{"id":3548,"date":"2022-02-10T13:11:03","date_gmt":"2022-02-10T05:11:03","guid":{"rendered":"https:\/\/blog.visual-paradigm.com\/vn\/?p=3548"},"modified":"2022-06-15T16:28:04","modified_gmt":"2022-06-15T08:28:04","slug":"use-case-diagram-a-notation-guide","status":"publish","type":"post","link":"https:\/\/blog.visual-paradigm.com\/vn\/use-case-diagram-a-notation-guide\/","title":{"rendered":"S\u01a1 \u0110\u1ed3 Ca S\u1eed D\u1ee5ng &#8211; H\u01b0\u1edbng D\u1eabn K\u00fd Hi\u1ec7u"},"content":{"rendered":"<div class=\"entry-content\">\n<p><span>Bi\u1ec3u \u0111\u1ed3 ca s\u1eed d\u1ee5ng l\u00e0 bi\u1ec3u \u0111\u1ed3 Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh th\u1ed1ng nh\u1ea5t (UML) \u0111\u1ec3 k\u00edch th\u00edch c\u00e1c y\u00eau c\u1ea7u.\u00a0Bi\u1ec3u \u0111\u1ed3 ca s\u1eed d\u1ee5ng cung c\u1ea5p m\u1ed9t c\u00e1i nh\u00ecn t\u1ed5ng quan b\u1eb1ng \u0111\u1ed3 h\u1ecda v\u1ec1 c\u00e1c m\u1ee5c ti\u00eau (\u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh h\u00f3a b\u1edfi ca s\u1eed d\u1ee5ng) m\u00e0 ng\u01b0\u1eddi d\u00f9ng (\u0111\u01b0\u1ee3c \u0111\u1ea1i di\u1ec7n b\u1edfi c\u00e1c t\u00e1c nh\u00e2n) mu\u1ed1n \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng.\u00a0C\u00e1c ca s\u1eed d\u1ee5ng trong s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c v\u00e0 s\u1eafp x\u1ebfp theo m\u1ee9c \u0111\u1ed9 li\u00ean quan, m\u1ee9c \u0111\u1ed9 tr\u1eebu t\u01b0\u1ee3ng v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a ch\u00fang \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng.\u00a0Ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c li\u00ean k\u1ebft \u0111\u1ec3 hi\u1ec3n th\u1ecb c\u00e1c m\u1ed1i quan h\u1ec7 ph\u1ee5 thu\u1ed9c, bao g\u1ed3m, m\u1edf r\u1ed9ng, th\u1ebf h\u1ec7.<\/span><\/p>\n<p><span>M\u1ed9t ca s\u1eed d\u1ee5ng m\u00f4 t\u1ea3 m\u1ee5c ti\u00eau kinh doanh c\u1ee5 th\u1ec3 m\u00e0 h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng nh\u1eb1m \u0111\u00e1p \u1ee9ng.\u00a0V\u1ec1 m\u1eb7t \u0111\u1ed3 h\u1ecda, n\u00f3 l\u00e0 m\u1ed9t h\u00ecnh b\u1ea7u d\u1ee5c v\u1edbi c\u00e1i t\u00ean c\u00f3 v\u1ebb \u0111\u01a1n gi\u1ea3n, nh\u01b0ng l\u1ea1i l\u00e0 c\u00f4ng c\u1ee5 ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 qu\u1ea3n l\u00fd c\u00e1c m\u1ee5c ti\u00eau kinh doanh ho\u1eb7c m\u1ee5c ti\u00eau d\u1ef1 \u00e1n.<\/span><\/p>\n<h3><span id=\"Use_Case_Diagram_Notation_Summary\"><span>T\u00f3m t\u1eaft k\u00fd hi\u1ec7u s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng<\/span><\/span><\/h3>\n<table>\n<tbody>\n<tr>\n<td colspan=\"2\"><strong><span>M\u00f4 t\u1ea3 k\u00fd hi\u1ec7u<\/span><\/strong><\/td>\n<td><strong><span>\u0110\u1ea1i di\u1ec7n tr\u1ef1c quan<\/span><\/strong><\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\"><strong><span>Di\u1ec5n vi\u00ean nam<\/span><\/strong><\/p>\n<ul>\n<li><span>Ai \u0111\u00f3 t\u01b0\u01a1ng t\u00e1c v\u1edbi ca s\u1eed d\u1ee5ng (ch\u1ee9c n\u0103ng h\u1ec7 th\u1ed1ng).<\/span><\/li>\n<li><span>\u0110\u01b0\u1ee3c \u0111\u1eb7t t\u00ean b\u1edfi m\u1ed9t danh t\u1eeb.