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id=\"2-%e8%a8%ad%e8%a8%88%e6%95%b8%e6%93%9a%e6%a8%a1%e5%9e%8b-aGvchpcQlj\">2. 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id=\"%e7%a4%ba%e4%be%8b%ef%bc%9aer%e5%9c%96-aGvchpcQlj\">\u793a\u4f8b\uff1aER\u5716<\/h3>\n<pre>\n+----------------+       +----------------+\n|    \u7528\u6236        |       |    \u8a02\u55ae        |\n+----------------+       +----------------+\n| \u7528\u6236ID (PK)    || \u8a02\u55aeID (PK)    |\n| \u59d3\u540d           |       | \u7528\u6236ID (FK)    |\n| \u96fb\u5b50\u90f5\u4ef6       |       | \u8a02\u55ae\u65e5\u671f       |\n+----------------+       +----------------+\n<\/pre>\n<h2 id=\"3-%e6%ad%a3%e8%a6%8f%e5%8c%96%e6%95%b8%e6%93%9a-aGvchpcQlj\">3. \u6b63\u898f\u5316\u6578\u64da<\/h2>\n<p>\u6b63\u898f\u5316\u662f\u8a2d\u8a08\u6578\u64da\u5eab\u7d50\u69cb\u7684\u91cd\u8981\u6b65\u9a5f\uff0c\u65e8\u5728\u6d88\u9664\u6578\u64da\u5197\u9918\u4e26\u63d0\u9ad8\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u6b63\u898f\u5316\u901a\u5e38\u5206\u70ba\u5e7e\u500b\u968e\u6bb5\uff0c\u7a31\u70ba\u6b63\u898f\u5f62\u5f0f\uff08Normal Forms\uff09\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6b63\u898f\u5f62\u5f0f\uff1a<\/p>\n<ul>\n<li><strong>\u7b2c\u4e00\u6b63\u898f\u5f62\u5f0f\uff081NF\uff09\uff1a<\/strong>\u78ba\u4fdd\u6bcf\u500b\u5b57\u6bb5\u90fd\u662f\u539f\u5b50\u6027\u7684\uff0c\u5373\u6bcf\u500b\u5b57\u6bb5\u53ea\u80fd\u5305\u542b\u4e00\u500b\u503c\u3002<\/li>\n<li><strong>\u7b2c\u4e8c\u6b63\u898f\u5f62\u5f0f\uff082NF\uff09\uff1a<\/strong>\u6d88\u9664\u90e8\u5206\u4f9d\u8cf4\uff0c\u5373\u6bcf\u500b\u975e\u4e3b\u9375\u5b57\u6bb5\u5fc5\u9808\u5b8c\u5168\u4f9d\u8cf4\u65bc\u4e3b\u9375\u3002<\/li>\n<li><strong>\u7b2c\u4e09\u6b63\u898f\u5f62\u5f0f\uff083NF\uff09\uff1a<\/strong>\u6d88\u9664\u50b3\u905e\u4f9d\u8cf4\uff0c\u5373\u975e\u4e3b\u9375\u5b57\u6bb5\u4e0d\u61c9\u4f9d\u8cf4\u65bc\u5176\u4ed6\u975e\u4e3b\u9375\u5b57\u6bb5\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e8%80%83%e6%85%ae%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96-aGvchpcQlj\">4. 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