{"id":9297,"date":"2022-03-01T01:34:52","date_gmt":"2022-03-01T01:34:52","guid":{"rendered":"https:\/\/www.cybermedian.com\/cn\/?p=9297"},"modified":"2026-04-20T09:11:50","modified_gmt":"2026-04-20T09:11:50","slug":"%e6%95%b0%e6%8d%ae%e6%b5%81%e7%a8%8b%e5%9b%be-%e7%bb%bc%e5%90%88%e6%95%99%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/cn\/data-flow-diagram-a-comprehensive-tutorial\/","title":{"rendered":"\u6570\u636e\u6d41\u7a0b\u56fe\u2014\u2014\u7efc\u5408\u6559\u7a0b"},"content":{"rendered":"<h3><span id=\"What_is_a_Data_Flow_Diagram\">\u4ec0\u4e48\u662f\u6570\u636e\u6d41\u7a0b\u56fe\uff1f<\/span><\/h3>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/tutorials\/data-flow-diagram-dfd.jsp\">\u6570\u636e\u6d41\u56fe<\/a>\u662f\u4fe1\u606f\u7cfb\u7edf\u4e2d\u6570\u636e\u6d41\u7684\u56fe\u5f62\u8868\u793a\u3002\u5b83\u53ef\u4ee5\u63cf\u8ff0\u4f20\u5165\u7684\u6570\u636e\u6d41\u3001\u4f20\u51fa\u7684\u6570\u636e\u6d41\u548c\u5b58\u50a8\u7684\u6570\u636e\u3002DFD \u6ca1\u6709\u63d0\u53ca\u6570\u636e\u5982\u4f55\u6d41\u7ecf\u7cfb\u7edf\u3002<\/p>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/\">DFD \u6280\u672f<\/a>\u5c06\u9ad8\u7ea7\u6570\u636e\u6d41\u56fe\u5206\u89e3\u4e3a\u4e00\u7ec4\u66f4\u8be6\u7ec6\u7684\u56fe\u8868\uff0c\u63d0\u4f9b\u6574\u4e2a\u7cfb\u7edf\u7684\u6574\u4f53\u89c6\u56fe\uff0c\u4ee5\u53ca\u66f4\u8be6\u7ec6\u7684\u5206\u89e3\u3002\u63d0\u4f9b\u6574\u4e2a\u7cfb\u7edf\u7684\u6574\u4f53\u89c6\u56fe\uff0c\u4ee5\u53ca\u66f4\u8be6\u7ec6\u7684\u5206\u89e3\uff0c\u5e76\u5728\u9002\u5f53\u7684\u60c5\u51b5\u4e0b\uff0c\u66f4\u8be6\u7ec6\u7684\u5206\u89e3\u548c\u63cf\u8ff0\u5404\u4e2a\u6d3b\u52a8\uff0c\u4ee5\u4fc3\u8fdb\u6f84\u6e05\u548c\u7406\u89e3\u3002<\/p>\n<p>\u7ed3\u679c\uff0c\u7cfb\u7edf\u7684\u8303\u56f4\u548c\u8fb9\u754c\u5728\u56fe\u4e2d\u6e05\u695a\u5730\u8868\u660e\u4e86\u3002\u4e00\u4e2a\u5b8c\u5584\u7684 DFD \u7684\u6700\u7ec8\u7ed3\u679c\u662f\u4e00\u4e2a\u201c\u5927\u56fe\u201d\uff0c\u5b83\u663e\u793a\u4e86\u6bcf\u4e2a\u7ea7\u522b\u6b63\u5728\u53d1\u751f\u7684\u4e8b\u60c5\u3002<\/p>\n<h3><span id=\"Why_DFD\">\u4e3a\u4ec0\u4e48\u9009\u62e9 DFD\uff1f<\/span><\/h3>\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Data-flow_diagram\">\u6570\u636e\u6d41\u56fe<\/a>\u63d0\u4f9b\u4e86\u7cfb\u7edf\u7684\u56fe\u5f62\u8868\u793a\uff0c\u65e8\u5728\u8ba9<br \/>\n\u8ba1\u7b97\u673a\u4e13\u5bb6\u548c\u975e\u4e13\u5bb6\u7528\u6237\u90fd\u53ef\u4ee5\u8bbf\u95ee\u3002\u5b83\u662f\u4e00\u79cd\u975e\u5e38\u5bb9\u6613\u7406\u89e3\u7684\u56fe\u5f62\u8868\u793a\uff0c\u56e0\u4e3a\u5b83\u6709\u52a9\u4e8e\u53ef\u89c6\u5316\u5185\u5bb9\u3002<\/p>\n<p>\u8fd9\u4e9b\u6a21\u578b\u4f7f\u8f6f\u4ef6\u5de5\u7a0b\u5e08\u3001\u5ba2\u6237\u548c\u7528\u6237\u80fd\u591f\u5728\u9700\u6c42\u5206\u6790\u548c\u89c4\u8303\u671f\u95f4\u6709\u6548\u5730\u5408\u4f5c\u3002<\/p>\n<p>\u867d\u7136\u8fd9\u610f\u5473\u7740\u6211\u4eec\u7684\u5ba2\u6237\u9700\u8981\u4e86\u89e3\u5efa\u6a21\u6280\u672f\u548c\u6784\u9020\uff0c\u4f46\u5728\u6570\u636e\u6d41\u5efa\u6a21\u4e2d\u53ea\u4f7f\u7528\u4e86\u6709\u9650\u7684\u6784\u9020\u96c6\uff0c\u5e76\u4e14\u5e94\