{"id":5585,"date":"2022-01-26T01:52:04","date_gmt":"2022-01-26T01:52:04","guid":{"rendered":"https:\/\/www.cybermedian.com\/tw\/?p=5585"},"modified":"2026-04-20T09:13:11","modified_gmt":"2026-04-20T09:13:11","slug":"%e9%80%90%e6%ad%a5%e7%b4%b0%e5%8c%96%e9%96%8b%e7%99%bc-dfd","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/tw\/develop-dfd-with-stepwise-refinement\/","title":{"rendered":"\u9010\u6b65\u7d30\u5316\u958b\u767c DFD"},"content":{"rendered":"<p id=\"1cbb\" class=\"graf graf--p graf-after--h3\"><a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/\">\u6578\u64da\u6d41\u5716\u00a0<\/a>(DFDS) \u8868\u793a\u901a\u904e\u7cfb\u7d71\u7684\u4fe1\u606f\u6d41\u3002DFD \u5f88\u5feb\u6210\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u65b9\u5f0f\u4f86\u53ef\u8996\u5316\u8edf\u4ef6\u7cfb\u7d71\u904e\u7a0b\u4e2d\u6d89\u53ca\u7684\u4e3b\u8981\u6b65\u9a5f\u548c\u6578\u64da\u3002<\/p>\n<p id=\"b108\" class=\"graf graf--p graf-after--p\">\u6578\u64da\u6d41\u5716 (DFD) \u662f\u8868\u793a\u6d41\u7a0b\u6216\u7cfb\u7d71\uff08\u901a\u5e38\u662f\u4fe1\u606f\u7cfb\u7d71\uff09\u7684\u6578\u64da\u6d41\u7684\u4e00\u7a2e\u65b9\u5f0f\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul class=\"postList\">\n<li id=\"0e20\" class=\"graf graf--li graf-after--p\">\u6578\u64da\u5f9e\u4f55\u800c\u4f86\uff1f<\/li>\n<li id=\"6a76\" class=\"graf graf--li graf-after--li\">\u5b83\u53bb\u54ea\u5152\u4e86\uff1f<\/li>\n<li id=\"2dec\" class=\"graf graf--li graf-after--li\">\u5b83\u662f\u5982\u4f55\u5b58\u5132\u7684\uff1f<\/li>\n<\/ul>\n<p id=\"f2d7\" class=\"graf graf--p graf-after--li\">\u63db\u53e5\u8a71\u8aaa\uff0c\u5b83\u986f\u793a\u4e86\u7cfb\u7d71\u5982\u4f55\u4f7f\u7528\u81ea\u4e0a\u800c\u4e0b\u7684\u5206\u89e3\u6280\u8853\uff08\u6216\u7a31\u70ba\u9010\u6b65\u7d30\u5316\uff09\u5728\u8f38\u5165\u548c\u8f38\u51fa\u65b9\u9762\u8655\u7406\u6578\u64da\u3002<\/p>\n<h4 id=\"aad7\" class=\"graf graf--h4 graf-after--p\"><span id=\"What_is_Stepwise_Refinement\">\u4ec0\u9ebc\u662f\u9010\u6b65\u7d30\u5316\uff1f<\/span><\/h4>\n<p id=\"5056\" class=\"graf graf--p graf-after--h4\">\u89e3\u6c7a\u8907\u96dc\u554f\u984c\u7684\u6709\u6548\u65b9\u6cd5\u4e4b\u4e00\u662f\u5c07\u5176\u5206\u89e3\u70ba\u66f4\u7c21\u55ae\u7684\u5b50\u554f\u984c\u3002\u60a8\u9996\u5148\u5c07\u6574\u500b\u4efb\u52d9\u5206\u89e3\u70ba\u66f4\u7c21\u55ae\u7684\u90e8\u5206\u3002<\/p>\n<p id=\"df59\" class=\"graf graf--p graf-after--p\">\u9010\u6b65\u7d30\u5316\u672c\u8cea\u4e0a\u662f\u5c0d\u7cfb\u7d71\u9032\u884c\u5206\u89e3\uff0c\u4ee5\u6df1\u5165\u4e86\u89e3\u69cb\u6210\u7cfb\u7d71\u7684\u5b50\u7cfb\u7d71\uff0c\u7a31\u70ba\u81ea\u9802\u5411\u4e0b\u5206\u89e3\u6cd5\u3002<\/p>\n<p id=\"2165\" class=\"graf graf--p