锘??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#119;&#119;&#119;&#46;&#25104;&#20154;&#32593;&#44;&#57;&#57;&#57;&#22269;&#20135;&#31934;&#21697;&#27704;&#20037;&#20813;&#36153;&#35270;&#39057;&#97;&#112;&#112;&#44;&#49;&#55;&#54;&#57;&#22269;&#20135;&#31934;&#21697;</title><link>http://www.aygfsteel.com/xwood/category/47265.html</link><description>JUST ABC OR銆�DEF</description><language>zh-cn</language><lastBuildDate>Sun, 24 Jun 2012 05:04:41 GMT</lastBuildDate><pubDate>Sun, 24 Jun 2012 05:04:41 GMT</pubDate><ttl>60</ttl><item><title>E鈥擱鏁版嵁妯″瀷</title><link>http://www.aygfsteel.com/xwood/articles/339742.html</link><dc:creator>xwood</dc:creator><author>xwood</author><pubDate>Fri, 04 May 2012 01:47:00 GMT</pubDate><guid>http://www.aygfsteel.com/xwood/articles/339742.html</guid><wfw:comment>http://www.aygfsteel.com/xwood/comments/339742.html</wfw:comment><comments>http://www.aygfsteel.com/xwood/articles/339742.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/xwood/comments/commentRss/339742.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/xwood/services/trackbacks/339742.html</trackback:ping><description><![CDATA[<p>涓�銆丒&#8212;妯″瀷綆�浠嬶細(xì)</p>
<p><span id="wmqeeuq"    class="Apple-tab-span" style="white-space:pre"> </span>E&#8212;R妯″瀷(Entity-Relationship Model)錛屽張鍙疄浣?#8212;鍏崇郴妯″瀷錛屾垨E/R妯″瀷銆傛槸寤虹珛鏁版嵁搴撹繃紼嬩腑鏈�姒傚康鍖栵紝鏈�鎺ヨ繎瀹炰綋鐨勬ā鍨嬨�傚湪E&#8212;R妯″瀷涓紝鏁版嵁緇撴瀯琚〃紺轟負(fù)&#8220;瀹炰綋&#8212;鑱旂郴&#8221;鍥撅紝鍥句腑鏈変笁涓富瑕佺殑鍏冪礌綾誨瀷錛?/p>
<p><span id="wmqeeuq"    class="Apple-tab-span" style="white-space:pre"> </span>1.瀹炰綋闆嗭紙Entity)錛氫粠緙栫▼鐨勮搴︽潵璁詫紝涓庡璞＄浉浼箋�傚湪E&#8212;R鍥句腑鐢ㄧ煩褰㈡琛ㄧず銆?/p>
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<p><span id="wmqeeuq"    class="Apple-tab-span" style="white-space:pre"> </span>3.鍏崇郴(Relationship)錛氫袱涓垨澶氫釜瀹炰綋闂寸殑鐢峰榪炴帴錛屽彲浠ヤ竴瀵逛竴銆佷竴瀵瑰銆佸瀵逛竴銆佸瀵瑰絳夊縐嶅叧緋匯�傚湪E&#8212;R鍥句腑鐢ㄦ１褰㈣〃紺恒�?/p>
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