<\/span><\/li>\n<li><span>Di\u1ec5n vi\u00ean \u0111\u00f3ng m\u1ed9t vai tr\u00f2 trong doanh nghi\u1ec7p<\/span><\/li>\n<li><span>T\u01b0\u01a1ng t\u1ef1 nh\u01b0 kh\u00e1i ni\u1ec7m ng\u01b0\u1eddi d\u00f9ng, nh\u01b0ng ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u0111\u00f3ng c\u00e1c vai tr\u00f2 kh\u00e1c nhau<\/span><\/li>\n<li><span>V\u00ed d\u1ee5:<\/span>\n<ul>\n<li><span>M\u1ed9t h\u1ed3 s\u01a1\u00a0c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t ng\u01b0\u1eddi h\u01b0\u1edbng d\u1eabn v\u00e0 c\u0169ng c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t nh\u00e0 nghi\u00ean c\u1ee9u<\/span><\/li>\n<li><span>\u0111\u00f3ng 2 vai tr\u00f2 v\u1edbi hai h\u1ec7 th\u1ed1ng<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span>T\u00e1c nh\u00e2n k\u00edch ho\u1ea1t (c\u00e1c) tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/span><\/li>\n<li><span>T\u00e1c nh\u00e2n c\u00f3 tr\u00e1ch nhi\u1ec7m \u0111\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng (\u0111\u1ea7u v\u00e0o) v\u00e0 T\u00e1c nh\u00e2n c\u00f3 c\u00e1c k\u1ef3 v\u1ecdng t\u1eeb h\u1ec7 th\u1ed1ng (\u0111\u1ea7u ra).<\/span><\/li>\n<\/ul>\n<\/td>\n<td>\u200b<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4373\" src=\"https:\/\/blog.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/13\/2022\/02\/use-case-diagram-notation-actor.png\" alt=\"K\u00fd hi\u1ec7u s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: Actor\" width=\"31\" height=\"73\" \/><\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\"><strong><span>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/span><\/strong><\/p>\n<ul>\n<li><span>Ch\u1ee9c n\u0103ng h\u1ec7 th\u1ed1ng (quy tr\u00ecnh &#8211; t\u1ef1 \u0111\u1ed9ng ho\u1eb7c th\u1ee7 c\u00f4ng)<\/span><\/li>\n<li><span>\u0110\u01b0\u1ee3c \u0111\u1eb7t t\u00ean theo \u0111\u1ed9ng t\u1eeb + Danh t\u1eeb (ho\u1eb7c C\u1ee5m danh t\u1eeb).<\/span><\/li>\n<li><span>t\u1ee9c l\u00e0 l\u00e0m m\u1ed9t c\u00e1i g\u00ec \u0111\u00f3<\/span><\/li>\n<li><span>M\u1ed7i Actor ph\u1ea3i \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi m\u1ed9t ca s\u1eed d\u1ee5ng, trong khi m\u1ed9t s\u1ed1 ca s\u1eed d\u1ee5ng c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi c\u00e1c t\u00e1c nh\u00e2n.<\/span><\/li>\n<\/ul>\n<\/td>\n<td>\u200b<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4379\" src=\"https:\/\/blog.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/13\/2022\/02\/use-case-diagram-notation-use-case.png\" alt=\"K\u00fd hi\u1ec7u S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: Ca s\u1eed d\u1ee5ng\" width=\"81\" height=\"41\" \/><\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\"><strong><span>Li\u00ean k\u1ebft Hi\u1ec7p h\u1ed9i<\/span><\/strong><\/p>\n<ul>\n<li><span>S\u1ef1 tham gia c\u1ee7a m\u1ed9t t\u00e1c nh\u00e2n trong m\u1ed9t ca s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n b\u1eb1ng c\u00e1ch k\u1ebft n\u1ed1i m\u1ed9t t\u00e1c nh\u00e2n v\u1edbi m\u1ed9t ca s\u1eed d\u1ee5ng b\u1eb1ng m\u1ed9t li\u00ean k\u1ebft v\u1eefng ch\u1eafc.<\/span><\/li>\n<li><span>C\u00e1c t\u00e1c nh\u00e2n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi c\u00e1c ca s\u1eed d\u1ee5ng b\u1eb1ng c\u00e1c hi\u1ec7p h\u1ed9i, cho bi\u1ebft r\u1eb1ng t\u00e1c nh\u00e2n v\u00e0 ca s\u1eed d\u1ee5ng giao ti\u1ebfp v\u1edbi nhau b\u1eb1ng c\u00e1c th\u00f4ng \u0111i\u1ec7p.<\/span><\/li>\n<\/ul>\n<\/td>\n<td>\u200b<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4374\" src=\"https:\/\/blog.