graf-after--p\">\u4f8b\u5982\uff0c\u7cfb\u7d71\u6982\u8ff0\u88ab\u958b\u767c\u70ba\u00a0<a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/online.visual-paradigm.com\/knowledge\/software-design\/dfd-tutorial-yourdon-notation\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/knowledge\/software-design\/dfd-tutorial-yourdon-notation\/\">\u7cfb\u7d71\u4e0a\u4e0b\u6587\u5716\u00a0<\/a>\uff0c\u5b83\u6307\u5b9a\u4f46\u4e0d\u6307\u5b9a\u5b50\u7cfb\u7d71\u7684\u4efb\u4f55\u7d1a\u5225\u3002\u7136\u5f8c\u5c07\u9019\u4e9b\u5b50\u7cfb\u7d71\u4e2d\u7684\u6bcf\u4e00\u500b\u7d30\u5316\u5230\u66f4\u8a73\u7d30\u7684\u7a0b\u5ea6\uff08\u4f8b\u5982 DFD \u4e2d\u7684\u7d1a\u5225 0\u30011\u30012 \u7b49\uff09\uff0c\u6709\u6642\u5728\u8a31\u591a\u5176\u4ed6\u5b50\u7cfb\u7d71\u7d1a\u5225\u4e0a\u9032\u884c\u7d30\u5316\uff0c\u76f4\u5230\u6574\u500b\u898f\u7bc4\u7c21\u5316\u70ba\u57fa\u672c\u5143\u7d20\u3002<\/p>\n<p id=\"c0eb\" class=\"graf graf--p graf-after--p\">\u901a\u5e38\uff0c\u982d\u8166\u98a8\u66b4\u7522\u751f\u7684\u60f3\u6cd5\uff08\u5be6\u969b\u4e0a\u662f\u6211\u5011\u7684\u5f85\u8fa6\u4e8b\u9805\uff09\u8655\u65bc\u4e0d\u540c\u7684\u201c\u7d30\u7bc0\u201d\u7d1a\u5225\u2014\u2014\u5176\u4e2d\u4e00\u4e9b\u6bd4\u5176\u4ed6\u201c\u4f4e\u7d1a\u201d\uff0c\u6216\u8005\uff0c\u6211\u5011\u53ef\u4ee5\u8aaa\uff0c\u4e00\u4e9b\u5305\u542b\u5176\u4ed6\u3002<\/p>\n<p id=\"2d53\" class=\"graf graf--p graf-after--p\">\u8b93\u6211\u5011\u6309\u5c64\u6b21\u6392\u5217\u9019\u4e9b\u3002\u63db\u53e5\u8a71\u8aaa\uff0c\u8b93\u6211\u5011\u78ba\u5b9a\u54ea\u4e9b\u6b65\u9a5f\u662f\u53e6\u4e00\u500b\u6b65\u9a5f\u7684\u4e00\u90e8\u5206\u3002\u4e00\u7a2e\u65b9\u6cd5\u662f\u5c07\u6bcf\u500b\u52d5\u4f5c\u8996\u70ba\u4e00\u7d44\u52d5\u4f5c\u3002<\/p>\n<h4 id=\"3e6e\" class=\"graf graf--h4 graf-after--p\"><span id=\"Stepwise_Refinement_Example\">\u9010\u6b65\u7d30\u5316\u793a\u4f8b<\/span><\/h4>\n<figure id=\"8d2f\" class=\"graf graf--figure graf-after--h4\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/tw\/wp-content\/uploads\/sites\/5\/2022\/01\/0qxK-mPAO_MWdNpr0.gif\" data-image-id=\"0*qxK-mPAO_MWdNpr0.gif\" data-is-featured=\"true\" \/><\/figure>\n<h4 id=\"645d\" class=\"graf graf--h4 graf-after--figure\"><span id=\"Clean_house\"><strong class=\"markup--strong markup--h4-strong\"><em class=\"markup--em markup--h4-em\">\u6536\u62fe\u5c4b\u5b50<\/em><\/strong><\/span><\/h4>\n<blockquote id=\"4d28\" class=\"graf graf--blockquote graf-after--h4\"><p>{\u771f\u7a7a\u9910\u5ef3\uff0c\u6574\u7406\u5ba2\u5ef3}<\/p><\/blockquote>\n<h4 id=\"8321\" class=\"graf graf--h4 graf-after--blockquote\"><span id=\"Cook\"><strong class=\"markup--strong markup--h4-strong\"><em class=\"markup--em markup--h4-em\">\u5eda\u5e2b<\/em><\/strong><\/span><\/h4>\n<blockquote id=\"7a12\" class=\"graf graf--blockquote graf-after--h4\"><p>{\u9078\u64c7\u98df\u8b5c\uff0c\u8cfc\u8cb7\u98df\u6750\uff0c\u70e4\u96de\u3002\u505a\u852c\u83dc}<\/p><\/blockquote>\n<h4 id=\"c7f4\" class=\"graf graf--h4 graf-after--blockquote\"><span id=\"Set_Table\"><em class=\"markup--em markup--h4-em\">\u8a2d\u7f6e\u8868<\/em><\/span><\/h4>\n<blockquote