{"id":1669,"date":"2026-03-06T12:43:46","date_gmt":"2026-03-06T12:43:46","guid":{"rendered":"https:\/\/www.tech-posts.com\/vi\/mastering-extension-points-in-use-case-diagrams-a-guide-to-identifying-and-implementing-segments\/"},"modified":"2026-03-06T12:43:46","modified_gmt":"2026-03-06T12:43:46","slug":"mastering-extension-points-in-use-case-diagrams-a-guide-to-identifying-and-implementing-segments","status":"publish","type":"post","link":"https:\/\/www.tech-posts.com\/vi\/mastering-extension-points-in-use-case-diagrams-a-guide-to-identifying-and-implementing-segments\/","title":{"rendered":"N\u1eafm v\u1eefng c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng trong s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: H\u01b0\u1edbng d\u1eabn x\u00e1c \u0111\u1ecbnh v\u00e0 tri\u1ec3n khai c\u00e1c \u0111o\u1ea1n <<extend>>"},"content":{"rendered":"<p dir=\"auto\">Trong <a href=\"https:\/\/en.wikipedia.org\/wiki\/Unified_Modeling_Language\">Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML)<\/a>, <a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-use-case-diagram\/\">s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/a>l\u00e0 nh\u1eefng c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd \u0111\u1ec3 ghi l\u1ea1i c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng. M\u1ed9t \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y l\u00e0 m\u1ed1i quan h\u1ec7 &lt;&lt;extend&gt;&gt;, cho ph\u00e9p ch\u00e8n h\u00e0nh vi t\u00f9y ch\u1ecdn ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n v\u00e0o m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n t\u1ea1i c\u00e1c \u0111i\u1ec3m c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0<strong>c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng<\/strong>. Vi\u1ec7c x\u00e1c \u0111\u1ecbnh \u0111\u00fang v\u1ecb tr\u00ed \u0111\u1ec3 ch\u00e8n c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t trong vi\u1ec7c t\u1ea1o ra c\u00e1c m\u00f4 h\u00ecnh tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u00f3 t\u00ednh module, t\u00e1i s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c v\u00e0 r\u00f5 r\u00e0ng. B\u00e0i vi\u1ebft n\u00e0y cung c\u1ea5p h\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 tri\u1ec3n khai c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng, \u0111\u01b0\u1ee3c b\u1ed5 sung c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf \u0111\u1ec3 minh h\u1ecda c\u00e1ch \u00e1p d\u1ee5ng ch\u00fang trong c\u00e1c t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf.<\/p>\n<h2 dir=\"auto\">C\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng v\u00e0 m\u1ed1i quan h\u1ec7 &lt;&lt;extend&gt;&gt; l\u00e0 g\u00ec?<\/h2>\n<p dir=\"auto\">M\u1ed9t<strong>\u0111i\u1ec3m m\u1edf r\u1ed9ng<\/strong>l\u00e0 m\u1ed9t v\u1ecb tr\u00ed c\u1ee5 th\u1ec3 trong m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n n\u01a1i c\u00f3 th\u1ec3 ch\u00e8n th\u00eam h\u00e0nh vi t\u00f9y ch\u1ecdn ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n (t\u1eeb m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng m\u1edf r\u1ed9ng). M\u1ed1i quan h\u1ec7 &lt;&lt;extend&gt;&gt; cho th\u1ea5y r\u1eb1ng tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng m\u1edf r\u1ed9ng th\u00eam h\u00e0nh vi v\u00e0o tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n trong m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh, m\u00e0 kh\u00f4ng l\u00e0m thay \u0111\u1ed5i lu\u1ed3ng ch\u00ednh c\u1ee7a n\u00f3. \u0110i\u1ec1u n\u00e0y gi\u00fap thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng linh ho\u1ea1t, cho ph\u00e9p th\u00eam c\u00e1c t\u00ednh n\u0103ng t\u00f9y ch\u1ecdn ho\u1eb7c bi\u1ebfn th\u1ec3 m\u00e0 v\u1eabn gi\u1eef cho tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n \u0111\u1ed9c l\u1eadp v\u00e0 ho\u00e0n ch\u1ec9nh.<\/p>\n<p dir=\"auto\">V\u00ed d\u1ee5, trong m\u1ed9t h\u1ec7 th\u1ed1ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n<strong>\u201c\u0110\u1eb7t h\u00e0ng\u201d<\/strong>c\u00f3 th\u1ec3 bao g\u1ed3m m\u1ed9t \u0111i\u1ec3m m\u1edf r\u1ed9ng cho<strong>\u201c\u00c1p d\u1ee5ng gi\u1ea3m gi\u00e1\u201d<\/strong>, ch\u1ec9 k\u00edch ho\u1ea1t khi ng\u01b0\u1eddi d\u00f9ng nh\u1eadp m\u00e3 gi\u1ea3m gi\u00e1 h\u1ee3p l\u1ec7. Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n v\u1eabn ho\u1ea1t \u0111\u1ed9ng m\u00e0 kh\u00f4ng c\u1ea7n gi\u1ea3m gi\u00e1, nh\u01b0ng \u0111i\u1ec3m m\u1edf r\u1ed9ng s\u1ebd n\u00e2ng cao n\u00f3 khi ph\u00f9 h\u1ee3p.<\/p>\n<h2 dir=\"auto\">T\u1ea1i sao c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng l\u1ea1i quan tr\u1ecdng?