{"id":6617,"date":"2026-02-05T12:31:02","date_gmt":"2026-02-05T04:31:02","guid":{"rendered":"https:\/\/guides.visual-paradigm.com\/vn\/understanding-sequence-diagrams-a-visual-blueprint-of-software-interactions\/"},"modified":"2026-02-05T12:31:02","modified_gmt":"2026-02-05T04:31:02","slug":"understanding-sequence-diagrams-a-visual-blueprint-of-software-interactions","status":"publish","type":"post","link":"https:\/\/guides.visual-paradigm.com\/vn\/understanding-sequence-diagrams-a-visual-blueprint-of-software-interactions\/","title":{"rendered":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1: B\u1ea3n v\u1ebd tr\u1ef1c quan v\u1ec1 c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ea7n m\u1ec1m"},"content":{"rendered":"<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p>Trong l\u0129nh v\u1ef1c ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, giao ti\u1ebfp v\u00e0 h\u1ee3p t\u00e1c hi\u1ec7u qu\u1ea3 l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng nh\u1ea5t. C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, nh\u00e0 thi\u1ebft k\u1ebf v\u00e0 c\u00e1c b\u00ean li\u00ean quan ph\u1ea3i ph\u1ed1i h\u1ee3p m\u1ed9t c\u00e1ch tr\u01a1n tru \u0111\u1ec3 t\u1ea1o ra c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m m\u1ea1nh m\u1ebd v\u00e0 hi\u1ec7u qu\u1ea3. M\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd nh\u1ea5t \u0111\u1ec3 tr\u1ef1c quan h\u00f3a v\u00e0 t\u00e0i li\u1ec7u h\u00f3a c\u00e1c t\u01b0\u01a1ng t\u00e1c n\u00e0y l\u00e0 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u s\u00e2u v\u1ec1 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, kh\u00e1m ph\u00e1 m\u1ee5c \u0111\u00edch, c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed1t nh\u1ea5t \u0111\u1ec3 t\u1ea1o ra ch\u00fang.<\/p>\n<h2>S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 g\u00ec?<\/h2>\n<p>S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda v\u1ec1 c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u00e0nh ph\u1ea7n kh\u00e1c nhau trong m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh. N\u00f3 cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft v\u1ec1 c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau giao ti\u1ebfp v\u1edbi nhau \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ed9t m\u1ee5c ti\u00eau c\u1ee5 th\u1ec3 ho\u1eb7c th\u1ef1c hi\u1ec7n m\u1ed9t ch\u1ee9c n\u0103ng nh\u1ea5t \u0111\u1ecbnh. S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML) v\u00e0 \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, ki\u1ebfn tr\u00fac s\u01b0 v\u00e0 c\u00e1c b\u00ean li\u00ean quan kh\u00e1c.<\/p>\n<h2>C\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1<\/h2>\n<p><strong>\u0110\u01b0\u1eddng s\u1ed1ng:<\/strong>C\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng \u0111\u1ea1i di\u1ec7n cho c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u1ef1c th\u1ec3 tham gia v\u00e0o t\u01b0\u01a1ng t\u00e1c. Ch\u00fang c\u00f3 th\u1ec3 l\u00e0 c\u00e1c l\u1edbp, ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c th\u00e0nh ph\u1ea7n. M\u1ed7i \u0111\u01b0\u1eddng s\u1ed1ng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng \u0111\u1ee9t \u0111o\u1ea1n th\u1eb3ng \u0111\u1ee9ng, v\u00e0 \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi d\u1ef1a tr\u00ean m\u1ee9c \u0111\u1ed9 tham gia v\u00e0o chu\u1ed7i s\u1ef1 ki\u1ec7n.<\/p>\n<p>\u00a0<\/p>\n<p><img alt=\"Lifelines\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/09\/1_01-lifelines.png\"\/><\/p>\n<p><strong>Tin nh\u1eafn:<\/strong>C\u00e1c tin nh\u1eafn l\u00e0 c\u00e1c h\u00e0nh \u0111\u1ed9ng ho\u1eb7c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng. Ch\u00fang \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng c\u00e1c m\u0169i t\u00ean n\u1ed1i c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng. C\u00e1c tin nh\u1eafn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh nhi\u1ec1u lo\u1ea1i kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 tin nh\u1eafn \u0111\u1ed3ng b\u1ed9, tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9, tin nh\u1eafn t\u1ef1 th\u00e2n v\u00e0 tin nh\u1eafn tr\u1ea3 v\u1ec1, m\u1ed7i lo\u1ea1i th\u1ec3 hi\u1ec7n m\u1ed9t kh\u00eda c\u1ea1nh kh\u00e1c nhau c\u1ee7a t\u01b0\u01a1ng t\u00e1c.<\/p>\n<p>Trong l\u0129nh v\u1ef1c s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, ki\u1ec3u \u0111\u01b0\u1eddng v\u00e0 ki\u1ec3u \u0111\u1ea7u m\u0169i t\u00ean truy\u1ec1n t\u1ea3i th\u00f4ng tin quan tr\u1ecdng v\u1ec1 b\u1ea3n ch\u1ea5t c\u1ee7a c\u00e1c tin nh\u1eafn \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng:<\/p>\n<ul>\n<li><strong>Tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 (th\u01b0\u1eddng l\u00e0 l\u1eddi g\u1ecdi thao t\u00e1c)<\/strong>\n<ul>\n<li><em>Bi\u1ec3u di\u1ec5n:<\/em> C\u00e1c tin nh\u1eafn n\u00e0y \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng li\u1ec1n c\u00f3 \u0111\u1ea7u m\u0169i t\u00ean \u0111\u1ea7y.<\/li>\n<li><em>M\u1ee5c \u0111\u00edch:<\/em> C\u00e1c tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 bi\u1ec3u th\u1ecb giao ti\u1ebfp th\u01b0\u1eddng xuy\u00ean gi\u1eefa ng\u01b0\u1eddi g\u1eedi v\u00e0 ng\u01b0\u1eddi nh\u1eadn, th\u01b0\u1eddng th\u1ec3 hi\u1ec7n vi\u1ec7c g\u1ecdi th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c ho\u1eb7c l\u1eddi g\u1ecdi ph\u01b0\u01a1ng th\u1ee9c b\u00ean trong h\u1ec7 th\u1ed1ng.<\/li>\n<li><em>V\u00ed d\u1ee5:<\/em><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><img alt=\"Lifelines with synchronous message\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/09\/1_02-lifelines-with-synchronous-message.png\"\/><\/p>\n<p>\u00a0<\/p>\n<ul>\n<li><strong>Tin nh\u1eafn tr\u1ea3 v\u1ec1<\/strong>\n<ul>\n<li><em>Bi\u1ec3u di\u1ec5n:<\/em> C\u00e1c tin nh\u1eafn tr\u1ea3 v\u1ec1 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng \u0111\u01b0\u1eddng \u0111\u1ee9t \u0111o\u1ea1n v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean h\u1edf.<\/li>\n<li><em>M\u1ee5c \u0111\u00edch:<\/em> C\u00e1c tin nh\u1eafn n\u00e0y bi\u1ec3u th\u1ecb vi\u1ec7c tr\u1ea3 l\u1ea1i quy\u1ec1n ki\u1ec3m so\u00e1t ho\u1eb7c th\u00f4ng tin t\u1eeb ng\u01b0\u1eddi nh\u1eadn v\u1ec1 ng\u01b0\u1eddi g\u1eedi. Ch\u00fang th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n sau m\u1ed9t tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 tr\u01b0\u1edbc \u0111\u00f3.<\/li>\n<li><em>V\u00ed d\u1ee5:<\/em><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><img alt=\"Lifelines with return message\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/09\/03-lifelines-with-return-message.png\"\/><\/p>\n<ul>\n<li><strong>Tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9<\/strong><\/li>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><em>Bi\u1ec3u di\u1ec5n:<\/em> C\u00e1c tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9 \u0111\u01b0\u1ee3c minh h\u1ecda b\u1eb1ng \u0111\u01b0\u1eddng li\u1ec1n c\u00f3 \u0111\u1ea7u m\u0169i t\u00ean h\u1edf.