{"id":1201,"date":"2021-12-26T02:34:45","date_gmt":"2021-12-25T18:34:45","guid":{"rendered":"http:\/\/dba.qishuo.xin\/?p=1201"},"modified":"2021-12-26T03:06:13","modified_gmt":"2021-12-25T19:06:13","slug":"%e6%95%b0%e6%8d%ae%e6%b5%81%e5%9b%be%e7%9a%84%e6%a6%82%e5%bf%b5%e4%bb%a5%e5%8f%8a%e5%a6%82%e4%bd%95%e7%94%bb%e5%a5%bd%e6%95%b0%e6%8d%ae%e6%b5%81%e5%9b%be","status":"publish","type":"post","link":"http:\/\/dba.qishuo.xin\/?p=1201","title":{"rendered":"\u6570\u636e\u6d41\u56fe\u7684\u6982\u5ff5\u4ee5\u53ca\u5982\u4f55\u753b\u597d\u6570\u636e\u6d41\u56fe"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 ez-toc-wrap-right counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-69e165ea4e039\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69e165ea4e039\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"http:\/\/dba.qishuo.xin\/?p=1201\/#1_%E4%BB%80%E4%B9%88%E6%98%AF%E6%95%B0%E6%8D%AE%E6%B5%81%E5%9B%BE\" >1. \u4ec0\u4e48\u662f\u6570\u636e\u6d41\u56fe?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"http:\/\/dba.qishuo.xin\/?p=1201\/#2_%E4%B8%BA%E4%BB%80%E4%B9%88%E7%BB%98%E7%94%BB%E6%95%B0%E6%8D%AE%E6%B5%81%E5%9B%BE%EF%BC%9F\" >2. \u4e3a\u4ec0\u4e48\u7ed8\u753b\u6570\u636e\u6d41\u56fe\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"http:\/\/dba.qishuo.xin\/?p=1201\/#3_%E6%95%B0%E6%8D%AE%E6%B5%81%E5%9B%BE%E7%9A%84%E7%AC%A6%E5%8F%B7\" >3. \u6570\u636e\u6d41\u56fe\u7684\u7b26\u53f7<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"http:\/\/dba.qishuo.xin\/?p=1201\/#31_%E7%A8%8B%E5%BA%8FProcess\" >3.1. \u7a0b\u5e8f(Process)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"http:\/\/dba.qishuo.xin\/?p=1201\/#32_%E6%95%B0%E6%8D%AE%E6%B5%81\" >3.2. \u6570\u636e\u6d41<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"http:\/\/dba.qishuo.xin\/?p=1201\/#33_%E6%95%B0%E6%8D%AE%E5%AD%98%E5%82%A8\" >3.3. \u6570\u636e\u5b58\u50a8<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p>\u8f6c\u8f7d\u4e8e\uff1a https:\/\/www.visual-paradigm.com\/cn\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1_%E4%BB%80%E4%B9%88%E6%98%AF%E6%95%B0%E6%8D%AE%E6%B5%81%E5%9B%BE\"><\/span>1. \u4ec0\u4e48\u662f\u6570\u636e\u6d41\u56fe?