<\/h2>\n<p dir=\"auto\">C\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng n\u00e2ng cao s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng b\u1eb1ng c\u00e1ch:<\/p>\n<ul dir=\"auto\">\n<li><strong>T\u00e1ch bi\u1ec7t h\u00e0nh vi<\/strong>: T\u00e1ch h\u00e0nh vi t\u00f9y ch\u1ecdn ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n th\u00e0nh c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ri\u00eang bi\u1ec7t gi\u00fap t\u0103ng t\u00ednh r\u00f5 r\u00e0ng v\u00e0 kh\u1ea3 n\u0103ng t\u00e1i s\u1eed d\u1ee5ng.<\/li>\n<li><strong>H\u1ed7 tr\u1ee3 t\u00ednh linh ho\u1ea1t<\/strong>: Ch\u00fang cho ph\u00e9p h\u1ec7 th\u1ed1ng ch\u1ea5p nh\u1eadn c\u00e1c bi\u1ebfn th\u1ec3 m\u00e0 kh\u00f4ng l\u00e0m r\u1ed1i r\u1eafm tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n.<\/li>\n<li><strong>C\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec<\/strong>: C\u00e1c thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi h\u00e0nh vi t\u00f9y ch\u1ecdn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n m\u00e0 kh\u00f4ng c\u1ea7n s\u1eeda \u0111\u1ed5i tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ch\u00ednh.<\/li>\n<li><strong>N\u00e2ng cao giao ti\u1ebfp v\u1edbi c\u00e1c b\u00ean li\u00ean quan<\/strong>: C\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean r\u00f5 r\u00e0ng gi\u00fap c\u00e1c b\u00ean li\u00ean quan d\u1ec5 hi\u1ec3u h\u01a1n v\u1ec1 n\u01a1i v\u00e0 l\u00fd do c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng x\u1ea3y ra.<\/li>\n<\/ul>\n<p dir=\"auto\">Tuy nhi\u00ean, vi\u1ec7c x\u00e1c \u0111\u1ecbnh \u0111\u00fang v\u1ecb tr\u00ed cho c\u00e1c \u0111o\u1ea1n &lt;&lt;extend&gt;&gt; \u0111\u00f2i h\u1ecfi ph\u00e2n t\u00edch c\u1ea9n th\u1eadn. D\u01b0\u1edbi \u0111\u00e2y, ch\u00fang t\u00f4i tr\u00ecnh b\u00e0y m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c v\u1ecb tr\u00ed n\u00e0y, k\u00e8m theo c\u00e1c v\u00ed d\u1ee5 minh h\u1ecda.<\/p>\n<h2 dir=\"auto\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng cho c\u00e1c \u0111o\u1ea1n &lt;&lt;extend&gt;&gt;<\/h2>\n<p dir=\"auto\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 h\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc \u0111\u1ec3 t\u00ecm v\u00e0 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng trong m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng:<\/p>\n<h3 dir=\"auto\">1. Ph\u00e2n t\u00edch lu\u1ed3ng tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n<\/h3>\n<p dir=\"auto\">B\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch xem x\u00e9t k\u1ef9 l\u01b0\u1ee1ng <strong>t\u00ecnh hu\u1ed1ng th\u00e0nh c\u00f4ng ch\u00ednh<\/strong> v\u00e0 <strong>lu\u1ed3ng thay th\u1ebf<\/strong> c\u1ee7a tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n. T\u00ecm c\u00e1c b\u01b0\u1edbc m\u00e0:<\/p>\n<ul dir=\"auto\">\n<li>H\u00e0nh vi b\u1ed5 sung c\u00f3 th\u1ec3 x\u1ea3y ra t\u00f9y ch\u1ecdn (v\u00ed d\u1ee5: c\u00e1c h\u00e0nh \u0111\u1ed9ng do ng\u01b0\u1eddi d\u00f9ng k\u00edch ho\u1ea1t).<\/li>\n<li>C\u00e1c h\u00e0nh \u0111\u1ed9ng \u0111i\u1ec1u ki\u1ec7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u00e8n v\u00e0o d\u1ef1a tr\u00ean c\u00e1c t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3.<\/li>\n<li>C\u00e1c bi\u1ebfn th\u1ec3 ho\u1eb7c c\u1ea3i ti\u1ebfn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o m\u00e0 kh\u00f4ng l\u00e0m gi\u00e1n \u0111o\u1ea1n lu\u1ed3ng ch\u00ednh.<\/li>\n<\/ul>\n<p dir=\"auto\"><strong>V\u00ed d\u1ee5<\/strong>: Trong m\u1ed9t <strong>\u201c\u0110\u0103ng nh\u1eadp v\u00e0o H\u1ec7 th\u1ed1ng\u201d<\/strong> tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, lu\u1ed3ng ch\u00ednh bao g\u1ed3m nh\u1eadp th\u00f4ng tin \u0111\u0103ng nh\u1eadp v\u00e0 x\u00e1c th\u1ef1c. M\u1ed9t b\u01b0\u1edbc t\u00f9y ch\u1ecdn, ch\u1eb3ng h\u1ea1n nh\u01b0 <strong>\u201cK\u00edch ho\u1ea1t X\u00e1c th\u1ef1c hai y\u1ebfu t\u1ed1\u201d<\/strong>, c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t \u0111i\u1ec3m m\u1edf r\u1ed9ng \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t ch\u1ec9 khi ng\u01b0\u1eddi d\u00f9ng \u0111\u00e3 k\u00edch ho\u1ea1t t\u00ednh n\u0103ng n\u00e0y.<\/p>\n<h3 dir=\"auto\">2. X\u00e1c \u0111\u1ecbnh h\u00e0nh vi t\u00f9y ch\u1ecdn ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n<\/h3>\n<p dir=\"auto\">T\u1eadp trung v\u00e0o c\u00e1c ph\u1ea7n c\u1ee7a tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n. Nh\u1eefng ph\u1ea7n n\u00e0y c\u00f3 th\u1ec3 bao g\u1ed3m:<\/p>\n<ul dir=\"auto\">\n<li>Nh\u1eadp li\u1ec7u t\u00f9y ch\u1ecdn t\u1eeb ng\u01b0\u1eddi d\u00f9ng (v\u00ed d\u1ee5: th\u00eam bao qu\u00e0 trong quy tr\u00ecnh \u0111\u1eb7t h\u00e0ng).