u7528\u7684\u89c4\u5219\u8bbe\u8ba1\u5f97\u7b80\u5355\u6613\u61c2\u3002<\/p>\n<p>\u4ee5\u4e0b\u662fDFD\u6280\u672f\u7684\u597d\u5904\uff1a<\/p>\n<ul>\n<li>\u8fd9\u662f\u4e00\u79cd\u7b80\u5355\u6613\u61c2\u7684\u56fe\u5f62\u6280\u672f\u3002<\/li>\n<li>\u6280\u672f\u548c\u975e\u6280\u672f\u53d7\u4f17\u66f4\u5bb9\u6613\u7406\u89e3\u5b83\u3002<\/li>\n<li>\u5b83\u6709\u52a9\u4e8e\u63cf\u8ff0\u7cfb\u7edf\u7684\u8fb9\u754c\u3002<\/li>\n<li>\u5b83\u6709\u52a9\u4e8e\u5c06\u73b0\u6709\u7cfb\u7edf\u77e5\u8bc6\u4f20\u8fbe\u7ed9\u6700\u7ec8\u7528\u6237\u3002<\/li>\n<li>\u5b83\u63d0\u4f9b\u4e86\u7cfb\u7edf\u7ec4\u4ef6\u7684\u8be6\u7ec6\u8868\u793a\u3002<\/li>\n<li>\u5b83\u7528\u4f5c\u7cfb\u7edf\u6587\u6863\u7684\u4e00\u90e8\u5206\u3002<\/li>\n<\/ul>\n<h3><span id=\"DFD_vs_Flowchart\">DFD \u4e0e\u6d41\u7a0b\u56fe<\/span><\/h3>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/tutorials\/flowchart-tutorial\/\">DFD \u548c\u6d41\u7a0b\u56fe<\/a>\u4e4b\u95f4\u5b58\u5728\u663e\u7740\u5dee\u5f02\u3002\u57fa\u672c\u4e0a\uff0cDFD \u663e\u793a\u6570\u636e\u6d41\uff1b\u6d41\u7a0b\u56fe\u663e\u793a\u63a7\u5236\u6d41\u7a0b\u3002<\/p>\n<ul>\n<li>\u6d41\u7a0b\u56fe\u63cf\u8ff0\u4e86\u7a0b\u5e8f\u6a21\u5757\u4e2d\u7684\u63a7\u5236\u6d41\u7a0b\uff0c\u5e76\u6709\u52a9\u4e8e\u8bf4\u660e\u89e3\u51b3\u95ee\u9898\u7684\u6b65\u9aa4\u3002<\/li>\n<li>DFD \u8bf4\u660e\u4e86\u8f93\u5165\u3001\u8f93\u51fa\u3001\u6570\u636e\u5c06\u5982\u4f55\u6d41\u7ecf\u7cfb\u7edf\u4ee5\u53ca\u6570\u636e\u5c06\u5b58\u50a8\u5728\u4f55\u5904\u3002\u5b83\u4e0d\u5305\u542b\u4efb\u4f55\u63a7\u5236\u6216\u5206\u652f\u5143\u7d20\u3002<\/li>\n<\/ul>\n<h3><span id=\"Elements_of_DFD\">DFD \u7684\u8981\u7d20<\/span><\/h3>\n<ul>\n<li><strong>\u5b9e\u4f53<\/strong>\u2014\u2014\u5b9e\u4f53\u662f\u4fe1\u606f\u6570\u636e\u7684\u6765\u6e90\u548c\u76ee\u7684\u5730\u3002\u5b9e\u4f53\u7531<br \/>\n\u77e9\u5f62\u8868\u793a\u5e76\u6709\u81ea\u5df1\u7684\u540d\u79f0\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/01___notation_external_entity.png\" alt=\"\u8868\u793a\u6cd5\uff08\u5916\u90e8\u5b9e\u4f53\uff09\" \/><\/p>\n<ul>\n<li><strong>\u6d41\u7a0b<\/strong>\u2014\u2014\u5bf9\u6570\u636e\u6267\u884c\u7684\u6d3b\u52a8\u548c\u64cd\u4f5c\u7531\u5706\u5f62\u6216\u5706\u5f62\u77e9\u5f62\u8868\u793a\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/02___notation_process.png\" alt=\"\u7b26\u53f7\uff08\u8fc7\u7a0b\uff09\" \/><\/p>\n<ul>\n<li><strong>\u6570\u636e\u5b58\u50a8<\/strong>\u2013 \u6570\u636e\u5b58\u50a8\u6709\u4e24\u79cd\u53d8\u4f53 \u2013 \u5b83\u53ef\u4ee5\u8868\u793a\u4e3a \u2013 1. \u5b83\u53ef\u4ee5\u8868\u793a\u4e3a\u6ca1\u6709\u4e24\u6761\u5c0f\u8fb9\u7684\u77e9\u5f62\uff0c2) \u6216\u53ea\u6709\u4e00\u6761\u8fb9<br \/>\n\u7684\u5f00\u653e\u77e9\u5f62 \u7f3a\u5c11\u8fb9\u7684\u5f00\u653e\u77e9\u5f62\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/03___notation_data_store.png\" alt=\"\u8868\u793a\u6cd5\uff08\u6570\u636e\u5b58\u50a8\uff09\" \/><\/p>\n<ul>\n<li><strong>\u6570\u636e\u6d41<\/strong>\u2014\u2014\u6570\u636e\u7684\u79fb\u52a8\u7528\u5c16\u7bad\u5934\u8868\u793a\u3002\u6570\u636e\u7684\u79fb\u52a8\u663e\u793a\u4e3a\u4ece\u4f5c\u4e3a\u5176\u6e90\u7684\u7bad\u5934\u5e95\u90e8\u5230\u4f5c\u4e3a\u5176\u76ee\u7684\u5730\u7684\u7bad\u5934\u5934\u90e8\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/04___notation_data_flow.png\" alt=\"\u8868\u793a\u6cd5\uff08\u6570\u636e\u6d41\uff09\" \/><\/p>\n<h3><span