id=\"2932\" class=\"graf graf--blockquote graf-after--h4\"><p>{<em class=\"markup--em markup--blockquote-em\">\u627e\u684c\u5e03 , \u62ff\u51fa\u76e4\u5b50 , \u62ff\u51fa\u73bb\u7483\u5668\u76bf , \u62ff\u51fa\u9280\u5668 , \u9910\u5dfe<\/em>}<\/p><\/blockquote>\n<h4 id=\"558c\" class=\"graf graf--h4 graf-after--blockquote\"><span id=\"Roast_chicken\"><em class=\"markup--em markup--h4-em\">\u70e4\u96de<\/em><\/span><\/h4>\n<blockquote id=\"ade9\" class=\"graf graf--blockquote graf-after--h4\"><p>{<em class=\"markup--em markup--blockquote-em\">\u70e4\u7bb1\u9810\u71b1\u81f3\u00a0<\/em>400 \u5ea6\uff0c\u00a0<em class=\"markup--em markup--blockquote-em\">\u5c07\u96de\u8089\u653e\u5165\u934b\u4e2d\uff0c\u5c07\u96de\u8089\u653e\u5165\u00a0<\/em>400\u00a0<em class=\"markup--em markup--blockquote-em\">\u5ea6\u70e4\u7bb1\u4e2d\u00a0<\/em>90\u00a0<em class=\"markup--em markup--blockquote-em\">\u5206\u9418<\/em>}<\/p><\/blockquote>\n<h4 id=\"6e69\" class=\"graf graf--h4 graf-after--blockquote\"><span id=\"Do_Veggie\"><em class=\"markup--em markup--h4-em\">\u505a\u7d20\u98df<\/em><\/span><\/h4>\n<blockquote id=\"1335\" class=\"graf graf--blockquote graf-after--h4\"><p>{<em class=\"markup--em markup--blockquote-em\">\u5207\u83dc\uff0c\u716e\u83dc<\/em>}<\/p><\/blockquote>\n<p id=\"0e0c\" class=\"graf graf--p graf-after--blockquote\">\uff08*\u4f86\u6e90\uff1a\u00a0<a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/en.wikibooks.org\/wiki\/A-level_Computing\/AQA\/Problem_Solving,_Programming,_Data_Representation_and_Practical_Exercise\/Problem_Solving\/Top-down_design_and_Step-wise_refinement\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/en.wikibooks.org\/wiki\/A-level_Computing\/AQA\/Problem_Solving,_Programming,_Data_Representation_and_Practical_Exercise\/Problem_Solving\/Top-down_design_and_Step-wise_refinement\">\u81ea\u4e0a\u800c\u4e0b\u7684\u8a2d\u8a08\u548c\u9010\u6b65\u7d30\u5316\u2014\u2014\u7dad\u57fa\u66f8\u7c4d<\/a>\uff09<\/p>\n<p id=\"bc4f\" class=\"graf graf--p graf-after--p\">\u4e00\u65e6\u78ba\u5b9a\u4e86\u9019\u4e9b\u57fa\u672c\u5143\u7d20\uff0c\u6211\u5011\u5c31\u53ef\u4ee5\u5c07\u5b83\u5011\u69cb\u5efa\u5230\u8a08\u7b97\u6a5f\u6a21\u584a\u4e2d\u3002\u4e00\u65e6\u5b83\u5011\u5efa\u6210\uff0c\u6211\u5011\u5c31\u53ef\u4ee5\u5c07\u5b83\u5011\u7d44\u5408\u5728\u4e00\u8d77\uff0c\u4e26\u7528\u9019\u4e9b\u55ae\u7368\u7684\u7d44\u4ef6\u7d44\u6210\u6574\u500b\u7cfb\u7d71\u3002<\/p>\n<h3 id=\"854f\" class=\"graf graf--h3 graf-after--p\"><span id=\"Top-Down_Decomposition_Technique_in_DFD\">DFD\u4e2d\u7684\u81ea\u9802\u5411\u4e0b\u5206\u89e3\u6280\u8853<\/span><\/h3>\n<p id=\"167e\" class=\"graf graf--p graf-after--h3\">\u5728 DFD \u4e2d\uff0c\u00a0<a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/online.visual-paradigm.com\/knowledge\/software-design\/dfd-tutorial-yourdon-notation\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/knowledge\/software-design\/dfd-tutorial-yourdon-notation\/\">\u81ea\u4e0a\u800c\u4e0b\u7684\u5206\u89e3<\/a>\u00a0\uff08\u4e5f\u7a31\u70ba\u5206\u7d1a\u6216\u9010\u6b65\u7d30\u5316\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u5728\u8f03\u4f4e\u7d1a\u5225\u7684 DFD \u4e2d\u986f\u793a\u66f4\u591a\u7d30\u7bc0\u7684\u6280\u8853\u3002\u8abf\u5e73\u662f\u901a\u904e\u7e6a\u88fd\u4e00\u7cfb\u5217\u8d8a\u4f86\u8d8a\u8a73\u7d30\u7684\u5716\u8868\u4f86\u5b8c\u6210\u7684\uff0c\u76f4\u5230\u9054\u5230\u6240\u9700\u7684\u8a73\u7d30\u7a0b\u5ea6\u3002\u5982\u5716\u6240\u793a\uff0cDFD Leveling \u9996\u5148\u5c07\u76ee\u6a19\u7cfb\u7d71\u986f\u793a\u70ba\u55ae\u500b\u9032\u7a0b\uff0c\u7136\u5f8c\u986f\u793a\u66f4\u591a\u7d30\u7bc0\uff0c\u76f4\u5230\u6240\u6709\u9032\u7a0b\u90fd\u662f\u529f\u80fd\u539f\u8a9e\u3002<\/p>\n<figure id=\"6dc4\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/tw\/wp-content\/uploads\/sites\/5\/2022\/01\/0TZMKm3bnkiFJpb4s.png\" data-image-id=\"0*TZMKm3bnkiFJpb4s.png\" data-width=\"882\" data-height=\"549\" \/><\/figure>\n<ul class=\"postList\">\n<li id=\"0b42\" class=\"graf graf--li graf-after--figure\">\u66f4\u9ad8\u7d1a\u5225\u7684 DFD \u4e0d\u592a\u8a73\u7d30<\/li>\n<li id=\"2991\" class=\"graf graf--li graf-after--li\">\u9ad8\u5c64 DFD \u5c07\u88ab\u5206\u89e3\u70ba\u66f4\u8a73\u7d30\u7684\u4f4e\u5c64 DFD<\/li>\n<li id=\"fa92\" class=\"graf graf--li graf-after--li\">\u4e0a\u4e0b\u6587\u5716\u662f\u5c64\u6b21\u7d50\u69cb\u4e2d\u6700\u9ad8\u7684\uff08\u8acb\u53c3\u95b1 DFD \u5275\u5efa\u898f\u5247\uff09\u3002\u6240\u8b02\u7684\u96f6\u7d1a\u5f8c\u9762\u662fDFD 0\uff0c\u5f9e\u9032\u7a0b\u7de8\u865f\u958b\u59cb\uff08EG\uff0c\u9032\u7a0b1\uff0c\u9032\u7a0b2\uff09\u3002<\/li>\n<li id=\"b9b5\" class=\"graf graf--li graf-after--li\">\u63a5\u4e0b\u4f86\uff0c\u6240\u8b02\u7684\u7b2c\u4e00\u5c64\u2014\u2014DFD 1\u2014\u2014\u7e7c\u7e8c\u7de8\u865f\u3002EG Process 1\u5206\u70baDFD\u7684\u524d\u4e09\u500b\u5c64\u6b21\uff0c\u5206\u5225\u7de8\u865f\u70ba1.1\u30011.2\u548c1.3\u3002<\/li>\n<li id=\"cadf\" class=\"graf graf--li graf-after--li\">\u540c\u6a23\uff0c\u7b2c\u4e8c\u7d1a (DFD 2) \u4e2d\u7684\u6d41\u7a0b\u7de8\u865f\u70ba EG 1.1.1\u30011.1.2\u30011.1.3 \u548c 1.1.4\u3002<\/li>\n<li id=\"fce7\" class=\"graf graf--li graf-after--li\">\u7d1a\u5225\u7684\u6578\u91cf\u53d6\u6c7a\u65bc\u6a21\u578b\u7cfb\u7d71\u7684\u5927\u5c0f\u3002\u7d1a\u5225 0 \u4e2d\u7684\u6bcf\u500b\u904e\u7a0b\u53ef\u80fd\u6c92\u6709\u76f8\u540c\u6578\u91cf\u7684\u5206\u89e3\u7d1a\u5225\u3002<\/li>\n<\/ul>\n<h3 id=\"a916\" class=\"graf graf--h3 graf-after--li\"><span id=\"DFD_Examples_Customer_Services_System_Example\">DFD \u793a\u4f8b \u2014 \u5ba2\u6236\u670d\u52d9\u7cfb\u7d71\u793a\u4f8b<\/span><\/h3>\n<p id=\"ad47\" class=\"graf graf--p graf-after--h3\">\u6578\u64da\u6d41\u5716\u662f\u4e00\u500b\u5c64\u6b21\u7d50\u69cb\u5716\uff0c\u5305\u62ec\uff1a<\/p>\n<ol class=\"postList\">\n<li id=\"a743\" class=\"graf