{"id":454,"date":"2019-10-30T17:03:04","date_gmt":"2019-10-30T09:03:04","guid":{"rendered":"http:\/\/www.mustenaka.cn\/?p=454"},"modified":"2019-10-30T17:36:39","modified_gmt":"2019-10-30T09:36:39","slug":"softwareengineeringlesson06","status":"publish","type":"post","link":"https:\/\/www.mustenaka.cn\/index.php\/2019\/10\/30\/softwareengineeringlesson06\/","title":{"rendered":"\u8f6f\u4ef6\u5de5\u7a0b\u8bfe\u5802\u7b14\u8bb006"},"content":{"rendered":"<p>\u7ed3\u6784\u5316\u5206\u6790\u65b9\u6cd5<\/p>\n<h1>\u529f\u80fd\u8bf4\u660e\uff1a<\/h1>\n<ol>\n<li><strong>\u7cbe\u786e<\/strong>\u63cf\u8ff0DFD\u4e2d\u7684\u6bcf\u4e00\u4e2a<strong>\u57fa\u672c\u52a0\u5de5<\/strong>\u7684\u52a0\u5de5\u903b\u8f91\uff08<strong>\u4e0d\u80fd\u518d\u5206\u89e3<\/strong>\u7684\u52a0\u5de5\u79f0\u4e4b\u4e3a\u57fa\u672c\u52a0\u5de5\uff0c\u6700\u540e\u4e00\u5c42\u5747\u4e3a\u57fa\u672c\u52a0\u5de5\uff09<\/li>\n<li>\u4e0eDFD\u5171\u540c\u6784\u6210\u7cfb\u7edf\u7684<strong>\u529f\u80fd\u6a21\u578b<\/strong>\uff08DFD+DD = \u903b\u8f91\u6a21\u578b ; DFD + \u529f\u80fd\u8bf4\u660e = \u529f\u80fd\u6a21\u578b\uff09<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<h3>\u7ed3\u6784\u5316\u8bed\u8a00<\/h3>\n<p>\u4ecb\u4e8e<strong>\u81ea\u7136\u8bed\u8a00<\/strong>\uff08\u4e2d\u6587\uff09\u4e0e<strong>\u5f62\u5f0f\u5316\u8bed\u8a00<\/strong>\uff08\u7c7b\u4f3c\u4e8e\u4ee3\u7801\u8bed\u8a00\uff09\u4e4b\u95f4\u7684\u4e00\u79cd\u534a\u5f62\u5f0f\u5316\u7684\u8bed\u8a00\uff1a<\/p>\n<ul>\n<li><strong>\u5916\u5c42<\/strong>\u4f7f\u7528\u5f62\u5f0f\u5316\u8bed\u8a00\u6765\u63cf\u8ff0\u63a7\u5236\u7ed3\u6784\uff08\u987a\u5e8f\uff0c\u9009\u62e9\uff0c\u5faa\u73af\uff09<\/li>\n<li><strong>\u5185\u5c42<\/strong>\u91c7\u7528\u7948\u4f7f\u53e5\u7684\u81ea\u7136\u8bed\u8a00\u77ed\u8bed<\/li>\n<\/ul>\n<p>\u7279\u70b9\uff1a<\/p>\n<ul>\n<li>\u6ca1\u6709\u4e25\u683c\u7684\u8bed\u6cd5<\/li>\n<li>\u5916\u5c42\u7cbe\u786e\u4f46\u4e0d\u6613\u88ab\u7406\u89e3<\/li>\n<li>\u5185\u5c42\u6613\u7406\u89e3\u4f46\u4e0d\u7cbe\u786e<\/li>\n<li>\u5141\u8bb8\u4f7f\u7528\u5d4c\u5957\u7ed3\u6784<\/li>\n<li>\u6240\u6709\u540d\u5b57\u5fc5\u987b\u662f\u6570\u636e\u5b57\u5178\u4e2d<strong>\u6709\u5b9a\u4e49\u7684\u540d\u5b57<\/strong><\/li>\n<li><strong>\u4e0d\u9002\u7528<\/strong>\u5f62\u5bb9\u8bcd\uff0c\u526f\u8bcd\u7b49\u4fee\u9970\u8bcd<\/li>\n<li>\u53ef\u4ee5\u4f7f\u7528\u5e38\u7528\u7684\u7b97\u6570\u548c\u5173\u7cfb\u8fd0\u7b97\u7b26\uff08&gt;,&lt;,||,&amp;&amp;,~\uff09<\/li>\n<\/ul>\n<p>\u4f8b\u5b50(\u4f2a\u4ee3\u7801)\uff1a<\/p>\n<pre class=\"pure-highlightjs\"><code class=\"\" null=\"\">IF(\u5b66\u53f7!