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/13\/2022\/02\/use-case-diagram-notation-association-link.png\" alt=\"K\u00fd hi\u1ec7u S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: Hi\u1ec7p h\u1ed9i\" width=\"145\" height=\"1\" \/><\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\"><strong><span>Ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng<\/span><\/strong><\/p>\n<ul>\n<li><span>Ranh gi\u1edbi h\u1ec7 th\u1ed1ng c\u00f3 kh\u1ea3 n\u0103ng l\u00e0 to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng nh\u01b0 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong t\u00e0i li\u1ec7u y\u00eau c\u1ea7u.<\/span><\/li>\n<li><span>\u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng l\u1edbn v\u00e0 ph\u1ee9c t\u1ea1p, m\u1ed7i m\u00f4-\u0111un c\u00f3 th\u1ec3 l\u00e0 ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/span><\/li>\n<li><span>V\u00ed d\u1ee5, \u0111\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng ERP cho m\u1ed9t t\u1ed5 ch\u1ee9c, m\u1ed7i ph\u00e2n h\u1ec7 nh\u01b0 nh\u00e2n s\u1ef1, t\u00ednh l\u01b0\u01a1ng, k\u1ebf to\u00e1n, v.v.<\/span><\/li>\n<li><span>c\u00f3 th\u1ec3 t\u1ea1o th\u00e0nh m\u1ed9t ranh gi\u1edbi h\u1ec7 th\u1ed1ng cho c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3 cho t\u1eebng ch\u1ee9c n\u0103ng nghi\u1ec7p v\u1ee5 n\u00e0y.<\/span><\/li>\n<li><span>To\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 tr\u1ea3i d\u00e0i t\u1ea5t c\u1ea3 c\u00e1c m\u00f4-\u0111un n\u00e0y m\u00f4 t\u1ea3 ranh gi\u1edbi t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng<\/span><\/li>\n<\/ul>\n<\/td>\n<td>\u200b<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4378\" src=\"https:\/\/blog.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/13\/2022\/02\/use-case-diagram-notation-system.png\" alt=\"K\u00fd hi\u1ec7u S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: H\u1ec7 th\u1ed1ng\" width=\"200\" height=\"280\" \/><\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\"><strong><span>M\u1edf r\u1ed9ng<\/span><\/strong><\/p>\n<ul>\n<li><span>Cho bi\u1ebft r\u1eb1ng\u00a0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng\u00a0<\/span><strong><span>\u201cM\u1eadt kh\u1ea9u kh\u00f4ng h\u1ee3p l\u1ec7\u201d<\/span><\/strong><span>\u00a0\u00a0c\u00f3 th\u1ec3 bao g\u1ed3m (t\u00f9y thu\u1ed9c v\u00e0o ch\u1ec9 \u0111\u1ecbnh trong ti\u1ec7n \u00edch m\u1edf r\u1ed9ng) h\u00e0nh vi \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh b\u1edfi tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 s\u1edf\u00a0\u00a0<\/span><strong><span>\u201cT\u00e0i kho\u1ea3n \u0111\u0103ng nh\u1eadp\u201d<\/span><\/strong><span>\u00a0.<\/span><\/li>\n<li><span>M\u00f4 t\u1ea3 b\u1eb1ng m\u1ed9t m\u0169i t\u00ean c\u00f3 h\u01b0\u1edbng c\u00f3 \u0111\u01b0\u1eddng ch\u1ea5m.\u00a0\u0110\u1ea7u c\u1ee7a \u0111\u1ea7u m\u0169i t\u00ean tr\u1ecf \u0111\u1ebfn tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 s\u1edf v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng con \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i \u1edf ph\u1ea7n g\u1ed1c c\u1ee7a m\u0169i t\u00ean.<\/span><\/li>\n<li><span>Khu\u00f4n m\u1eabu \u201c&lt;&lt;extends&gt;&gt;\u201d x\u00e1c \u0111\u1ecbnh l\u00e0 m\u1ed9t m\u1ed1i quan h\u1ec7 m\u1edf r\u1ed9ng<\/span><\/li>\n<\/ul>\n<\/td>\n<td>\u200b<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-4375\" src=\"https:\/\/blog.