<\/li>\n<li><em>M\u1ee5c \u0111\u00edch:<\/em> Ch\u00fang \u0111\u1ea1i di\u1ec7n cho c\u00e1c tin nh\u1eafn \u0111\u01b0\u1ee3c g\u1eedi m\u00e0 kh\u00f4ng c\u1ea7n ch\u1edd ph\u1ea3n h\u1ed3i ngay l\u1eadp t\u1ee9c. C\u00e1c tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 truy\u1ec1n t\u1ea3i c\u00e1c s\u1ef1 ki\u1ec7n ho\u1eb7c t\u00edn hi\u1ec7u b\u00ean trong h\u1ec7 th\u1ed1ng.<\/li>\n<li><em>V\u00ed d\u1ee5:<\/em><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><img alt=\"Lifelines with asynchronous\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/09\/04-lifelines-with-asynchronous-message.png\"\/><\/p>\n<ul>\n<li><strong>Tin nh\u1eafn t\u1ea1o v\u00e0 h\u1ee7y: Qu\u1ea3n l\u00fd c\u00e1c th\u00e0nh vi\u00ean tham gia<\/strong><\/li>\n<\/ul>\n<p>Trong th\u1ebf gi\u1edbi c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, c\u00e1c th\u00e0nh ph\u1ea7n kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3i t\u1ed3n t\u1ea1i su\u1ed1t to\u00e0n b\u1ed9 kho\u1ea3ng th\u1eddi gian t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3. Thay v\u00e0o \u0111\u00f3, c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea1o ra v\u00e0 lo\u1ea1i b\u1ecf m\u1ed9t c\u00e1ch \u0111\u1ed9ng d\u1ef1a tr\u00ean c\u00e1c tin nh\u1eafn trao \u0111\u1ed5i trong tr\u00ecnh t\u1ef1.<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Tin nh\u1eafn t\u1ea1o: S\u1ef1 ra \u0111\u1eddi c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n<\/strong>\n<ul>\n<li><em>T\u1ea1o:<\/em>C\u00e1c tin nh\u1eafn t\u1ea1o ch\u1ecbu tr\u00e1ch nhi\u1ec7m t\u1ea1o ra m\u1ed9t th\u00e0nh ph\u1ea7n m\u1edbi, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ng\u01b0\u1eddi nh\u1eadn, trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1.<\/li>\n<li><em>V\u1ecb tr\u00ed:<\/em>C\u00e1c th\u00e0nh ph\u1ea7n \u0111\u00e3 t\u1ed3n t\u1ea1i ngay t\u1eeb \u0111\u1ea7u c\u1ee7a t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf ph\u00eda tr\u00ean s\u01a1 \u0111\u1ed3. Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t trong qu\u00e1 tr\u00ecnh t\u01b0\u01a1ng t\u00e1c th\u00f4ng qua c\u00e1c l\u1eddi g\u1ecdi t\u1ea1o s\u1ebd \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng \u0111\u1eb7t \u1edf ph\u00eda d\u01b0\u1edbi s\u01a1 \u0111\u1ed3.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>C\u00e1c tin nh\u1eafn t\u1ea1o n\u00e0y \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c minh h\u1ecda c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n m\u1edbi tham gia v\u00e0o tr\u00ecnh t\u1ef1 v\u00e0 tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong t\u01b0\u01a1ng t\u00e1c \u0111ang di\u1ec5n ra, l\u00e0m phong ph\u00fa th\u00eam t\u00ednh \u0111\u1ed9ng c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1.<\/p>\n<p><img alt=\"Lifelines with constructor\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/09\/05-lifelines-with-constructor.png\"\/><\/p>\n<ul>\n<li><strong>Tin nh\u1eafn h\u1ee7y: L\u1eddi t\u1ea1m bi\u1ec7t d\u00e0nh cho c\u00e1c th\u00e0nh ph\u1ea7n<\/strong><\/li>\n<\/ul>\n<p>Trong l\u0129nh v\u1ef1c s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, c\u00e1c tin nh\u1eafn h\u1ee7y th\u1ef1c hi\u1ec7n vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c lo\u1ea1i b\u1ecf ho\u1eb7c &#8220;h\u1ee7y b\u1ecf&#8221; m\u1ed9t th\u00e0nh ph\u1ea7n kh\u1ecfi t\u01b0\u01a1ng t\u00e1c \u0111ang di\u1ec5n ra. Khi m\u1ed9t tin nh\u1eafn h\u1ee7y \u0111\u01b0\u1ee3c g\u1ecdi, n\u00f3 b\u00e1o hi\u1ec7u s\u1ef1 k\u1ebft th\u00fac c\u1ee7a s\u1ef1 tham gia c\u1ee7a th\u00e0nh ph\u1ea7n v\u00e0o tr\u00ecnh t\u1ef1.<\/p>\n<p>Tuy nhi\u00ean, \u0111i\u1ec1u quan tr\u1ecdng c\u1ea7n l\u01b0u \u00fd l\u00e0 c\u00f3 nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf \u0111\u1ec3 ch\u1ec9 ra vi\u1ec7c h\u1ee7y b\u1ecf m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng trong qu\u00e1 tr\u00ecnh t\u01b0\u01a1ng t\u00e1c. C\u00e1c tin nh\u1eafn h\u1ee7y ch\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3 khi vi\u1ec7c h\u1ee7y b\u1ecf \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh &#8220;sau tin nh\u1eafn h\u1ee7y&#8221;. N\u00f3i c\u00e1ch kh\u00e1c, c\u00e1c tin nh\u1eafn h\u1ee7y ch\u1ec9 c\u1ea7n thi\u1ebft khi vi\u1ec7c lo\u1ea1i b\u1ecf m\u1ed9t th\u00e0nh ph\u1ea7n x\u1ea3y ra sau khi th\u1ef1c thi ch\u00ednh tin nh\u1eafn h\u1ee7y \u0111\u00f3.<\/p>\n<p>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cho ph\u00e9p linh ho\u1ea1t trong vi\u1ec7c bi\u1ec3u di\u1ec5n v\u00f2ng \u0111\u1eddi c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c t\u00ecnh hu\u1ed1ng m\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 th\u1ec3 r\u1eddi kh\u1ecfi t\u01b0\u01a1ng t\u00e1c \u1edf nhi\u1ec1u th\u1eddi \u0111i\u1ec3m kh\u00e1c nhau, \u0111\u1ea3m b\u1ea3o h\u00ecnh \u1ea3nh h\u00f3a r\u00f5 r\u00e0ng v\u00e0 linh ho\u1ea1t h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<p><img alt=\"Lifelines with destructor\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/09\/06-lifelines-with-desstructor.png\"\/><\/p>\n<ul>\n<li><strong>Tin nh\u1eafn kh\u00f4ng t\u1ee9c th\u1eddi: Th\u1eddi gian l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng<\/strong><\/li>\n<\/ul>\n<p>Trong l\u0129nh v\u1ef1c s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, c\u00e1c tin nh\u1eafn th\u01b0\u1eddng \u0111\u01b0\u1ee3c coi l\u00e0 t\u1ee9c th\u1eddi, ng\u1ee5 \u00fd r\u1eb1ng ch\u00fang \u0111\u01b0\u1ee3c truy\u1ec1n v\u00e0 nh\u1eadn g\u1ea7n nh\u01b0 ngay l\u1eadp t\u1ee9c, v\u1edbi \u0111\u1ed9 tr\u1ec5 kh\u00f4ng \u0111\u00e1ng k\u1ec3. Nh\u1eefng tin nh\u1eafn n\u00e0y \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t m\u0169i t\u00ean ngang \u0111\u01a1n gi\u1ea3n, g\u1ee3i \u00fd v\u1ec1 vi\u1ec7c giao ti\u1ebfp nhanh ch\u00f3ng gi\u1eefa ng\u01b0\u1eddi g\u1eedi v\u00e0 ng\u01b0\u1eddi nh\u1eadn.<\/p>\n<p>Tuy nhi\u00ean, trong m\u1ed9t s\u1ed1 t\u00ecnh hu\u1ed1ng, vi\u1ec7c truy\u1ec1n \u0111\u1ea1t r\u1eb1ng c\u00f3 m\u1ed9t kho\u1ea3ng th\u1eddi gian \u0111\u00e1ng k\u1ec3 tr\u01b0\u1edbc khi ng\u01b0\u1eddi nh\u1eadn th\u1ef1c s\u1ef1 nh\u1eadn \u0111\u01b0\u1ee3c tin nh\u1eafn l\u00e0 c\u1ea7n thi\u1ebft. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0y, m\u1ed9t d\u1ea5u hi\u1ec7u th\u1ecb gi\u00e1c \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng: m\u1ed9t m\u0169i t\u00ean xi\u00ean.