id=\"Data_Flow_Example_e-Banking\">\u6570\u636e\u6d41\u793a\u4f8b \u2013 \u7535\u5b50\u94f6\u884c<\/span><\/h3>\n<p>\u94f6\u884c\u7ecf\u7406\u5411\u5f00\u7acb\u5e10\u6237\u6d41\u7a0b\u63d0\u4f9b\u65b0\u5e10\u6237\u8be6\u7ec6\u4fe1\u606f\uff0c\u8fd9\u5bfc\u81f4\u5ba2\u6237\u8be6\u7ec6\u4fe1\u606f\u4fdd\u5b58\u5728\u5ba2\u6237\u6570\u636e\u5e93\u6570\u636e\u5b58\u50a8\u4e2d\uff0c\u800c\u5e10\u6237\u8be6\u7ec6\u4fe1\u606f\u4fdd\u5b58\u5728\u5e10\u6237\u6570\u636e\u5e93\u6570\u636e\u5b58\u50a8\u4e2d\u3002\u5c3d\u7ba1\u6211\u4eec\u5728\u89e3\u91ca\u4e2d\u4f7f\u7528\u4e86\u201c\u7ed3\u679c\u201d\u4e00\u8bcd\uff0c\u4f46 DFD \u5e76\u4e0d\u610f\u5473\u7740\u56e0\u679c\u5173\u7cfb\uff1b\u5b83\u6240\u663e\u793a\u7684\u53ea\u662f\u5f00\u6237\u8fc7\u7a0b\u53ef\u4ee5\u4ece\u94f6\u884c\u7ecf\u7406\u7684\u754c\u9762\u8bfb\u53d6\u6570\u636e\uff0c\u800c\u65e0\u9700\u5c06\u6570\u636e\u4ee5\u7279\u5b9a\u987a\u5e8f\u5199\u5165\u5ba2\u6237\u6570\u636e\u5e93\u548c\u5e10\u6237\u6570\u636e\u5e93\u6570\u636e\u5b58\u50a8\u3002<\/p>\n<p>\u4f7f\u7528\u7f51\u4e0a\u94f6\u884c\u767b\u5f55\u8fc7\u7a0b\u7684\u5ba2\u6237\u5fc5\u987b\u4ee5\u4e00\u7ec4\u767b\u5f55\u51ed\u636e\u7684\u5f62\u5f0f\u63d0\u4f9b\u4e00\u4e9b\u6570\u636e\uff0c\u4f8b\u5982\u7528\u6237\u540d\u548c\u5bc6\u7801\u3002<\/p>\n<p>\u5ba2\u6237\u53ef\u80fd\u4f1a\u4ece\u63d0\u6b3e\u4e2d\u6536\u5230\u4e00\u7b14\u94b1\u6216\u5c06\u4e00\u7b14\u94b1\u5b58\u5165\u5b58\u6b3e\uff1b\u5728\u8fd9\u4e24\u79cd\u60c5\u51b5\u4e0b\uff0c\u8fd9\u90fd\u4f1a\u5bfc\u81f4\u5e10\u6237\u6570\u636e\u5e93\u6570\u636e\u5b58\u50a8\u4e2d\u7684\u5e10\u6237\u4f59\u989d\u66f4\u65b0\uff08\u5c3d\u7ba1\u8fd9\u79cd\u56e0\u679c\u5173\u7cfb\u65e0\u6cd5\u663e\u5f0f\u5efa\u6a21\uff09\u3002<\/p>\n<p>\u5ba2\u6237\u53ef\u4ee5\u542f\u52a8\u8d44\u91d1\u8f6c\u8d26\u6d41\u7a0b\uff0c\u5e76\u4e14\u5fc5\u987b\u63d0\u4f9b\u8d26\u6237\u76ee\u7684\u5730\u548c\u8d44\u91d1\u91d1\u989d\u3002\u8d44\u91d1\u8f6c\u8d26\u8fc7\u7a0b\u53ef\u4ee5\u901a\u8fc7\u53e6\u4e00\u4e2a\u94f6\u884c\u63a5\u53e3\u5c06\u8d44\u91d1\u91d1\u989d\u53d1\u9001\u5230\u53e6\u4e00\u4e2a\u94f6\u884c\u3002<img decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/03\/bank-account-data-flow-diagram.png\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/13fcf5a3-39b6-438b-9cfa-3741dc750a2d.xml&amp;name=Bank%20Account%20Data%20Flow%20Diagram\">\u7f16\u8f91\u6b64\u6570\u636e\u6d41\u56fe\u793a\u4f8b<\/a><\/p>\n<p id=\"NvzzDpk\">\u4e0a\u9762\u663e\u793a\u7684\u8fd9\u4e2a DFD \u793a\u4f8b\u5305\u62ec\u4e94\u4e2a\u8fdb\u7a0b\u3001\u56db\u4e2a\u5916\u90e8\u63a5\u53e3\/\u89d2\u8272\u548c\u4e24\u4e2a\u6570\u636e\u5b58\u50a8\u3002\u5b83\u5e76\u4e0d\u662f\u5bf9\u94f6\u884c\u7cfb\u7edf\u4e2d\u6570\u636e\u6d41\u7684\u8be6\u5c3d\u8868\u793a\uff0c\u4f46\u5b83\u8db3\u591f\u5168\u9762\uff0c\u53ef\u4ee5\u8ba9\u60a8\u4e86\u89e3\u5982\u4f55\u6784\u5efa