=NULL){\r\n    \u5728\u6210\u7ee9\u8868\u4e2d\u67e5\u627e\u7b26\u5408\u6761\u4ef6\u7684\u6210\u7ee9\u8bb0\u5f55\r\n    \u7531\u8fd9\u4e9b\u6210\u7ee9\u8bb0\u5f55\u751f\u6210\u4e2a\u4eba\u6210\u7ee9\u5355\r\n}<\/code><\/pre>\n<h4>\u4f8b\u9898\uff0c\u786e\u5b9a\u4fdd\u9669\u7c7b\u522b\uff1a<\/h4>\n<p>\u67d0\u6570\u636e\u6d41\u56fe\u4e2d\u6709\u4e00\u4e2a\u201c\u786e\u5b9a\u4fdd\u9669\u7c7b\u522b\u201d\u7684\u52a0\u5de5\uff0c\u5176\u52a0\u5de5\u903b\u8f91\u63cf\u8ff0\u4e3a\uff1a<\/p>\n<ul>\n<li>\u5982\u679c\u7533\u8bf7\u8005\u7684<strong>\u5e74\u9f84<\/strong>\u572821\u5c81\u4ee5\u4e0b\uff0c\u9700\u8981\u989d\u5916\u6536\u8d39<\/li>\n<li>\u5982\u679c\u7533\u8bf7\u8005\u662f21\u5c81\u4ee5\u4e0a26\u5c81\u4ee5\u4e0b\u7684<strong>\u5973\u6027<\/strong>\uff0c\u9002\u5408\u4e8eA\u7c7b\u4fdd\u9669<\/li>\n<li>\u5982\u679c\u662f26\u5c81\u4ee5\u4e0b\u7684<strong>\u5df2\u5a5a\u7537\u6027<\/strong>\uff0c\u621626\u5c81\u4ee5\u4e0a\u7684<strong>\u7537\u6027<\/strong>\uff0c\u9002\u7528\u4e8eB\u7c7b\u4fdd\u9669<\/li>\n<li>\u5982\u679c\u662f21\u5c81\u4ee5\u4e0b\u7684\u5973\u6027\u548c26\u5c81\u4ee5\u4e0b\u7684<strong>\u5355\u8eab\u7537\u6027<\/strong>\uff0c\u9002\u5408\u4e8eC\u7c7b\u4fdd\u9669<\/li>\n<\/ul>\n<p>\u601d\u8def\uff1a\u627e\u6761\u4ef6\uff0c\u672c\u9898\u4e2d\u6309\u7167\u5e74\u9f84\u8fdb\u884c\u5206\u7c7b\uff0c\u540c\u65f6\u8fd8\u6709\u6027\u522b\u548c\u5a5a\u59fb\u72b6\u51b5\uff08\u9488\u5bf9\u7537\u6027\u7684\u5a5a\u59fb\u72b6\u51b5\uff09\uff0c\u518d\u8fdb\u884c\u63cf\u8ff0\u3002<\/p>\n<pre class=\"pure-highlightjs\"><code class=\"\" null=\"\">IF\uff08\u7533\u8bf7\u8005.\u5e74\u9f84 &lt;= 21\uff09{\r\n    \u9002\u7528 \u201c\u989d\u5916\u6536\u8d39\u201d\r\n}\r\nIF\uff08\u7533\u8bf7\u8005.\u6027\u522b == \u201c\u5973\u6027\u201d\uff09{\r\n    IF(\u7533\u8bf7\u8005.\u5e74\u9f84 &lt;= 21){\r\n        \u9002\u7528 \u201cC\u7c7b\u4fdd\u9669\u201d\r\n    }ELSE{\r\n        \u9002\u7528 \u201cA\u7c7b\u4fdd\u9669\u201d\r\n    }\r\n}ELSE{\r\n    IF\uff08\u7533\u8bf7\u8005.\u5e74\u9f84 &lt;= 26 &amp;&amp; \u7533\u8bf7\u8005.\u5a5a\u59fb\u72b6\u6001 == \"\u5df2\u5a5a\" || \u7533\u8bf7\u8005.\u5e74\u9f84 &gt; 26\uff09{\r\n        \u9002\u7528\u201cB\u7c7b\u4fdd\u9669\u201d\r\n    }ELSE{\r\n        \u9002\u7528\u201cC\u7c7b\u4fdd\u9669\u201d\r\n    }\r\n}<\/code><\/pre>\n<h3>\u5224\u5b9a\u8868<\/h3>\n<p>\u63cf\u8ff0\u590d\u6742\u7684\u6761\u4ef6\u7ec4\u5408\u4e0e\u5e94\u4f5c\u7684\u52a8\u4f5c\u4e4b\u95f4\u7684\u5bf9\u5e94\u5173\u7cfb\uff0c\u4e2a\u4eba\u4eba\u7c7b\u7c7b\u4f3c\u4e8e\u6570\u5b57\u7535\u8def\u90a3\u6837\u7684\u201c\u771f\u503c\u8868\u201d\u90a3\u6837\u7684\u63cf\u8ff0\u65b9\u6cd5\u3002<\/p>\n<div