<\/li>\n<li>C\u00e1c tr\u01b0\u1eddng h\u1ee3p ngo\u1ea1i l\u1ec7 (v\u00ed d\u1ee5: x\u1eed l\u00fd l\u1ed7i thanh to\u00e1n).<\/li>\n<li>C\u00e1c c\u1ea3i ti\u1ebfn \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3 (v\u00ed d\u1ee5: \u00e1p d\u1ee5ng m\u00e3 gi\u1ea3m gi\u00e1).<\/li>\n<\/ul>\n<p dir=\"auto\"><strong>V\u00ed d\u1ee5<\/strong>: Trong m\u1ed9t <strong>\u201c\u0110\u1eb7t v\u00e9 m\u00e1y bay\u201d<\/strong> tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, h\u00e0nh kh\u00e1ch c\u00f3 th\u1ec3 c\u00f3 t\u00f9y ch\u1ecdn <strong>\u201cCh\u1ecdn s\u1edf th\u00edch ch\u1ed7 ng\u1ed3i\u201d<\/strong> (v\u00ed d\u1ee5: c\u1eeda s\u1ed5 ho\u1eb7c h\u00e0nh lang). B\u01b0\u1edbc n\u00e0y kh\u00f4ng b\u1eaft bu\u1ed9c khi \u0111\u1eb7t v\u00e9 nh\u01b0ng c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m khi \u0111\u01b0\u1ee3c ch\u1ecdn, l\u00e0m cho n\u00f3 tr\u1edf th\u00e0nh \u1ee9ng c\u1eed vi\u00ean cho m\u1ed9t \u0111i\u1ec3m m\u1edf r\u1ed9ng.<\/p>\n<h3 dir=\"auto\">3. X\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng c\u00f3 \u00fd ngh\u0129a v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean r\u00f5 r\u00e0ng<\/h3>\n<p dir=\"auto\">M\u1ed7i \u0111i\u1ec3m m\u1edf r\u1ed9ng n\u00ean c\u00f3 t\u00ean r\u00f5 r\u00e0ng, m\u00f4 t\u1ea3, ph\u1ea3n \u00e1nh m\u1ee5c \u0111\u00edch c\u1ee7a n\u00f3. \u0110i\u1ec1u n\u00e0y gi\u00fap c\u1ea3 nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 c\u00e1c b\u00ean li\u00ean quan hi\u1ec3u \u0111\u01b0\u1ee3c n\u01a1i v\u00e0 l\u00fd do m\u1edf r\u1ed9ng x\u1ea3y ra.<\/p>\n<p dir=\"auto\"><strong>V\u00ed d\u1ee5<\/strong>: Trong m\u1ed9t <strong>\u201cX\u1eed l\u00fd thanh to\u00e1n\u201d<\/strong> tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, m\u1ed9t \u0111i\u1ec3m m\u1edf r\u1ed9ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0<strong>\u201cX\u00e1c th\u1ef1c m\u00e3 gi\u1ea3m gi\u00e1\u201d<\/strong> r\u00f5 r\u00e0ng cho th\u1ea5y h\u00e0nh vi m\u1edf r\u1ed9ng bao g\u1ed3m vi\u1ec7c ki\u1ec3m tra v\u00e0 \u00e1p d\u1ee5ng m\u00e3 gi\u1ea3m gi\u00e1, \u0111i\u1ec1u n\u00e0y ch\u1ec9 x\u1ea3y ra n\u1ebfu ng\u01b0\u1eddi d\u00f9ng cung c\u1ea5p m\u00e3.<\/p>\n<h3 dir=\"auto\">4. \u0110\u1ea3m b\u1ea3o t\u00ednh \u0111\u1ed9c l\u1eadp c\u1ee7a tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n<\/h3>\n<p dir=\"auto\">Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n ph\u1ea3i v\u1eabn gi\u1eef nguy\u00ean<strong>ho\u00e0n ch\u1ec9nh v\u00e0 c\u00f3 \u00fd ngh\u0129a<\/strong>m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u1ebfn h\u00e0nh vi m\u1edf r\u1ed9ng. C\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng n\u00ean n\u00e2ng cao ho\u1eb7c th\u00eam ch\u1ee9c n\u0103ng t\u00f9y ch\u1ecdn, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t cho th\u00e0nh c\u00f4ng c\u1ee7a tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n.<\/p>\n<p dir=\"auto\"><strong>V\u00ed d\u1ee5<\/strong>: Trong m\u1ed9t<strong>\u201cN\u1ed9p \u0111\u01a1n \u1ee9ng tuy\u1ec3n\u201d<\/strong> tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng cho m\u1ed9t trang tuy\u1ec3n d\u1ee5ng, m\u1ed9t \u0111i\u1ec3m m\u1edf r\u1ed9ng nh\u01b0<strong>\u201cT\u1ea3i l\u00ean t\u00e0i li\u1ec7u b\u1ed5 sung\u201d<\/strong> cho ph\u00e9p \u1ee9ng vi\u00ean cung c\u1ea5p th\u00eam c\u00e1c t\u1eadp tin (v\u00ed d\u1ee5: ch\u1ee9ng ch\u1ec9). Quy tr\u00ecnh n\u1ed9p \u0111\u01a1n v\u1eabn ho\u00e0n t\u1ea5t m\u00e0 kh\u00f4ng c\u1ea7n b\u01b0\u1edbc n\u00e0y, nh\u01b0ng \u0111i\u1ec3m m\u1edf r\u1ed9ng n\u00e0y mang l\u1ea1i gi\u00e1 tr\u1ecb cho m\u1ed9t s\u1ed1 ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h3 dir=\"auto\">5. T\u1eadn d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 m\u00f4 h\u00ecnh h\u00f3a<\/h3>\n<p dir=\"auto\">C\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 Visual Paradigm gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng. Trong Visual Paradigm:<\/p>\n<ul dir=\"auto\">\n<li>Nh\u1ea5p chu\u1ed9t ph\u1ea3i v\u00e0o tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n, ch\u1ecdn<strong>Th\u00eam \u0111i\u1ec3m m\u1edf r\u1ed9ng<\/strong>, v\u00e0 g\u00e1n m\u1ed9t t\u00ean m\u00f4 t\u1ea3.<\/li>\n<li>T\u00e0i li\u1ec7u h\u00f3a c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng trong \u00f4 c\u1ee7a tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u1ec3 r\u00f5 r\u00e0ng h\u01a1n.<\/li>\n<li>K\u1ebft n\u1ed1i c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng m\u1edf r\u1ed9ng v\u1edbi c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng c\u1ee5 th\u1ec3 \u0111\u1ec3 th\u1ec3 hi\u1ec7n n\u01a1i h\u00e0nh vi c\u1ee7a ch\u00fang \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p.