graf--li graf-after--p\">\u4e0a\u4e0b\u6587\u5716\uff08\u6982\u5ff5\u4e0a\u70ba\u96f6\u7d1a\uff09<\/li>\n<li id=\"2a86\" class=\"graf graf--li graf-after--li\">1 \u7d1a DFD<\/li>\n<li id=\"210c\" class=\"graf graf--li graf-after--li\">\u4ee5\u53ca\u53ef\u80fd\u7684 2 \u7d1a DFD \u548c\u66f4\u591a\u7d1a\u5225\u7684\u529f\u80fd\u5206\u89e3\uff0c\u5177\u9ad4\u53d6\u6c7a\u65bc\u7cfb\u7d71\u7684\u8907\u96dc\u6027<\/li>\n<\/ol>\n<h3 id=\"0d08\" class=\"graf graf--h3 graf-after--li\"><span id=\"Context_DFD\">\u4e0a\u4e0b\u6587 DFD<\/span><\/h3>\n<p id=\"e943\" class=\"graf graf--p graf-after--h3\">\u4e0b\u5716\u986f\u793a\u4e86\u70ba\u9435\u8def\u516c\u53f8\u7684\u5ba2\u6236\u670d\u52d9\u7cfb\u7d71\u7e6a\u88fd\u7684\u4e0a\u4e0b\u6587\u6578\u64da\u6d41\u5716\u3002\u5b83\u5305\u542b\u4e00\u500b\u904e\u7a0b\uff08\u5f62\u72c0\uff09\uff0c\u8868\u793a\u8981\u5efa\u6a21\u7684\u7cfb\u7d71\uff0c\u5728\u672c\u4f8b\u4e2d\u70ba\u201c\u00a0<em class=\"markup--em markup--p-em\">CS \u7cfb\u7d71<\/em>\u201d\u3002\u5b83\u9084\u986f\u793a\u4e86\u5c07\u8207\u7cfb\u7d71\u4ea4\u4e92\u7684\u53c3\u8207\u8005\uff0c\u7a31\u70ba\u5916\u90e8\u5be6\u9ad4\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u00a0\u00a0<em class=\"markup--em markup--p-em\">CS \u52a9\u624b<\/em>\u00a0\u548c\u00a0<em class=\"markup--em markup--p-em\">\u4e58\u5ba2<\/em>\u00a0\u662f\u8207\u7cfb\u7d71\u4ea4\u4e92\u7684\u5169\u500b\u5be6\u9ad4\u3002\u5728\u6d41\u7a0b\u548c\u5916\u90e8\u5be6\u9ad4\u4e4b\u9593\uff0c\u5b58\u5728\u6578\u64da\u6d41\uff08\u9023\u63a5\u5668\uff09\uff0c\u8868\u660e\u5be6\u9ad4\u548c\u7cfb\u7d71\u4e4b\u9593\u5b58\u5728\u4fe1\u606f\u4ea4\u63db\u3002<\/p>\n<figure id=\"06d3\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/tw\/wp-content\/uploads\/sites\/5\/2022\/01\/0zfUxDeKMy-91D4jJ.png\" data-image-id=\"0*zfUxDeKMy-91D4jJ.png\" data-width=\"567\" data-height=\"121\" \/><\/figure>\n<p id=\"844b\" class=\"graf graf--p graf-after--figure\"><a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=YourdonandCoadDiagram&amp;gallery=\/repository\/dd87bf2b-0fad-4f7e-8a58-d085c722a254.xml&amp;name=CS%20System%20Context%20DFD\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=YourdonandCoadDiagram&amp;gallery=\/repository\/dd87bf2b-0fad-4f7e-8a58-d085c722a254.xml&amp;name=CS%20System%20Context%20DFD\">\u7de8\u8f2f\u6b64 Yourdon \u548c Coad DFD \u793a\u4f8b<\/a><\/p>\n<p id=\"3215\" class=\"graf graf--p graf-after--p\">\u4e0a\u4e0b\u6587 DFD \u662f\u6578\u64da\u6d41\u6a21\u578b\u7684\u5165\u53e3\u3002\u5b83\u5305\u542b\u4e00\u500b\u4e14\u53ea\u6709\u4e00\u500b\u9032\u7a0b\uff0c\u4e26\u4e14\u4e0d\u986f\u793a\u4efb\u4f55\u6578\u64da\u5b58\u5132\u3002<\/p>\n<h3 id=\"1293\" class=\"graf graf--h3 graf-after--p\"><span id=\"Level_1_DFD\">1\u7d1aDFD<\/span><\/h3>\n<p id=\"1b45\" class=\"graf graf--p graf-after--h3\">\u4e0b\u5716\u986f\u793a\u4e861\u7d1aDFD\uff0c\u5b83\u662f\u4e0a\u4e0b\u6587DFD\u4e2d\u986f\u793a\u7684CS