class=\"supsystic-table-loader spinner\"style=\"background-color:#000000\"><\/div><div id=\"supsystic-table-6_99319\" class=\"supsystic-tables-wrap \" style=\" width:100%; visibility: hidden; \" data-table-width-fixed=\"100%\" data-table-width-mobile=\"100%\" ><table id=\"supsystic-table-6\" class=\"supsystic-table border lightboxImg cell-border\" data-id=\"6\" data-view-id=\"6_99319\" data-title=\"\u5224\u5b9a\u8868\u4ecb\u7ecd\" data-currency-format=\"$1,000.00\" data-percent-format=\"10.00%\" data-date-format=\"DD.MM.YYYY\" data-time-format=\"HH:mm\" data-features=\"[&quot;after_table_loaded_script&quot;]\" data-search-value=\"\" data-lightbox-img=\"\" data-head-rows-count=\"1\" data-pagination-length=\"50,100,All\" data-auto-index=\"off\" data-searching-settings=\"{&quot;columnSearchPosition&quot;:&quot;bottom&quot;,&quot;minChars&quot;:&quot;0&quot;}\" data-lang=\"default\" data-override=\"{&quot;emptyTable&quot;:&quot;&quot;,&quot;info&quot;:&quot;&quot;,&quot;infoEmpty&quot;:&quot;&quot;,&quot;infoFiltered&quot;:&quot;&quot;,&quot;lengthMenu&quot;:&quot;&quot;,&quot;search&quot;:&quot;&quot;,&quot;zeroRecords&quot;:&quot;&quot;,&quot;exportLabel&quot;:&quot;&quot;,&quot;file&quot;:&quot;default&quot;}\" data-merged=\"[]\" data-responsive-mode=\"0\" data-from-history=\"0\" ><thead><tr><th class=\"\" style=\"width:; padding: 0 !important;\"><\/th><th class=\"\" style=\"width:; padding: 0 !important;\"><\/th><\/tr><\/thead><tbody><tr style=\"height:px\" ><td data-cell-id=\"A1\" data-x=\"0\" data-y=\"1\" data-db-index=\"1\" class=\"\" data-cell-type=\"text\" data-original-value=\"\u6761\u4ef6\" data-order=\"\u6761\u4ef6\" style=\"min-width:32.9218%; \" >\u6761\u4ef6 <\/td><td data-cell-id=\"B1\" data-x=\"1\" data-y=\"1\" data-db-index=\"1\" class=\"\" data-cell-type=\"text\" data-original-value=\"\u5217\u51fa\u6240\u6709\u6761\u4ef6\u53d6\u503c\u7ec4\u5408\" data-order=\"\u5217\u51fa\u6240\u6709\u6761\u4ef6\u53d6\u503c\u7ec4\u5408\" style=\"min-width:67.0782%; \" >\u5217\u51fa\u6240\u6709\u6761\u4ef6\u53d6\u503c\u7ec4\u5408 <\/td><\/tr><tr style=\"height:px\" ><td data-cell-id=\"A2\" data-x=\"0\" data-y=\"2\" data-db-index=\"2\" class=\"\" data-cell-type=\"text\" data-original-value=\"\u52a8\u4f5c\" data-order=\"\u52a8\u4f5c\" >\u52a8\u4f5c <\/td><td data-cell-id=\"B2\" data-x=\"1\" data-y=\"2\" data-db-index=\"2\" class=\"\" data-cell-type=\"text\" data-original-value=\"\u5217\u51fa\u64cd\u4f5c\u662f\u5426\u6267\u884c\uff08\u4e0e\u6761\u4ef6\u7ec4\u5408\u76f8\u5bf9\u5e94\u7684\u52a8\u4f5c\uff09\" data-order=\"\u5217\u51fa\u64cd\u4f5c\u662f\u5426\u6267\u884c\uff08\u4e0e\u6761\u4ef6\u7ec4\u5408\u76f8\u5bf9\u5e94\u7684\u52a8\u4f5c\uff09\" >\u5217\u51fa\u64cd\u4f5c\u662f\u5426\u6267\u884c\uff08\u4e0e\u6761\u4ef6\u7ec4\u5408\u76f8\u5bf9\u5e94\u7684\u52a8\u4f5c\uff09 <\/td><\/tr><\/tbody><\/table><!