <li><span>Select the reference, then select the global attribute you want
 it to reference from the <span class="uicontrol">ref</span> list.</span></li>

 </ol>

 </li>

 <li class="stepexpand"><span>An attribute group reference provides a reference to an attribute
 group. To add an attribute group reference, right-click in the Attributes
 page, and click <span class="uicontrol">Add Attribute Group Ref</span>.</span> A
 declaration that references an attribute group enables the referenced attribute
 group to appear in the instance document in the context of the referencing
 declaration. The menu option to add an attribute group reference only appears
 if there are attribute groups defined elsewhere in the document.
 <ol type="a">
 <li><span>Select the reference, then select the attribute group you want
 it to reference from the <span class="uicontrol">ref</span> list.</span></li>

 </ol>

 </li>

 <li class="stepexpand"><span>An <samp class="codeph">any</samp> element enables element content according
 to namespaces, and the corresponding <samp class="codeph">any</samp> attribute element
 enables attributes to appear in elements. To add an <samp class="codeph">any</samp> attribute,
 right-click in the Attributes page and click <span class="uicontrol">Add Any Attribute</span>.</span>
  You can specify the following values for an <samp class="codeph">any</samp> attribute:
 <ul>
 <li>For a <strong>namespace</strong> value, you can select <strong>##any</strong> (this allows
 any well-formed XML from any namespace), <strong>##local </strong> (this allows any
 well-formed XML that is not declared to be in a namespace), <strong>##other </strong> (this
 allows any well-formed XML that is not from the target namespace of the type
 being defined) or <strong>##targetNamespace </strong> (which is shorthand for the target
 namespace of the type being defined). </li>

 <li>For a <span class="uicontrol">processContents</span> value, you can select <strong>skip</strong> (the
 XML processor will not validate the attribute content at all), <strong>lax</strong> (the
 XML processor will validate the attribute content as much as it can), or <strong>strict</strong> (the
 XML processor will validate all the attribute content).</li>

 </ul>

 </li>

 <li class="stepexpand"><span>Click the <span class="uicontrol">Documentation</span> tab if you want
 to provide any information about this global element.</span> The <span class="uicontrol">Documentation</span> page
 is used for human readable material, such as a description, and the <span class="uicontrol">App
 Info</span> page can be used to provide information for applications.
 </li>

 </ol>

 <div class="section">You can add a content model to a global element, which is the representation
 of any data that can be contained inside the global element. For more information
 about working with content models, refer to the related tasks.</div>

 </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><a href="../topics/taddelmr.html" title="An element reference provides a reference to a global element. A declaration that references a global element enables the referenced global element to appear in the instance document in the context of the referencing declaration.">Adding element references</a></div>
 </div>
 </div>

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	<meta content="task" name="DC.Type" />
	<meta name="DC.Title" content="Adding global elements" />
	<meta name="abstract" content="A global element is an element with a global scope. It is one that has been declared as part of the main schema rather than as part of a content model." />
	<meta name="description" content="A global element is an element with a global scope. It is one that has been declared as part of the main schema rather than as part of a content model." />
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	<title>Adding global elements</title>
	</head>
	<body id="taddglem"><a name="taddglem"><!-- --></a>


	<h1 class="topictitle1">Adding global elements</h1>




	<div><p>A global element is an element with a global scope. It is one that
	has been declared as part of the main schema rather than as part of a content
	model.</p>

	<div class="section"><p>The following instructions were written for the Resource perspective,
	but they will also work in many other perspectives.</p>
	<p>To add a global
	element, follow these steps:</p>
	</div>

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

	<li class="stepexpand"><span>In the Outline view, select your schema.</span> The entire
	schema and its contents should be displayed in the Graph view.</li>

	<li class="stepexpand"><span>In the Graph view, right click in the <strong>Elements</strong> section and
	click <span class="uicontrol">Add Element</span>.</span></li>