<\/p>\n<p>M\u0169i t\u00ean xi\u00ean m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 truy\u1ec1n t\u1ea3i r\u1eb1ng c\u00f3 s\u1ef1 ch\u1eadm tr\u1ec5 \u0111\u00e1ng k\u1ec3 trong vi\u1ec7c giao tin nh\u1eafn \u0111\u1ebfn ng\u01b0\u1eddi nh\u1eadn. C\u00e1ch bi\u1ec3u di\u1ec5n tinh t\u1ebf n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng kh\u00eda c\u1ea1nh th\u1eddi gian c\u1ee7a t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 ch\u00ednh x\u00e1c, n\u00e2ng cao t\u00ednh d\u1ec5 hi\u1ec3u c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 v\u00e0 cung c\u1ea5p m\u1ed9t ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c h\u01a1n v\u1ec1 \u0111\u1ed9ng th\u00e1i th\u1eddi gian c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<p><img alt=\"Lifelines with instantaneous message\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/09\/07-lifelines-with-instantaneous-message.png\"\/><\/p>\n<p>\u00a0<\/p>\n<ul>\n<li><strong>Thanh k\u00edch ho\u1ea1t:<\/strong>C\u00e1c thanh k\u00edch ho\u1ea1t ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt k\u00edch ho\u1ea1t cho th\u1ea5y kho\u1ea3ng th\u1eddi gian m\u00e0 m\u1ed9t \u0111\u01b0\u1eddng \u0111\u1eddi (lifeline) \u0111ang tham gia t\u00edch c\u1ef1c v\u00e0o t\u01b0\u01a1ng t\u00e1c. Ch\u00fang xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng c\u00e1c \u0111\u01b0\u1eddng ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt li\u1ec1n n\u00e9t k\u00e9o d\u00e0i t\u1eeb \u0111\u01b0\u1eddng \u0111\u1ee9t \u0111o\u1ea1n d\u1ecdc c\u1ee7a \u0111\u01b0\u1eddng \u0111\u1eddi. C\u00e1c thanh k\u00edch ho\u1ea1t gi\u00fap h\u00ecnh dung r\u00f5 th\u1eddi gian tham gia c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0o m\u1ed9t t\u01b0\u01a1ng t\u00e1c c\u1ee5 th\u1ec3.<\/li>\n<li><strong>T\u00e2m \u0111i\u1ec3m ki\u1ec3m so\u00e1t:<\/strong>M\u0169i t\u00ean t\u00e2m \u0111i\u1ec3m ki\u1ec3m so\u00e1t l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 th\u1ecb gi\u00e1c d\u00f9ng \u0111\u1ec3 ch\u1ec9 ra lifeline n\u00e0o hi\u1ec7n \u0111ang ki\u1ec3m so\u00e1t t\u01b0\u01a1ng t\u00e1c. N\u00f3 \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch khi m\u00f4 t\u1ea3 c\u00e1c t\u00ecnh hu\u1ed1ng ph\u1ee9c t\u1ea1p li\u00ean quan \u0111\u1ebfn nhi\u1ec1u lifeline.<\/li>\n<li><strong>K\u00fd hi\u1ec7u l\u1eb7p l\u1ea1i: Tin nh\u1eafn l\u1eb7p l\u1ea1i<\/strong><\/li>\n<\/ul>\n<p>Trong l\u0129nh v\u1ef1c s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, k\u00fd hi\u1ec7u l\u1eb7p l\u1ea1i \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c minh h\u1ecda vi\u1ec7c l\u1eb7p l\u1ea1i m\u1ed9t tin nh\u1eafn \u0111\u01b0\u1ee3c g\u1eedi nhi\u1ec1u l\u1ea7n \u0111\u1ebfn c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng nh\u1eadn kh\u00e1c nhau. K\u00fd hi\u1ec7u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch khi m\u00f4 t\u1ea3 c\u00e1c t\u00ecnh hu\u1ed1ng li\u00ean quan \u0111\u1ebfn vi\u1ec7c l\u1eb7p qua m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng.<\/p>\n<p>B\u1ea3n ch\u1ea5t c\u1ee7a k\u00fd hi\u1ec7u l\u1eb7p l\u1ea1i n\u1eb1m \u1edf kh\u1ea3 n\u0103ng ch\u1ec9 ra c\u01a1 s\u1edf c\u1ee7a vi\u1ec7c l\u1eb7p l\u1ea1i b\u00ean trong d\u1ea5u ngo\u1eb7c vu\u00f4ng. V\u00ed d\u1ee5, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng *[for all order lines] \u0111\u1ec3 ch\u1ec9 r\u1eb1ng m\u1ed9t tin nh\u1eafn c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c g\u1eedi l\u1eb7p l\u1ea1i \u0111\u1ebfn t\u1eebng ph\u1ea7n t\u1eed trong t\u1eadp h\u1ee3p &#8220;order lines&#8221;.<\/p>\n<p>B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng k\u00fd hi\u1ec7u l\u1eb7p l\u1ea1i theo c\u00e1ch n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 truy\u1ec1n t\u1ea3i hi\u1ec7u qu\u1ea3 kh\u00e1i ni\u1ec7m l\u1eb7p qua m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c ph\u1ea7n t\u1eed, l\u00e0m n\u1ed5i b\u1eadt t\u00ednh l\u1eb7p l\u1ea1i trong c\u00e1c giao ti\u1ebfp tin nh\u1eafn trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1. K\u00fd hi\u1ec7u n\u00e0y n\u00e2ng cao \u0111\u1ed9 r\u00f5 r\u00e0ng v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a s\u01a1 \u0111\u1ed3, gi\u00fap d\u1ec5 hi\u1ec3u h\u01a1n c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ee9c t\u1ea1p li\u00ean quan \u0111\u1ebfn c\u00e1c h\u00e0nh \u0111\u1ed9ng l\u1eb7p l\u1ea1i.<\/p>\n<p><strong>R\u00e0ng bu\u1ed9c v\u00e0 ch\u00fa th\u00edch:<\/strong>S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 c\u00f3 th\u1ec3 bao g\u1ed3m ghi ch\u00fa, r\u00e0ng bu\u1ed9c v\u00e0 b\u00ecnh lu\u1eadn \u0111\u1ec3 cung c\u1ea5p th\u00eam th\u00f4ng tin v\u00e0 b\u1ed1i c\u1ea3nh gi\u00fap hi\u1ec3u r\u00f5 h\u01a1n.<\/p>\n<h2>T\u1ea1o m\u1ed9t s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 hi\u1ec7u qu\u1ea3<\/h2>\n<p>\u0110\u1ec3 t\u1ea1o ra m\u1ed9t s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 hi\u1ec7u qu\u1ea3, h\u00e3y c\u00e2n nh\u1eafc c\u00e1c nguy\u00ean t\u1eafc t\u1ed1t nh\u1ea5t sau:<\/p>\n<ol>\n<li><strong>Gi\u1eef \u0111\u01a1n gi\u1ea3n:<\/strong>Tr\u00e1nh s\u1ef1 ph\u1ee9c t\u1ea1p kh\u00f4ng c\u1ea7n thi\u1ebft. T\u1eadp trung v\u00e0o vi\u1ec7c minh h\u1ecda c\u00e1c t\u01b0\u01a1ng t\u00e1c v\u00e0 m\u1ed1i quan h\u1ec7 ch\u00ednh m\u00e0 kh\u00f4ng l\u00e0m qu\u00e1 t\u1ea3i s\u01a1 \u0111\u1ed3 b\u1eb1ng chi ti\u1ebft d\u01b0 th\u1eeba.<\/li>\n<li><strong>S\u1eed d\u1ee5ng t\u00ean m\u00f4 t\u1ea3:<\/strong> \u0110\u1ea3m b\u1ea3o r\u1eb1ng t\u00ean c\u1ee7a c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng v\u00e0 tin nh\u1eafn l\u00e0 r\u00f5 r\u00e0ng v\u00e0 m\u00f4 t\u1ea3. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea5t k\u1ef3 ai xem x\u00e9t s\u01a1 \u0111\u1ed3 \u0111\u1ec1u c\u00f3 th\u1ec3 hi\u1ec3u b\u1ed1i c\u1ea3nh m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng.<\/li>\n<li><strong>Nh\u00f3m c\u00e1c t\u01b0\u01a1ng t\u00e1c li\u00ean quan:<\/strong> Nh\u00f3m c\u00e1c t\u01b0\u01a1ng t\u00e1c li\u00ean quan l\u1ea1i v\u1edbi nhau v\u00e0 s\u1eed d\u1ee5ng d\u1ea5u ngo\u1eb7c ho\u1eb7c c\u00e1c h\u1ed9p ch\u1ee9a \u0111\u1ec3 bi\u1ec3u di\u1ec5n tr\u1ef1c quan c\u00e1c nh\u00f3m n\u00e0y. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u0103ng t\u00ednh r\u00f5 r\u00e0ng cho s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n.<\/li>\n<li><strong>Ch\u00fa \u00fd \u0111\u1ebfn th\u1ee9 t\u1ef1:<\/strong> Th\u1ee9 t\u1ef1 c\u1ee7a c\u00e1c tin nh\u1eafn ph\u1ea3i ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c th\u1ee9 t\u1ef1 theo th\u1eddi gian c\u1ee7a c\u00e1c t\u01b0\u01a1ng t\u00e1c. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c lu\u1ed3ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>Xem x\u00e9t c\u00e1c nh\u00e1nh thay th\u1ebf:<\/strong> N\u1ebfu h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n c\u00f3 c\u00e1c nh\u00e1nh ho\u1eb7c lu\u1ed3ng thay th\u1ebf, h\u00e3y s\u1eed d\u1ee5ng c\u00e1c \u0111o\u1ea1n k\u1ebft h\u1ee3p (v\u00ed d\u1ee5: alt, opt, loop) \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c t\u00ecnh hu\u1ed1ng n\u00e0y trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1.<\/li>\n<\/ol>\n<h2>S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1: M\u1ed9t v\u00ed d\u1ee5 t\u1eebng b\u01b0\u1edbc<\/h2>\n<p><strong>V\u00ed d\u1ee5: \u0110\u1eb7t h\u00e0ng \u2013 M\u1ed9t chu\u1ed7i h\u00ecnh \u1ea3nh<\/strong><\/p>\n<p>Trong b\u1ed1i c\u1ea3nh c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, h\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 t\u00ecnh hu\u1ed1ng &#8220;\u0110\u1eb7t h\u00e0ng&#8221; li\u00ean quan \u0111\u1ebfn ba th\u00e0nh vi\u00ean ch\u00ednh: Kh\u00e1ch h\u00e0ng, \u0110\u01a1n h\u00e0ng v\u00e0 Kho h\u00e0ng. Ngay c\u1ea3 khi kh\u00f4ng s\u1eed d\u1ee5ng k\u00fd hi\u1ec7u ch\u00ednh th\u1ee9c, b\u1ea1n v\u1eabn c\u00f3 th\u1ec3 hi\u1ec3u tr\u1ef1c quan c\u1ed1t truy\u1ec7n \u0111ang di\u1ec5n ra c\u1ee7a t\u01b0\u01a1ng t\u00e1c n\u00e0y:<\/p>\n<p><strong>B\u01b0\u1edbc 1 v\u00e0 2: Kh\u00e1ch h\u00e0ng t\u1ea1o m\u1ed9t \u0111\u01a1n h\u00e0ng<\/strong><\/p>\n<ul>\n<li>Quy tr\u00ecnh b\u1eaft \u0111\u1ea7u v\u1edbi Kh\u00e1ch h\u00e0ng kh\u1edfi \u0111\u1ed9ng qu\u00e1 tr\u00ecnh b\u1eb1ng c\u00e1ch t\u1ea1o m\u1ed9t \u0110\u01a1n h\u00e0ng m\u1edbi. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u.<\/li>\n<\/ul>\n<p><strong>B\u01b0\u1edbc 3: Kh\u00e1ch h\u00e0ng th\u00eam c\u00e1c m\u1eb7t h\u00e0ng v\u00e0o \u0111\u01a1n h\u00e0ng<\/strong><\/p>\n<ul>\n<li>Sau khi t\u1ea1o \u0111\u01a1n h\u00e0ng, Kh\u00e1ch h\u00e0ng ti\u1ebfp t\u1ee5c th\u00eam c\u00e1c m\u1eb7t h\u00e0ng v\u00e0o \u0110\u01a1n h\u00e0ng m\u1edbi \u0111\u01b0\u1ee3c t\u1ea1o, ph\u1ea3n \u00e1nh s\u1ef1 l\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m c\u1ee7a kh\u00e1ch h\u00e0ng.<\/li>\n<\/ul>\n<p><strong>B\u01b0\u1edbc 4 v\u00e0 5: Ki\u1ec3m tra kh\u1ea3 n\u0103ng s\u1eb5n c\u00f3 trong kho<\/strong><\/p>\n<ul>\n<li>M\u1ed7i m\u1eb7t h\u00e0ng trong \u0110\u01a1n h\u00e0ng sau \u0111\u00f3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o qu\u00e1 tr\u00ecnh x\u00e1c minh. C\u00e1c b\u01b0\u1edbc 4 v\u00e0 5 \u0111\u1ea1i di\u1ec7n cho vi\u1ec7c \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng s\u1eb5n c\u00f3 c\u1ee7a s\u1ea3n ph\u1ea9m trong Kho h\u00e0ng.<\/li>\n<\/ul>\n<p><strong>B\u01b0\u1edbc 6, 7, 8: Th\u00eam c\u00e1c s\u1ea3n ph\u1ea9m s\u1eb5n c\u00f3 v\u00e0o \u0111\u01a1n h\u00e0ng<\/strong><\/p>\n<ul>\n<li>C\u00e1c s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh l\u00e0 s\u1eb5n c\u00f3, theo k\u1ebft qu\u1ea3 \u1edf c\u00e1c b\u01b0\u1edbc 4 v\u00e0 5, sau \u0111\u00f3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o \u0110\u01a1n h\u00e0ng c\u1ee7a Kh\u00e1ch h\u00e0ng. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y vi\u1ec7c t\u00edch h\u1ee3p s\u1ea3n ph\u1ea9m th\u00e0nh c\u00f4ng.<\/li>\n<\/ul>\n<p><strong>B\u01b0\u1edbc 9: Tr\u1edf l\u1ea1i<\/strong><\/p>\n<ul>\n<li>T\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, c\u00f3 th\u1ec3 s\u1ebd quay l\u1ea1i tr\u1ea1ng th\u00e1i tr\u01b0\u1edbc \u0111\u00f3 ho\u1eb7c ti\u1ebfp t\u1ee5c t\u01b0\u01a1ng t\u00e1c, t\u00f9y thu\u1ed9c v\u00e0o logic v\u00e0 y\u00eau c\u1ea7u c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<p><strong>B\u01b0\u1edbc 10 v\u00e0 11: L\u01b0u v\u00e0 h\u1ee7y b\u1ecf \u0111\u01a1n h\u00e0ng<\/strong><\/p>\n<ul>\n<li>\u1ede giai \u0111o\u1ea1n cu\u1ed1i c\u1ee7a t\u01b0\u01a1ng t\u00e1c n\u00e0y, h\u1ec7 th\u1ed1ng th\u1ef1c hi\u1ec7n hai h\u00e0nh \u0111\u1ed9ng quan tr\u1ecdng: l\u01b0u l\u1ea1i \u0110\u01a1n h\u00e0ng (d\u01b0\u1eddng nh\u01b0 \u0111\u1ec3 l\u01b0u tr\u1eef h\u1ed3 s\u01a1) v\u00e0 sau \u0111\u00f3 h\u1ee7y b\u1ecf \u0110\u01a1n h\u00e0ng, c\u00f3 th\u1ec3 sau khi \u0111\u00e3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd v\u00e0 ho\u00e0n th\u00e0nh.<\/li>\n<\/ul>\n<p>S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 &#8220;\u0110\u1eb7t h\u00e0ng&#8221; n\u00e0y m\u00f4 t\u1ea3 tr\u1ef1c quan lu\u1ed3ng s\u1ef1 ki\u1ec7n v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa Kh\u00e1ch h\u00e0ng, \u0110\u01a1n h\u00e0ng v\u00e0 Kho h\u00e0ng. N\u00f3 minh h\u1ecda c\u00e1ch c\u00e1c s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 tr\u1edf th\u00e0nh c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd \u0111\u1ec3 ghi l\u1ea1i c\u00e1c \u0111\u1ed9ng th\u00e1i c\u1ee7a c\u00e1c qu\u00e1 tr\u00ecnh th\u1ef1c t\u1ebf m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng v\u00e0 tr\u1ef1c quan.<\/p>\n<p><img alt=\"Sequence Diagram example\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/09\/08-sequence-diagram-example.png\"\/><\/p>\n<p>\u00a0<\/p>\n<p id=\"RlSGEmy\"><strong>C\u00e1c \u0111o\u1ea1n tu\u1ea7n t\u1ef1: Bi\u1ec3u di\u1ec5n s\u1ef1 ph\u1ee9c t\u1ea1p trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML<\/strong><\/p>\n<div class=\"flex-1 overflow-hidden\">\n<div class=\"react-scroll-to-bottom--css-blikc-79elbk h-full dark:bg-gray-800\">\n<div class=\"react-scroll-to-bottom--css-blikc-1n7m0yu\">\n<div class=\"flex flex-col text-sm dark:bg-gray-800\">\n<div class=\"group w-full text-token-text-primary border-b border-black\/10 dark:border-gray-900\/50 bg-gray-50 dark:bg-[#444654]\" data-testid=\"conversation-turn-25\">\n<div class=\"p-4 justify-center text-base md:gap-6 md:py-6 m-auto\">\n<div class=\"flex flex-1 gap-4 text-base mx-auto md:gap-6 md:max-w-2xl lg:max-w-[38rem] xl:max-w-3xl }\">\n<div class=\"relative flex w-[calc(100%-50px)] flex-col gap-1 md:gap-3 lg:w-[calc(100%-115px)]\">\n<div class=\"flex flex-grow flex-col gap-3 max-w-full\">\n<div class=\"min-h-[20px] flex flex-col items-start gap-3 overflow-x-auto whitespace-pre-wrap break-words\">\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<p>Trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 UML, kh\u00e1i ni\u1ec7m v\u1ec1 c\u00e1c \u0111o\u1ea1n k\u1ebft h\u1ee3p \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u01a1 ch\u1ebf m\u1ea1nh m\u1ebd \u0111\u1ec3 minh h\u1ecda c\u00e1c t\u00ecnh hu\u1ed1ng ph\u1ee9c t\u1ea1p bao g\u1ed3m v\u00f2ng l\u1eb7p, nh\u00e1nh v\u00e0 c\u00e1c \u0111\u01b0\u1eddng \u0111i thay th\u1ebf. M\u1ed9t \u0111o\u1ea1n k\u1ebft h\u1ee3p th\u1ef1c ch\u1ea5t l\u00e0 m\u1ed9t h\u1ed9p ch\u1ee9a bao g\u1ed3m m\u1ed9t ho\u1eb7c nhi\u1ec1u to\u00e1n h\u1ea1ng t\u01b0\u01a1ng t\u00e1c. C\u00e1c to\u00e1n h\u1ea1ng t\u01b0\u01a1ng t\u00e1c n\u00e0y, theo th\u1ee9 t\u1ef1, bao g\u1ed3m c\u00e1c tin nh\u1eafn, c\u00e1c s\u1eed d\u1ee5ng t\u01b0\u01a1ng t\u00e1c, ho\u1eb7c th\u1eadm ch\u00ed l\u00e0 c\u00e1c \u0111o\u1ea1n k\u1ebft h\u1ee3p kh\u00e1c.<\/p>\n<p><strong>Bi\u1ec3u di\u1ec5n c\u00e1c \u0111o\u1ea1n tu\u1ea7n t\u1ef1<\/strong><\/p>\n<p>Trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, m\u1ed9t \u0111o\u1ea1n tu\u1ea7n t\u1ef1 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n tr\u1ef1c quan d\u01b0\u1edbi d\u1ea1ng m\u1ed9t h\u1ed9p \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 &#8220;\u0111o\u1ea1n k\u1ebft h\u1ee3p&#8221;. H\u1ed9p n\u00e0y bao quanh m\u1ed9t ph\u1ea7n c\u1ee5 th\u1ec3 c\u1ee7a c\u00e1c t\u01b0\u01a1ng t\u00e1c x\u1ea3y ra trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, t\u1eeb \u0111\u00f3 t\u1ea1o ra ranh gi\u1edbi r\u00f5 r\u00e0ng cho c\u00e1c t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c bao b\u1ecdc.<\/p>\n<p><strong>To\u00e1n t\u1eed \u0111o\u1ea1n: X\u00e1c \u0111\u1ecbnh b\u1ea3n ch\u1ea5t c\u1ee7a t\u01b0\u01a1ng t\u00e1c<\/strong><\/p>\n<p>\u1ede trung t\u00e2m c\u1ee7a c\u00e1c \u0111o\u1ea1n k\u1ebft h\u1ee3p l\u00e0 to\u00e1n t\u1eed \u0111o\u1ea1n, \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf g\u00f3c tr\u00ean b\u00ean tr\u00e1i c\u1ee7a \u0111o\u1ea1n. To\u00e1n t\u1eed n\u00e0y \u0111\u00f3ng vai tr\u00f2 l\u00e0 ch\u1ec9 b\u00e1o ch\u00ednh, x\u00e1c \u0111\u1ecbnh lo\u1ea1i ho\u1eb7c b\u1ea3n ch\u1ea5t c\u1ee7a \u0111o\u1ea1n. C\u00e1c lo\u1ea1i \u0111o\u1ea1n m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng bao g\u1ed3m:<\/p>\n<ol>\n<li><strong>ref:<\/strong> \u0110\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ed9t t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u00ean s\u01a1 \u0111\u1ed3 kh\u00e1c. V\u1ec1 c\u01a1 b\u1ea3n, n\u00f3 tham chi\u1ebfu \u0111\u1ebfn m\u1ed9t t\u01b0\u01a1ng t\u00e1c b\u00ean ngo\u00e0i, gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c bi\u1ec3u di\u1ec5n c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ee9c t\u1ea1p trong s\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1.