<\/li>\n<\/ul>\n<p dir=\"auto\"><strong>V\u00ed d\u1ee5<\/strong>: Trong Visual Paradigm, \u0111\u1ed1i v\u1edbi m\u1ed9t<strong>\u201cThanh to\u00e1n\u201d<\/strong> tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, b\u1ea1n c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1ed9t \u0111i\u1ec3m m\u1edf r\u1ed9ng g\u1ecdi l\u00e0<strong>\u201cX\u00e1c \u0111\u1ecbnh h\u01b0\u1edbng d\u1eabn giao h\u00e0ng\u201d<\/strong> v\u00e0 li\u00ean k\u1ebft n\u00f3 v\u1edbi m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng m\u1edf r\u1ed9ng<strong>\u201cTh\u00eam ghi ch\u00fa giao h\u00e0ng \u0111\u1eb7c bi\u1ec7t\u201d<\/strong>.<\/p>\n<h3 dir=\"auto\">6. \u00c1p d\u1ee5ng c\u00e1c t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf<\/h3>\n<p dir=\"auto\">Vi\u1ec7c li\u00ean k\u1ebft c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng v\u1edbi c\u00e1c t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf \u0111\u1ea3m b\u1ea3o ch\u00fang ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c y\u00eau c\u1ea7u c\u1ee7a h\u1ec7 th\u1ed1ng. Ki\u1ec3m tra c\u00e1c l\u1ef1a ch\u1ecdn c\u1ee7a b\u1ea1n b\u1eb1ng c\u00e1ch xem x\u00e9t ch\u00fang ph\u00f9 h\u1ee3p nh\u01b0 th\u1ebf n\u00e0o v\u1edbi quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 t\u01b0\u01a1ng t\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h2 dir=\"auto\">C\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u1ec1 c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng<\/h2>\n<p dir=\"auto\">H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 m\u1ed9t s\u1ed1 v\u00ed d\u1ee5 th\u1ef1c t\u1ebf \u0111\u1ec3 minh h\u1ecda c\u00e1ch x\u00e1c \u0111\u1ecbnh v\u00e0 tri\u1ec3n khai c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<h3 dir=\"auto\">V\u00ed d\u1ee5 1: H\u1ec7 th\u1ed1ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed \u2013 \u0110\u1eb7t h\u00e0ng<\/h3>\n<ul dir=\"auto\">\n<li><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n<\/strong>: <strong>\u0110\u1eb7t h\u00e0ng<\/strong><br \/>\nNg\u01b0\u1eddi d\u00f9ng ch\u1ecdn c\u00e1c m\u1eb7t h\u00e0ng, nh\u1eadp th\u00f4ng tin thanh to\u00e1n v\u00e0 x\u00e1c nh\u1eadn \u0111\u01a1n h\u00e0ng.<\/li>\n<li><strong>C\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng<\/strong>:\n<ol dir=\"auto\">\n<li><strong>\u00c1p d\u1ee5ng gi\u1ea3m gi\u00e1<\/strong>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t khi ng\u01b0\u1eddi d\u00f9ng nh\u1eadp m\u00e3 gi\u1ea3m gi\u00e1 h\u1ee3p l\u1ec7 trong qu\u00e1 tr\u00ecnh thanh to\u00e1n.<\/li>\n<li><strong>X\u00e1c \u0111\u1ecbnh h\u01b0\u1edbng d\u1eabn giao h\u00e0ng<\/strong>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t n\u1ebfu ng\u01b0\u1eddi d\u00f9ng mu\u1ed1n th\u00eam ghi ch\u00fa giao h\u00e0ng \u0111\u1eb7c bi\u1ec7t (v\u00ed d\u1ee5: \u201c\u0110\u1ec3 g\u00f3i h\u00e0ng \u1edf c\u1eeda sau\u201d).<\/li>\n<\/ol>\n<\/li>\n<li><strong>M\u1edf r\u1ed9ng c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/strong>:\n<ul dir=\"auto\">\n<li><strong>\u00c1p d\u1ee5ng gi\u1ea3m gi\u00e1<\/strong>: X\u00e1c th\u1ef1c m\u00e3 v\u00e0 \u0111i\u1ec1u ch\u1ec9nh t\u1ed5ng gi\u00e1 tr\u1ecb \u0111\u01a1n h\u00e0ng.<\/li>\n<li><strong>Th\u00eam ghi ch\u00fa giao h\u00e0ng \u0111\u1eb7c bi\u1ec7t<\/strong>: Cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng nh\u1eadp c\u00e1c h\u01b0\u1edbng d\u1eabn t\u00f9y ch\u1ec9nh.<\/li>\n<\/ul>\n<\/li>\n<li><strong>L\u00fd do<\/strong>: C\u00e1c m\u1edf r\u1ed9ng n\u00e0y l\u00e0 t\u00f9y ch\u1ecdn v\u00e0 ch\u1ec9 x\u1ea3y ra trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3 (v\u00ed d\u1ee5: m\u00e3 gi\u1ea3m gi\u00e1 h\u1ee3p l\u1ec7 ho\u1eb7c s\u1edf th\u00edch c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u1ec1 h\u01b0\u1edbng d\u1eabn \u0111\u1eb7c bi\u1ec7t). Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n v\u1eabn ho\u00e0n ch\u1ec9nh m\u00e0 kh\u00f4ng c\u1ea7n ch\u00fang.<\/li>\n<\/ul>\n<h3 dir=\"auto\">V\u00ed d\u1ee5 2: H\u1ec7 th\u1ed1ng ng\u00e2n h\u00e0ng \u2013 R\u00fat ti\u1ec1n<\/h3>\n<ul dir=\"auto\">\n<li><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n<\/strong>: <strong>R\u00fat ti\u1ec1n<\/strong><br \/>\nNg\u01b0\u1eddi d\u00f9ng \u0111\u01b0a th\u1ebb v\u00e0o, nh\u1eadp m\u00e3 PIN, ch\u1ecdn s\u1ed1 ti\u1ec1n v\u00e0 nh\u1eadn ti\u1ec1n m\u1eb7t.<\/li>\n<li><strong>C\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng<\/strong>:\n<ol dir=\"auto\">\n<li><strong>Y\u00eau c\u1ea7u h\u00f3a \u0111\u01a1n<\/strong>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t n\u1ebfu ng\u01b0\u1eddi d\u00f9ng ch\u1ecdn nh\u1eadn bi\u00ean lai giao d\u1ecbch.