{"id":1413,"date":"2026-03-27T06:08:58","date_gmt":"2026-03-27T06:08:58","guid":{"rendered":"https:\/\/www.method-post.com\/tw\/uml-class-diagram-mistakes-fixes\/"},"modified":"2026-03-27T06:08:58","modified_gmt":"2026-03-27T06:08:58","slug":"uml-class-diagram-mistakes-fixes","status":"publish","type":"post","link":"https:\/\/www.method-post.com\/tw\/uml-class-diagram-mistakes-fixes\/","title":{"rendered":"10 \u500b\u5e38\u898b\u7684 UML \u985e\u5716\u932f\u8aa4\uff0c\u6703\u5c0e\u81f4\u60a8\u7684\u8edf\u9ad4\u8a2d\u8a08\u5d29\u6f70\uff0c\u4ee5\u53ca\u5982\u4f55\u5feb\u901f\u4fee\u6b63"},"content":{"rendered":"<p>\u5efa\u7acb\u7a69\u5065\u7684\u8edf\u9ad4\u9700\u8981\u4e00\u4efd\u85cd\u5716\u3002\u82e5\u7121\u660e\u78ba\u7684\u67b6\u69cb\u898f\u5283\uff0c\u958b\u767c\u5718\u968a\u5f80\u5f80\u6703\u9677\u5165\u6280\u8853\u50b5\uff0c\u6700\u7d42\u96e3\u4ee5\u7ba1\u7406\u3002\u7d71\u4e00\u5851\u6a21\u8a9e\u8a00\uff08UML\uff09\u985e\u5716\u662f\u7528\u4f86\u8996\u89ba\u5316\u6b64\u7d50\u69cb\u7684\u6a19\u6e96\u5de5\u5177\u3002\u7136\u800c\uff0c\u7e6a\u88fd\u5716\u8868\u4e0d\u50c5\u50c5\u662f\u756b\u65b9\u6846\u8207\u7dda\u689d\uff1b\u66f4\u95dc\u9375\u7684\u662f\u6e96\u78ba\u50b3\u9054\u610f\u5716\u3001\u7d04\u675f\u8207\u884c\u70ba\u3002<\/p>\n<p>\u7576\u985e\u5716\u4e2d\u5b58\u5728\u932f\u8aa4\u6642\uff0c\u9019\u4e9b\u932f\u8aa4\u6703\u50b3\u64ad\u81f3\u7a0b\u5f0f\u78bc\u5eab\u3002\u958b\u767c\u4eba\u54e1\u8aa4\u89e3\u9700\u6c42\uff0c\u67b6\u69cb\u5e2b\u5ffd\u7565\u8026\u5408\u554f\u984c\uff0c\u6700\u7d42\u7522\u51fa\u7684\u7522\u54c1\u8b8a\u5f97\u8106\u5f31\u3002\u672c\u6307\u5357\u8b58\u5225\u4e86 UML \u985e\u5716\u8a2d\u8a08\u4e2d\u7684\u5341\u500b\u5e38\u898b\u9677\u9631\uff0c\u4e26\u63d0\u4f9b\u53ef\u57f7\u884c\u7684\u4fee\u6b63\u65b9\u6cd5\uff0c\u4ee5\u7a69\u5b9a\u60a8\u7684\u8a2d\u8a08\u6d41\u7a0b\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Charcoal contour sketch infographic illustrating 10 common UML class diagram mistakes and their fixes for software architecture: overloading implementation details, missing visibility modifiers (+\/-\/#), incorrect cardinality notation, circular dependencies, mixed abstraction levels, poor naming conventions, absent interface contracts, undefined multiplicity constraints, inheritance misuse vs composition, and confused state\/behavior separation. Features side-by-side bad practice vs corrected practice visual comparisons with UML notation symbols, association lines, and design principle guidance for developers and architects.