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u6570\u636e\u6d41\u56fe (DFD) \u7528\u4e8e\u8868\u793a\u4e1a\u52a1\u4fe1\u606f\u7cfb\u7edf\u4e2d\u7684\u6570\u636e\u6d41\uff0c\u5b83\u8868\u8fbe\u4e86\u7cfb\u7edf\u4e2d\u7684\u636e\u4f20\u4ece\u8f93\u5165\u5230\u5b58\u50a8\u95f4\u6240\u6d89\u53ca\u7684\u7a0b\u5e8f\u3002<\/p>\n<p>\u6570\u636e\u6d41\u56fe\u53ef\u4ee5\u5206\u4e3a\u903b\u8f91\u5f62\u548c\u7269\u7406\u5f62\u3002\u903b\u8f91\u6570\u636e\u6d41\u56fe\u63cf\u8ff0\u4e86\u7528\u4ee5\u5b8c\u6210\u67d0\u4e1a\u52a1\u529f\u80fd\u6240\u6d89\u53ca\u7684\u3001\u4e1a\u52a1\u5c42\u9762\u7684\u6570\u636e\u6d41\u52a8\uff0c \u7269\u7406\u6570\u636e\u6d41\u56fe\u5219\u63cf\u8ff0\u7cfb\u7edf\u5c42\u9762\u7684\u6570\u636e\u6d41\u52a8\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_%E4%B8%BA%E4%BB%80%E4%B9%88%E7%BB%98%E7%94%BB%E6%95%B0%E6%8D%AE%E6%B5%81%E5%9B%BE%EF%BC%9F\"><\/span>2. \u4e3a\u4ec0\u4e48\u7ed8\u753b\u6570\u636e\u6d41\u56fe\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u6570\u636e\u6d41\u56fe\u4ee5\u5c06\u7528\u4ee5\u5bfb\u627e\u3001\u7f16\u8f91\u3001\u5b58\u50a8\u548c\u5206\u53d1\u6570\u636e\u7684\u529f\u80fd\u6216\u8fc7\u7a0b\u56fe\u50cf\u5316\uff0c\u65b9\u4fbf\u7528\u6237\u548c\u7cfb\u7edf\u8bbe\u8ba1\u4eba\u5458\u6c9f\u901a\u3002\u6570\u636e\u6d41\u56fe\u7684\u7ed3\u6784\u4e5f\u5bb9\u8ba9\u5f00\u53d1\u4eba\u5458\u4ece\u9ad8\u70b9\u5206\u6790\u7cfb\u7edf\uff0c\u7ee7\u800c\u751f\u6210\u4e00\u7cfb\u5217\u7528\u4ee5\u6df1\u5165\u5206\u6790\u7684\u56fe\u8868\u3002\u6570\u636e\u6d41\u56fe\u88ab\u5e7f\u6cdb\u5e94\u7528\uff0c\u539f\u56e0\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u7528\u4e8e\u8868\u8fbe\u7cfb\u7edf\u7684\u903b\u8f91\u4fe1\u606f\u6d41<\/li>\n<li>\u7528\u4e8e\u5bfb\u627e\u7cfb\u7edf\u9700\u6c42<\/li>\n<li>\u7b80\u5355\u3001\u4ee5\u7406\u89e3\u7684\u56fe\u5f62\u7b26\u53f7<\/li>\n<li>\u5efa\u7acb\u624b\u52a8\u548c\u81ea\u52a8\u7cfb\u7edf\u9700\u6c42<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"3_%E6%95%B0%E6%8D%AE%E6%B5%81%E5%9B%BE%E7%9A%84%E7%AC%A6%E5%8F%B7\"><\/span>3. \u6570\u636e\u6d41\u56fe\u7684\u7b26\u53f7<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>\u6570\u636e\u6d41\u56fe\u6709\u56db\u4e2a\u57fa\u672c\u7b26\u53f7\u3002<\/strong><\/p>\n<h4><span class=\"ez-toc-section\" id=\"31_%E7%A8%8B%E5%BA%8FProcess\"><\/span>3.1. \u7a0b\u5e8f(Process)<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u4e00\u4e2a\u7a0b\u5e8f\u8d1f\u8d23\u63a5\u6536\u8f93\u5165\u7684\u6570\u636e\uff0c\u5e76\u4ea7\u751f\u5177\u6709\u4e0d\u540c\u5185\u5bb9\u6216\u5f62\u5f0f\u7684\u8f93\u51fa\u3002\u7a0b\u5e8f\u53ef\u4ee5\u7b80\u5355\u5982\u5c06\u6536\u96c6\u7684\u6570\u636e\u4fdd\u5b58\u5728\u6570\u636e\u5e93\uff0c\u4e5f\u6216\u8005\u590d\u6742\u5982\u5c06\u6570\u636e\u52a0\u4ee5\u5206\u6790\u5e76\u751f\u6210\u62a5\u8868\u3002<\/p>\n<p>\u6bcf\u4e2a\u7a0b\u5e8f\u90fd\u6709\u4e00\u4e2a\u540d\u79f0\u6765\u6807\u8bc6\u5b83\u6240\u6267\u884c\u7684\u529f\u80fd\u3002<\/p>\n<p>\u540d\u5b57\u7531\u4e00\u4e2a\u52a8\u8bcd\u7ec4\u6210\uff0c\u540e\u8ddf\u4e00\u4e2a\u5355\u6570\u540d\u8bcd\u3002<\/p>\n<ol>\n<li>\u4f8b\u5b50<\/li>\n<\/ol>\n<ul>\n<li>\u7533\u8bf7\u4ed8\u6b3e<\/li>\n<li>\u8ba1\u7b97\u4f63\u91d1<\/li>\n<li>\u9a8c\u8bc1\u8ba2\u5355<\/li>\n<\/ul>\n<ol