DFD\u3002<\/p>\n<h3><span id=\"Top-Down_Decomposition_Technique_Multiple_level_DFDs\">\u81ea\u4e0a\u800c\u4e0b\u7684\u5206\u89e3\u6280\u672f\u2014\u2014\u591a\u7ea7 DFD<\/span><\/h3>\n<p>\u6570\u636e\u6d41\u5efa\u6a21\u6280\u672f\u7684\u4e00\u4e2a\u4e3b\u8981\u4f18\u70b9\u662f\uff0c\u901a\u8fc7\u4e00\u79cd\u79f0\u4e3a\u81ea\u9876\u5411\u4e0b\u5206\u89e3\uff08\u4e5f\u79f0\u4e3a\u201c\u8c03\u5e73\u201d\uff09\u7684\u6280\u672f\uff0c\u53ef\u4ee5\u5728\u62bd\u8c61\u5c42\u6b21\u7ed3\u6784\u4e2d\u7ba1\u7406\u548c\u5efa\u6a21\u73b0\u5b9e\u4e16\u754c\u7cfb\u7edf\u7684\u8be6\u7ec6\u590d\u6742\u6027\u3002\u8c03\u5e73\u662f\u901a\u8fc7\u7ed8\u5236\u4e00\u7cfb\u5217\u8d8a\u6765\u8d8a\u8be6\u7ec6\u7684 DFD \u6765\u5b8c\u6210\u7684\uff0c\u76f4\u5230\u8fbe\u5230\u6240\u9700\u7684\u8be6\u7ec6\u7a0b\u5ea6\u3002<\/p>\n<p>\u8981\u4f7f DFD \u66f4\u52a0\u590d\u6742\uff08\u5373\uff0c\u4e0d\u8981\u8fc7\u591a\u7684\u8fc7\u7a0b\uff09\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa\u591a\u7ea7 DFDS\u3002<\/p>\n<ul>\n<li>\u4e0a\u4e0b\u6587\u56fe\u5305\u542b\u63a7\u5236\uff08\u805a\u5408\uff09\u7cfb\u7edf\u8fc7\u7a0b\u3002<\/li>\n<li>\u8f83\u9ad8\u5c42\u6b21\u7684 DFD \u4e0d\u592a\u8be6\u7ec6\uff08\u66f4\u8be6\u7ec6\u7684 DFD \u5728\u8f83\u4f4e\u5c42\u6b21\u8be6\u7ec6\u9610\u8ff0\uff09\u79f0\u4e3a\u81ea\u9876\u5411\u4e0b\u5206\u89e3\u8fc7\u7a0b\u3002<\/li>\n<li>\u4e0a\u4e0b\u6587\u56fe\u4ee5\u8fdb\u7a0b\u53f7\u5f00\u59cb\uff08\u4f8b\u5982\uff0c\u8fdb\u7a0b 1\u3001\u8fdb\u7a0b 2 \u7b49\uff09\u3002<\/li>\n<li>\u7f16\u53f7\u5728\u4e0b\u4e00\u4e2a\u6240\u8c13\u7684\u7b2c\u4e00\u7ea7 (DFD) \u4e2d\u7ee7\u7eed\u3002\u4f8b\u5982\uff0c\u4e0a\u4e0b\u6587\u56fe\u4e2d\u7684\u6d41\u7a0b1\u88ab\u7ec6\u5316\u4e3a\u4e00\u7ea7DFD\u4e2d\u7684\u4e09\u4e2a\u6d41\u7a0b\uff0c\u7f16\u53f7\u5206\u522b\u4e3a1.1\u30011.2\u548c1.3\u3002<\/li>\n<li>\u7c7b\u4f3c\u5730\uff0c\u7b2c\u4e8c\u5c42\u4e2d\u7684\u8fc7\u7a0b\u88ab\u7f16\u53f7\uff0c\u4f8b\u59822.1.1\u30012.1.2\u30012.1.3\u548c2.1.4\u3002\u5c42\u6b21\u7ed3\u6784\u4e2d\u8fdb\u7a0b\u7684\u7f16\u53f7\uff1a\n<ul>\n<li>(1, 2, 3,\u2026);<\/li>\n<li>\uff081.1\u30011.2\u30011.3\u3001\u2026\u2026\u30012.1\u30012.2\u30012.3\u3001\u2026\u2026\uff09\uff1b<\/li>\n<li>\uff081.1.1\u30011.1.2\u30011.1.3\u3001\u2026\u2026\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u5c42\u6570\u53d6\u51b3\u4e8e\u6a21\u578b\u7cfb\u7edf\u7684\u5927\u5c0f\u3002<\/li>\n<\/ul>\n<p>\u5f53\u5bf9 DFD \u6267\u884c\u81ea\u4e0a\u800c\u4e0b\u7684\u5206\u89e3\u5230\u8f83\u4f4e\u7ea7\u522b\u7684 DFD \u65f6\uff0c\u8f93\u5165\u548c\u8f93\u51fa\u5fc5\u987b\u5728 DFD \u7684\u7ea7\u522b\u4e4b\u95f4\u4fdd\u6301\u4e0d\u53d8\u3002\u4f8b\u5982\uff0c\u7ea7\u522b n \u548c n+1 \u5fc5\u987b\u5177\u6709\u76f8\u540c\u7684\u8f93\u5165\u548c\u8f93\u51fa<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/17-balancing-dfd.png\" alt=\"\u5e73\u8861DFD\" \/><\/p>\n<h3><span id=\"DFD_Example_food_ordering_system\"><a href=\"https:\/\/www.visual-paradigm.com\/tw\/tutorials\/data-flow-diagram-example-food-ordering-system.jsp\">DFD \u793a\u4f8b<\/a>&#8211; \u98df\u54c1\u8ba2\u8d2d\u7cfb\u7edf<\/span><\/h3>\n<h4><span id=\"Context_Diagram_Level_0_DFD\">\u4e0a\u4e0b\u6587\u56fe\uff080 \u7ea7 &#8211; DFD\uff09<\/span><\/h4>\n<p>\u4e0a\u4e0b\u6587\u56fe\u663e\u793a\u4e86\u7cfb\u7edf\u7684\u6982\u8ff0\u4ee5\u53ca\u5b83\u5982\u4f55\u4e0e\u201c\u4e16\u754c\u201d\u7684\u5176\u4ed6\u90e8\u5206\u4ea4\u4e92\u3002\u4e0a\u4e0b\u6587\u56fe\u662f\u53ea\u663e\u793a\u9876\u5c42\u7684\u6570\u636e\u6d41\u56fe\uff0c\u79f0\u4e3a\u7b2c 0 \u5c42\u3002\u5728\u8fd9\u4e00\u5c42\uff0c\u53ea\u6709\u4e00\u4e2a\u53ef\u89c1\u7684\u6d41\u7a0b\u8282\u70b9\u8868\u793a\u5b8c\u6574\u7cfb\u7edf\u7684\u529f\u80fd\uff0c\u5373\u5b83\u5982\u4f55\u4e0e\u5916\u90e8\u5b9e\u4f53\u4ea4\u4e92\u3002\u4e0a\u4e0b\u6587\u56fe\u7684\u4e00\u4e9b\u597d\u5904\u662f\u3002<\/p>\n<ul>\n<li>\u663e\u793a\u7cfb\u7edf\u8fb9\u754c\u7684\u6982\u89c8<\/li>\n<li>\u901a\u8fc7\u5176\u7b80\u5355\u7684\u7b26\u53f7\uff0c\u5b83\u4e0d\u9700\u8981\u6280\u672f\u77e5\u8bc6\u5373\u53ef\u7406\u89e3<\/li>\n<li>\u7531\u4e8e\u7b26\u53f7\u6709\u9650\uff0c\u6613\u4e8e\u7ed8\u5236\u3001\u4fee\u6539\u548c\u8be6\u7ec6\u8bf4\u660e<\/li>\n<\/ul>\n<p>\u4e0b\u56fe\u663e\u793a\u4e86\u4e3a\u4e00\u4e2a\u98df\u54c1\u8ba2\u8d2d\u7cfb\u7edf\u7ed8\u5236\u7684\u4e0a\u4e0b\u6587\u56fe\uff08\u9876\u5c42\u6570\u636e\u6d41\u56fe\uff09\u3002<\/p>\n<ul>\n<li>\u5b83\u5305\u542b\u4e00\u4e2a\u8868\u793a\u7cfb\u7edf\u6a21\u578b\u7684\u8fc7\u7a0b\uff08\u5f62\u72b6\uff09\uff0c\u5728\u672c\u4f8b\u4e2d\u4e3a\u201c\u98df\u54c1\u8ba2\u8d2d\u7cfb\u7edf\u201d\u3002<\/li>\n<li>\u5b83\u8fd8\u663e\u793a\u4e86\u5c06\u4e0e\u7cfb\u7edf\u4ea4\u4e92\u7684\u53c2\u4e0e\u8005\uff0c\u79f0\u4e3a\u5916\u90e8\u5b9e\u4f53\u3002<\/li>\n<\/ul>\n<p>\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u4f9b\u5e94\u5546\u3001\u53a8\u623f\u3001\u7ecf\u7406\u548c\u5ba2\u6237\u662f\u4e0e\u7cfb\u7edf\u4ea4\u4e92\u7684\u5b9e\u4f53\u3002<\/p>\n<p>\u5728\u6d41\u7a0b\u548c\u5916\u90e8\u5b9e\u4f53\u4e4b\u95f4\uff0c\u5b58\u5728\u6570\u636e\u6d41\uff08\u8fde\u63a5\u5668\uff09\uff0c\u8868\u660e\u5b9e\u4f53\u548c\u7cfb\u7edf\u4e4b\u95f4\u5b58\u5728\u4fe1\u606f\u4ea4\u6362\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/food-ordering-system-context-dfd.png\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/0a02926d-965e-4443-8103-980b71d7c91f.xml&amp;name=Food%20Ordering%20System%20Context%20DFD\">\u7f16\u8f91\u6b64 DFD \u793a\u4f8b<\/a><\/p>\n<p>Context DFD \u662f\u6570\u636e\u6d41\u6a21\u578b\u7684\u5165\u53e3\u70b9\u3002\u5b83\u5305\u542b\u4e00\u4e2a\u4e14\u53ea\u6709\u4e00\u4e2a\u8fdb\u7a0b\uff0c\u5e76\u4e14\u4e0d\u663e\u793a\u4efb\u4f55\u6570\u636e\u5b58\u50a8\u3002<\/p>\n<h3><span id=\"Level_1_DFD\">1\u7ea7DFD<\/span><\/h3>\n<p>1 \u7ea7 DFD \u63d0\u4f9b\u4e86\u6bd4\u4e0a\u4e0b\u6587\u56fe\u66f4\u8be6\u7ec6\u7684\u7cfb\u7edf\u89c6\u56fe\u3002\u901a\u8fc7\u663e\u793a\u6784\u6210\u7cfb\u7edf\u7684\u4e3b\u8981\u5b50\u6d41\u7a0b\u548c\u6570\u636e\u5b58\u50a8\u3002<\/p>\n<p>\u4e0b\u56fe\u663e\u793a\u4e86 1 \u7ea7 DFD\uff0c\u5b83\u662f\u4e0a\u4e0b\u6587 DFD \u4e2d\u663e\u793a\u7684\u98df\u54c1\u8ba2\u8d2d\u7cfb\u7edf\u6d41\u7a0b\u7684\u5206\u89e3\uff08\u5373\u5206\u89e3\uff09\u3002\u901a\u8bfb\u8be5\u56fe\uff0c\u7136\u540e\u6211\u4eec\u5c06\u6839\u636e\u5b83\u4ecb\u7ecd\u4e00\u4e9b\u5173\u952e\u6982\u5ff5\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/food-ordering-system.png\" \/><\/p>\n<p><a id=\"tinymce\" class=\"edit-template-v1\" 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\">\u7f16\u8f91\u6b64\u6570\u636e\u6d41\u56fe\u793a\u4f8b<\/a><\/p>\n<p>\u98df\u54c1\u8ba2\u5355\u7cfb\u7edf\u6570\u636e\u6d41\u7a0b\u56fe\u7684\u793a\u4f8b\u5305\u542b\u4e09\u4e2a\u6d41\u7a0b\u3001\u56db\u4e2a\u5916\u90e8\u5b9e\u4f53\u548c\u4e24\u4e2a\u6570\u636e\u5b58\u50a8\u3002<\/p>\n<ol>\n<li>\u6839\u636e\u56fe\u8868\uff0c\u6211\u4eec\u77e5\u9053\u5ba2\u6237\u53ef\u4ee5\u4e0b\u8ba2\u5355\u3002\u98df\u54c1\u8ba2\u8d2d\u6d41\u7a0b\u63a5\u6536\u8ba2\u5355\uff0c\u5c06\u5176\u8f6c\u53d1\u5230\u53a8\u623f\uff0c\u5c06\u5176\u5b58\u50a8\u5728\u8ba2\u5355\u6570\u636e\u5b58\u50a8\u4e2d\uff0c\u5e76\u5c06\u66f4\u65b0\u7684\u5e93\u5b58\u8be6\u7ec6\u4fe1\u606f\u5b58\u50a8\u5728\u5e93\u5b58\u6570\u636e\u5b58\u50a8\u4e2d\u3002\u8be5\u8fc7\u7a0b\u8fd8\u5411\u5ba2\u6237\u63d0\u4f9b\u5e10\u5355\u3002<\/li>\n<li>\u7ecf\u7406\u53ef\u4ee5\u901a\u8fc7\u751f\u6210\u62a5\u544a\u6d41\u7a0b\u63a5\u6536\u62a5\u544a\uff0c\u8be5\u6d41\u7a0b\u5c06\u5e93\u5b58\u8be6\u7ec6\u4fe1\u606f\u548c\u8ba2\u5355\u5206\u522b\u4f5c\u4e3a\u5e93\u5b58\u548c\u8ba2\u5355\u6570\u636e\u5b58\u50a8\u7684\u8f93\u5165\u3002<\/li>\n<li>\u7ecf\u7406\u8fd8\u53ef\u4ee5\u901a\u8fc7\u63d0\u4f9b\u5e93\u5b58\u8ba2\u5355\u6765\u542f\u52a8\u8ba2\u5355\u5e93\u5b58\u6d41\u7a0b\u3002\u6b64\u8fc7\u7a0b\u5c06\u5e93\u5b58\u8ba2\u5355\u8f6c\u53d1\u7ed9\u4f9b\u5e94\u5546\u5e76\u5c06\u66f4\u65b0\u7684\u5e93\u5b58\u8be6\u7ec6\u4fe1\u606f\u5b58\u50a8\u5728\u5e93\u5b58\u6570\u636e\u5b58\u50a8\u4e2d\u3002<\/li>\n<\/ol>\n<h3><span id=\"Logical_vs_Physical_DFD\"><a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/logical-vs-physical-data-flow-diagrams\/\">\u903b\u8f91\u4e0e\u7269\u7406 DFD<\/a><\/span><\/h3>\n<p>\u6570\u636e\u6d41\u56fe\u5206\u4e3a\u903b\u8f91\u6570\u636e\u6d41\u56fe\u548c\u7269\u7406\u6570\u636e\u6d41\u56fe\u3002\u903b\u8f91 DFD \u4fa7\u91cd\u4e8e\u4e1a\u52a1\u53ca\u5176\u8fd0\u4f5c\u65b9\u5f0f\u3002\u5b83\u63cf\u8ff0\u4e86\u53d1\u751f\u7684\u4e1a\u52a1\u4e8b\u4ef6\u4ee5\u53ca\u6bcf\u4e2a\u4e8b\u4ef6\u6240\u9700\u548c\u751f\u6210\u7684\u6570\u636e\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u7269\u7406 DFD \u663e\u793a\u4e86\u7cfb\u7edf\u5c06\u5982\u4f55\u5b9e\u73b0\u3002\u4ee5\u4e0b\u662f\u903b\u8f91 DFD \u548c\u7269\u7406 DFD \u4e4b\u95f4\u7684\u4e3b\u8981\u533a\u522b\uff1a<\/p>\n<h3><span id=\"Logical_DFD\">\u903b\u8f91DFD<\/span><\/h3>\n<ul>\n<li>\u903b\u8f91 DFD \u63cf\u8ff0\u4e86\u4e1a\u52a1\u7684\u8fd0\u4f5c\u65b9\u5f0f\u3002<\/li>\n<li>\u6d41\u7a0b\u4ee3\u8868\u4e1a\u52a1\u6d3b\u52a8\u3002<\/li>\n<li>\u65e0\u8bba\u6570\u636e\u5982\u4f55\u5b58\u50a8\uff0c\u6570\u636e\u5b58\u50a8\u90fd\u8868\u793a\u6570\u636e\u7684\u96c6\u5408\u3002<\/li>\n<li>\u8fd9\u5c31\u662f\u4e1a\u52a1\u63a7\u5236\u7684\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n<h3><span