\" decoding=\"async\" src=\"https:\/\/www.method-post.com\/wp-content\/uploads\/2026\/03\/uml-class-diagram-mistakes-fixes-infographic-charcoal-sketch.jpg\"\/><\/figure>\n<\/div>\n<h2>1. \u5716\u8868\u4e2d\u904e\u5ea6\u5305\u542b\u5be6\u4f5c\u7d30\u7bc0 \ud83d\udce6<\/h2>\n<p>\u6700\u5e38\u898b\u7684\u932f\u8aa4\u4e4b\u4e00\uff0c\u662f\u5c07\u985e\u5716\u8996\u70ba\u6bcf\u500b\u8b8a\u6578\u8207\u65b9\u6cd5\u7684\u898f\u683c\u3002\u96d6\u7136\u5c07\u6240\u6709\u5c6c\u6027\u90fd\u7d0d\u5165\u4ee5\u986f\u793a\u5b8c\u6574\u6027\u770b\u4f3c\u8a98\u4eba\uff0c\u4f46\u9019\u6a23\u505a\u53cd\u800c\u6703\u63a9\u84cb\u9ad8\u968e\u7d50\u69cb\u3002<\/p>\n<ul>\n<li><strong>\u554f\u984c\uff1a<\/strong>\u5305\u542b\u79c1\u6709\u65b9\u6cd5\u3001\u66ab\u6642\u8b8a\u6578\u8207\u7279\u5b9a\u8cc7\u6599\u985e\u578b\uff0c\u6703\u4f7f\u8996\u89ba\u6d41\u7a0b\u6df7\u4e82\u3002\u5229\u76ca\u76f8\u95dc\u8005\u8207\u67b6\u69cb\u5e2b\u5c07\u7121\u6cd5\u5c08\u6ce8\u65bc\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u4fc2\u3002<\/li>\n<li><strong>\u5f71\u97ff\uff1a<\/strong>\u5be9\u67e5\u9031\u671f\u5ef6\u9577\u3002\u65b0\u958b\u767c\u4eba\u54e1\u7121\u6cd5\u770b\u898b\u6838\u5fc3\u67b6\u69cb\u3002\u5be6\u4f5c\u7d30\u7bc0\u7684\u8b8a\u66f4\u9700\u8981\u66f4\u65b0\u5716\u8868\uff0c\u4f46\u9019\u4e9b\u66f4\u65b0\u4e26\u672a\u53cd\u6620\u7d50\u69cb\u4e0a\u7684\u8b8a\u5316\u3002<\/li>\n<li><strong>\u89e3\u6c7a\u65b9\u6848\uff1a<\/strong>\u63a1\u7528\u591a\u5c64\u6b21\u65b9\u6cd5\u3002\u4f7f\u7528\u985e\u5716\u4f86\u5b9a\u7fa9\u9818\u57df\u6a21\u578b\uff08\u516c\u958b\u4ecb\u9762\u8207\u6838\u5fc3\u95dc\u4fc2\uff09\u3002\u5c07\u5be6\u4f5c\u7d30\u7bc0\u79fb\u81f3\u5e8f\u5217\u5716\u6216\u8a73\u7d30\u6587\u4ef6\u4e2d\u3002<\/li>\n<\/ul>\n<h2>2. \u5ffd\u7565\u53ef\u898b\u6027\u4fee\u98fe\u7b26 \ud83d\udeab<\/h2>\n<p>\u53ef\u898b\u6027\u5b9a\u7fa9\u4e86\u985e\u6210\u54e1\u7684\u53ef\u5b58\u53d6\u7a0b\u5ea6\u3002\u5ffd\u7565\u53ef\u898b\u6027\u4fee\u98fe\u7b26\uff0c\u6216\u5c07\u6240\u6709\u9805\u76ee\u9810\u8a2d\u70ba\u516c\u958b\uff0c\u662f\u7269\u4ef6\u5c0e\u5411\u8a2d\u8a08\u4e2d\u7684\u91cd\u5927\u758f\u5ffd\u3002<\/p>\n<ul>\n<li><strong>\u554f\u984c\uff1a<\/strong>\u82e5\u6240\u6709\u5c6c\u6027\u7686\u70ba\u516c\u958b\uff0c\u4efb\u4f55\u985e\u5225\u7686\u53ef\u4fee\u6539\u53e6\u4e00\u500b\u985e\u5225\u7684\u5167\u90e8\u72c0\u614b\u3002\u9019\u9055\u53cd\u4e86\u5c01\u88dd\u539f\u5247\uff0c\u5c0e\u81f4\u884c\u70ba\u4e0d\u53ef\u9810\u6e2c\u3002<\/li>\n<li><strong>\u5f71\u97ff\uff1a<\/strong>\u7522\u751f\u7dca\u5bc6\u8026\u5408\u3002\u91cd\u69cb\u985e\u5225\u8b8a\u5f97\u5371\u96aa\uff0c\u56e0\u70ba\u4f60\u7121\u6cd5\u77e5\u9053\u8ab0\u6b63\u5728\u76f4\u63a5\u5b58\u53d6\u5176\u8cc7\u6599\u3002<\/li>\n<li><strong>\u89e3\u6c7a\u65b9\u6848\uff1a<\/strong>\u660e\u78ba\u6a19\u793a\u5c6c\u6027\u8207\u65b9\u6cd5\u3002\u4f7f\u7528 <code>+<\/code> \u8868\u793a\u516c\u958b\uff0c<code>-<\/code> \u8868\u793a\u79c1\u6709\uff0c\u4ee5\u53ca <code>#<\/code> \u8868\u793a\u4fdd\u8b77\u3002\u78ba\u4fdd\u72c0\u614b\u7684\u4fee\u6539\u662f\u900f\u904e\u516c\u958b\u65b9\u6cd5\u9032\u884c\uff0c\u800c\u975e\u76f4\u63a5\u5b58\u53d6\u3002<\/li>\n<\/ul>\n<h2>3. \u932f\u8aa4\u7684\u95dc\u4fc2\u57fa\u6578 \ud83d\udccf<\/h2>\n<p>\u95dc\u4fc2\u5b9a\u7fa9\u4e86\u7269\u4ef6\u4e4b\u9593\u5982\u4f55\u4e92\u52d5\u3002\u932f\u8aa4\u5730\u8868\u793a\u57fa\u6578\uff08\u4e00\u500b\u985e\u5225\u7684\u5be6\u4f8b\u8207\u53e6\u4e00\u500b\u985e\u5225\u7684\u5be6\u4f8b\u4e4b\u9593\u7684\u6578\u91cf\u95dc\u4fc2\uff09\u6703\u9020\u6210\u908f\u8f2f\u4e0a\u7684\u7f3a\u53e3\u3002<\/p>\n<ul>\n<li><strong>\u554f\u984c\uff1a<\/strong>\u7576\u908f\u8f2f\u61c9\u70ba\u4e00\u5c0d\u591a\u95dc\u4fc2\u6642\uff0c\u537b\u756b\u6210\u4e00\u5c0d\u4e00\u3002\u6216\u672a\u660e\u78ba\u6307\u5b9a\u6700\u5c0f\u8207\u6700\u5927\u6578\u91cf\uff08\u4f8b\u5982 0..1 \u8207 1..*\uff09\u3002<\/li>\n<li><strong>\u5f71\u97ff\uff1a<\/strong> \u5f9e\u5716\u793a\u884d\u751f\u7684\u8cc7\u6599\u5eab\u7d50\u69cb\u6a21\u5f0f\u5c07\u7121\u6cd5\u901a\u904e\u9a57\u8b49\u7d04\u675f\u3002\u61c9\u7528\u7a0b\u5f0f\u908f\u8f2f\u5728\u8655\u7406\u96c6\u5408\u6642\u6703\u62cb\u51fa\u57f7\u884c\u6642\u671f\u932f\u8aa4\u3002<\/li>\n<li><strong>\u89e3\u6c7a\u65b9\u6cd5\uff1a<\/strong> \u5206\u6790\u696d\u52d9\u898f\u5247\u3002\u6bcf\u500b\u4f7f\u7528\u8005\u662f\u5426\u90fd\u64c1\u6709\u96fb\u5b50\u90f5\u4ef6\uff1f\uff081..1\uff09\u3002\u6bcf\u500b\u4f7f\u7528\u8005\u662f\u5426\u90fd\u64c1\u6709\u8a02\u55ae\uff1f\uff081..*\uff09\u3002\u5728\u95dc\u806f\u7dda\u689d\u4e0a\u660e\u78ba\u8a18\u9304\u9019\u4e9b\u7d04\u675f\u3002<em>\u64c1\u6709<\/em> \u4e00\u500b\u96fb\u5b50\u90f5\u4ef6\uff1f\uff081..1\uff09\u3002\u6bcf\u500b\u4f7f\u7528\u8005\u662f\u5426\u90fd\u64c1\u6709<em>\u64c1\u6709<\/em> \u4e00\u500b\u8a02\u55ae\uff1f\uff081..