<\/li>\n<li><strong>assert:<\/strong> Ch\u1ec9 ra m\u1ed9t kh\u1eb3ng \u0111\u1ecbnh ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ecfa m\u00e3n trong c\u00e1c t\u01b0\u01a1ng t\u00e1c bao quanh. N\u00f3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng trong chu\u1ed7i c\u00e1c s\u1ef1 ki\u1ec7n.<\/li>\n<li><strong>loop:<\/strong> Ch\u1ec9 ra m\u1ed9t v\u00f2ng l\u1eb7p, g\u1ee3i \u00fd r\u1eb1ng c\u00e1c t\u01b0\u01a1ng t\u00e1c bao quanh n\u00ean \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n l\u1eb7p l\u1ea1i theo m\u1ed9t s\u1ed1 l\u1ea7n nh\u1ea5t \u0111\u1ecbnh. N\u00f3 th\u1ec3 hi\u1ec7n h\u00e0nh vi l\u1eb7p l\u1ea1i trong chu\u1ed7i.<\/li>\n<li><strong>break:<\/strong> Ch\u1ec9 ra s\u1ef1 ng\u1eaft qu\u00e3ng trong chu\u1ed7i, th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 tho\u00e1t kh\u1ecfi m\u1ed9t v\u00f2ng l\u1eb7p ho\u1eb7c k\u1ebft th\u00fac s\u1edbm m\u1ed9t qu\u00e1 tr\u00ecnh l\u1eb7p l\u1ea1i.<\/li>\n<li><strong>alt:<\/strong> \u0110\u1ea1i di\u1ec7n cho m\u1ed9t nh\u00e1nh thay th\u1ebf ho\u1eb7c nh\u00e1nh \u0111i\u1ec1u ki\u1ec7n. N\u00f3 cho ph\u00e9p b\u1ea1n m\u00f4 t\u1ea3 nhi\u1ec1u t\u00ecnh hu\u1ed1ng kh\u00e1c nhau d\u1ef1a tr\u00ean c\u00e1c \u0111i\u1ec1u ki\u1ec7n ho\u1eb7c quy\u1ebft \u0111\u1ecbnh c\u1ee5 th\u1ec3.<\/li>\n<li><strong>opt:<\/strong> \u0110\u1ea1i di\u1ec7n cho \u201ct\u00f9y ch\u1ecdn\u201d, ng\u1ee5 \u00fd r\u1eb1ng c\u00e1c t\u01b0\u01a1ng t\u00e1c trong \u0111o\u1ea1n c\u00f3 th\u1ec3 x\u1ea3y ra ho\u1eb7c kh\u00f4ng x\u1ea3y ra, t\u00f9y thu\u1ed9c v\u00e0o m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh.<\/li>\n<li><strong>neg:<\/strong> Truy\u1ec1n \u0111\u1ea1t m\u1ed9t \u0111i\u1ec1u ki\u1ec7n ti\u00eau c\u1ef1c ho\u1eb7c m\u1ed9t t\u00ecnh hu\u1ed1ng t\u01b0\u01a1ng t\u00e1c kh\u00f4ng h\u1ee3p l\u1ec7. N\u00f3 nh\u1ea5n m\u1ea1nh c\u00e1c t\u00ecnh hu\u1ed1ng m\u00e0 m\u1ed9t s\u1ed1 t\u01b0\u01a1ng t\u00e1c kh\u00f4ng n\u00ean x\u1ea3y ra.<\/li>\n<li><strong>sd:<\/strong> \u0110\u1ea1i di\u1ec7n cho m\u1ed9t s\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1 b\u00ean trong m\u1ed9t s\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1, cho ph\u00e9p m\u1ee9c \u0111\u1ed9 tr\u1eebu t\u01b0\u1ee3ng cao h\u01a1n khi x\u1eed l\u00fd c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ee9c t\u1ea1p.<\/li>\n<\/ol>\n<p>C\u00e1c to\u00e1n t\u1eed \u0111o\u1ea1n n\u00e0y gi\u00fap b\u1ea1n m\u00f4 t\u1ea3 ch\u00ednh x\u00e1c c\u00e1c chu\u1ed7i s\u1ef1 ki\u1ec7n ph\u1ee9c t\u1ea1p, c\u00e1c \u0111i\u1ec3m quy\u1ebft \u0111\u1ecbnh v\u00e0 v\u00f2ng l\u1eb7p trong s\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1 UML c\u1ee7a b\u1ea1n. Ch\u00fang v\u00f4 c\u00f9ng qu\u00fd gi\u00e1 trong vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a c\u00e1c quy tr\u00ecnh th\u1ef1c t\u1ebf v\u00e0 h\u00e0nh vi h\u1ec7 th\u1ed1ng v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 r\u00f5 r\u00e0ng.<\/p>\n<\/div>\n<div class=\"flex-1 overflow-hidden\">\n<div class=\"react-scroll-to-bottom--css-blikc-79elbk h-full dark:bg-gray-800\">\n<div class=\"react-scroll-to-bottom--css-blikc-1n7m0yu\">\n<div class=\"flex flex-col text-sm dark:bg-gray-800\">\n<div class=\"group w-full text-token-text-primary border-b border-black\/10 dark:border-gray-900\/50 bg-gray-50 dark:bg-[#444654]\" data-testid=\"conversation-turn-27\">\n<div class=\"p-4 justify-center text-base md:gap-6 md:py-6 m-auto\">\n<div class=\"flex flex-1 gap-4 text-base mx-auto md:gap-6 md:max-w-2xl lg:max-w-[38rem] xl:max-w-3xl }\">\n<div class=\"relative flex w-[calc(100%-50px)] flex-col gap-1 md:gap-3 lg:w-[calc(100%-115px)]\">\n<div class=\"flex flex-grow flex-col gap-3 max-w-full\">\n<div class=\"min-h-[20px] flex flex-col items-start gap-3 overflow-x-auto whitespace-pre-wrap break-words\">\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<p><strong>V\u00ed d\u1ee5: T\u00ecnh hu\u1ed1ng \u0110\u1eb7t h\u00e0ng \u2013 Tr\u1ef1c quan h\u00f3a c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ee9c t\u1ea1p<\/strong><\/p>\n<p>Trong v\u00ed d\u1ee5 minh h\u1ecda n\u00e0y v\u1ec1 s\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1, ch\u00fang ta s\u1ebd \u0111i s\u00e2u v\u00e0o quy tr\u00ecnh m\u1ed9t th\u00e0nh vi\u00ean \u0111\u1eb7t h\u00e0ng tr\u1ef1c tuy\u1ebfn. T\u00ecnh hu\u1ed1ng n\u00e0y bao g\u1ed3m nhi\u1ec1u t\u01b0\u01a1ng t\u00e1c v\u00e0 \u0111i\u1ec1u ki\u1ec7n, bao g\u1ed3m vi\u1ec7c l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng th\u1ee9c giao h\u00e0ng v\u00e0 th\u00f4ng b\u00e1o x\u00e1c nh\u1eadn t\u00f9y ch\u1ecdn. Qua s\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1 n\u00e0y, ch\u00fang t\u00f4i mong mu\u1ed1n cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n r\u00f5 r\u00e0ng v\u1ec1 nh\u1eefng chi ti\u1ebft ph\u1ee9c t\u1ea1p li\u00ean quan:<\/p>\n<p><strong>1. Kh\u1edfi t\u1ea1o:<\/strong><\/p>\n<ul>\n<li>Chu\u1ed7i b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c th\u00e0nh vi\u00ean kh\u1edfi \u0111\u1ed9ng qu\u00e1 tr\u00ecnh \u0111\u1eb7t h\u00e0ng tr\u1ef1c tuy\u1ebfn.<\/li>\n<\/ul>\n<p><strong>2. T\u1ea1o m\u1ed9t \u0111\u01a1n h\u00e0ng:<\/strong><\/p>\n<ul>\n<li>Th\u00e0nh vi\u00ean ti\u1ebfn h\u00e0nh t\u1ea1o m\u1ed9t \u0111\u01a1n h\u00e0ng trong h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<p><strong>3. Ch\u1ecdn ph\u01b0\u01a1ng th\u1ee9c giao h\u00e0ng:<\/strong><\/p>\n<ul>\n<li>M\u1ed9t \u0111i\u1ec3m quy\u1ebft \u0111\u1ecbnh xu\u1ea5t hi\u1ec7n khi th\u00e0nh vi\u00ean ch\u1ecdn ph\u01b0\u01a1ng th\u1ee9c giao h\u00e0ng \u01b0a th\u00edch. Quy\u1ebft \u0111\u1ecbnh n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o tr\u1ea1ng th\u00e1i c\u1ee7a th\u00e0nh vi\u00ean, c\u00f3 th\u1ec3 l\u00e0 VIP ho\u1eb7c Th\u01b0\u1eddng.<\/li>\n<\/ul>\n<p><strong>4. \u0110\u01b0\u1eddng \u0111i c\u1ee7a th\u00e0nh vi\u00ean VIP:<\/strong><\/p>\n<ul>\n<li>N\u1ebfu th\u00e0nh vi\u00ean \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i l\u00e0 VIP, h\u1ec7 th\u1ed1ng s\u1ebd h\u01b0\u1edbng d\u1eabn \u0111\u01a1n h\u00e0ng \u0111\u01b0\u1ee3c g\u1eedi b\u1eb1ng xe t\u1ea3i, nh\u01b0 \u0111\u01b0\u1ee3c ch\u1ec9 ra b\u1edfi th\u00f4ng \u0111i\u1ec7p \u201cXe t\u1ea3i\u201d.<\/li>\n<\/ul>\n<p><strong>5. \u0110\u01b0\u1eddng \u0111i c\u1ee7a th\u00e0nh vi\u00ean Th\u01b0\u1eddng:<\/strong><\/p>\n<ul>\n<li>Ng\u01b0\u1ee3c l\u1ea1i, \u0111\u1ed1i v\u1edbi th\u00e0nh vi\u00ean th\u01b0\u1eddng, h\u1ec7 th\u1ed1ng ch\u1ecdn ph\u01b0\u01a1ng th\u1ee9c giao h\u00e0ng th\u01b0 th\u01b0\u1eddng, nh\u01b0 \u0111\u01b0\u1ee3c minh h\u1ecda b\u1edfi th\u00f4ng \u0111i\u1ec7p \u201cTh\u01b0 th\u01b0\u1eddng\u201d.