<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body><section><h1>仕様書</h1><ul><li><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="1" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[1]</anchor-end> <cite>RDF Site Summary 1.0 Modules: Dublin Core</cite> (<time>2002-07-03 05:19:41 +09:00</time> 版) <anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://web.resource.org/rss/1.0/modules/dc/">http://web.resource.org/rss/1.0/modules/dc/</anchor-external></li></ul></section><section><h1>意味</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="6" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[6]</anchor-end> 意味は <cite xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Dublin Core Metadata Element Set</anchor></cite> (1999年7月2日版) によります <src xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor-internal xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="1" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">&gt;&gt;1</anchor-internal></src>。</p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="8" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[8]</anchor-end> この<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>は <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Web 2.0</anchor> 的サービスにありがちな「<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">タグ</anchor>」
の記述によく用いられます。</p></section><section><h1>構文</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="2" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[2]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">名前空間URL</anchor> は <code class="URI" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">http://purl.org/dc/elements/1.1/</anchor></code> <src xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor-internal xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="1" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">&gt;&gt;1</anchor-internal></src> (一般的な<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">名前空間接頭辞</anchor>は
<code class="XML" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">dc</anchor></code>) です。</p></section><section><h1>文脈</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="4" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[4]</anchor-end> この<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>は <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">RSS 1.0</anchor> の <code class="XMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">channel</anchor></code>, <code class="XMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">item</anchor></code>,
<code class="XMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">image</anchor></code>, <code class="XMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">item</anchor></code> 各<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>で使えます。 <src xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor-internal xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="1" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">&gt;&gt;1</anchor-internal></src></p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="5" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[5]</anchor-end> この<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>は必須ではありません。個数の上限があるのかは不明です。</p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="10" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[10]</anchor-end> <pre class="XML code">    <anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject">dc:subject</anchor-external>お知らせ&lt;/dc:subject&gt;  </pre>... のように <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Atom 1.0</anchor> <code class="XMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">atom:entry</anchor></code> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>に含まれることがあります。
<code class="XMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">atom:category</anchor></code> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>を使わない意図があるのかは不明。 <time>2014-12-08T01:52:00.600Z</time></p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="16" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[16]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Atom 0.3</anchor> <code class="XMLe" xml:lang="en">atom:entry</code> で使われていることもあります。</p></section><section><h1>内容</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="3" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[3]</anchor-end> この<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>の<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">内容</anchor>は <code class="XML" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">PCDATA</anchor></code> です <src xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor-internal xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="1" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">&gt;&gt;1</anchor-internal></src>。</p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="7" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[7]</anchor-end> 将来的には <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">RDF</anchor> 的な構造を記述できるように検討されていました <src xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor-internal xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="1" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">&gt;&gt;1</anchor-internal></src>。</p></section><section><h1>関連</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="9" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[9]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">タグ</anchor>の記述に用いられることがあるという意味では、 <code class="XMLe" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">atom:category</anchor></code>
<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">要素</anchor>と似ています。</p><figure class="quote"><figcaption><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="11" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[11]</anchor-end> (<time>2016-03-18 23:40:39 +09:00</time> 版)