*\uff09\u3002\u5728\u95dc\u806f\u7dda\u689d\u4e0a\u660e\u78ba\u8a18\u9304\u9019\u4e9b\u7d04\u675f\u3002<\/li>\n<\/ul>\n<h2>4. \u5275\u5efa\u5faa\u74b0\u4f9d\u8cf4 \ud83d\udd01<\/h2>\n<p>\u7576\u985e\u5225 A \u4f9d\u8cf4\u985e\u5225 B\uff0c\u800c\u985e\u5225 B \u53c8\u4f9d\u8cf4\u985e\u5225 A \u6642\uff0c\u5c31\u6703\u7522\u751f\u5faa\u74b0\u4f9d\u8cf4\u3002\u96d6\u7136\u67d0\u4e9b\u60c5\u5883\u7121\u6cd5\u907f\u514d\uff0c\u4f46\u9019\u901a\u5e38\u4ee3\u8868\u95dc\u6ce8\u9ede\u5206\u96e2\u4e0d\u4f73\u3002<\/p>\n<ul>\n<li><strong>\u554f\u984c\uff1a<\/strong> A \u5230 B \u548c B \u5230 A \u7684\u76f4\u63a5\u9023\u7d50\u6703\u5f62\u6210\u4e00\u500b\u5faa\u74b0\u3002\u9019\u901a\u5e38\u6703\u5c0e\u81f4\u521d\u59cb\u5316\u554f\u984c\uff0c\u4e26\u4f7f\u55ae\u5143\u6e2c\u8a66\u8b8a\u5f97\u56f0\u96e3\u3002<\/li>\n<li><strong>\u5f71\u97ff\uff1a<\/strong> \u7cfb\u7d71\u53ef\u80fd\u5728\u555f\u52d5\u671f\u9593\u7576\u6a5f\u3002\u4fee\u6539\u5176\u4e2d\u4e00\u500b\u985e\u5225\uff0c\u9700\u8981\u91cd\u65b0\u7de8\u8b6f\u4e26\u91cd\u65b0\u90e8\u7f72\u53e6\u4e00\u500b\u985e\u5225\uff0c\u5f9e\u800c\u964d\u4f4e\u958b\u767c\u901f\u5ea6\u3002<\/li>\n<li><strong>\u89e3\u6c7a\u65b9\u6cd5\uff1a<\/strong> \u5f15\u5165\u4e00\u500b\u4e2d\u4ecb\u4ecb\u9762\u6216\u5171\u7528\u7684\u62bd\u8c61\u985e\u5225\u3002\u900f\u904e\u8b93\u5169\u500b\u985e\u5225\u90fd\u4f9d\u8cf4\u4e00\u500b\u5171\u540c\u7684\u4f9d\u8cf4\u9805\u76ee\uff0c\u4f86\u6253\u7834\u76f4\u63a5\u9023\u7d50\uff0c\u6216\u4f7f\u7528\u4f9d\u8cf4\u6ce8\u5165\u5728\u57f7\u884c\u6642\u671f\u800c\u975e\u8a2d\u8a08\u6642\u671f\u89e3\u6c7a\u95dc\u4fc2\u3002<\/li>\n<\/ul>\n<h2>5. \u6df7\u5408\u62bd\u8c61\u5c64\u7d1a \ud83e\udde9<\/h2>\n<p>\u5716\u793a\u61c9\u7dad\u6301\u4e00\u81f4\u7684\u62bd\u8c61\u5c64\u7d1a\u3002\u5c07\u9ad8\u968e\u9818\u57df\u6982\u5ff5\u8207\u4f4e\u968e\u6280\u8853\u57fa\u790e\u8a2d\u65bd\u6df7\u5408\uff0c\u6703\u8b93\u8b80\u8005\u611f\u5230\u6df7\u6dc6\u3002<\/p>\n<ul>\n<li><strong>\u554f\u984c\uff1a<\/strong> \u5728\u540c\u4e00\u5f35\u5716\u793a\u4e0a\u540c\u6642\u653e\u7f6e\u300c\u8cc7\u6599\u5eab\u9023\u63a5\u300d\u985e\u5225\u8207\u300c\u9867\u5ba2\u8a02\u55ae\u300d\u6216\u300c\u4ed8\u6b3e\u8655\u7406\u5668\u300d\u3002\u4e00\u500b\u4ee3\u8868\u696d\u52d9\u908f\u8f2f\uff0c\u53e6\u4e00\u500b\u4ee3\u8868\u57fa\u790e\u8a2d\u65bd\u3002<\/li>\n<li><strong>\u5f71\u97ff\uff1a<\/strong> \u5716\u793a\u7121\u6cd5\u767c\u63ee\u5176\u91d0\u6e05\u9818\u57df\u6a21\u578b\u7684\u76ee\u7684\u3002\u5b83\u5f15\u5165\u4e86\u5e72\u64fe\u696d\u52d9\u898f\u5247\u7684\u96dc\u8a0a\u3002<\/li>\n<li><strong>\u89e3\u6c7a\u65b9\u6cd5\uff1a<\/strong> \u5206\u96e2\u95dc\u6ce8\u9ede\u3002\u70ba\u696d\u52d9\u5be6\u9ad4\u5efa\u7acb\u9818\u57df\u6a21\u578b\u5716\u3002\u70ba\u57fa\u790e\u8a2d\u65bd\u5efa\u7acb\u7cfb\u7d71\u67b6\u69cb\u5716\u3002\u8b93\u985e\u5225\u5716\u5c08\u6ce8\u65bc\u696d\u52d9\u5be6\u9ad4\u53ca\u5176\u4e92\u52d5\u3002<\/li>\n<\/ul>\n<h2>6. \u6b20\u4f73\u7684\u547d\u540d\u6163\u4f8b \ud83c\udff7\ufe0f<\/h2>\n<p>\u547d\u540d\u662f\u6587\u4ef6\u4e2d\u6700\u95dc\u9375\u7684\u8981\u7d20\u3002\u6a21\u7cca\u7684\u540d\u7a31\u5982<code>\u7ba1\u7406\u54e1<\/code>, <code>\u8cc7\u6599<\/code>\uff0c\u6216<code>\u7269\u4ef61<\/code> \u63d0\u4f9b\u96f6\u8a9e\u7fa9\u50f9\u503c\u3002<\/p>\n<ul>\n<li><strong>\u554f\u984c\uff1a<\/strong> \u4e00\u500b\u547d\u540d\u70ba <code>Process<\/code> \u53ef\u80fd\u6697\u793a\u4e00\u500b\u52d5\u8a5e\u6216\u540d\u8a5e\u3002\u4e00\u500b\u547d\u540d\u70ba <code>Data<\/code> \u662f\u4e00\u500b\u901a\u7528\u7684\u4f54\u4f4d\u7b26\u3002\u9019\u7a2e\u6a21\u7cca\u6027\u6703\u5c0e\u81f4\u958b\u767c\u4eba\u54e1\u4e4b\u9593\u7684\u8aa4\u89e3\u3002<\/li>\n<li><strong>\u5f71\u97ff\uff1a<\/strong> \u4ee3\u78bc\u5be9\u67e5\u8b8a\u6210\u4e86\u95dc\u65bc\u547d\u540d\u7684\u8a0e\u8ad6\uff0c\u800c\u975e\u908f\u8f2f\u3002\u65b0\u6210\u54e1\u7684\u5165\u8077\u6642\u9593\u66f4\u9577\uff0c\u56e0\u70ba\u610f\u5716\u4e0d\u6e05\u6670\u3002<\/li>\n<li><strong>\u89e3\u6c7a\u65b9\u6848\uff1a<\/strong> \u4f7f\u7528\u9818\u57df\u7279\u5b9a\u7684\u8853\u8a9e\u3002\u800c\u4e0d\u662f\u4f7f\u7528 <code>Data<\/code>\uff0c\u4f7f\u7528 <code>InventoryItem<\/code>\u3002\u800c\u4e0d\u662f\u4f7f\u7528 <code>Manager<\/code>\uff0c\u4f7f\u7528 <code>OrderService<\/code>\u3002\u78ba\u4fdd\u540d\u7a31\u5177\u6709\u8db3\u5920\u7684\u63cf\u8ff0\u6027\uff0c\u4ee5\u4fbf\u5728\u4e0d\u95b1\u8b80\u65b9\u6cd5\u4e3b\u9ad4\u7684\u60c5\u6cc1\u4e0b\u4e5f\u80fd\u7406\u89e3\u3002<\/li>\n<\/ul>\n<h2>7. \u7f3a\u5c11\u4ecb\u9762\u5408\u7d04 \ud83d\udcdc<\/h2>\n<p>\u5728\u7269\u4ef6\u5c0e\u5411\u8a2d\u8a08\u4e2d\uff0c\u4ecb\u9762\u5b9a\u7fa9\u4e86\u985e\u5fc5\u9808\u5c65\u884c\u7684\u5408\u7d04\u3002\u672a\u80fd\u660e\u78ba\u8868\u793a\u9019\u4e9b\u95dc\u4fc2\uff0c\u6703\u96b1\u85cf\u8a2d\u8a08\u7684\u5f48\u6027\u3002<\/p>\n<ul>\n<li><strong>\u554f\u984c\uff1a<\/strong> \u53ea\u986f\u793a\u5177\u9ad4\u985e\u5225\u7684\u7e7c\u627f\uff0c\u800c\u5ffd\u7565\u4ecb\u9762\u3002\u9019\u6697\u793a\u4e86\u4e00\u500b\u50f5\u5316\u7684\u5c64\u6b21\u7d50\u69cb\uff0c\u800c\u5be6\u969b\u4e0a\u9700\u8981\u7684\u662f\u5f48\u6027\u3002<\/li>\n<li><strong>\u5f71\u97ff\uff1a<\/strong> \u8a2d\u8a08\u8b8a\u5f97\u96e3\u4ee5\u64f4\u5c55\u3002\u7531\u65bc\u5408\u7d04\u672a\u4ee5\u8996\u89ba\u65b9\u5f0f\u5b9a\u7fa9\uff0c\u4f60\u7121\u6cd5\u5728\u4e0d\u7834\u58de\u7d50\u69cb\u7684\u60c5\u6cc1\u4e0b\u66ff\u63db\u5be6\u73fe\u3002<\/li>\n<li><strong>\u89e3\u6c7a\u65b9\u6848\uff1a<\/strong> \u4f7f\u7528\u865b\u7dda\u642d\u914d\u4e09\u89d2\u7bad\u982d\u4f86\u8868\u793a\u4ecb\u9762\u7684\u5be6\u73fe\u3002\u660e\u78ba\u4ee5 &lt;&lt;interface&gt;&gt; \u6a19\u8a18\u5b9a\u7fa9\u4ecb\u9762\u985e\u5225\u3002\u78ba\u4fdd\u6240\u6709\u5be6\u73fe\u5728\u7cfb\u7d71\u4e0a\u4e0b\u6587\u4e2d\u90fd\u53ef\u898b\u3002<\/li>\n<\/ul>\n<h2>8. \u5ffd\u7565\u591a\u91cd\u6027\u7d04\u675f \ud83c\udfaf<\/h2>\n<p>\u591a\u91cd\u6027\u5b9a\u7fa9\u4e86\u95dc\u4fc2\u4e2d\u6d89\u53ca\u7684\u5be6\u4f8b\u6578\u91cf\u3002\u8df3\u904e\u6b64\u7d30\u7bc0\u6703\u5c0e\u81f4\u95dc\u4fc2\u672a\u660e\u78ba\u5b9a\u7fa9\u3002<\/p>\n<ul>\n<li><strong>\u554f\u984c\uff1a<\/strong> \u5728\u5169\u500b\u985e\u5225\u4e4b\u9593\u756b\u4e00\u689d\u7dda\uff0c\u537b\u672a\u660e\u78ba\u6307\u51fa\u6d89\u53ca\u591a\u5c11\u500b\u7269\u4ef6\u3002\u9019\u662f\u53ef\u9078\u7684\u55ce\uff1f\u662f\u5f37\u5236\u7684\u55ce\uff1f\u9084\u662f\u591a\u500b\uff1f<\/li>\n<li><strong>\u5f71\u97ff\uff1a<\/strong> \u8cc7\u6599\u5eab\u7684\u5916\u9375\u7d04\u675f\u5c07\u88ab\u731c\u6e2c\u3002\u61c9\u7528\u7a0b\u5f0f\u908f\u8f2f\u5c07\u7f3a\u4e4f\u91dd\u5c0d\u7a7a\u503c\u6aa2\u67e5\u6216\u96c6\u5408\u9650\u5236\u7684\u4fdd\u8b77\u689d\u4ef6\u3002<\/li>\n<li><strong>\u89e3\u6c7a\u65b9\u6848\uff1a<\/strong> \u59cb\u7d42\u4ee5\u591a\u91cd\u6027\u6a19\u8a3b\u95dc\u806f\u7dda\u3002\u4f7f\u7528\u6a19\u6e96\u7b26\u865f\uff0c\u4f8b\u5982 <code>0..1<\/code>, <code>1..*<\/code>\uff0c\u6216 <code>1<\/code>\u3002\u5982\u679c\u6578\u91cf\u662f\u52d5\u614b\u7684\uff0c\u8acb\u4f7f\u7528 <code>*<\/code> \u6216 <code>0..*<\/code>\u3002\u9019\u53ef\u4f5c\u70ba\u5be6\u4f5c\u7684\u5408\u7d04\u3002<\/li>\n<\/ul>\n<h2>9. \u70ba\u6240\u6709\u4e8b\u7269\u4f7f\u7528\u7e7c\u627f \ud83e\uddec<\/h2>\n<p>\u7e7c\u627f\u662f\u4e00\u9805\u5f37\u5927\u7684\u5de5\u5177\uff0c\u4f46\u7d93\u5e38\u88ab\u6feb\u7528\u3002\u4f7f\u7528\u7e7c\u627f\u4f86\u5171\u4eab\u7a0b\u5f0f\u78bc\uff0c\u800c\u975e\u5efa\u6a21\u985e\u578b\u5c64\u6b21\u7d50\u69cb\uff0c\u6703\u9055\u53cd\u91cc\u6c0f\u66ff\u63db\u539f\u5247\u3002<\/p>\n<ul>\n<li><strong>\u554f\u984c\uff1a<\/strong> \u5efa\u7acb\u904e\u6df1\u7684\u5c64\u6b21\u7d50\u69cb\uff0c\u5176\u4e2d\u985e\u5225\u7e7c\u627f\u4e86\u8a9e\u7fa9\u4e0a\u4e26\u672a\u64c1\u6709\u7684\u884c\u70ba\u3002\u4f8b\u5982\uff0c\u4e00\u500b <code>\u6c7d\u8eca<\/code> \u5f9e <code> \u8eca\u8f1b<\/code> \u7e7c\u627f\u662f\u6b63\u78ba\u7684\uff1b\u4f46\u4e00\u500b <code>\u6c7d\u8eca<\/code> \u5f9e <code> \u5f15\u64ce<\/code> \u7e7c\u627f\u5247\u4e0d\u6b63\u78ba\u3002<\/li>\n<li><strong>\u5f71\u97ff\uff1a<\/strong> \u57fa\u985e\u8106\u5f31\u554f\u984c\u3002\u66f4\u52d5\u7236\u985e\u6703\u5c0e\u81f4\u6240\u6709\u5b50\u985e\u5931\u6548\u3002\u6a21\u578b\u8b8a\u5f97\u50f5\u5316\u4e14\u96e3\u4ee5\u64f4\u5c55\u3002<\/li>\n<li><strong>\u89e3\u6c7a\u65b9\u6848\uff1a<\/strong> \u512a\u5148\u4f7f\u7528\u7d44\u5408\u800c\u975e\u7e7c\u627f\u3002\u5982\u679c\u985e\u5225\u5171\u4eab\u884c\u70ba\uff0c\u61c9\u5c07\u8a72\u884c\u70ba\u63d0\u53d6\u5230\u4e00\u500b\u7368\u7acb\u7684\u985e\u5225\u6216\u4ecb\u9762\u4e2d\uff0c\u4e26\u9032\u884c\u7d44\u5408\u3002\u78ba\u4fdd\u7e7c\u627f\u4ee3\u8868\u300c\u662f\u4e00\u7a2e\u300d\u95dc\u4fc2\uff0c\u800c\u975e\u300c\u6709\u4e00\u7a2e\u300d\u6216\u300c\u4f7f\u7528\u4e00\u7a2e\u300d\u95dc\u4fc2\u3002<\/li>\n<\/ul>\n<h2>10. \u6df7\u6dc6\u72c0\u614b\u8207\u884c\u70ba \ud83d\udd04<\/h2>\n<p>\u985e\u5225\u5716\u5c07\u5c6c\u6027\uff08\u72c0\u614b\uff09\u8207\u65b9\u6cd5\uff08\u884c\u70ba\uff09\u5206\u958b\u3002\u6a21\u7cca\u9019\u689d\u754c\u9650\u6703\u4f7f\u985e\u5225\u7684\u8cac\u4efb\u8b8a\u5f97\u4e0d\u660e\u78ba\u3002<\/p>\n<ul>\n<li><strong>\u554f\u984c\uff1a<\/strong> \u5c07\u8f14\u52a9\u51fd\u6578\u6216\u975c\u614b\u5de5\u5177\u65b9\u6cd5\u653e\u7f6e\u5728\u696d\u52d9\u5be6\u9ad4\u985e\u5225\u4e2d\u3002\u6216\u8005\uff0c\u5c07\u985e\u5225\u50c5\u8996\u70ba\u8cc7\u6599\u5bb9\u5668\uff0c\u4e0d\u5305\u542b\u4efb\u4f55\u884c\u70ba\u3002<\/li>\n<li><strong>\u5f71\u97ff\uff1a<\/strong> \u985e\u5225\u6703\u8b8a\u6210\u300c\u4e0a\u5e1d\u5c0d\u8c61\u300d\u6216\u300c\u8cc7\u6599\u888b\u300d\u3002\u7dad\u8b77\u8b8a\u5f97\u56f0\u96e3\uff0c\u56e0\u70ba\u696d\u52d9\u908f\u8f2f\u5206\u6563\u5728\u5404\u500b\u5de5\u5177\u985e\u5225\u4e2d\uff0c\u4e14\u8cc7\u6599\u672a\u7d93\u9a57\u8b49\u5c31\u88ab\u516c\u958b\u3002<\/li>\n<li><strong>\u89e3\u6c7a\u65b9\u6848\uff1a<\/strong> \u78ba\u4fdd\u6bcf\u500b\u985e\u5225\u90fd\u6709\u660e\u78ba\u7684\u8cac\u4efb\u3002\u4f7f\u7528\u65b9\u6cd5\u4f86\u5f37\u5236\u57f7\u884c\u72c0\u614b\u4e0a\u7684\u4e0d\u8b8a\u5f0f\u3002\u5c07\u5de5\u5177\u908f\u8f2f\u4fdd\u7559\u5728\u7368\u7acb\u7684\u670d\u52d9\u985e\u5225\u4e2d\u3002\u78ba\u8a8d\u985e\u5225\u5716\u53cd\u6620\u4e86\u55ae\u4e00\u8cac\u4efb\u539f\u5247\u3002<\/li>\n<\/ul>\n<h2>\u53ef\u8996\u5316\u4fee\u6b63\uff1a\u826f\u597d\u8207\u4e0d\u826f\u5be6\u52d9 \ud83d\udcca<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u932f\u8aa4\u985e\u5225<\/th>\n<th>\u4e0d\u826f\u5be6\u52d9\u7bc4\u4f8b<\/th>\n<th>\u4fee\u6b63\u5f8c\u7684\u5be6\u52d9<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u53ef\u898b\u6027<\/td>\n<td>\u6240\u6709\u5c6c\u6027\u7686\u70ba\u516c\u958b (+)<\/td>\n<td>\u79c1\u6709\u5c6c\u6027 (-)\uff0c\u516c\u958b\u65b9\u6cd5 (+)<\/td>\n<\/tr>\n<tr>\n<td>\u95dc\u4fc2<\/td>\n<td>\u4f7f\u7528\u8005\u8207\u8a02\u55ae\u4e4b\u9593\u7684\u9023\u7dda\u672a\u6a19\u793a\u57fa\u6578<\/td>\n<td>\u8a02\u55ae\u7aef\u6a19\u793a 1..