start=\"2\">\n<li>\u7b26\u53f7<\/li>\n<\/ol>\n<ul>\n<li>\u5706\u89d2\u77e9\u5f62<\/li>\n<li>\u4e3a\u4e86\u4fbf\u4e8e\u53c2\u8003\uff0c\u7a0b\u5e8f\u90fd\u88ab\u8d4b\u4e88 ID<\/li>\n<\/ul>\n<p><a href=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_e8a3ac8a30bddfa551e897db945e09df.jpg\" data-fancybox=\"images\" data-fancybox=\"images\"><img decoding=\"async\" src=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_e8a3ac8a30bddfa551e897db945e09df.jpg\" alt=\"\" \/><\/a><\/p>\n<ol start=\"3\">\n<li>\u7a0b\u5e8f\u793a\u4f8b<\/li>\n<\/ol>\n<p><a href=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_561017c7669286edb682ce1cb24f9b1d.jpg\" data-fancybox=\"images\" data-fancybox=\"images\"><img decoding=\"async\" src=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_561017c7669286edb682ce1cb24f9b1d.jpg\" alt=\"\" \/><\/a><\/p>\n<h4><span class=\"ez-toc-section\" id=\"32_%E6%95%B0%E6%8D%AE%E6%B5%81\"><\/span>3.2. \u6570\u636e\u6d41<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u6570\u636e\u6d41\u662f\u6570\u636e\u4ece\u4fe1\u606f\u7cfb\u7edf\u7684\u4e00\u4e2a\u90e8\u5206\u79fb\u52a8\u5230\u53e6\u4e00\u4e2a\u90e8\u5206\u7684\u8def\u5f84\u3002\u6570\u636e\u6d41\u53ef\u4ee5\u8868\u793a\u5355\u4e2a\u6570\u636e\u5143\u7d20\uff0c\u4f8b\u5982\u5ba2\u6237 ID\uff0c\u6216\u8005\u4e00\u7ec4\u6570\u636e\u5143\u7d20 \uff08\u6216\u6570\u636e\u7ed3\u6784\uff09\u3002<\/p>\n<ol>\n<li>\u4f8b\u5b50<\/li>\n<\/ol>\n<ul>\n<li>Customer_info \uff08\u59d3\u6c0f\uff0c\u540d\u5b57\uff0cSS\uff03\uff0c\u7535\u8bdd\u53f7\u7801\u7b49\uff09<\/li>\n<li>Order_info \uff08OrderId\uff0cItem\uff03\uff0cOrderDate\uff0cCustomerID \u7b49\uff09\u3002<\/li>\n<\/ul>\n<ol start=\"2\">\n<li>\u7b26\u53f7<\/li>\n<\/ol>\n<ul>\n<li>\u5e26\u8f93\u5165\u7bad\u5934\u7684\u76f4\u7ebf\u5373\u4e3a\u8f93\u5165\u6570\u636e\u6d41<\/li>\n<li>\u5e26\u8f93\u51fa\u7bad\u5934\u7684\u76f4\u7ebf\u5373\u4e3a\u8f93\u51fa\u6570\u636e\u6d41<\/li>\n<\/ul>\n<p><span style='color:red'><br \/>\n\u6ce8\u610f\uff1a\u7531\u4e8e\u6bcf\u4e2a\u7a0b\u5e8f\u90fd\u5c06\u6570\u636e\u4ece\u4e00\u79cd\u5f62\u6001\u8f6c\u6362\u4e3a\u53e6\u4e00\u79cd\u5f62\u6001\uff0c\u6545\u6bcf\u4e2a\u7a0b\u5e8f\u5fc5\u987b\u81f3\u5c11\u6709\u4e00\u4e2a\u8f93\u5165\u6570\u636e\u6d41\u548c\u4e00\u4e2a\u8f93\u51fa\u6570\u636e\u6d41\u3002<br \/>\n<\/span><\/p>\n<ol start=\"3\">\n<li>\u6570\u636e\u6d41\u793a\u4f8b<\/li>\n<\/ol>\n<p><a href=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_2078c9dc75f916a970ff6a354297c8b4.jpg\" data-fancybox=\"images\" data-fancybox=\"images\"><img decoding=\"async\" src=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_2078c9dc75f916a970ff6a354297c8b4.jpg\" alt=\"\" \/><\/a><\/p>\n<ol start=\"4\">\n<li>\u4e00\u4e9b\u6570\u636e\u6d41\u7684\u89c4\u5219<\/li>\n<\/ol>\n<p>\u6570\u636e\u6d41\u56fe\u7684\u4e00\u5927\u539f\u5219\u662f\u6570\u636e\u4e0d\u80fd\u81ea\u884c\u8f6c\u6362\u6210\u53e6\u4e00\u5f62\u6001\uff0c\u6570\u636e\u5fc5\u987b\u7ecf\u7531\u67d0\u7a0b\u5e8f\u7684\u5904\u7406\u624d\u53ef\u88ab\u5206\u53d1\u81f3\u7cfb\u7edf\u7684\u67d0\u4e2a\u90e8\u4efd\u3002\u901a\u8fc7\u8fd9\u6761\u89c4\u5219\uff0c\u6211\u4eec\u53ef\u4ee5\u975e\u5e38\u5bb9\u6613\u5730\u8bc6\u522b\u51fa\u9519\u8bef\u7684\u753b\u6cd5\u5e76\u52a0\u4ee5\u7ea0\u6b63\u3002<\/p>\n<p><a href=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_95416400e95d0807eeb30f0c08dd1f8e.jpg\" data-fancybox=\"images\" data-fancybox=\"images\"><img decoding=\"async\" src=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_95416400e95d0807eeb30f0c08dd1f8e.jpg\" alt=\"\" \/><\/a><br \/>\n<strong><span style='color:red'><br \/>\n\u6ca1\u6709\u7ecf\u7531\u7a0b\u5e8f\u5904\u7406\uff0c\u6545\u5b9e\u4f53\u4e0d\u80fd\u5c06\u6570\u636e\u4f20\u9001\u81f3\u53e6\u4e00\u4e2a\u5b9e\u4f53\u3002<br \/>\n<\/span><\/strong><\/p>\n<p><a href=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_4866a8803eaba006ae09dbb869599728.jpg\" data-fancybox=\"images\" data-fancybox=\"images\"><img decoding=\"async\" src=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_4866a8803eaba006ae09dbb869599728.jpg\" alt=\"\" \/><\/a><br \/>\n<strong><span style='color:red'><br \/>\n\u6570\u636e\u4e0d\u80fd\u76f4\u63a5\u4ece\u5b9e\u4f53\u79fb\u52a8\u5230\u6570\u636e\u5b58\u50a8\u800c\u6ca1\u6709\u4e8b\u5148\u7ecf\u7531\u7a0b\u5e8f\u5904\u7406\u3002<br \/>\n<\/span><\/strong><\/p>\n<p><a href=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_3cf547d6380ec8153f18864e943ef74a.jpg\" data-fancybox=\"images\" data-fancybox=\"images\"><img decoding=\"async\" src=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_3cf547d6380ec8153f18864e943ef74a.jpg\" alt=\"\" \/><\/a><br \/>\n<strong><span style='color:red'><br \/>\n\u6570\u636e\u4e0d\u80fd\u76f4\u63a5\u4ece\u6570\u636e\u5b58\u50a8\u79fb\u52a8\u81f3\u5b9e\u4f53\u800c\u6ca1\u6709\u4e8b\u5148\u7ecf\u7531\u7a0b\u5e8f\u5904\u7406\u3002<br \/>\n<\/span><\/strong><\/p>\n<p><a href=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_e9e9d739091f717f2e3d696ab29e8e7e.jpg\" data-fancybox=\"images\" data-fancybox=\"images\"><img decoding=\"async\" src=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_e9e9d739091f717f2e3d696ab29e8e7e.jpg\" alt=\"\" \/><\/a><br \/>\n<strong><span style='color:red'><br \/>\n\u6570\u636e\u4e0d\u80fd\u76f4\u63a5\u4ece\u4e00\u4e2a\u6570\u636e\u5b58\u50a8\u79fb\u52a8\u5230\u53e6\u4e00\u4e2a\u6570\u636e\u5b58\u50a8\u800c\u6ca1\u6709\u4e8b\u5148\u7ecf\u7531\u7a0b\u5e8f\u5904\u7406\u3002<br \/>\n<\/span><\/strong><\/p>\n<ol start=\"5\">\n<li>\u5176\u4ed6\u5e38\u72af\u7684\u9519\u8bef<\/li>\n<\/ol>\n<p>\u5f53\u4e00\u4e2a\u7a0b\u5e8f\u6b65\u9aa4\u7684\u8f93\u51fa\u4e0e\u5176\u8f93\u5165\u4e0d\u5339\u914d\u65f6\uff0c\u4f1a\u51fa\u73b0\u7b2c\u4e8c\u7c7b\u9519\u8bef\uff0c\u5b83\u4eec\u53ef\u4ee5\u5206\u7c7b\u4e3a\uff1a<\/p>\n<ul>\n<li>\u9ed1\u6d1e - \u7a0b\u5e8f\u6b65\u9aa4\u53ef\u80fd\u6709\u8f93\u5165\u6d41\uff0c\u4f46\u6ca1\u6709\u8f93\u51fa\u6d41\u3002<\/li>\n<li>\u5947\u8ff9 - \u4e00\u4e2a\u7a0b\u5e8f\u6b65\u9aa4\u53ef\u80fd\u6709\u8f93\u51fa\u6d41\uff0c\u4f46\u6ca1\u6709\u8f93\u5165\u6d41\u3002<\/li>\n<li>\u7070\u5b54 - \u7a0b\u5e8f\u6b65\u9aa4\u7684\u8f93\u51fa\u53ef\u80fd\u5927\u4e8e\u5176\u8f93\u5165\u7684\u603b\u548c<\/li>\n<\/ul>\n<p><a href=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_9a3a37e8d6c419631873f14f1d017733.jpg\" data-fancybox=\"images\" data-fancybox=\"images\"><img decoding=\"async\" src=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_9a3a37e8d6c419631873f14f1d017733.jpg\" alt=\"\" \/><\/a><\/p>\n<h4><span class=\"ez-toc-section\" id=\"33_%E6%95%B0%E6%8D%AE%E5%AD%98%E5%82%A8\"><\/span>3.3. \u6570\u636e\u5b58\u50a8<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u5f53\u7cfb\u7edf\u5fc5\u987b\u4fdd\u7559\u6570\u636e\u4ee5\u8ba9\u4e00\u4e2a\u6216\u591a\u4e2a\u7a0b\u5e8f\u4f7f\u7528\u6216\u5b58\u50a8\u6570\u636e\uff0c\u4fbf\u53ef\u4ee5\u6570\u636e\u5b58\u50a8\u6765\u8868\u8fbe\u3002<\/p>\n<ol>\n<li>\u7b26\u53f7<\/li>\n<\/ol>\n<ul>\n<li>\u5c06\u6570\u636e\u5199\u5165\u6570\u636e\u5b58\u50a8\uff0c\u6570\u636e\u6d41\u8fde\u7ed3\u7ebf\u4ee5\u5916\u51fa\u7bad\u5934\u8868\u793a\u3002<\/li>\n<li>\u4ece\u6570\u636e\u5b58\u50a8\u4e2d\u8bfb\u53d6\u6570\u636e\uff0c\u6570\u636e\u6d41\u8fde\u7ed3\u7ebf\u4ee5\u8f93\u5165\u7bad\u5934\u8868\u793a\u3002<\/li>\n<li>\u4e00\u4e9b\u6570\u636e\u5b58\u50a8\u7684\u4f8b\u5b50\uff1a\u5e93\u5b58\uff0c\u5e94\u6536\u8d26\u6b3e\uff0c\u8ba2\u5355\u548c\u6bcf\u65e5\u4ed8\u6b3e\u3002<\/li>\n<\/ul>\n<p><a