System\u6d41\u7a0b\u7684\u5206\u89e3\uff08\u5373\u5206\u89e3\uff09\u3002\u901a\u8b80\u8a72\u5716\uff0c\u7136\u5f8c\u6211\u5011\u5c07\u6839\u64da\u8a72\u5716\u4ecb\u7d39\u4e00\u4e9b\u95dc\u9375\u6982\u5ff5\u3002<\/p>\n<figure id=\"b267\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/tw\/wp-content\/uploads\/sites\/5\/2022\/01\/009gCEUHhCzVfNZeE.png\" data-image-id=\"0*09gCEUHhCzVfNZeE.png\" data-width=\"695\" data-height=\"542\" \/><\/figure>\n<p id=\"f97e\" class=\"graf graf--p graf-after--figure\"><a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=YourdonandCoadDiagram&amp;gallery=\/repository\/d592ccb3-23ca-4bee-8ccb-c6f66e90f921.xml&amp;name=CS%20System%20Level%201%20DFD\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=YourdonandCoadDiagram&amp;gallery=\/repository\/d592ccb3-23ca-4bee-8ccb-c6f66e90f921.xml&amp;name=CS%20System%20Level%201%20DFD\">\u7de8\u8f2f\u6b64 Yourdon \u548c Coad \u5716\u793a\u4f8b<\/a><\/p>\n<p id=\"1903\" class=\"graf graf--p graf-after--p\">CS \u7cfb\u7d71\u6578\u64da\u6d41\u5716\u793a\u4f8b\u5305\u542b\u56db\u500b\u9032\u7a0b\u3001\u5169\u500b\u5916\u90e8\u5be6\u9ad4\u548c\u56db\u500b\u6578\u64da\u5b58\u5132\u3002\u96d6\u7136\u6c92\u6709\u8a2d\u8a08\u6307\u5357\u4f86\u7ba1\u7406\u6578\u64da\u6d41\u5716\u4e2d\u5f62\u72c0\u7684\u4f4d\u7f6e\uff0c\u4f46\u6211\u5011\u50be\u5411\u65bc\u5c07\u6d41\u7a0b\u653e\u5728\u4e2d\u9593\uff0c\u5c07\u6578\u64da\u5b58\u5132\u548c\u5916\u90e8\u5be6\u9ad4\u653e\u5728\u5169\u5074\uff0c\u4ee5\u4fbf\u66f4\u5bb9\u6613\u7406\u89e3\u3002<\/p>\n<p id=\"1ad6\" class=\"graf graf--p graf-after--p\">\u7531\u5716\u53ef\u77e5\uff0c\u00a0\u00a0<em class=\"markup--em markup--p-em\">Passenger<\/em>\u00a0\u53ef\u4ee5\u00a0\u00a0\u5f9e\u00a0<em class=\"markup--em markup--p-em\">Inquiry Transport Details\u6d41\u7a0b\u4e2d\u63a5\u6536\u5230<\/em><em class=\"markup--em markup--p-em\">Transport \u8a73\u7d30<\/em>\u4fe1\u606f\u00a0\uff0c\u8a73\u7d30\u4fe1\u606f\u7531\u6578\u64da\u5b58\u5132\u00a0<em class=\"markup--em markup--p-em\">Transport Details<\/em>\u00a0\u548c\u00a0<em class=\"markup--em markup--p-em\">Railway Live Statistic<\/em>\u63d0\u4f9b\u3002\u96d6\u7136\u5b58\u5132\u5728\u00a0<em class=\"markup--em markup--p-em\">\u904b\u8f38\u8a73\u7d30\u4fe1\u606f<\/em>\u00a0\u4e2d\u7684\u6578\u64da\u662f\u6301\u4e45\u6578\u64da\uff08\u7531\u6a19\u7c64\u201cD\u201d\u8868\u793a\uff09\uff0c\u4f46\u5b58\u5132\u5728\u00a0<em class=\"markup--em markup--p-em\">\u9435\u8def\u5be6\u6642\u7d71\u8a08<\/em>\u00a0\u4e2d\u7684\u6578\u64da\u662f\u77ed\u66ab\u4fdd\u5b58\u7684\u6578\u64da\uff08\u7531\u6a19\u7c64\u201cT\u201d\u8868\u793a\uff09\u3002\u6a19\u8a3b\u5f62\u72c0\u7528\u65bc\u5217\u51fa\u4e58\u5ba2\u53ef\u4ee5\u67e5\u8a62\u7684\u8a73\u7d30\u4fe1\u606f\u985e\u578b\u3002<\/p>\n<p id=\"ef88\" class=\"graf graf--p graf-after--p\"><em class=\"markup--em markup--p-em\">CS Assistant<\/em>\u00a0\u53ef\u4ee5\u555f\u52d5\u00a0<em