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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Channel Definition Format</span></h1>
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<div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="de" dir="ltr"><div class="mw-content-ltr mw-parser-output" lang="de" dir="ltr"><p>Das <b>Channel Definition Format</b> (CDF) ist ein <a href="Extensible_Markup_Language" title="Extensible Markup Language">XML</a>-Standard, der im Zusammenhang mit den von <a href="Microsoft" title="Microsoft">Microsoft</a> entworfenen Technologien Active Channel und Offline<a href="Lesezeichen_(Internet)" class="mw-redirect" title="Lesezeichen (Internet)">favoriten</a> (engl. <i>Offline Favorites</i>) verwendet wird. Er dient der Strukturierung des Inhaltes von <a href="Website" title="Website">Websites</a>. Der Standard ist in gewisser Weise dem <a href="RSS_(Web-Feed)" title="RSS (Web-Feed)">RSS</a>-Standard ähnlich, der von <a href="Netscape_Communications" title="Netscape Communications">Netscape</a> einige Jahre nach dem Erscheinen von CDF (im Jahre 1997) entwickelt wurde. Der Standard und die Active Channels wurden mit dem Erscheinen des <a href="Internet_Explorer" title="Internet Explorer">Internet Explorers</a> 4.0 eingeführt. Offlinefavoriten wurden mit Version 5.0 eingeführt. Mit dem Erscheinen des Internet Explorers 7 wurde der Standard zugunsten von RSS wieder fallen gelassen.
</p><p>Active Channels ermöglichen dem Benutzer, Websites auf seinem <a href="Desktop_(grafische_Benutzeroberfl%C3%A4che)" title="Desktop (grafische Benutzeroberfläche)">Desktop</a> aufzulisten und zu synchronisieren. Offlinefavoriten erlauben ebenso wie Channels, die Webseiten aus dem Cache abzurufen.
</p><p>Im Gegensatz zu RSS wurde die Idee der Active Channels jedoch nicht in großem Maße akzeptiert, und sie werden nur vereinzelt eingesetzt.
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<div class="mw-heading mw-heading2"><h2 id="Beispiel">Beispiel</h2></div>
<p>Eine gewöhnliche CDF-Datei:
</p>
<div class="mw-highlight mw-highlight-lang-xml mw-content-ltr" dir="ltr"><pre><span></span><span class="cp"><?xml version="1.0" encoding="UTF-8"?></span>
<span class="nt"><CHANNEL</span><span class="w"> </span><span class="na">HREF=</span><span class="s">"http://domain/folder/pageOne.extension"</span>
<span class="w"> </span><span class="na">BASE=</span><span class="s">"http://domain/folder/"</span>
<span class="w"> </span><span class="na">LASTMOD=</span><span class="s">"1998-11-05T22:12"</span>
<span class="w"> </span><span class="na">PRECACHE=</span><span class="s">"YES"</span>
<span class="w"> </span><span class="na">LEVEL=</span><span class="s">"0"</span><span class="nt">></span>
<span class="w"> </span><span class="nt"><TITLE></span>Title<span class="w"> </span>of<span class="w"> </span>your<span class="w"> </span>Channel<span class="nt"></TITLE></span>
<span class="w"> </span><span class="nt"><ABSTRACT></span>Synopsis<span class="w"> </span>of<span class="w"> </span>your<span class="w"> </span>channel's<span class="w"> </span>contents.<span class="nt"></ABSTRACT></span>
<span class="w"> </span><span class="nt"><SCHEDULE></span>
<span class="w"> </span><span class="nt"><INTERVALTIME</span><span class="w"> </span><span class="na">DAY=</span><span class="s">"14"</span><span class="nt">/></span>
<span class="w"> </span><span class="nt"></SCHEDULE></span>
<span class="w"> </span><span class="nt"><LOGO</span><span class="w"> </span><span class="na">HREF=</span><span class="s">"wideChannelLogo.gif"</span><span class="w"> </span><span class="na">STYLE=</span><span class="s">"IMAGE-WIDE"</span><span class="nt">/></span>