	<li class="stepexpand"><span>In the Properties view, click the <span class="uicontrol">General</span> tab,
	and type a new name for the global element in the <span class="uicontrol">Name</span> field.</span>
	</li>

	<li class="stepexpand"><span>In the Properties view, you can select the attribute <span class="uicontrol">Type</span> from
	the predefined list in the menu next to the <span class="uicontrol">Type</span> field.</span>
	<p>Alternately, you can select <span class="uicontrol">Browse</span> from the
	list for more options. </p>
	<div class="p">The Set Type dialog will appear, and lists all
	built-in and user-defined types currently available. You can change the <span class="uicontrol">Scope</span> of
	the list by selecting one of the following options:<ul>
	<li><span class="uicontrol">Workspace</span>. Lists all of the types available in
	your workspace. </li>

	<li><span class="uicontrol">Enclosing Project</span>. Lists all of the types available
	in the project that contains your file. </li>

	<li>(Default) <span class="uicontrol">Current Resource</span>. List all of the types
	available in your current file.</li>

	<li><span class="uicontrol">Working Sets</span>. List all the types available within
	the selected working set.</li>

	</ul>
	</div>
	<p>Select the type you want in the type list, then click <span class="uicontrol">OK</span>. </p>

	</li>

	<li class="stepexpand"><span>(Optional) Click the <span class="uicontrol">Other</span> tab.</span> In
	this page, you can specify the following various values for the global element:
	<ul>
	<li><span class="uicontrol">abstract</span>. Click <strong>true </strong>if you want the
	global element to be abstract. When a global element is declared to be abstract,
	it cannot be used in an instance document. Instead, a member of that global
	element's substitution group must appear in the instance document.</li>

	<li><span class="uicontrol">block</span>. This field determines whether the global
	element may be replaced by an element derived from it.</li>

	<li><span class="uicontrol">final</span>. This field determines whether this global
	element may be derived from.</li>

	<li><span class="uicontrol">fixed/default</span>. Click the <span class="uicontrol">Browse</span> button
	and select the <span class="uicontrol">Fixed</span> or <span class="uicontrol">Default</span> radio
	button and specify an appropriate value. If you select <strong>Fixed</strong>, the global
	element has a fixed value, which cannot be changed. If you select <strong>Default</strong>,
	the element has a default value.</li>

	<li><span class="uicontrol">form</span>. Use this field to indicate if the appearance
	of this global element in an instance of the XML schema (that is, an XML file
	associated with the XML schema) must be qualified by a namespace.</li>

	<li><span class="uicontrol">nillable</span>. Select <strong>true</strong> if you do not
	want the global element to be able to have any child elements, only attributes. </li>

	<li><span class="uicontrol">substitutionGroup</span>. A substitution group allows
	elements to be substituted for other elements.</li>

	</ul>

	</li>

	<li class="stepexpand"><span>Click the <span class="uicontrol">Attributes</span> tab</span> You
	can use this page to add attributes, attribute references, attributes group
	references, and <samp class="codeph">any</samp> attributes to your global element.
	</li>

	<li class="stepexpand"><span>An attribute associates an attribute name with a specific type
	and value. To add an attribute, right-click in the Attributes page, and click <span class="uicontrol">Add
	Attribute</span>.</span> You can specify the following values for
	an attribute
	<ul>
	<li><span class="uicontrol">fixed/default</span>. Click the <span class="uicontrol">Browse</span> button
	and select the <span class="uicontrol">Fixed</span> or <span class="uicontrol">Default</span> radio
	button and specify an appropriate value. If you select <strong>Fixed</strong>, the attribute
	has a fixed value, which cannot be changed. If you select <strong>Default</strong>,
	the attribute has a default value.</li>

	<li><span class="uicontrol">form</span>. Use this field to indicate if the appearance
	of this attribute in an instance of the XML schema must be qualified by a
	namespace.</li>