href=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_b608c72efca8a31efaed70b006db0a74.jpg\" data-fancybox=\"images\" data-fancybox=\"images\"><img decoding=\"async\" src=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_b608c72efca8a31efaed70b006db0a74.jpg\" alt=\"\" \/><\/a><\/p>\n<ol start=\"2\">\n<li>\u6570\u636e\u5b58\u50a8\u793a\u4f8b<\/li>\n<\/ol>\n<p><a href=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_605ce5f3b5e3491288d544883fba4949.jpg\" data-fancybox=\"images\" data-fancybox=\"images\"><img decoding=\"async\" src=\"http:\/\/dba.qishuo.xin\/wp-content\/uploads\/2021\/12\/wp_editor_md_605ce5f3b5e3491288d544883fba4949.jpg\" alt=\"\" \/><\/a><\/p>\n<p><strong><span style='color:red'><br \/>\n\u6ce8\u610f\uff1a<br \/>\n\u6570\u636e\u5b58\u50a8\u5fc5\u987b\u4ee5\u6570\u636e\u6d41\u8fde\u63a5\u5230\u7a0b\u5e8f\u3002<br \/>\n\u6bcf\u4e2a\u6570\u636e\u5b58\u50a8\u5fc5\u987b\u81f3\u5c11\u6709\u4e00\u4e2a\u8f93\u5165\u6570\u636e\u6d41\u548c\u81f3\u5c11\u4e00\u4e2a\u8f93\u51fa\u6570\u636e\u6d41\uff08\u5373\u4f7f\u8f93\u51fa\u6570\u636e\u6d41\u662f\u4e00\u4e2a\u786e\u8ba4\u8baf\u606f\uff09\u3002<br \/>\n<\/span><\/strong><\/p>\n<p>\u5916\u90e8\u5b9e\u4f53<br \/>\n\u5916\u90e8\u5b9e\u4f53\u662f\u5411\u7cfb\u7edf\u63d0\u4f9b\u6570\u636e\u6216\u4ece\u7cfb\u7edf\u63a5\u6536\u8f93\u51fa\u7684\u4eba\u3001\u90e8\u95e8\u3001\u5916\u90e8\u7ec4\u7ec7\u6216\u5176\u4ed6\u4fe1\u606f\u7cfb\u7edf\u3002\u5916\u90e8\u5b9e\u4f53\u662f\u4fe1\u606f\u7cfb\u7edf\u8fb9\u754c\u4e4b\u5916\u7684\u7ec4\u4ef6\uff0c\u5b83\u4eec\u4ee3\u8868\u4e86\u4fe1\u606f\u7cfb\u7edf\u5982\u4f55\u4e0e\u5916\u754c\u4ea4\u4e92\u3002<\/p>\n<p>\u77e9\u5f62<br \/>\n\u53ea\u63d0\u4f9b\u6216\u63a5\u6536\u6570\u636e<br \/>\n\u4e0d\u5904\u7406\u6570\u636e<br \/>\n\u7b26\u53f7<br \/>\n\u5ba2\u6237\u63d0\u4ea4\u8ba2\u5355\uff0c\u7136\u540e\u4ece\u7cfb\u7edf\u6536\u5230\u8d26\u5355<br \/>\n\u4f9b\u5e94\u5546\u53d1\u51fa\u53d1\u7968<br \/>\n\u6570\u636e\u6d41\u56fe\u7684\u5916\u90e8\u5b9e\u4f53<br \/>\n\u5916\u90e8\u5b9e\u4f53\u793a\u4f8b<br \/>\n\u6570\u636e\u6d41\u56fe\u7684\u5916\u90e8\u5b9e\u4f53\u7684\u793a\u4f8b<br \/>\n\u6ce8\u610f\uff1a<\/p>\n<p>\u5916\u90e8\u5b9e\u4f53\u4e5f\u88ab\u79f0\u4e3a\u7ec8\u6b62\u7b26\uff0c\u56e0\u4e3a\u5b83\u4eec\u662f\u6570\u636e\u7684\u6e90\u5934\u6216\u76ee\u7684\u5730\u3002<br \/>\n\u5fc5\u987b\u901a\u8fc7\u6570\u636e\u6d41\u5c06\u5916\u90e8\u5b9e\u4f53\u8fde\u63a5\u5230\u7a0b\u5e8f\u3002<br \/>\n\u9ad8\u81f3\u4f4e\u5206\u89e3 (Top-Down Decomposition)<br \/>\n\u9ad8\u81f3\u4f4e\u5206\u89e3\u7528\u4e8e\u5c55\u793a\u66f4\u591a\u7ec6\u8282\u3002\u900f\u8fc7\u5e73\u6574\uff0c\u6211\u4eec\u5c06\u7ed8\u5236\u51fa\u591a\u5f20\u6570\u636e\u6d41\u56fe\uff0c\u4e00\u5f20\u6bd4\u4e00\u5f20\u8be6\u7ec6\uff0c\u76f4\u5230\u8fbe\u5230\u6240\u9700\u7684\u7ec6\u8282\u5c42\u6b21\u4e3a\u6b62\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u6211\u4eec\u4f1a\u200b\u200b\u5148\u5728\u6700\u9ad8\u5c42\u6b21\u7684\u6570\u636e\u6d41\u56fe\u4e2d\u5c06\u76ee\u6807\u7cfb\u7edf\u8868\u8fbe\u6210\u5355\u4e2a\u7a0b\u5e8f\uff0c\u7136\u540e\u5c06\u7a0b\u5e8f\u5206\u89e3\u6210\u66f4\u591a\u5c42\u7684\u6570\u636e\u6d41\u56fe\uff0c\u4ee5\u8868\u8fbe\u66f4\u591a\u7ec6\u8282\uff0c\u76f4\u5230\u6240\u6709\u7a0b\u5e8f\u90fd\u662f\u529f\u80fd\u6027\u7a0b\u5e8f\u4e3a\u6b62\u3002<\/p>\n<p>\u6570\u636e\u6d41\u56fe\u4e4b\u95f4\u7684\u4e00\u81f4\u6027<br \/>\n\u5f53\u5bf9\u6570\u636e\u6d41\u56fe\u8fdb\u884c\u9ad8\u81f3\u4f4e\u5206\u89e3\u65f6\uff0c\u8f93\u5165\u548c\u8f93\u51fa\u6570\u636e\u6d41\u5fc5\u987b\u5728\u6570\u636e\u6d41\u56fe\u4e4b\u95f4\u4fdd\u5b58\u4e00\u81f4\u3002\u4f8b\u5982\uff0c\u7ea7\u522bn\uff06n + 1\u5fc5\u987b\u5177\u6709\u76f8\u540c\u7684\u8f93\u5165\u548c\u8f93\u51fa\u3002<\/p>\n<p>\u6570\u636e\u6d41\u56fe\u4e4b\u95f4\u7684\u4e00\u81f4\u6027<br \/>\n\u6570\u636e\u6d41\u56fe\u6307\u5357<br \/>\n\u80cc\u666f\u56fe - \u7b2c 0 \u9636<br \/>\n\u80cc\u666f\u56fe\u987b\u5bb9\u4e8e\u4e00\u4e2a\u9875\u9762\u4e2d (\u4e0d\u80fd\u8fc7\u5927)\u3002<br \/>\n\u80cc\u666f\u56fe\u4e2d\u7684\u7a0b\u5e8f\u540d\u79f0\u987b\u4e3a\u4fe1\u606f\u7cfb\u7edf\u7684\u540d\u79f0\u3002<br \/>\n\u4e00\u4e9b\u4f8b\u5b50\uff1a\u5206\u7ea7\u7cfb\u7edf\uff0c\u8ba2\u5355\u5904\u7406\u7cfb\u7edf\uff0c\u6ce8\u518c\u7cfb\u7edf\u3002<br \/>\n\u80cc\u666f\u56fe\u53c8\u88ab\u79f0\u4e3a\u7b2c 0 \u9636\u56fe\u3002<br \/>\n\u4f7f\u7528\u7368\u7279\u7684\u540d\u7a31<br \/>\n\u522b\u91cd\u8986\u4f7f\u7528\u76f8\u540c\u7684\u540d\u79f0\u8868\u8fbe\u4e0d\u540c\u7684\u6982\u5ff5\u3002<br \/>\n\u4f8b\u5982\uff0c\u5728\u4e0d\u540c\u5c42\u6b21\u7684\u6570\u636e\u6d41\u56fe\u4e2d\u53ea\u80fd\u6709\u4e00\u4e2a\u5b9e\u4f53 CUSTOMER\u3002<br \/>\n\u6570\u636e\u6d41\u56fe\u6ca1\u6709\u4ea4\u53c9\u7ebf<br \/>\n\u8fbe\u5230\u6b64\u76ee\u7684\u7684\u4e00\u79cd\u65b9\u6cd5\u662f\u4e25\u683c\u63a7\u5236\u6570\u636e\u6d41\u56fe\u4e2d\u7684\u7a0b\u5e8f\u6570\u3002<br \/>\n\u4eba\u7c7b\u53ea\u80fd\u540c\u65f6\u5904\u7406 