<\/li>\n<li><strong>Ki\u1ec3m tra s\u1ed1 d\u01b0 tr\u01b0\u1edbc khi r\u00fat ti\u1ec1n<\/strong>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t n\u1ebfu ng\u01b0\u1eddi d\u00f9ng ch\u1ecdn xem s\u1ed1 d\u01b0 t\u00e0i kho\u1ea3n tr\u01b0\u1edbc khi r\u00fat ti\u1ec1n.<\/li>\n<\/ol>\n<\/li>\n<li><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p m\u1edf r\u1ed9ng<\/strong>:\n<ul dir=\"auto\">\n<li><strong>In bi\u00ean lai<\/strong>: T\u1ea1o v\u00e0 in ra bi\u00ean lai giao d\u1ecbch.<\/li>\n<li><strong>Hi\u1ec3n th\u1ecb s\u1ed1 d\u01b0 t\u00e0i kho\u1ea3n<\/strong>: Hi\u1ec3n th\u1ecb s\u1ed1 d\u01b0 hi\u1ec7n t\u1ea1i c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<\/ul>\n<\/li>\n<li><strong>L\u00fd do<\/strong>: Nh\u1eefng h\u00e0nh vi n\u00e0y l\u00e0 t\u00f9y ch\u1ecdn v\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn quy tr\u00ecnh r\u00fat ti\u1ec1n ch\u00ednh, khi\u1ebfn ch\u00fang l\u00fd t\u01b0\u1edfng cho c\u00e1c m\u1ed1i quan h\u1ec7 &lt;&lt;extend&gt;&gt;.<\/li>\n<\/ul>\n<h3 dir=\"auto\">V\u00ed d\u1ee5 3: N\u1ec1n t\u1ea3ng h\u1ecdc tr\u1ef1c tuy\u1ebfn \u2013 L\u00e0m b\u00e0i ki\u1ec3m tra<\/h3>\n<ul dir=\"auto\">\n<li><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n<\/strong>: <strong>L\u00e0m b\u00e0i ki\u1ec3m tra<\/strong><br \/>\nSinh vi\u00ean \u0111\u0103ng nh\u1eadp, ch\u1ecdn m\u1ed9t b\u00e0i ki\u1ec3m tra, tr\u1ea3 l\u1eddi c\u00e1c c\u00e2u h\u1ecfi v\u00e0 g\u1eedi l\u1ea1i ph\u1ea3n h\u1ed3i.<\/li>\n<li><strong>\u0110i\u1ec3m m\u1edf r\u1ed9ng<\/strong>:\n<ol dir=\"auto\">\n<li><strong>Y\u00eau c\u1ea7u th\u00eam th\u1eddi gian<\/strong>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t n\u1ebfu sinh vi\u00ean c\u00f3 \u0111i\u1ec1u ki\u1ec7n \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c ph\u00e9p th\u00eam th\u1eddi gian.<\/li>\n<li><strong>L\u01b0u ti\u1ebfn \u0111\u1ed9<\/strong>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t n\u1ebfu sinh vi\u00ean ch\u1ecdn l\u01b0u c\u00e2u tr\u1ea3 l\u1eddi v\u00e0 ti\u1ebfp t\u1ee5c sau.<\/li>\n<\/ol>\n<\/li>\n<li><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p m\u1edf r\u1ed9ng<\/strong>:\n<ul dir=\"auto\">\n<li><strong>C\u1ea5p th\u00eam th\u1eddi gian<\/strong>: K\u00e9o d\u00e0i th\u1eddi gian l\u00e0m b\u00e0i ki\u1ec3m tra cho c\u00e1c sinh vi\u00ean \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n.<\/li>\n<li><strong>L\u01b0u v\u00e0 ti\u1ebfp t\u1ee5c l\u00e0m b\u00e0i ki\u1ec3m tra<\/strong>: Cho ph\u00e9p ho\u00e0n th\u00e0nh m\u1ed9t ph\u1ea7n v\u00e0 ti\u1ebfp t\u1ee5c sau.<\/li>\n<\/ul>\n<\/li>\n<li><strong>L\u00fd do<\/strong>: Nh\u1eefng m\u1edf r\u1ed9ng n\u00e0y l\u00e0 c\u00f3 \u0111i\u1ec1u ki\u1ec7n (v\u00ed d\u1ee5: d\u1ef1a tr\u00ean \u0111i\u1ec1u ki\u1ec7n ho\u1eb7c l\u1ef1a ch\u1ecdn c\u1ee7a ng\u01b0\u1eddi d\u00f9ng) v\u00e0 n\u00e2ng cao tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n m\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft.<\/li>\n<\/ul>\n<h3 dir=\"auto\">V\u00ed d\u1ee5 4: H\u1ec7 th\u1ed1ng th\u01b0 vi\u1ec7n \u2013 M\u01b0\u1ee3n s\u00e1ch<\/h3>\n<ul dir=\"auto\">\n<li><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n<\/strong>: <strong>M\u01b0\u1ee3n s\u00e1ch<\/strong><br \/>\nNg\u01b0\u1eddi d\u00f9ng t\u00ecm ki\u1ebfm m\u1ed9t cu\u1ed1n s\u00e1ch, ch\u1ecdn n\u00f3 v\u00e0 m\u01b0\u1ee3n n\u00f3 b\u1eb1ng th\u1ebb th\u01b0 vi\u1ec7n c\u1ee7a m\u00ecnh.<\/li>\n<li><strong>\u0110i\u1ec3m m\u1edf r\u1ed9ng<\/strong>:\n<ol dir=\"auto\">\n<li><strong>\u0110\u1eb7t tr\u01b0\u1edbc s\u00e1ch<\/strong>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t n\u1ebfu s\u00e1ch kh\u00f4ng c\u00f3 s\u1eb5n v\u00e0 ng\u01b0\u1eddi d\u00f9ng mu\u1ed1n \u0111\u1eb7t tr\u01b0\u1edbc n\u00f3.<\/li>\n<li><strong>Thanh to\u00e1n ph\u00ed qu\u00e1 h\u1ea1n<\/strong>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t n\u1ebfu ng\u01b0\u1eddi d\u00f9ng c\u00f3 c\u00e1c kho\u1ea3n ph\u00ed qu\u00e1 h\u1ea1n c\u1ea7n \u0111\u01b0\u1ee3c thanh to\u00e1n tr\u01b0\u1edbc khi m\u01b0\u1ee3n s\u00e1ch.<\/li>\n<\/ol>\n<\/li>\n<li><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng m\u1edf r\u1ed9ng<\/strong>:\n<ul dir=\"auto\">\n<li><strong>\u0110\u1eb7t \u0111\u1eb7t tr\u01b0\u1edbc<\/strong>: Th\u00eam ng\u01b0\u1eddi d\u00f9ng v\u00e0o danh s\u00e1ch ch\u1edd \u0111\u1ec3 m\u01b0\u1ee3n s\u00e1ch.<\/li>\n<li><strong>Thanh to\u00e1n ph\u00ed<\/strong>: X\u1eed l\u00fd thanh to\u00e1n cho b\u1ea5t k\u1ef3 kho\u1ea3n ph\u00ed qu\u00e1 h\u1ea1n n\u00e0o.