	<li><span class="uicontrol">name</span>. Enter the name of the attribute.</li>

	<li><span class="uicontrol">type</span>. Click the <span class="uicontrol">Browse</span> button
	and select the type of the attribute. </li>

	<li><span class="uicontrol">use</span>. This field indicates how an attribute
	can be used in an instance document. If you select <strong>optional</strong>, the attribute
	can appear once, but it does not have to. If you select <strong>required</strong>, the
	attribute must appear once. If you select <strong>prohibited</strong>, the attribute
	must not appear. <strong>Note</strong>: If you selected the <span class="uicontrol">Default</span> radio
	button, you must select <strong>optional</strong> in this field, otherwise the default
	value will not be valid.</li>

	</ul>

	</li>

	<li class="stepexpand"><span>An attribute reference provides a reference to a global attribute.
	To add an attribute reference, right-click in the Attributes page, and click <span class="uicontrol">Add
	Attribute Ref</span>.</span> A declaration that references a global
	attribute enables the referenced attribute to appear in the instance document
	in the context of the referencing declaration. The menu option to add an attribute
	reference only appears if there are global attributes defined elsewhere in
	the document.
	<ol type="a">
	<li><span>Select the reference, then select the global attribute you want
	it to reference from the <span class="uicontrol">ref</span> list.</span></li>

	</ol>

	</li>

	<li class="stepexpand"><span>An attribute group reference provides a reference to an attribute
	group. To add an attribute group reference, right-click in the Attributes
	page, and click <span class="uicontrol">Add Attribute Group Ref</span>.</span> A
	declaration that references an attribute group enables the referenced attribute
	group to appear in the instance document in the context of the referencing
	declaration. The menu option to add an attribute group reference only appears
	if there are attribute groups defined elsewhere in the document.
	<ol type="a">
	<li><span>Select the reference, then select the attribute group you want
	it to reference from the <span class="uicontrol">ref</span> list.</span></li>

	</ol>

	</li>

	<li class="stepexpand"><span>An <samp class="codeph">any</samp> element enables element content according
	to namespaces, and the corresponding <samp class="codeph">any</samp> attribute element
	enables attributes to appear in elements. To add an <samp class="codeph">any</samp> attribute,
	right-click in the Attributes page and click <span class="uicontrol">Add Any Attribute</span>.</span>
	You can specify the following values for an <samp class="codeph">any</samp> attribute:
	<ul>
	<li>For a <strong>namespace</strong> value, you can select <strong>##any</strong> (this allows
	any well-formed XML from any namespace), <strong>##local </strong> (this allows any
	well-formed XML that is not declared to be in a namespace), <strong>##other </strong> (this
	allows any well-formed XML that is not from the target namespace of the type
	being defined) or <strong>##targetNamespace </strong> (which is shorthand for the target
	namespace of the type being defined). </li>

	<li>For a <span class="uicontrol">processContents</span> value, you can select <strong>skip</strong> (the
	XML processor will not validate the attribute content at all), <strong>lax</strong> (the
	XML processor will validate the attribute content as much as it can), or <strong>strict</strong> (the
	XML processor will validate all the attribute content).</li>

	</ul>

	</li>

	<li class="stepexpand"><span>Click the <span class="uicontrol">Documentation</span> tab if you want
	to provide any information about this global element.</span> The <span class="uicontrol">Documentation</span> page
	is used for human readable material, such as a description, and the <span class="uicontrol">App
	Info</span> page can be used to provide information for applications.
	</li>

	</ol>

	<div class="section">You can add a content model to a global element, which is the representation
	of any data that can be contained inside the global element. For more information
	about working with content models, refer to the related tasks.</div>

	</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><a href="../topics/taddelmr.html" title="An element reference provides a reference to a global element. A declaration that references a global element enables the referenced global element to appear in the instance document in the context of the referencing declaration.">Adding element references</a></div>
	</div>
	</div>

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