*\uff0c\u4f7f\u7528\u8005\u7aef\u6a19\u793a 1<\/td>\n<\/tr>\n<tr>\n<td>\u62bd\u8c61<\/td>\n<td>\u985e\u5225\u5716\u5305\u542b\u8cc7\u6599\u5eab\u8868\u683c<\/td>\n<td>\u985e\u5225\u5716\u50c5\u5305\u542b\u9818\u57df\u5be6\u9ad4<\/td>\n<\/tr>\n<tr>\n<td>\u7e7c\u627f<\/td>\n<td>\u985e\u5225 A \u70ba\u5171\u7528\u7a0b\u5f0f\u78bc\u800c\u7e7c\u627f\u985e\u5225 B<\/td>\n<td>\u985e\u5225 A \u5be6\u4f5c\u4f86\u81ea\u985e\u5225 B \u7684\u4ecb\u9762 I<\/td>\n<\/tr>\n<tr>\n<td>\u547d\u540d<\/td>\n<td>\u985e\u5225\uff1a<code>Obj1<\/code><\/td>\n<td>\u985e\u5225\uff1a<code>\u5ba2\u6236\u8cc7\u6599\u6a94<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u96a8\u8457\u6642\u9593\u7dad\u6301\u5716\u8868\u5b8c\u6574\u6027 \ud83d\udd04<\/h2>\n<p>\u5efa\u7acb\u5716\u8868\u662f\u4e00\u6b21\u6027\u4efb\u52d9\uff1b\u7dad\u8b77\u5716\u8868\u5247\u662f\u6301\u7e8c\u7684\u904e\u7a0b\u3002\u96a8\u8457\u8edf\u9ad4\u7684\u6f14\u9032\uff0c\u5716\u8868\u4e5f\u5fc5\u9808\u8ddf\u8457\u6f14\u9032\u3002\u5ffd\u7565\u9019\u9805\u540c\u6b65\u6703\u5c0e\u81f4\u6587\u4ef6\u504f\u79fb\uff0c\u4f7f\u5f97\u5716\u8868\u4e0d\u518d\u53cd\u6620\u5be6\u969b\u60c5\u6cc1\u3002<\/p>\n<ul>\n<li><strong>\u7248\u672c\u63a7\u5236\uff1a<\/strong>\u5c07\u5716\u8868\u6a94\u6848\u5132\u5b58\u5728\u8207\u539f\u59cb\u78bc\u76f8\u540c\u7684\u7a0b\u5f0f\u5eab\u4e2d\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u8a2d\u8a08\u8b8a\u66f4\u8207\u7a0b\u5f0f\u78bc\u8b8a\u66f4\u4e00\u540c\u88ab\u5be9\u67e5\u3002<\/li>\n<li><strong>\u81ea\u52d5\u5316\u6aa2\u67e5\uff1a<\/strong>\u5728\u53ef\u80fd\u7684\u60c5\u6cc1\u4e0b\uff0c\u5f9e\u7a0b\u5f0f\u78bc\u7522\u751f\u5716\u8868\uff0c\u6216\u4ee5\u5716\u8868\u9a57\u8b49\u7a0b\u5f0f\u78bc\uff0c\u4ee5\u4fbf\u53ca\u65e9\u767c\u73fe\u5dee\u7570\u3002<\/li>\n<li><strong>\u5be9\u67e5\u9031\u671f\uff1a<\/strong>\u5c07\u5716\u8868\u8996\u70ba\u7a0b\u5f0f\u78bc\u5be9\u67e5\u6d41\u7a0b\u7684\u4e00\u90e8\u5206\u3002\u5982\u679c\u7a0b\u5f0f\u78bc\u6539\u8b8a\u4e86\u7d50\u69cb\uff0c\u5716\u8868\u5fc5\u9808\u5728\u5408\u4f75\u524d\u66f4\u65b0\u3002<\/li>\n<\/ul>\n<h2>\u7406\u89e3\u5716\u8868\u4e2d\u7684\u8026\u5408\u8207\u5167\u805a 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