<\/li>\n<\/ul>\n<\/li>\n<li><strong>L\u00fd do<\/strong>: Nh\u1eefng h\u00e0nh \u0111\u1ed9ng n\u00e0y l\u00e0 \u0111i\u1ec1u ki\u1ec7n (v\u00ed d\u1ee5: s\u00e1ch kh\u00f4ng c\u00f3 s\u1eb5n ho\u1eb7c ph\u00ed ch\u01b0a thanh to\u00e1n) v\u00e0 kh\u00f4ng ph\u1ea3i l\u00e0 ph\u1ea7n c\u1ee7a m\u1ecdi quy tr\u00ecnh m\u01b0\u1ee3n s\u00e1ch.<\/li>\n<\/ul>\n<h2 dir=\"auto\">C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111i\u1ec3m m\u1edf r\u1ed9ng<\/h2>\n<p dir=\"auto\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o vi\u1ec7c s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng, h\u00e3y tu\u00e2n theo c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t sau:<\/p>\n<ol dir=\"auto\">\n<li><strong>Gi\u1eef t\u00ean m\u00f4 t\u1ea3 r\u00f5 r\u00e0ng<\/strong>: S\u1eed d\u1ee5ng t\u00ean r\u00f5 r\u00e0ng, c\u1ee5 th\u1ec3 nh\u01b0<strong>\u201c\u00c1p d\u1ee5ng phi\u1ebfu gi\u1ea3m gi\u00e1\u201d<\/strong> ho\u1eb7c <strong>\u201cCh\u1ecdn s\u1edf th\u00edch ch\u1ed7 ng\u1ed3i\u201d<\/strong>\u0111\u1ec3 tr\u00e1nh hi\u1ec3u nh\u1ea7m.<\/li>\n<li><strong>X\u00e1c minh t\u00ednh \u0111\u1ed9c l\u1eadp<\/strong>: X\u00e1c nh\u1eadn r\u1eb1ng tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 b\u1ea3n ho\u1ea1t \u0111\u1ed9ng \u0111\u1ea7y \u0111\u1ee7 m\u00e0 kh\u00f4ng c\u1ea7n h\u00e0nh vi m\u1edf r\u1ed9ng.<\/li>\n<li><strong>T\u00e0i li\u1ec7u \u0111i\u1ec1u ki\u1ec7n<\/strong>: X\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec1u ki\u1ec7n khi\u1ebfn ph\u1ea7n m\u1edf r\u1ed9ng \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t (v\u00ed d\u1ee5: \u201cN\u1ebfu ng\u01b0\u1eddi d\u00f9ng nh\u1eadp m\u00e3 gi\u1ea3m gi\u00e1 h\u1ee3p l\u1ec7\u201d).<\/li>\n<li><strong>S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3<\/strong>: T\u1eadn d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 UML nh\u01b0 Visual Paradigm ho\u1eb7c Enterprise Architect \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 li\u00ean k\u1ebft c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng m\u1ed9t c\u00e1ch tr\u1ef1c quan.<\/li>\n<li><strong>Th\u1eed nghi\u1ec7m c\u00f9ng c\u00e1c b\u00ean li\u00ean quan<\/strong>: Xem x\u00e9t c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng c\u00f9ng c\u00e1c b\u00ean li\u00ean quan \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u00fang ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng v\u00e0 k\u1ef3 v\u1ecdng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<\/ol>\n<h2 dir=\"auto\">Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<\/h2>\n<ul dir=\"auto\">\n<li><strong>S\u1eed d\u1ee5ng qu\u00e1 nhi\u1ec1u ph\u1ea7n m\u1edf r\u1ed9ng<\/strong>: Kh\u00f4ng s\u1eed d\u1ee5ng &lt;&lt;extend&gt;&gt; cho h\u00e0nh vi b\u1eaft bu\u1ed9c; thay v\u00e0o \u0111\u00f3, h\u00e3y s\u1eed d\u1ee5ng &lt;&lt;include&gt;&gt; cho c\u00e1c lu\u1ed3ng con c\u1ea7n thi\u1ebft.<\/li>\n<li><strong>C\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng m\u01a1 h\u1ed3<\/strong>: Tr\u00e1nh s\u1eed d\u1ee5ng c\u00e1c t\u00ean chung chung nh\u01b0 <strong>\u201cL\u00e0m \u0111i\u1ec1u g\u00ec \u0111\u00f3\u201d<\/strong> m\u00e0 kh\u00f4ng th\u1ec3 truy\u1ec1n \u0111\u1ea1t r\u00f5 m\u1ee5c \u0111\u00edch c\u1ee7a ph\u1ea7n m\u1edf r\u1ed9ng.<\/li>\n<li><strong>L\u00e0m r\u1ed1i r\u1eafm use case g\u1ed1c<\/strong>: \u0110\u1ea3m b\u1ea3o c\u00e1c ph\u1ea7n m\u1edf r\u1ed9ng th\u1ef1c s\u1ef1 l\u00e0 t\u00f9y ch\u1ecdn \u0111\u1ec3 tr\u00e1nh l\u00e0m ph\u1ee9c t\u1ea1p h\u00f3a lu\u1ed3ng ch\u00ednh.<\/li>\n<li><strong>B\u1ecf qua c\u00e1c \u0111i\u1ec1u ki\u1ec7n<\/strong>: Lu\u00f4n x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n k\u00edch ho\u1ea1t ph\u1ea7n m\u1edf r\u1ed9ng \u0111\u1ec3 duy tr\u00ec t\u00ednh r\u00f5 r\u00e0ng.<\/li>\n<\/ul>\n<h2 dir=\"auto\">Tr\u1ef1c quan h\u00f3a c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng trong c\u00f4ng c\u1ee5 UML<\/h2>\n<p dir=\"auto\">Trong c\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 Visual Paradigm, c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng \u0111\u01b0\u1ee3c ghi ch\u00fa trong ph\u1ea7n d\u00e0nh ri\u00eang cho use case g\u1ed1c. V\u00ed d\u1ee5:<\/p>\n<ul dir=\"auto\">\n<li><strong>Use Case<\/strong>: \u0110\u1eb7t h\u00e0ng\n<ul dir=\"auto\">\n<li><strong>C\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng<\/strong>:\n<ul dir=\"auto\">\n<li>\u00c1p d\u1ee5ng gi\u1ea3m gi\u00e1 (\u0110i\u1ec1u ki\u1ec7n: Ng\u01b0\u1eddi d\u00f9ng nh\u1eadp m\u00e3 gi\u1ea3m gi\u00e1 h\u1ee3p l\u1ec7)<\/li>\n<li>X\u00e1c \u0111\u1ecbnh h\u01b0\u1edbng d\u1eabn giao h\u00e0ng (\u0110i\u1ec1u ki\u1ec7n: Ng\u01b0\u1eddi d\u00f9ng ch\u1ecdn th\u00eam ghi ch\u00fa giao h\u00e0ng)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>C\u00e1c use case m\u1edf r\u1ed9ng \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi c\u00e1c \u0111i\u1ec3m n\u00e0y th\u00f4ng qua m\u1ed1i quan h\u1ec7 &lt;&lt;extend&gt;&gt;, th\u01b0\u1eddng \u0111i k\u00e8m ghi ch\u00fa n\u00eau r\u00f5 \u0111i\u1ec1u ki\u1ec7n.