7 + \/ - 2 \u4e2a\u7b26\u53f7<br \/>\n\u5728\u5177\u6709\u591a\u4e2a\u7a0b\u5e8f\u7684\u8f83\u4f4e\u9636\u7684\u6570\u636e\u6d41\u56fe\u4e2d\uff0c\u4e5f\u4e0d\u5e94\u8be5\u6709\u591a\u4e8e\u4e5d\u4e2a\u7a0b\u5e8f\u3002<br \/>\n\u907f\u514d\u4ea4\u53c9\u7ebf\u7684\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u590d\u5236\u5916\u90e8\u5b9e\u4f53\u6216\u6570\u636e\u5b58\u50a8\u3002\u4f7f\u7528\u7279\u6b8a\u7b26\u53f7\uff08\u5982\u661f\u53f7\uff09\u8868\u793a\u91cd\u590d\u7684\u7b26\u53f7\u3002<br \/>\n\u7f16\u53f7\u4e60\u60ef<br \/>\n\u4e3a\u6bcf\u4e2a\u7a0b\u5e8f\u7b26\u53f7\u4f7f\u7528\u4e00\u4e2a\u552f\u4e00\u7684\u53c2\u8003\u53f7\u7801\u3002<br \/>\n\u5176\u4ed6\u7a0b\u5e8f\u53f7\u7801\u5728\u4ee5\u4e0b\u5c42\u6b21\u4e2d\uff1a<br \/>\n(1, 2, 3,...);<br \/>\n(1.1, 1.2, 1.3, ..., 2.1, 2.2, 2.3,...);<br \/>\n(1.1.1, 1.1.2, 1.1.3,...).<br \/>\n\u80cc\u666f\u56fe<br \/>\n\u80cc\u666f\u56fe\u7528\u4e8e\u8868\u8fbe\u4e00\u4e2a\u7cfb\u7edf\u7684\u6982\u89c8\uff0c\u5b83\u662f\u6570\u636e\u6d41\u56fe\u4e2d\u7684\u6700\u9ad8\u7ea7\u522b\uff0c\u53ea\u5305\u542b\u4e00\u4e2a\u4ee3\u8868\u6574\u4e2a\u7cfb\u7edf\u7684\u7a0b\u5e8f\u3002\u8fd9\u7a0b\u5e8f\u4f1a\u88ab\u5206\u89e3\u6210\u66f4\u591a\u7ec6\u8282\u7684\u4e3b\u8981\u7a0b\u5e8f\uff0c\u6bcf\u4e2a\u4e3b\u8981\u7a0b\u5e8f\u53ef\u80fd\u4f1a\u8fdb\u4e00\u6b65\u5206\u89e3\u4ee5\u63d0\u4f9b\u66f4\u591a\u7ec6\u8282\u3002<\/p>\n<p>\u80cc\u666f\u56fe\u663e\u793a\u4e86\u6240\u6709\u7684\u5916\u90e8\u5b9e\u4f53\uff0c\u4ee5\u53ca\u6765\u81ea\u5b83\u4eec\u7684\u4e3b\u8981\u6570\u636e\u6d41\u3002<br \/>\n\u8be5\u56fe\u4e0d\u5305\u542b\u4efb\u4f55\u6570\u636e\u5b58\u50a8\u3002<br \/>\n\u80cc\u666f\u56fe\u7684\u5355\u4e2a\u7a0b\u5e8f\u53ef\u4ee5\u88ab\u5206\u89e3\u4e3a\u4e0b\u4e00\u7ea7\u56fe\u4e2d\u7684\u4e3b\u8981\u7a0b\u5e8f\uff0c\u5176\u88ab\u79f0\u4e3a\u7b2c 0 \u9636\u6570\u636e\u6d41\u56fe\u3002<br \/>\n\u6570\u636e\u6d41\u56fe\u7684\u80cc\u666f\u56fe\u793a\u4f8b<br \/>\n\u7b2c 1 \u9636\u6570\u636e\u6d41\u56fe<br \/>\n\u7b2c 0 \u9636\u6570\u636e\u6d41\u56fe\u4e2d\u7684\u7a0b\u5e8f \uff08\u5177\u6709\u6574\u6570\uff09\u53ef\u4ee5\u8fdb\u4e00\u6b65\u5206\u89e3\u4ee5\u8868\u793a\u7a0b\u5e8f\u7684\u7ec6\u8282\u3002\u4e0b\u9762\u7684\u4f8b\u5b50\u663e\u793a\u4e86\u7a0b\u5e8f\u88ab\u5206\u89e3\u6210\u4e0b\u4e00\u4e2a\u9636\u7ea7\uff08\u7b2c 1 \u9636\uff09\u3002<\/p>\n<p>\u6ce8\u610f\uff1a<\/p>\n<p>\u867d\u7136\u4e0b\u9762\u7684\u7b2c 1 \u968e\u6570\u636e\u6d41\u56fe\u53ea\u6709\u4e09\u4e2a\u7a0b\u5e8f 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