class=\"markup--em markup--p-em\">\u8cfc\u8cb7\u7d00\u5ff5\u54c1<\/em>\u00a0\u6d41\u7a0b\uff0c\u9019\u5c07\u5c0e\u81f4\u5c07\u00a0<em class=\"markup--em markup--p-em\">\u8a02\u55ae\u8a73\u7d30\u4fe1\u606f<\/em>\u00a0\u5b58\u5132\u5728\u00a0<em class=\"markup--em markup--p-em\">\u8a02\u55ae<\/em>\u00a0\u6578\u64da\u5b58\u5132\u4e2d\u3002\u96d6\u7136\u5ba2\u6236\u662f\u8cfc\u8cb7\u7d00\u5ff5\u54c1\u7684\u771f\u5be6\u4eba\uff0c\u4f46\u00a0\u00a0\u8a2a\u554f\u7cfb\u7d71\u4ee5\u5b58\u5132\u8a02\u55ae\u8a73\u7d30\u4fe1\u606f\u7684\u662f<em class=\"markup--em markup--p-em\">CS\u52a9\u624b\u3002<\/em>\u56e0\u6b64\uff0c\u6211\u5011\u5c07\u6578\u64da\u5f9e\u00a0<em class=\"markup--em markup--p-em\">CS Assistant<\/em>\u00a0\u6d41\u5411\u00a0<em class=\"markup--em markup--p-em\">Buy Souvenir<\/em>\u00a0\u6d41\u7a0b\u3002<\/p>\n<p id=\"2dbd\" class=\"graf graf--p graf-after--p\"><em class=\"markup--em markup--p-em\">CS Assistant<\/em>\u9084\u53ef\u4ee5\u00a0\u901a\u904e\u63d0\u4f9b\u00a0<em class=\"markup--em markup--p-em\">\u8a02\u55ae\u8a73\u7d30\u4fe1\u606f<\/em>\u00a0\u4f86\u555f\u52d5\u00a0<em class=\"markup--em markup--p-em\">\u8cfc\u8cb7\u7968<\/em>\u6d41\u7a0b\uff0c\u8a73\u7d30\u00a0\u4fe1\u606f\u5c07\u518d\u6b21\u5b58\u5132\u5728\u00a0<em class=\"markup--em markup--p-em\">\u8a02\u55ae<\/em>\u00a0\u6578\u64da\u5b58\u5132\u4e2d\u3002\u6578\u64da\u6d41\u5716\u662f\u4e00\u7a2e\u9ad8\u5ea6\u62bd\u8c61\u7684\u9ad8\u7d1a\u5716\u3002\u9019\u88e1\u7e6a\u88fd\u7684\u6578\u64da\u5b58\u5132Order\u4e26\u4e0d\u4e00\u5b9a\u610f\u5473\u8457\u771f\u5be6\u7684\u8a02\u55ae\u6578\u64da\u5eab\u6216\u6578\u64da\u5eab\u4e2d\u7684\u8a02\u55ae\u8868\u3002\u8a02\u55ae\u8a73\u7d30\u4fe1\u606f\u7684\u7269\u7406\u5b58\u5132\u65b9\u5f0f\u5c07\u5728\u7a0d\u5f8c\u5be6\u65bd\u7cfb\u7d71\u6642\u6c7a\u5b9a\u3002<\/p>\n<p id=\"0ddd\" class=\"graf graf--p graf-after--p\">\u6700\u5f8c\uff0c\u00a0\u00a0<em class=\"markup--em markup--p-em\">CS Assistant<\/em>\u53ef\u4ee5\u00a0\u901a\u904e\u63d0\u4f9b\u00a0<em class=\"markup--em markup--p-em\">\u4e8b\u4ef6\u548c\u7269\u54c1\u8a73\u7d30<\/em>\u4fe1\u606f\u00a0\u4f86\u555f\u52d5\u00a0<em class=\"markup--em markup--p-em\">\u5831\u544a\u4e1f\u5931<\/em>\u6d41\u7a0b\uff0c\u00a0\u4e26\u4e14\u4fe1\u606f\u5c07\u5b58\u5132\u5728\u00a0<em class=\"markup--em markup--p-em\">\u4e1f\u5931\u7269\u54c1<\/em>\u00a0\u6578\u64da\u5eab\u4e2d\u3002<\/p>\n<h4 id=\"2092\" class=\"graf graf--h4 graf-after--p\"><span id=\"Learn_More_DFD_by_Examples\">\u901a\u904e\u793a\u4f8b\u4e86\u89e3\u66f4\u591a DFD<\/span><\/h4>\n<figure id=\"5725\" class=\"graf graf--figure graf-after--h4\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/tw\/wp-content\/uploads\/sites\/5\/2022\/01\/0x63SSpV2vU1_VAP0.png\" data-image-id=\"0*x63SSpV2vU1_VAP0.png\" data-width=\"653\" data-height=\"469\" \/><\/figure>\n<ul class=\"postList\">\n<li id=\"6dea\" class=\"graf graf--li