Internal DTD

<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <meta name="keywords" content="internal dtd, cdata sections, duplicate element names, syntax, programming, how to, xml tutorial, extensible markup language, learn xml"> <meta name="Description" content="Learn about internal DTDs with this free XML tutorial."> <link rel="canonical" href="https://www.quackit.com/xml/tutorial/dtd_internal_dtd.cfm"> <title>Internal DTD</title> <script src="//ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script> <link rel="shortcut icon" href="/pix/favicon96.png"> <link rel="apple-touch-icon" href="/pix/apple-touch-icon.png"> <link rel="preconnect" href="https://fonts.googleapis.com"> <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin> <link href="https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,400;0,700;1,400&display=swap" rel="stylesheet"> <link href="/common/css/master.45.min.css" rel="stylesheet"> <script async src="https://cdn.fuseplatform.net/publift/tags/2/3499/fuse.js"></script>  <script async src="https://www.googletagmanager.com/gtag/js?id=G-Q3H025ZKLN"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-Q3H025ZKLN'); </script> </head> <body> <header class="site-header"> <div class="site-header-base"> <div class="site-logo"> <a title="Quackit Homepage" target="_top" href="/"><img src="/pix/quackit_logo_watermark.png" width="87" height="33" alt="Quackit Logo"></a> </div> <button id="site-nav-toggler" class="site-nav-toggler" aria-expanded="false" aria-controls="site-nav"> <span class="sr-only">Toggle navigation</span> ☰ </button> </div> <nav id="site-nav" class="site-nav"> <div class="site-links"> <ul> <li><a href="/"><i class="fa fa-home"></i> <span class="sr-only">Home</span></a></li> <li><a href="/html/">HTML</a></li> <li><a href="/css/">CSS</a></li> <li><a href="/scripting/">Scripting</a></li> <li><a href="/database/">Database</a></li> </ul> </div> <div class="site-search-top"> <form action="/search/" id="cse-search-box-bottom" class="site-search"> <div> <input type="hidden" name="cx" value="partner-pub-6331358926293806:98x0fk-bbgi"> <input type="hidden" name="cof" value="FORID:10"> <input type="hidden" name="ie" value="ISO-8859-1"> <input type="text" name="q" size="20" class="site-search-input"> <button type="submit" name="sa" class="site-search-button"><i class="fa fa-search"></i></button> </div> </form> </div> </nav> </header> <div class="main"> <article class="content"> <h1 class="page-title">Internal DTD</h1> <div class="ad ad-top">  <div data-fuse="23059883623"></div> </div> <ul class="pager"> <li><a href="/xml/tutorial/dtd_doctype.cfm"><i class="fa fa-long-arrow-left" aria-hidden="true"></i> DTD Doctype</a></li> <li><a href="/xml/tutorial/dtd_external_dtd.cfm">External DTD <i class="fa fa-long-arrow-right" aria-hidden="true"></i></a></li> </ul> <p class="lead">Whether you use an <a href="/xml/tutorial/dtd_external_dtd.cfm">external</a> or internal DTD, the actual syntax for the DTD is the same — the same code could just as easily be part of an internal DTD or an external one. The only difference between internal and external is in the way it's declared with <a href="/xml/tutorial/dtd_doctype.cfm">DOCTYPE</a>.</p> <p>Using an internal DTD, the code is placed between the DOCTYPE tags (eg, <code><!DOCTYPE tutorials [</code> and <code>]></code>.</p> <div class="ad">  <div data-fuse="23059883629"></div> </div> <h2>Example Internal DTD</h2> <p>This is an example of an internal DTD. It's internal because the DTD is included in the target XML document:</p> <script src="/common/js/codemirror/lib/codemirror.js"></script> <script src="/common/js/codemirror/mode/htmlmixed/htmlmixed.js"></script> <script src="/common/js/codemirror/mode/css/css.js"></script> <script src="/common/js/codemirror/mode/javascript/javascript.js"></script> <script src="/common/js/codemirror/mode/xml/xml.js"></script> <div class="code-only"> <textarea id="example1" autocomplete="off" spellcheck="false"><?xml version="1.0" standalone="yes"?>