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/13\/2022\/02\/use-case-diagram-notation-extend-300x43.png\" alt=\"K\u00fd hi\u1ec7u S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: M\u1edf r\u1ed9ng\" width=\"300\" height=\"43\" \/><\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\"><strong><span>Bao g\u1ed3m<\/span><\/strong><\/p>\n<ul>\n<li><span>Khi m\u1ed9t ca s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 l\u00e0 s\u1eed d\u1ee5ng ch\u1ee9c n\u0103ng c\u1ee7a ca s\u1eed d\u1ee5ng kh\u00e1c, m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c ca s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean l\u00e0 quan h\u1ec7 bao g\u1ed3m ho\u1eb7c s\u1eed d\u1ee5ng.<\/span><\/li>\n<li><span>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng bao g\u1ed3m ch\u1ee9c n\u0103ng \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 trong tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00e1c nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a quy tr\u00ecnh kinh doanh c\u1ee7a n\u00f3.<\/span><\/li>\n<li><span>M\u1ed1i quan h\u1ec7 using t\u1eeb ca s\u1eed d\u1ee5ng c\u01a1 s\u1edf \u0111\u1ebfn ca s\u1eed d\u1ee5ng con ch\u1ec9 ra r\u1eb1ng m\u1ed9t th\u1ec3 hi\u1ec7n c\u1ee7a ca s\u1eed d\u1ee5ng c\u01a1 s\u1edf s\u1ebd bao g\u1ed3m h\u00e0nh vi nh\u01b0 \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong ca s\u1eed d\u1ee5ng con.<\/span><\/li>\n<li><span>M\u1ed1i quan h\u1ec7 bao g\u1ed3m \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 b\u1eb1ng m\u1ed9t m\u0169i t\u00ean c\u00f3 \u0111\u01b0\u1eddng ch\u1ea5m ch\u1ea5m.\u00a0\u0110\u1ea7u c\u1ee7a \u0111\u1ea7u m\u0169i t\u00ean tr\u1ecf \u0111\u1ebfn tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng con v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng m\u1eb9 \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i \u1edf ph\u1ea7n g\u1ed1c c\u1ee7a m\u0169i t\u00ean.<\/span><\/li>\n<li><span>Khu\u00f4n m\u1eabu \u201c&lt;&lt;include&gt;&gt;\u201d x\u00e1c \u0111\u1ecbnh m\u1ed1i quan h\u1ec7 l\u00e0 m\u1ed1i quan h\u1ec7 bao g\u1ed3m.<\/span><\/li>\n<\/ul>\n<\/td>\n<td>\u200b<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-4377\" src=\"https:\/\/blog.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/13\/2022\/02\/use-case-diagram-notation-include-300x37.png\" alt=\"K\u00fd hi\u1ec7u S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: Bao g\u1ed3m\" width=\"300\" height=\"37\" \/><\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\"><strong><span>S\u1ef1 kh\u00e1i qu\u00e1t<\/span><\/strong><\/p>\n<ul>\n<li><span>M\u1ed1i quan h\u1ec7 t\u1ed5ng qu\u00e1t h\u00f3a l\u00e0 m\u1ed1i quan h\u1ec7 cha-con gi\u1eefa c\u00e1c ca s\u1eed d\u1ee5ng.<\/span><\/li>\n<li><span>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng con l\u00e0 m\u1ed9t s\u1ef1 n\u00e2ng cao c\u1ee7a tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng cha m\u1eb9.<\/span><\/li>\n<li><span>T\u1ed5ng qu\u00e1t h\u00f3a \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng m\u1ed9t m\u0169i t\u00ean c\u00f3 h\u01b0\u1edbng v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean h\u00ecnh tam gi\u00e1c.