<\/li>\n<\/ul>\n<p><strong>6. Ki\u1ec3m tra th\u00f4ng b\u00e1o t\u00f9y ch\u1ecdn:<\/strong><\/p>\n<ul>\n<li>Chu\u1ed7i sau \u0111\u00f3 ki\u1ec3m tra xem th\u00e0nh vi\u00ean c\u00f3 ch\u1ecdn nh\u1eadn th\u00f4ng b\u00e1o x\u00e1c nh\u1eadn hay kh\u00f4ng. \u0110i\u1ec1u n\u00e0y \u0111\u1ea1i di\u1ec7n cho m\u1ed9t t\u00ednh n\u0103ng t\u00f9y ch\u1ecdn d\u1ef1a tr\u00ean l\u1ef1a ch\u1ecdn c\u1ee7a th\u00e0nh vi\u00ean trong qu\u00e1 tr\u00ecnh \u0111\u1eb7t h\u00e0ng.<\/li>\n<\/ul>\n<p><strong>7. G\u1eedi th\u00f4ng b\u00e1o:<\/strong><\/p>\n<ul>\n<li>N\u1ebfu th\u00e0nh vi\u00ean th\u1ef1c s\u1ef1 \u0111\u00e3 ch\u1ecdn nh\u1eadn th\u00f4ng b\u00e1o, h\u1ec7 th\u1ed1ng s\u1ebd ti\u1ebfn h\u00e0nh g\u1eedi th\u00f4ng b\u00e1o x\u00e1c nh\u1eadn \u0111\u1ebfn th\u00e0nh vi\u00ean.<\/li>\n<\/ul>\n<p><strong>8. Ho\u00e0n t\u1ea5t \u0111\u01a1n h\u00e0ng:<\/strong><\/p>\n<ul>\n<li>D\u00e3y tr\u00ecnh t\u1ef1 k\u1ebft th\u00fac b\u1eb1ng vi\u1ec7c ho\u00e0n t\u1ea5t th\u00e0nh c\u00f4ng qu\u00e1 tr\u00ecnh \u0111\u1eb7t h\u00e0ng, cho th\u1ea5y y\u00eau c\u1ea7u c\u1ee7a th\u00e0nh vi\u00ean \u0111\u00e3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd v\u00e0 \u0111\u01a1n h\u00e0ng s\u1ebd \u0111\u01b0\u1ee3c giao theo tr\u1ea1ng th\u00e1i v\u00e0 s\u1edf th\u00edch c\u1ee7a h\u1ecd.<\/li>\n<\/ul>\n<p>Th\u00f4ng qua s\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1 n\u00e0y, c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ee9c t\u1ea1p li\u00ean quan \u0111\u1ebfn k\u1ecbch b\u1ea3n &#8220;\u0110\u1eb7t h\u00e0ng&#8221; \u0111\u01b0\u1ee3c tr\u1ef1c quan h\u00f3a m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. N\u00f3 l\u00e0m n\u1ed5i b\u1eadt c\u00e1c \u0111i\u1ec3m ra quy\u1ebft \u0111\u1ecbnh, t\u00ednh \u0111i\u1ec1u ki\u1ec7n d\u1ef1a tr\u00ean tr\u1ea1ng th\u00e1i th\u00e0nh vi\u00ean v\u00e0 t\u00ednh t\u00f9y ch\u1ecdn c\u1ee7a th\u00f4ng b\u00e1o, gi\u00fap hi\u1ec3u to\u00e0n di\u1ec7n h\u01a1n v\u1ec1 quy tr\u00ecnh \u0111\u1eb7t h\u00e0ng tr\u1ef1c tuy\u1ebfn.<\/p>\n<p><img alt=\"Sequence Diagram example\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/09\/1_09-sequence-diagram-example.png\"\/><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>K\u1ebft lu\u1eadn<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Sequence_diagram\">S\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1<\/a>l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, gi\u00fap c\u00e1c \u0111\u1ed9i ng\u0169 tr\u1ef1c quan h\u00f3a v\u00e0 ghi l\u1ea1i c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ee9c t\u1ea1p trong m\u1ed9t h\u1ec7 th\u1ed1ng. B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 c\u00e1c nguy\u00ean t\u1eafc t\u1ed1t nh\u1ea5t v\u00e0 t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 r\u00f5 r\u00e0ng, s\u00fac t\u00edch, c\u00e1c chuy\u00ean gia ph\u1ea7n m\u1ec1m c\u00f3 th\u1ec3 n\u00e2ng cao kh\u1ea3 n\u0103ng giao ti\u1ebfp, c\u1ea3i thi\u1ec7n thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng v\u00e0 r\u00fat ng\u1eafn quy tr\u00ecnh ph\u00e1t tri\u1ec3n. V\u1edbi m\u1ed9t s\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1ed1t, c\u00e1c b\u00ean li\u00ean quan c\u00f3 th\u1ec3 hi\u1ec3u s\u00e2u s\u1eafc h\u01a1n v\u1ec1 h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u th\u1ed1ng nh\u1ea5t v\u1ec1 c\u00e1c t\u01b0\u01a1ng t\u00e1c trong h\u1ec7 th\u1ed1ng.<\/p>\n<h2>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<ol>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/learning\/handbooks\/software-design-handbook\/sequence-diagram.jsp\">S\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1<\/a><\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-sequence-diagram\/\">S\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1 l\u00e0 g\u00ec?<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Gi\u1edbi thi\u1ec7u Trong l\u0129nh v\u1ef1c ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, giao ti\u1ebfp v\u00e0 h\u1ee3p t\u00e1c hi\u1ec7u qu\u1ea3 l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng nh\u1ea5t. C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, nh\u00e0 thi\u1ebft k\u1ebf v\u00e0 c\u00e1c b\u00ean li\u00ean quan ph\u1ea3i ph\u1ed1i h\u1ee3p m\u1ed9t c\u00e1ch tr\u01a1n tru \u0111\u1ec3 t\u1ea1o ra c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m m\u1ea1nh m\u1ebd v\u00e0 hi\u1ec7u qu\u1ea3. M\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd nh\u1ea5t \u0111\u1ec3 tr\u1ef1c quan h\u00f3a v\u00e0 t\u00e0i li\u1ec7u h\u00f3a c\u00e1c t\u01b0\u01a1ng t\u00e1c n\u00e0y l\u00e0 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u s\u00e2u v\u1ec1 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, kh\u00e1m ph\u00e1 m\u1ee5c \u0111\u00edch, c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed1t nh\u1ea5t \u0111\u1ec3 t\u1ea1o ra ch\u00fang. S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 g\u00ec? S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda v\u1ec1 c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u00e0nh ph\u1ea7n kh\u00e1c nhau trong m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh. N\u00f3 cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft v\u1ec1 c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau giao ti\u1ebfp v\u1edbi nhau \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ed9t m\u1ee5c ti\u00eau c\u1ee5 th\u1ec3 ho\u1eb7c th\u1ef1c hi\u1ec7n m\u1ed9t ch\u1ee9c n\u0103ng nh\u1ea5t \u0111\u1ecbnh. S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML) v\u00e0 \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, ki\u1ebfn tr\u00fac s\u01b0 v\u00e0 c\u00e1c b\u00ean li\u00ean quan kh\u00e1c. C\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 \u0110\u01b0\u1eddng s\u1ed1ng:C\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng \u0111\u1ea1i di\u1ec7n cho c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u1ef1c th\u1ec3 tham gia v\u00e0o t\u01b0\u01a1ng t\u00e1c. Ch\u00fang c\u00f3 th\u1ec3 l\u00e0 c\u00e1c l\u1edbp, ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c th\u00e0nh ph\u1ea7n. M\u1ed7i \u0111\u01b0\u1eddng s\u1ed1ng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng \u0111\u1ee9t \u0111o\u1ea1n th\u1eb3ng \u0111\u1ee9ng, v\u00e0 \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi d\u1ef1a tr\u00ean m\u1ee9c \u0111\u1ed9 tham gia v\u00e0o chu\u1ed7i s\u1ef1 ki\u1ec7n. \u00a0 Tin nh\u1eafn:C\u00e1c tin nh\u1eafn l\u00e0 c\u00e1c h\u00e0nh \u0111\u1ed9ng ho\u1eb7c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng. Ch\u00fang \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng c\u00e1c m\u0169i t\u00ean n\u1ed1i c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng. C\u00e1c tin nh\u1eafn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh nhi\u1ec1u lo\u1ea1i kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 tin nh\u1eafn \u0111\u1ed3ng b\u1ed9, tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9, tin nh\u1eafn t\u1ef1 th\u00e2n v\u00e0 tin nh\u1eafn tr\u1ea3 v\u1ec1, m\u1ed7i lo\u1ea1i th\u1ec3 hi\u1ec7n m\u1ed9t kh\u00eda c\u1ea1nh