graf-after--figure\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/8c2c19d0-cd9d-4e04-8192-ff0a8c6bea8c.xml&amp;name=Securities%20Trading%20Platform\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/8c2c19d0-cd9d-4e04-8192-ff0a8c6bea8c.xml&amp;name=Securities%20Trading%20Platform\">\u8b49\u5238\u4ea4\u6613\u5e73\u53f0<\/a><\/li>\n<\/ul>\n<figure id=\"33d3\" class=\"graf graf--figure graf-after--li\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/tw\/wp-content\/uploads\/sites\/5\/2022\/01\/0JI71dZxCO-DRk5Ru.png\" data-image-id=\"0*JI71dZxCO-DRk5Ru.png\" data-width=\"605\" data-height=\"422\" \/><\/figure>\n<ul class=\"postList\">\n<li id=\"52ca\" class=\"graf graf--li graf-after--figure\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/2e409d26-3345-4516-acde-c36b59fa3e0b.xml&amp;name=Food%20Ordering%20System\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/2e409d26-3345-4516-acde-c36b59fa3e0b.xml&amp;name=Food%20Ordering%20System\">\u9ede\u9910\u7cfb\u7d71<\/a><\/li>\n<\/ul>\n<figure id=\"e6ea\" class=\"graf graf--figure graf-after--li\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/tw\/wp-content\/uploads\/sites\/5\/2022\/01\/0vCXwOxzj5Vl9hjDi.png\" data-image-id=\"0*vCXwOxzj5Vl9hjDi.png\" data-width=\"757\" data-height=\"529\" \/><\/figure>\n<ul class=\"postList\">\n<li id=\"618e\" class=\"graf graf--li graf-after--figure\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/6963afef-4946-42f3-9117-f089fa70cfc1.xml&amp;name=Customer%20Service%20System%20%28Railway%20Company%29\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/6963afef-4946-42f3-9117-f089fa70cfc1.xml&amp;name=Customer%20Service%20System%20%28Railway%20Company%29\">\u5ba2\u6236\u670d\u52d9\u7cfb\u7d71\uff08\u9435\u8def\u516c\u53f8\uff09<\/a><\/li>\n<\/ul>\n<figure id=\"abe3\" class=\"graf graf--figure graf-after--li\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/tw\/wp-content\/uploads\/sites\/5\/2022\/01\/0-FMnw-9ZR_ILv1wR.png\" data-image-id=\"0*-FMnw-9ZR_ILv1wR.png\" data-width=\"716\" data-height=\"560\" \/><\/figure>\n<ul class=\"postList\">\n<li id=\"27c9\" class=\"graf graf--li graf-after--figure\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/0640ff0f-f7f8-4327-a735-94b451a6fd88.xml&amp;name=Supermarket%20App\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/0640ff0f-f7f8-4327-a735-94b451a6fd88.xml&amp;name=Supermarket%20App\">\u8d85\u5e02\u61c9\u7528<\/a><\/li>\n<\/ul>\n<figure id=\"b1f8\" class=\"graf graf--figure graf-after--li\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/tw\/wp-content\/uploads\/sites\/5\/2022\/01\/0nwUfOC7mhvxrRZDn.png\" data-image-id=\"0*nwUfOC7mhvxrRZDn.png\" data-width=\"637\" data-height=\"369\" \/><\/figure>\n<ul class=\"postList\">\n<li id=\"2044\" class=\"graf graf--li graf-after--figure graf--trailing\"><a class=\"markup--anchor markup--li-anchor\" 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