id=\"Physical_DFD\">\u7269\u7406 DFD<\/span><\/h3>\n<ul>\n<li>\n<ul>\n<li>\u7269\u7406 DFD \u63cf\u8ff0\u4e86\u7cfb\u7edf\u5c06\u5982\u4f55\u5b9e\u73b0\uff08\u6216\u5f53\u524d\u7cfb\u7edf\u5982\u4f55\u8fd0\u884c\uff09\u3002<\/li>\n<li>\u8fc7\u7a0b\u4ee3\u8868\u7a0b\u5e8f\u3001\u7a0b\u5e8f\u6a21\u5757\u548c\u624b\u52a8\u7a0b\u5e8f\u3002<\/li>\n<li>\u6570\u636e\u5b58\u50a8\u4ee3\u8868\u7269\u7406\u6587\u4ef6\u548c\u6570\u636e\u5e93\u3001\u624b\u52a8\u6587\u4ef6\u3002<\/li>\n<li>\u5b83\u663e\u793a\u4e86\u7528\u4e8e\u9a8c\u8bc1\u8f93\u5165\u6570\u636e\u3001\u83b7\u53d6\u8bb0\u5f55\u3001\u786e\u4fdd\u6d41\u7a0b\u6210\u529f\u5b8c\u6210\u4ee5\u53ca\u7cfb\u7edf\u5b89\u5168\u7684\u63a7\u5236\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u7269\u7406 DFD \u6307\u5b9a\u7269\u7406\u6587\u6863\u7684\u5b9e\u9645\u6d41\u7a0b\uff0c\u800c\u903b\u8f91 DFD \u4ec5\u5173\u6ce8\u4e1a\u52a1\u672f\u8bed\u4e2d\u7684\u4fe1\u606f\u6d41\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0cPhysical DFD \u6307\u5b9a\u7269\u7406\u6587\u6863\u7684\u5b9e\u9645\u6d41\u7a0b\uff0c\u800c\u903b\u8f91 DFD \u4ec5\u5173\u6ce8\u4e1a\u52a1\u672f\u8bed\u4e2d\u7684\u4fe1\u606f\u6d41\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/01-dfd-example-physical-dfd-to-logical-dfd.png\" alt=\"\u7269\u7406\u548c\u903b\u8f91 DFD\uff1a\u793a\u4f8b 1\" \/><\/p>\n<p>\u6b64\u5916\uff0c\u903b\u8f91 DFD \u6d88\u9664\u4e86\u4ec5\u6d89\u53ca\u7269\u7406\u6d3b\u52a8\u800c\u4e0d\u8f6c\u6362\u6570\u636e\u7684\u7269\u7406\u8fc7\u7a0b\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/02-dfd-example-physical-to-logical-dfd.png\" alt=\"\u7269\u7406\u548c\u903b\u8f91 DFD\uff1a\u793a\u4f8b 2\" \/><\/p>\n<h3><span id=\"Logical_DFD_Example_Grocery_Store\">\u903b\u8f91 DFD \u793a\u4f8b \u2013 \u6742\u8d27\u5e97<\/span><\/h3>\n<p>\u903b\u8f91 DFD \u8bf4\u660e\u4e86\u6240\u6d89\u53ca\u7684\u8fc7\u7a0b\uff0c\u800c\u6ca1\u6709\u8be6\u7ec6\u8bf4\u660e\u6d3b\u52a8\u7684\u7269\u7406\u5b9e\u73b0\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/04-logical-dfd-example-grocery-store.png\" alt=\"\u903b\u8f91 DFD \u793a\u4f8b - \u6742\u8d27\u5e97\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/17b473be-0da9-4364-ad58-1910f57014ea.xml&amp;name=Logical%20Data%20Flow%20Diagram%20Example%3A%20Grocery%20Store\">\u7f16\u8f91\u6b64\u903b\u8f91 DFD \u793a\u4f8b<\/a><\/p>\n<h3><span id=\"Physical_DFD_Example_Grocery_Store\">\u5b9e\u4f53 DFD \u793a\u4f8b \u2013 \u6742\u8d27\u5e97<\/span><\/h3>\n<ul>\n<li>\u5b9e\u7269 DFD \u663e\u793a\u4f7f\u7528\u4e86\u6761\u5f62\u7801 &#8211; \u5927\u591a\u6570\u6742\u8d27\u5e97\u5546\u54c1\u4e0a\u7684 UPC PRICE \u4ee3\u7801<\/li>\n<li>\u6b64\u5916\uff0c\u7269\u7406 DFD \u63d0\u5230\u4e86\u624b\u52a8\u8fc7\u7a0b\uff0c\u4f8b\u5982\u626b\u63cf\uff0c\u89e3\u91ca\u8bf4\u4e34\u65f6\u6587\u4ef6\u7528\u4e8e\u4fdd\u5b58\u9879\u76ee\u7684\u5c0f\u8ba1<\/li>\n<li>\u53ef\u4ee5\u7528\u73b0\u91d1\u3001\u652f\u7968\u6216\u501f\u8bb0\u5361\u4ed8\u6b3e<\/li>\n<\/ul>\n<p>\u6700\u540e\uff0c\u5b83\u901a\u8fc7\u5b83\u7684\u540d\u5b57\u6765\u6307\u4ee3\u6536\u636e\uff0cCASH