<\/li>\n<\/ul>\n<p dir=\"auto\">Bi\u1ec3u di\u1ec5n tr\u1ef1c quan n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 c\u00e1c b\u00ean li\u00ean quan c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng theo d\u00f5i c\u00e1ch th\u1ee9c v\u00e0 v\u1ecb tr\u00ed c\u00e1c ph\u1ea7n m\u1edf r\u1ed9ng \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p.<\/p>\n<h2 dir=\"auto\">K\u1ebft lu\u1eadn<\/h2>\n<p dir=\"auto\">Vi\u1ec7c x\u00e1c \u0111\u1ecbnh \u0111\u00fang c\u00e1c \u0111i\u1ec3m \u0111\u1ec3 ch\u00e8n c\u00e1c \u0111o\u1ea1n &lt;&lt;extend&gt;&gt; v\u00e0o m\u1ed9t use case \u0111\u00f2i h\u1ecfi s\u1ef1 hi\u1ec3u bi\u1ebft s\u00e2u s\u1eafc v\u1ec1 c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 ph\u00e2n t\u00edch c\u1ea9n th\u1eadn lu\u1ed3ng c\u1ee7a use case g\u1ed1c. B\u1eb1ng c\u00e1ch t\u1eadp trung v\u00e0o c\u00e1c h\u00e0nh vi t\u00f9y ch\u1ecdn ho\u1eb7c c\u00f3 \u0111i\u1ec1u ki\u1ec7n, \u0111\u1eb7t t\u00ean r\u00f5 r\u00e0ng v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh \u0111\u1ed9c l\u1eadp c\u1ee7a use case g\u1ed1c, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c m\u00f4 h\u00ecnh use case linh ho\u1ea1t v\u00e0 d\u1ec5 m\u1edf r\u1ed9ng. C\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf, nh\u01b0 \u00e1p d\u1ee5ng gi\u1ea3m gi\u00e1 trong h\u1ec7 th\u1ed1ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed ho\u1eb7c y\u00eau c\u1ea7u th\u00eam th\u1eddi gian trong m\u1ed9t b\u00e0i ki\u1ec3m tra, minh h\u1ecda r\u00f5 c\u00e1ch c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng n\u00e2ng cao thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng l\u00e0m r\u1ed1i r\u1eafm ch\u1ee9c n\u0103ng c\u1ed1t l\u00f5i.<\/p>\n<p dir=\"auto\">B\u1eb1ng c\u00e1ch tu\u00e2n theo c\u00e1c b\u01b0\u1edbc \u0111\u01b0\u1ee3c n\u00eau trong h\u01b0\u1edbng d\u1eabn n\u00e0y\u2014ph\u00e2n t\u00edch lu\u1ed3ng, x\u00e1c \u0111\u1ecbnh c\u00e1c h\u00e0nh vi t\u00f9y ch\u1ecdn, \u0111\u1eb7t t\u00ean r\u00f5 r\u00e0ng cho c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng v\u00e0 t\u1eadn d\u1ee5ng c\u00f4ng c\u1ee5 UML\u2014b\u1ea1n c\u00f3 th\u1ec3 th\u00e0nh th\u1ea1o ngh\u1ec7 thu\u1eadt x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y kh\u00f4ng ch\u1ec9 c\u1ea3i thi\u1ec7n t\u00ednh r\u00f5 r\u00e0ng v\u00e0 kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec c\u1ee7a s\u01a1 \u0111\u1ed3 use case c\u1ee7a b\u1ea1n m\u00e0 c\u00f2n \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 th\u00edch nghi v\u1edbi c\u00e1c y\u00eau c\u1ea7u ng\u00e0y c\u00e0ng thay \u0111\u1ed5i.<\/p>\n<div class=\"wspage_col wspage_list\">\n<div class=\"wspage_in\">\n<div class=\"fn__single_content\">\n<h2 dir=\"ltr\">Tham kh\u1ea3o<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/support\/documents\/vpuserguide\/94\/2575\/21179_documentingu.html\">T\u00e0i li\u1ec7u chi ti\u1ebft v\u1ec1 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng trong Visual Paradigm<\/a><br \/>\nH\u01b0\u1edbng d\u1eabn c\u00e1ch ch\u1ec9nh s\u1eeda v\u00e0 xem chi ti\u1ebft tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng trong Visual Paradigm.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/support\/documents\/vpuserguide\/94\/2575\/6362_drawinguseca.html\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 v\u1ebd s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng? \u2013 Visual Paradigm<\/a><br \/>\nH\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng UML b\u1eb1ng Visual Paradigm.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-use-case-diagram\/\">S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng l\u00e0 g\u00ec? \u2013 Visual Paradigm<\/a><br \/>\nT\u1ed5ng quan v\u1ec1 s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u00e0 vai tr\u00f2 c\u1ee7a ch\u00fang trong vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a h\u00e0nh vi h\u1ec7 th\u1ed1ng.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/support\/documents\/vpuserguide\/94\/2575_usecasediagr.html\">S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng trong Visual Paradigm<\/a><br \/>\nGi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u00e0 c\u00e1ch t\u00e0i li\u1ec7u h\u00f3a c\u00e1c s\u1ef1 ki\u1ec7n tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/li>\n<li><a href=\"https:\/\/circle.visual-paradigm.com\/docs\/uml-and-sysml\/use-case-diagram\/use-case-diagram-notations-guide\/\">H\u01b0\u1edbng d\u1eabn k\u00fd hi\u1ec7u s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u2013 Visual Paradigm<\/a><br \/>\nH\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 c\u00e1c k\u00fd hi\u1ec7u s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng UML \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 trong Visual Paradigm.