<span class="w"> </span><span class="nt"><LOGO</span><span class="w"> </span><span class="na">HREF=</span><span class="s">"imageChannelLogo.gif"</span><span class="w"> </span><span class="na">STYLE=</span><span class="s">"IMAGE"</span><span class="nt">/></span>
<span class="w"> </span><span class="nt"><LOGO</span><span class="w"> </span><span class="na">HREF=</span><span class="s">"iconChannelLogo.gif"</span><span class="w"> </span><span class="na">STYLE=</span><span class="s">"ICON"</span><span class="nt">/></span>
<span class="w"> </span><span class="nt"><ITEM</span><span class="w"> </span><span class="na">HREF=</span><span class="s">"pageTwo.extension"</span>
<span class="w"> </span><span class="na">LASTMOD=</span><span class="s">"1998-11-05T22:12"</span>
<span class="w"> </span><span class="na">PRECACHE=</span><span class="s">"YES"</span>
<span class="w"> </span><span class="na">LEVEL=</span><span class="s">"1"</span><span class="nt">></span>
<span class="w"> </span><span class="nt"><TITLE></span>Page<span class="w"> </span>Two's<span class="w"> </span>Title<span class="nt"></TITLE></span>
<span class="w"> </span><span class="nt"><ABSTRACT></span>Synopsis<span class="w"> </span>of<span class="w"> </span>Page<span class="w"> </span>Two's<span class="w"> </span>contents.<span class="nt"></ABSTRACT></span>
<span class="w"> </span><span class="nt"><LOGO</span><span class="w"> </span><span class="na">HREF=</span><span class="s">"pageTwoLogo.gif"</span><span class="w"> </span><span class="na">STYLE=</span><span class="s">"IMAGE"</span><span class="nt">/></span>
<span class="w"> </span><span class="nt"><LOGO</span><span class="w"> </span><span class="na">HREF=</span><span class="s">"pageTwoLogo.gif"</span><span class="w"> </span><span class="na">STYLE=</span><span class="s">"ICON"</span><span class="nt">/></span>
<span class="w"> </span><span class="nt"></ITEM></span>
<span class="nt"></CHANNEL></span>
</pre></div>
<div class="mw-heading mw-heading2"><h2 id="Siehe_auch">Siehe auch</h2></div>
<ul><li><a href="Semantic_Web" title="Semantic Web">Semantic Web</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="Weblinks">Weblinks</h2></div>
<ul><li><a rel="nofollow" class="external text" href="http://msdn.microsoft.com/de-de/library/aa768023(VS.85).aspx">Einführung in die Active-Channel-Technologie</a> im <a href="Microsoft_Developer_Network" title="Microsoft Developer Network">MSDN</a> (englisch)</li>
<li><a rel="nofollow" class="external text" href="http://msdn.microsoft.com/de-de/library/aa768024(VS.85).aspx">How to Create Channel Definition Format (CDF) Files</a> im <a href="Microsoft_Developer_Network" title="Microsoft Developer Network">MSDN</a> (englisch)</li>
<li><a rel="nofollow" class="external text" href="http://msdn.microsoft.com/de-de/library/aa768020(VS.85).aspx">Active Channel Technology Tutorials</a> im <a href="Microsoft_Developer_Network" title="Microsoft Developer Network">MSDN</a> (englisch)</li>
<li><a rel="nofollow" class="external text" href="http://www.w3.org/TR/NOTE-CDFsubmit.html">Channel Definition Format</a> 1997 W3 Submission (englisch)</li></ul></div><!--htdig_noindex--><div><div class="zim-footer">
Dieser Artikel wurde von <a class="external text" title="Zuletzt bearbeitet am 2016-01-14" href="https://de.wikipedia.org/wiki/?title=Channel_Definition_Format&oldid=150224924">Wikipedia</a> herausgegeben. Der Text ist unter <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.de">Creative Commons Attribution-Share Alike 4.0</a> verfügbar, sofern nicht anders angegeben. Für die Mediendateien können zusätzliche Bedingungen gelten.
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