kh\u00e1c nhau c\u1ee7a t\u01b0\u01a1ng t\u00e1c. Trong l\u0129nh v\u1ef1c s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, ki\u1ec3u \u0111\u01b0\u1eddng v\u00e0 ki\u1ec3u \u0111\u1ea7u m\u0169i t\u00ean truy\u1ec1n t\u1ea3i th\u00f4ng tin quan tr\u1ecdng v\u1ec1 b\u1ea3n ch\u1ea5t c\u1ee7a c\u00e1c tin nh\u1eafn \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng: Tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 (th\u01b0\u1eddng l\u00e0 l\u1eddi g\u1ecdi thao t\u00e1c) Bi\u1ec3u di\u1ec5n: C\u00e1c tin nh\u1eafn n\u00e0y \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng li\u1ec1n c\u00f3 \u0111\u1ea7u m\u0169i t\u00ean \u0111\u1ea7y. M\u1ee5c \u0111\u00edch: C\u00e1c tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 bi\u1ec3u th\u1ecb giao ti\u1ebfp th\u01b0\u1eddng xuy\u00ean gi\u1eefa ng\u01b0\u1eddi g\u1eedi v\u00e0 ng\u01b0\u1eddi nh\u1eadn, th\u01b0\u1eddng th\u1ec3 hi\u1ec7n vi\u1ec7c g\u1ecdi th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c ho\u1eb7c l\u1eddi g\u1ecdi ph\u01b0\u01a1ng th\u1ee9c b\u00ean trong h\u1ec7 th\u1ed1ng. V\u00ed d\u1ee5: \u00a0 Tin nh\u1eafn tr\u1ea3 v\u1ec1 Bi\u1ec3u di\u1ec5n: C\u00e1c tin nh\u1eafn tr\u1ea3 v\u1ec1 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng \u0111\u01b0\u1eddng \u0111\u1ee9t \u0111o\u1ea1n v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean h\u1edf. M\u1ee5c \u0111\u00edch: C\u00e1c tin nh\u1eafn n\u00e0y bi\u1ec3u th\u1ecb vi\u1ec7c tr\u1ea3 l\u1ea1i quy\u1ec1n ki\u1ec3m so\u00e1t ho\u1eb7c th\u00f4ng tin t\u1eeb ng\u01b0\u1eddi nh\u1eadn v\u1ec1 ng\u01b0\u1eddi g\u1eedi. Ch\u00fang th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n sau m\u1ed9t tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 tr\u01b0\u1edbc \u0111\u00f3. V\u00ed d\u1ee5: Tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9 Bi\u1ec3u di\u1ec5n: C\u00e1c tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9 \u0111\u01b0\u1ee3c minh h\u1ecda b\u1eb1ng \u0111\u01b0\u1eddng li\u1ec1n c\u00f3 \u0111\u1ea7u m\u0169i t\u00ean h\u1edf. M\u1ee5c \u0111\u00edch: Ch\u00fang \u0111\u1ea1i di\u1ec7n cho c\u00e1c tin nh\u1eafn \u0111\u01b0\u1ee3c g\u1eedi m\u00e0 kh\u00f4ng c\u1ea7n ch\u1edd ph\u1ea3n h\u1ed3i ngay l\u1eadp t\u1ee9c. C\u00e1c tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 truy\u1ec1n t\u1ea3i c\u00e1c s\u1ef1 ki\u1ec7n ho\u1eb7c t\u00edn hi\u1ec7u b\u00ean trong h\u1ec7 th\u1ed1ng. V\u00ed d\u1ee5: Tin nh\u1eafn t\u1ea1o v\u00e0 h\u1ee7y: Qu\u1ea3n l\u00fd c\u00e1c th\u00e0nh vi\u00ean tham gia Trong th\u1ebf gi\u1edbi c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, c\u00e1c th\u00e0nh ph\u1ea7n kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3i t\u1ed3n t\u1ea1i su\u1ed1t to\u00e0n b\u1ed9 kho\u1ea3ng th\u1eddi gian t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3. Thay v\u00e0o \u0111\u00f3, c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea1o ra v\u00e0 lo\u1ea1i b\u1ecf m\u1ed9t c\u00e1ch \u0111\u1ed9ng d\u1ef1a tr\u00ean c\u00e1c tin nh\u1eafn trao \u0111\u1ed5i trong tr\u00ecnh t\u1ef1. Tin nh\u1eafn t\u1ea1o: S\u1ef1 ra \u0111\u1eddi c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n T\u1ea1o:C\u00e1c tin nh\u1eafn t\u1ea1o ch\u1ecbu tr\u00e1ch nhi\u1ec7m t\u1ea1o ra m\u1ed9t th\u00e0nh ph\u1ea7n m\u1edbi, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ng\u01b0\u1eddi nh\u1eadn, trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1. V\u1ecb tr\u00ed:C\u00e1c th\u00e0nh ph\u1ea7n \u0111\u00e3 t\u1ed3n t\u1ea1i ngay t\u1eeb \u0111\u1ea7u c\u1ee7a t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf ph\u00eda tr\u00ean s\u01a1 \u0111\u1ed3. Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t trong qu\u00e1 tr\u00ecnh t\u01b0\u01a1ng t\u00e1c th\u00f4ng qua c\u00e1c l\u1eddi g\u1ecdi t\u1ea1o s\u1ebd \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng \u0111\u1eb7t \u1edf ph\u00eda d\u01b0\u1edbi s\u01a1 \u0111\u1ed3. C\u00e1c tin nh\u1eafn t\u1ea1o n\u00e0y \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c minh h\u1ecda c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n m\u1edbi tham gia v\u00e0o tr\u00ecnh t\u1ef1 v\u00e0 tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong t\u01b0\u01a1ng t\u00e1c \u0111ang di\u1ec5n ra, l\u00e0m phong ph\u00fa th\u00eam t\u00ednh \u0111\u1ed9ng c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1. Tin nh\u1eafn h\u1ee7y: L\u1eddi t\u1ea1m bi\u1ec7t d\u00e0nh cho c\u00e1c th\u00e0nh ph\u1ea7n Trong l\u0129nh v\u1ef1c s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, c\u00e1c tin nh\u1eafn h\u1ee7y th\u1ef1c hi\u1ec7n vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c lo\u1ea1i b\u1ecf ho\u1eb7c &#8220;h\u1ee7y b\u1ecf&#8221; m\u1ed9t th\u00e0nh ph\u1ea7n kh\u1ecfi t\u01b0\u01a1ng t\u00e1c \u0111ang di\u1ec5n ra. Khi m\u1ed9t tin nh\u1eafn h\u1ee7y \u0111\u01b0\u1ee3c g\u1ecdi, n\u00f3 b\u00e1o hi\u1ec7u s\u1ef1 k\u1ebft th\u00fac c\u1ee7a s\u1ef1 tham gia c\u1ee7a th\u00e0nh ph\u1ea7n v\u00e0o tr\u00ecnh t\u1ef1. Tuy nhi\u00ean, \u0111i\u1ec1u quan tr\u1ecdng c\u1ea7n l\u01b0u \u00fd l\u00e0 c\u00f3 nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf \u0111\u1ec3 ch\u1ec9 ra vi\u1ec7c h\u1ee7y b\u1ecf m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng trong qu\u00e1 tr\u00ecnh t\u01b0\u01a1ng t\u00e1c. C\u00e1c tin nh\u1eafn h\u1ee7y ch\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3 khi vi\u1ec7c h\u1ee7y b\u1ecf \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh &#8220;sau tin nh\u1eafn h\u1ee7y&#8221;. N\u00f3i c\u00e1ch kh\u00e1c, c\u00e1c tin nh\u1eafn h\u1ee7y ch\u1ec9 c\u1ea7n thi\u1ebft khi vi\u1ec7c lo\u1ea1i b\u1ecf m\u1ed9t th\u00e0nh ph\u1ea7n x\u1ea3y ra sau khi th\u1ef1c thi ch\u00ednh tin nh\u1eafn h\u1ee7y \u0111\u00f3. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cho ph\u00e9p linh ho\u1ea1t trong vi\u1ec7c bi\u1ec3u di\u1ec5n v\u00f2ng \u0111\u1eddi c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c t\u00ecnh hu\u1ed1ng m\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 th\u1ec3 r\u1eddi kh\u1ecfi t\u01b0\u01a1ng t\u00e1c \u1edf nhi\u1ec1u th\u1eddi \u0111i\u1ec3m kh\u00e1c nhau, \u0111\u1ea3m b\u1ea3o h\u00ecnh \u1ea3nh h\u00f3a r\u00f5 r\u00e0ng v\u00e0 linh ho\u1ea1t h\u00e0nh<a href=\"https:\/\/guides.visual-paradigm.com\/vn\/understanding-sequence-diagrams-a-visual-blueprint-of-software-interactions\/\" rel=\"bookmark\"><span class=\"screen-reader-text\">Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1: B\u1ea3n v\u1ebd tr\u1ef1c quan v\u1ec1 c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ea7n m\u1ec1m<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":6618,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_eb_attr":"","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[7,8],"tags":[],"class_list":["post-6617","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uml","category-visual-modeling"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1: B\u1ea3n v\u1ebd tr\u1ef1c quan v\u1ec1 c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ea7n m\u1ec1m - Visual Paradigm Guides