REGISTER RECEIPT<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/physical-data-flow-diagram-example-grocery-store.png\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/00c294fb-3145-4708-bc8c-e3e2c42bdf14.xml&amp;name=Physical%20Data%20Flow%20Diagram%20Example%3A%20Grocery%20Store\">\u7f16\u8f91\u6b64\u7269\u7406 DFD \u793a\u4f8b<\/a><\/p>\n<h3><span id=\"Tips_and_Notes_on_Data_Flow_Diagrams\">\u6570\u636e\u6d41\u56fe\u7684\u63d0\u793a\u548c\u6ce8\u610f\u4e8b\u9879<\/span><\/h3>\n<ul>\n<li>\u4e0d\u8981\u8ba9\u5b83\u592a\u590d\u6742\uff1b\u901a\u5e38 5-7 \u4eba\u53ef\u4ee5\u7ba1\u7406\u6d41\u7a0b<\/li>\n<li><a href=\"https:\/\/faculty.babson.edu\/dewire\/readings\/dfdmistk.htm\">\u6570\u636e\u5b58\u50a8<\/a>\u5fc5\u987b\u4e0e\u81f3\u5c11\u4e00\u4e2a\u8fdb\u7a0b\u76f8\u5173\u8054<\/li>\n<li>\u672a\u7ecf\u5904\u7406\u7684\u4e24\u4e2a\u5916\u90e8\u5b9e\u4f53\u4e4b\u95f4\u4e0d\u5e94\u5b58\u5728\u6570\u636e\u6d41<\/li>\n<li>\u6709\u8f93\u5165\u4f46\u6ca1\u6709\u8f93\u51fa\u7684\u8fc7\u7a0b\u88ab\u8ba4\u4e3a\u662f\u9ed1\u6d1e\u8fc7\u7a0b\u3002<\/li>\n<li>\u8fc7\u7a0b\u6807\u7b7e\u5e94\u8be5\u662f\u52a8\u8bcd\u77ed\u8bed\uff1b\u6570\u636e\u5b58\u50a8\u533a\u7531\u540d\u8bcd\u8868\u793a\u3002<\/li>\n<li>\u5916\u90e8\u5b9e\u4f53\u5fc5\u987b\u4e0e\u81f3\u5c11\u4e00\u4e2a\u6d41\u7a0b\u76f8\u5173\u8054<\/li>\n<li>DFD \u662f\u975e\u786e\u5b9a\u6027\u7684\u2014\u2014\u7f16\u53f7\u4e0d\u4e00\u5b9a\u8868\u793a\u987a\u5e8f\uff0c\u5728\u4e0e\u7528\u6237\u8ba8\u8bba\u65f6\u6709\u52a9\u4e8e\u8bc6\u522b\u6d41\u7a0b<\/li>\n<li>\u6570\u636e\u5b58\u50a8\u4e0d\u5e94\u8fde\u63a5\u5230\u5916\u90e8\u5b9e\u4f53\uff0c\u5426\u5219\uff0c\u8fd9\u610f\u5473\u7740\u60a8\u6b63\u5728\u8ba9\u5916\u90e8\u5b9e\u4f53\u76f4\u63a5\u8bbf\u95ee\u60a8\u7684\u6570\u636e\u6587\u4ef6<\/li>\n<\/ul>\n<p><strong>\u8d44\u6e90<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/tutorials\/data-flow-diagram-dfd.jsp\">\u4ec0\u4e48\u662f\u6570\u636e\u6d41\u56fe\uff08DFD\uff09\uff1f<\/a><\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/tutorials\/how-to-create-data-flow-diagram\/\">\u5982\u4f55\u521b\u5efa\u6570\u636e\u6d41\u56fe\uff08DFD\uff09\uff1f<\/a><\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/solution\/drawdfd\/\">\u6570\u636e\u6d41\u56fe (DFD) \u8f6f\u4ef6<\/a><\/li>\n<li><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/\">\u6570\u636e\u6d41\u56fe\u793a\u4f8b<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u4ec0\u4e48\u662f\u6570\u636e\u6d41\u7a0b\u56fe\uff1f \u6570\u636e\u6d41\u56fe\u662f\u4fe1\u606f\u7cfb\u7edf\u4e2d<\/p>\n","protected":false},"author":3,"featured_media":9300,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","footnotes":""},"categories":[69],"tags":[],"class_list":["post-9297","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-modeling"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u6570\u636e\u6d41\u7a0b\u56fe\u2014\u2014\u7efc\u5408\u6559\u7a0b - IT \u89c2\u5bdf\u8005\u968f\u7b14 - \u8d44\u8baf\u79d1\u6280\u535a\u5ba2<\/title>\n<meta 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