<\/li>\n<li><a href=\"https:\/\/www.archimetric.com\/comprehensive-guide-to-creating-use-case-diagrams-with-visual-paradigm\/\">H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u1edbi Visual Paradigm<\/a><br \/>\nM\u1ed9t b\u00e0i h\u01b0\u1edbng d\u1eabn chi ti\u1ebft v\u1ec1 vi\u1ec7c x\u00e1c \u0111\u1ecbnh ng\u01b0\u1eddi d\u00f9ng, \u0111\u1ecbnh ngh\u0129a c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u00e0 m\u00f4 h\u00ecnh h\u00f3a c\u00e1c m\u1ed1i quan h\u1ec7 trong Visual Paradigm.<\/li>\n<li><a href=\"https:\/\/www.angelfire.com\/space\/umltutor\/UseCaseModeling\/\">M\u00f4 t\u1ea3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng trong Visual Paradigm cho UML \u2013 Angelfire<\/a><br \/>\nGi\u1ea3i th\u00edch v\u1ec1 m\u00f4 t\u1ea3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, l\u1eadp l\u1ecbch, chi ti\u1ebft h\u00f3a v\u00e0 t\u1ea1o t\u00e0i li\u1ec7u trong Visual Paradigm.<\/li>\n<li><a href=\"https:\/\/guides.visual-paradigm.com\/demystifying-use-case-models-bridging-textual-detail-and-visual-insight\/\">Gi\u1ea3i m\u00e3 c\u00e1c m\u00f4 h\u00ecnh tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: K\u1ebft n\u1ed1i chi ti\u1ebft v\u0103n b\u1ea3n v\u00e0 c\u00e1i nh\u00ecn tr\u1ef1c quan<\/a><br \/>\nTh\u1ea3o lu\u1eadn v\u1ec1 c\u00e1ch k\u1ebft h\u1ee3p chi ti\u1ebft tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u0103n b\u1ea3n v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 tr\u1ef1c quan trong Visual Paradigm.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/VPGallery\/diagrams\/UseCase.html\">S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u2013 C\u00f4ng c\u1ee5 m\u00f4 h\u00ecnh h\u00f3a UML \u2013 Visual Paradigm<\/a><br \/>\nTrang web ch\u00ednh th\u1ee9c c\u1ee7a Visual Paradigm gi\u1edbi thi\u1ec7u c\u00e1c t\u00ednh n\u0103ng v\u00e0 h\u1ed7 tr\u1ee3 k\u00fd hi\u1ec7u c\u1ee7a s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Trong Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML), s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ngl\u00e0 nh\u1eefng c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd \u0111\u1ec3 ghi l\u1ea1i c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng c\u1ee7a m\u1ed9t&hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[60,62,58],"tags":[],"class_list":["post-1669","post","type-post","status-publish","format-standard","hentry","category-unified-modeling-language","category-use-case-modeling","category-visual-paradigm"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>N\u1eafm v\u1eefng c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng trong s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: H\u01b0\u1edbng d\u1eabn x\u00e1c \u0111\u1ecbnh v\u00e0 tri\u1ec3n khai c\u00e1c \u0111o\u1ea1n  - Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation<\/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:\/\/www.tech-posts.com\/vi\/mastering-extension-points-in-use-case-diagrams-a-guide-to-identifying-and-implementing-segments\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"N\u1eafm v\u1eefng c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng trong s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: H\u01b0\u1edbng d\u1eabn x\u00e1c \u0111\u1ecbnh v\u00e0 tri\u1ec3n khai c\u00e1c \u0111o\u1ea1n  - Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation\" \/>\n<meta property=\"og:description\" content=\"Trong 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khai c\u00e1c \u0111o\u1ea1n  - Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.tech-posts.com\/vi\/mastering-extension-points-in-use-case-diagrams-a-guide-to-identifying-and-implementing-segments\/","og_locale":"vi_VN","og_type":"article","og_title":"N\u1eafm v\u1eefng c\u00e1c \u0111i\u1ec3m m\u1edf r\u1ed9ng trong s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: H\u01b0\u1edbng d\u1eabn x\u00e1c \u0111\u1ecbnh v\u00e0 tri\u1ec3n khai c\u00e1c \u0111o\u1ea1n  - Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation","og_description":"Trong Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML), s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ngl\u00e0 nh\u1eefng c\u00f4ng c\u1ee5 m\u1ea1nh 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