<!DOCTYPE tutorials [
<!ELEMENT tutorials (tutorial)+>
<!ELEMENT tutorial (name,url)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT url (#PCDATA)>
<!ATTLIST tutorials type CDATA #REQUIRED>
]>
<tutorials type="web">
 <tutorial>
 <name>XML Tutorial</name>
 <url>https://www.quackit.com/xml/tutorial</url>
 </tutorial>
 <tutorial>
 <name>HTML Tutorial</name>
 <url>https://www.quackit.com/html/tutorial</url>
 </tutorial>
</tutorials></textarea> </div> <script> var exampleCode1 = CodeMirror.fromTextArea(document.getElementById("example1"), { mode: "htmlmixed", tabMode: "indent", styleActiveLine: false, lineNumbers: false, lineWrapping: true, theme: "q-dark" }); </script> <ul class="pager"> <li><a href="/xml/tutorial/dtd_doctype.cfm"><i class="fa fa-long-arrow-left" aria-hidden="true"></i> DTD Doctype</a></li> <li><a href="/xml/tutorial/dtd_external_dtd.cfm">External DTD <i class="fa fa-long-arrow-right" aria-hidden="true"></i></a></li> </ul> </article> <div class="sidebar"> <nav> <ul> <li> <h3><a href="/xml/tutorial/" title="">XML Tutorial</a></h3> <ul> <li><a href="/xml/tutorial/about_xml.cfm" title="">About XML</a></li> <li><a href="/xml/tutorial/xml_viewers.cfm" title="">XML Viewers</a></li> <li><a href="/xml/tutorial/xml_editors.cfm" title="">XML Editors</a></li> <li><a href="/xml/tutorial/xml_documents.cfm" title="">XML Documents</a></li> <li><a href="/xml/tutorial/xml_syntax.cfm" title="">XML Syntax</a></li> <li><a href="/xml/tutorial/xml_elements.cfm" title="">XML Elements</a></li> <li><a href="/xml/tutorial/xml_attributes.cfm" title="">XML Attributes</a></li> <li><a href="/xml/tutorial/xml_css.cfm" title="">XML with CSS</a></li> <li><a href="/xml/tutorial/xml_xsl.cfm" title="">XML with XSL</a></li> <li><a href="/xml/tutorial/xml_namespace.cfm" title="">XML Namespace</a></li> <li><a href="/xml/tutorial/xml_local_namespace.cfm" title="">XML Local Namespace</a></li> <li><a href="/xml/tutorial/xml_default_namespace.cfm" title="">XML Default Namespace</a></li> <li><a href="/xml/tutorial/xml_entities.cfm" title="">XML Entities</a></li> <li><a href="/xml/tutorial/xml_creating_entities.cfm" title="">XML Creating Entities</a></li> <li><a href="/xml/tutorial/xml_cdata.cfm" title="">XML CDATA</a></li> </ul> </li> <li> <h3 class="heading-only">DTD</h3> <ul> <li><a href="/xml/tutorial/dtd_introduction.cfm" title="">DTD Introduction</a></li> <li><a href="/xml/tutorial/dtd_doctype.cfm" title="">DTD DOCTYPE</a></li> <li><a href="/xml/tutorial/dtd_internal_dtd.cfm" title="">DTD Internal</a></li> <li><a href="/xml/tutorial/dtd_external_dtd.cfm" title="">DTD External</a></li> <li><a href="/xml/tutorial/dtd_combined_dtd.cfm" title="">DTD Combined</a></li> <li><a href="/xml/tutorial/dtd_fpi.cfm" title="">DTD FPI</a></li> <li><a href="/xml/tutorial/dtd_elements.cfm" title="">DTD Elements</a></li> <li><a href="/xml/tutorial/dtd_element_operators.cfm" title="">DTD Element Operators</a></li> <li><a href="/xml/tutorial/dtd_attributes.cfm" title="">DTD Attributes</a></li> <li><a href="/xml/tutorial/dtd_attribute_default_values.cfm" title="">DTD Attribute Default Values</a></li> <li><a href="/xml/tutorial/dtd_attribute_types.cfm" title="">DTD Attribute Types</a></li> <li><a