-- \/#supsystic-table-6.supsystic-table --><\/div><!-- \/.supsystic-tables-wrap --><!-- Tables Generator by Supsystic --><!-- Version:1.11.1 --><!-- http:\/\/supsystic.com\/ --><a title=\"Table Plugin\" style=\"display:none;\" href=\"https:\/\/supsystic.com\/plugins\/wordpress-data-table-plugin\/?utm_medium=love_link\" target=\"_blank\">Table Plugin<\/a>\n<p>\u5982\u4e0a\u9898(\u4f8b\u9898)\uff1a<\/p>\n<p>\u6761\u4ef6\uff1a<\/p>\n<ul>\n<li>\u5e74\u9f84\uff1a&lt;=21\uff0c21~26\uff0c&gt;26<\/li>\n<li>\u6027\u522b\uff1a\u7537\uff0c\u5973<\/li>\n<li>\u5a5a\u59fb\u72b6\u6001\uff1a\u5df2\u5a5a\uff0c\u5355\u8eab<\/li>\n<\/ul>\n<p>\u52a8\u4f5c<\/p>\n<ul>\n<li>A\u7c7b\u4fdd\u9669<\/li>\n<li>B\u7c7b\u4fdd\u9669<\/li>\n<li>C\u7c7b\u4fdd\u9669<\/li>\n<li>\u989d\u5916\u6536\u8d39<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h3>\u5224\u5b9a\u6811<\/h3>\n<p>\u672c\u8d28\u4e0a\u4e0e\u5224\u5b9a\u8868\u662f\u76f8\u540c\u7684\uff0c\u53ea\u662f\u8868\u793a\u5f62\u5f0f\u4e0d\u540c\u3002\u4e2a\u4eba\u8ba4\u4e3a\u7c7b\u4f3c\u4e8e\u601d\u7ef4\u5bfc\u56fe\uff08\u6811\u72b6\u7ed3\u6784\uff09<\/p>\n<p>\u56fe\uff1a\uff08\u88ab\u6211\u5403\u4e86\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7ed3\u6784\u5316\u5206\u6790\u65b9\u6cd5 \u529f\u80fd\u8bf4\u660e\uff1a \u7cbe\u786e\u63cf\u8ff0DFD\u4e2d\u7684\u6bcf\u4e00\u4e2a\u57fa\u672c\u52a0\u5de5\u7684\u52a0\u5de5\u903b\u8f91\uff08\u4e0d\u80fd\u518d\u5206\u89e3\u7684\u52a0\u5de5\u79f0\u4e4b\u4e3a\u57fa\u672c\u52a0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[53],"tags":[55],"class_list":["post-454","post","type-post","status-publish","format-standard","hentry","category-softwareengineering","tag-se"],"views":1178,"_links":{"self":[{"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/posts\/454","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/comments?post=454"}],"version-history":[{"count":6,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/posts\/454\/revisions"}],"predecessor-version":[{"id":460,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/posts\/454\/revisions\/460"}],"wp:attachment":[{"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/media?parent=454"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/categories?post=454"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mustenaka.cn\/index.php\/wp-json\/wp\/v2\/tags?post=454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}