<\/span><\/li>\n<li><span>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng con \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i \u1edf d\u01b0\u1edbi c\u00f9ng c\u1ee7a m\u0169i t\u00ean.\u00a0\u0110\u1ea7u c\u1ee7a m\u0169i t\u00ean \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ch\u00ednh.<\/span><\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span id=\"Use_Case_Diagram_Vehicle_Sales_Systems\"><span>S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng &#8211; H\u1ec7 th\u1ed1ng b\u00e1n xe<\/span><\/span><\/h2>\n<p><span>H\u00ecnh d\u01b0\u1edbi \u0111\u00e2y cho th\u1ea5y m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng cho m\u1ed9t h\u1ec7 th\u1ed1ng xe.\u00a0Nh\u01b0 b\u1ea1n c\u00f3 th\u1ec3 th\u1ea5y, ngay c\u1ea3 m\u1ed9t h\u1ec7 th\u1ed1ng l\u1edbn nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng b\u00e1n xe c\u0169ng ch\u1ee9a kh\u00f4ng qu\u00e1 10 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng!\u00a0\u0110\u00f3 l\u00e0 v\u1ebb \u0111\u1eb9p c\u1ee7a m\u00f4 h\u00ecnh ca s\u1eed d\u1ee5ng.<\/span><\/p>\n<p><span>M\u00f4 h\u00ecnh ca s\u1eed d\u1ee5ng c\u0169ng cho th\u1ea5y vi\u1ec7c s\u1eed d\u1ee5ng m\u1edf r\u1ed9ng v\u00e0 bao g\u1ed3m.\u00a0B\u00ean c\u1ea1nh \u0111\u00f3, c\u00f3 nh\u1eefng hi\u1ec7p h\u1ed9i k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c t\u00e1c nh\u00e2n v\u00e0 c\u00e1c ca s\u1eed d\u1ee5ng.<\/span><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blog.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/13\/2022\/02\/13-use-case-diagram-example-vehicle-sales-systems.png\" alt=\"V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng - H\u1ec7 th\u1ed1ng b\u00e1n xe\" \/><\/p>\n<\/div>\n<footer class=\"entry-footer\">\n<div class=\"av-share-box\">\n<h5 class=\"av-share-link-description av-no-toc \"><span>Chia s\u1ebb m\u1ee5c n\u00e0y<\/span><\/h5>\n<\/div>\n<\/footer>\n","protected":false},"excerpt":{"rendered":"<p>A use case diagram is a Unified Modeling Language (UML) diagram for requirements elicitation. Use case diagrams provide a graphical overview of the goals (modeled by use cases) that users (represented by actors) want to achieve by using the system. Use cases in a use case diagram can be organized and arranged according to their relevance, level of abstraction, and impact on the user. They can be linked to show their dependencies, include, extend, generation relationships.<\/p>\n","protected":false},"author":1,"featured_media":3559,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[36],"tags":[],"class_list":["post-3548","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uml","loop-entry","clr"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>S\u01a1 \u0110\u1ed3 Ca S\u1eed D\u1ee5ng - H\u01b0\u1edbng D\u1eabn K\u00fd Hi\u1ec7u - Visual Paradigm Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.visual-paradigm.com\/vn\/use-case-diagram-a-notation-guide\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"S\u01a1 \u0110\u1ed3 Ca S\u1eed D\u1ee5ng - H\u01b0\u1edbng D\u1eabn K\u00fd Hi\u1ec7u - Visual Paradigm Blog\" \/>\n<meta property=\"og:description\" content=\"A use case diagram is a Unified Modeling Language (UML) diagram for requirements elicitation. 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