href="/xml/tutorial/dtd_general_entities.cfm" title="">DTD General Entities</a></li> <li><a href="/xml/tutorial/dtd_parameter_entities.cfm" title="">DTD Parameter Entities</a></li> <li><a href="/xml/tutorial/dtd_embedded_images.cfm" title="">DTD Embedded Images</a></li> </ul> </li> <li> <h3 class="heading-only">XSLT</h3> <ul> <li><a href="/xml/tutorial/xslt_introduction.cfm" title="">XSLT Introduction</a></li> <li><a href="/xml/tutorial/xslt_example.cfm" title="">XSLT Example</a></li> <li><a href="/xml/tutorial/xslt_syntax.cfm" title="">XSLT Syntax</a></li> <li><a href="/xml/tutorial/xslt_template.cfm" title="">XSLT <template></a></li> <li><a href="/xml/tutorial/xslt_apply-templates.cfm" title="">XSLT <apply-templates></a></li> <li><a href="/xml/tutorial/xslt_value-of.cfm" title="">XSLT <value-of></a></li> <li><a href="/xml/tutorial/xslt_for-each.cfm" title="">XSLT <for-each></a></li> <li><a href="/xml/tutorial/xslt_sort.cfm" title="">XSLT <sort></a></li> <li><a href="/xml/tutorial/xslt_if.cfm" title="">XSLT <if></a></li> <li><a href="/xml/tutorial/xslt_choose.cfm" title="">XSLT <choose></a></li> </ul> </li> <li> <h3 class="heading-only">XPath</h3> <ul> <li><a href="/xml/tutorial/xpath_introduction.cfm" title="">XPath Introduction</a></li> <li><a href="/xml/tutorial/xpath_location_path.cfm" title="">XPath Location Path</a></li> <li><a href="/xml/tutorial/xpath_location_path_absolute.cfm" title="">XPath Location Path - Absolute</a></li> <li><a href="/xml/tutorial/xpath_location_path_relative.cfm" title="">XPath Location Path - Relative</a></li> <li><a href="/xml/tutorial/xpath_attributes.cfm" title="">XPath Attributes</a></li> <li><a href="/xml/tutorial/xpath_axis.cfm" title="">XPath Axis</a></li> <li><a href="/xml/tutorial/xpath_node_test.cfm" title="">XPath Node Test</a></li> <li><a href="/xml/tutorial/xpath_predicate.cfm" title="">XPath Predicate</a></li> <li><a href="/xml/tutorial/xpath_node_set.cfm" title="">XPath Node Set</a></li> <li><a href="/xml/tutorial/xpath_comparison_operators.cfm" title="">XPath Comparison Operators</a></li> <li><a href="/xml/tutorial/xpath_boolean_operators.cfm" title="">XPath Boolean Operators</a></li> <li><a href="/xml/tutorial/xpath_number_operators.cfm" title="">XPath Number Operators</a></li> <li><a href="/xml/tutorial/xpath_string_functions.cfm" title="">XPath String Functions</a></li> <li><a href="/xml/tutorial/xml_tutorial_summary.cfm" title="">Tutorial Summary</a></li> </ul> </li> </ul> </nav> <div class="ad ad-left">  <div data-fuse="23059511712"></div> </div> </div> <div class="ads"> <div class="ad ad-right">  <div data-fuse="23059883626"></div> </div> </div> </div> <div class="searchbox-bottom"> <form action="/search/" id="cse-search-box-bottom" class="site-search"> <div> <input type="hidden" name="cx" value="partner-pub-6331358926293806:npmuvy-i8kk"> <input type="hidden" name="cof" value="FORID:10"> <input type="hidden" name="ie" value="ISO-8859-1"> <input type="text" name="q" size="30" class="site-search-input"> <button type="submit" name="sa" class="site-search-button"><i class="fa fa-search"></i></button> </div> </form> <script src="//cse.google.com/cse/brand?form=cse-search-box-bottom&lang=en"></script> </div> <footer> <p class="about"><a href="/"><i class="fa fa-home"></i> Home</a> | <a href="/about.cfm" rel="nofollow">About</a> | <a href="/contact.cfm" rel="nofollow">Contact</a> | <a href="/terms_of_use.cfm" rel="nofollow">Terms of Use</a> | <a href="/privacy_policy.cfm" rel="nofollow">Privacy Policy</a></p> <p>© Copyright 2000 - 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Internal DTD