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://burusoku-vip.com/atom.xml">http://burusoku-vip.com/atom.xml</anchor-external></figcaption><blockquote><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject">dc:subject</anchor-external>VIP&lt;/dc:subject&gt;</p><comment-p xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Atom 0.3</anchor></comment-p></blockquote></figure><figure class="quote"><figcaption><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="12" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[12]</anchor-end> (<time>2016-03-19 00:36:55 +09:00</time> 版)
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://blog.excite.co.jp/editorcafe/index.xml">http://blog.excite.co.jp/editorcafe/index.xml</anchor-external></figcaption><blockquote><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject">dc:subject</anchor-external>■耳より情報・キャンペーン&lt;/dc:subject&gt;</p><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:creator">dc:creator</anchor-external>blog_editor2&lt;/dc:creator&gt;</p></blockquote></figure><figure class="quote"><figcaption><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="13" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[13]</anchor-end> <cite>はてなブックマークAtomAPI - Hatena Developer Center</cite>
(<time>2016-03-21 10:42:10 +09:00</time> 版)
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://developer.hatena.ne.jp/ja/documents/bookmark/apis/atom">http://developer.hatena.ne.jp/ja/documents/bookmark/apis/atom</anchor-external></figcaption><blockquote><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject xmlns:dc=&quot;http://purl.org/dc/elements/1.1/&quot;">dc:subject xmlns:dc=&quot;http://purl.org/dc/elements/1.1/&quot;</anchor-external>はてな&lt;/dc:subject&gt;</p><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject xmlns:dc=&quot;http://purl.org/dc/elements/1.1/&quot;">dc:subject xmlns:dc=&quot;http://purl.org/dc/elements/1.1/&quot;</anchor-external>インタビュー&lt;/dc:subject&gt;</p><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject xmlns:dc=&quot;http://purl.org/dc/elements/1.1/&quot;">dc:subject xmlns:dc=&quot;http://purl.org/dc/elements/1.1/&quot;</anchor-external>はてなブックマーク&lt;/dc:subject&gt;</p><p>&lt;/entry&gt;</p><comment-p xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Atom 0.3</anchor></comment-p></blockquote></figure><figure class="quote"><figcaption><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="14" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[14]</anchor-end> <cite>はてなブックマークフィード仕様 - Hatena Developer Center</cite>
(<time>2016-03-21 10:54:11 +09:00</time> 版)
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://developer.hatena.ne.jp/ja/documents/bookmark/misc/feed">http://developer.hatena.ne.jp/ja/documents/bookmark/misc/feed</anchor-external></figcaption><blockquote><p>RSS/Atomフィードにタグをあらわす要素が追加されました。各エントリー毎に dc:subject 要素として表現されます。(拡張以前は dc:subject はエントリーのカテゴリーを表していましたが、拡張後はタグを表すよう変更となりました。)</p><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject">dc:subject</anchor-external>hatena&lt;/dc:subject&gt;</p><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject">dc:subject</anchor-external>blog&lt;/dc:subject&gt;</p><p>タグが複数ある場合は、dc:subject要素は複数定義されます。</p><p>タグが存在しない場合は dc:subject要素は省略されます。</p><p>RSSフィードでは dc:subject に加えて taxo:topis 要素にてリソース表現を行っています。</p></blockquote></figure><figure class="quote"><figcaption><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="15" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[15]</anchor-end> (<time>2016-03-27 20:51:13 +09:00</time> 版)
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://iss.ndl.go.jp/api/opensearch?title=%e3%83%9e%e3%83%aa%e3%83%bc%e3%82%a2%e3%83%b3%e3%83%88%e3%83%af%e3%83%8d%e3%83%83%e3%83%88&amp;ndc=2">http://iss.ndl.go.jp/api/opensearch?title=%e3%83%9e%e3%83%aa%e3%83%bc%e3%82%a2%e3%83%b3%e3%83%88%e3%83%af%e3%83%8d%e3%83%83%e3%83%88&amp;ndc=2</anchor-external></figcaption><blockquote><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject xsi:type=&quot;dcndl:NDC9&quot;">dc:subject xsi:type=&quot;dcndl:NDC9&quot;</anchor-external>708.7&lt;/dc:subject&gt;</p><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject xsi:type=&quot;dcndl:NDC9&quot;">dc:subject xsi:type=&quot;dcndl:NDC9&quot;</anchor-external>288.4934&lt;/dc:subject&gt;</p><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject xsi:type=&quot;dcndl:NDC9&quot;">dc:subject xsi:type=&quot;dcndl:NDC9&quot;</anchor-external>288.4935&lt;/dc:subject&gt;</p><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject xsi:type=&quot;dcndl:NDC8&quot;">dc:subject xsi:type=&quot;dcndl:NDC8&quot;</anchor-external>708.7&lt;/dc:subject&gt;</p><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject xsi:type=&quot;dcndl:NDC8&quot;">dc:subject xsi:type=&quot;dcndl:NDC8&quot;</anchor-external>288.4934&lt;/dc:subject&gt;</p><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject xsi:type=&quot;dcndl:NDC8&quot;">dc:subject xsi:type=&quot;dcndl:NDC8&quot;</anchor-external>288.4935&lt;/dc:subject&gt;</p></blockquote></figure><figure class="quote"><figcaption><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="17" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[17]</anchor-end> (<time>2018-04-25 01:00:06 +09:00</time>)
<anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="https://nettv.gov-online.go.jp/rss/rss.xml">https://nettv.gov-online.go.jp/rss/rss.xml</anchor-external></figcaption><blockquote><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:subject /">dc:subject /</anchor-external> </p><p><anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="dc:creator /">dc:creator /</anchor-external> </p></blockquote></figure></section></body></html>