Vietnamese<\/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:\/\/guides.visual-paradigm.com\/vn\/understanding-sequence-diagrams-a-visual-blueprint-of-software-interactions\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1: B\u1ea3n v\u1ebd tr\u1ef1c quan v\u1ec1 c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ea7n m\u1ec1m - Visual Paradigm Guides Vietnamese\" \/>\n<meta property=\"og:description\" content=\"Gi\u1edbi thi\u1ec7u Trong l\u0129nh v\u1ef1c ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, giao ti\u1ebfp v\u00e0 h\u1ee3p t\u00e1c hi\u1ec7u qu\u1ea3 l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng nh\u1ea5t. C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, nh\u00e0 thi\u1ebft k\u1ebf v\u00e0 c\u00e1c b\u00ean li\u00ean quan ph\u1ea3i ph\u1ed1i h\u1ee3p m\u1ed9t c\u00e1ch tr\u01a1n tru \u0111\u1ec3 t\u1ea1o ra c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m m\u1ea1nh m\u1ebd v\u00e0 hi\u1ec7u qu\u1ea3. M\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd nh\u1ea5t \u0111\u1ec3 tr\u1ef1c quan h\u00f3a v\u00e0 t\u00e0i li\u1ec7u h\u00f3a c\u00e1c t\u01b0\u01a1ng t\u00e1c n\u00e0y l\u00e0 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u s\u00e2u v\u1ec1 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, kh\u00e1m ph\u00e1 m\u1ee5c \u0111\u00edch, c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed1t nh\u1ea5t \u0111\u1ec3 t\u1ea1o ra ch\u00fang. S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 g\u00ec? S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda v\u1ec1 c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u00e0nh ph\u1ea7n kh\u00e1c nhau trong m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh. N\u00f3 cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft v\u1ec1 c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau giao ti\u1ebfp v\u1edbi nhau \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ed9t m\u1ee5c ti\u00eau c\u1ee5 th\u1ec3 ho\u1eb7c th\u1ef1c hi\u1ec7n m\u1ed9t ch\u1ee9c n\u0103ng nh\u1ea5t \u0111\u1ecbnh. S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML) v\u00e0 \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, ki\u1ebfn tr\u00fac s\u01b0 v\u00e0 c\u00e1c b\u00ean li\u00ean quan kh\u00e1c. C\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 \u0110\u01b0\u1eddng s\u1ed1ng:C\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng \u0111\u1ea1i di\u1ec7n cho c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u1ef1c th\u1ec3 tham gia v\u00e0o t\u01b0\u01a1ng t\u00e1c. Ch\u00fang c\u00f3 th\u1ec3 l\u00e0 c\u00e1c l\u1edbp, ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c th\u00e0nh ph\u1ea7n. M\u1ed7i \u0111\u01b0\u1eddng s\u1ed1ng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng \u0111\u1ee9t \u0111o\u1ea1n th\u1eb3ng \u0111\u1ee9ng, v\u00e0 \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi d\u1ef1a tr\u00ean m\u1ee9c \u0111\u1ed9 tham gia v\u00e0o chu\u1ed7i s\u1ef1 ki\u1ec7n. \u00a0 Tin nh\u1eafn:C\u00e1c tin nh\u1eafn l\u00e0 c\u00e1c h\u00e0nh \u0111\u1ed9ng ho\u1eb7c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng. Ch\u00fang \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng c\u00e1c m\u0169i t\u00ean n\u1ed1i c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng. C\u00e1c tin nh\u1eafn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh nhi\u1ec1u lo\u1ea1i kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 tin nh\u1eafn \u0111\u1ed3ng b\u1ed9, tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9, tin nh\u1eafn t\u1ef1 th\u00e2n v\u00e0 tin nh\u1eafn tr\u1ea3 v\u1ec1, m\u1ed7i lo\u1ea1i th\u1ec3 hi\u1ec7n m\u1ed9t kh\u00eda c\u1ea1nh kh\u00e1c nhau c\u1ee7a t\u01b0\u01a1ng t\u00e1c. Trong l\u0129nh v\u1ef1c s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, ki\u1ec3u \u0111\u01b0\u1eddng v\u00e0 ki\u1ec3u \u0111\u1ea7u m\u0169i t\u00ean truy\u1ec1n t\u1ea3i th\u00f4ng tin quan tr\u1ecdng v\u1ec1 b\u1ea3n ch\u1ea5t c\u1ee7a c\u00e1c tin nh\u1eafn \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng: Tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 (th\u01b0\u1eddng l\u00e0 l\u1eddi g\u1ecdi thao t\u00e1c) Bi\u1ec3u di\u1ec5n: C\u00e1c tin nh\u1eafn n\u00e0y \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng li\u1ec1n c\u00f3 \u0111\u1ea7u m\u0169i t\u00ean \u0111\u1ea7y. M\u1ee5c \u0111\u00edch: C\u00e1c tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 bi\u1ec3u th\u1ecb giao ti\u1ebfp th\u01b0\u1eddng xuy\u00ean gi\u1eefa ng\u01b0\u1eddi g\u1eedi v\u00e0 ng\u01b0\u1eddi nh\u1eadn, th\u01b0\u1eddng th\u1ec3 hi\u1ec7n vi\u1ec7c g\u1ecdi th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c ho\u1eb7c l\u1eddi g\u1ecdi ph\u01b0\u01a1ng th\u1ee9c b\u00ean trong h\u1ec7 th\u1ed1ng. V\u00ed d\u1ee5: \u00a0 Tin nh\u1eafn tr\u1ea3 v\u1ec1 Bi\u1ec3u di\u1ec5n: C\u00e1c tin nh\u1eafn tr\u1ea3 v\u1ec1 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng \u0111\u01b0\u1eddng \u0111\u1ee9t \u0111o\u1ea1n v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean h\u1edf. M\u1ee5c \u0111\u00edch: C\u00e1c tin nh\u1eafn n\u00e0y bi\u1ec3u th\u1ecb vi\u1ec7c tr\u1ea3 l\u1ea1i quy\u1ec1n ki\u1ec3m so\u00e1t ho\u1eb7c th\u00f4ng tin t\u1eeb ng\u01b0\u1eddi nh\u1eadn v\u1ec1 ng\u01b0\u1eddi g\u1eedi. Ch\u00fang th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n sau m\u1ed9t tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 tr\u01b0\u1edbc \u0111\u00f3. V\u00ed d\u1ee5: Tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9 Bi\u1ec3u di\u1ec5n: C\u00e1c tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9 \u0111\u01b0\u1ee3c minh h\u1ecda b\u1eb1ng \u0111\u01b0\u1eddng li\u1ec1n c\u00f3 \u0111\u1ea7u m\u0169i t\u00ean h\u1edf. M\u1ee5c \u0111\u00edch: Ch\u00fang \u0111\u1ea1i di\u1ec7n cho c\u00e1c tin nh\u1eafn \u0111\u01b0\u1ee3c g\u1eedi m\u00e0 kh\u00f4ng c\u1ea7n ch\u1edd ph\u1ea3n h\u1ed3i ngay l\u1eadp t\u1ee9c. C\u00e1c tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 truy\u1ec1n t\u1ea3i c\u00e1c s\u1ef1 ki\u1ec7n ho\u1eb7c t\u00edn hi\u1ec7u b\u00ean trong h\u1ec7 th\u1ed1ng. V\u00ed d\u1ee5: Tin nh\u1eafn t\u1ea1o v\u00e0 h\u1ee7y: Qu\u1ea3n l\u00fd c\u00e1c th\u00e0nh vi\u00ean tham gia Trong th\u1ebf gi\u1edbi c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, c\u00e1c th\u00e0nh ph\u1ea7n kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3i t\u1ed3n t\u1ea1i su\u1ed1t to\u00e0n b\u1ed9 kho\u1ea3ng th\u1eddi gian t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3. Thay v\u00e0o \u0111\u00f3, c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea1o ra v\u00e0 lo\u1ea1i b\u1ecf m\u1ed9t c\u00e1ch \u0111\u1ed9ng d\u1ef1a tr\u00ean c\u00e1c tin nh\u1eafn trao \u0111\u1ed5i trong tr\u00ecnh t\u1ef1. Tin nh\u1eafn t\u1ea1o: S\u1ef1 ra \u0111\u1eddi c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n T\u1ea1o:C\u00e1c tin nh\u1eafn t\u1ea1o ch\u1ecbu tr\u00e1ch nhi\u1ec7m t\u1ea1o ra m\u1ed9t th\u00e0nh ph\u1ea7n m\u1edbi, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ng\u01b0\u1eddi nh\u1eadn, trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1. V\u1ecb tr\u00ed:C\u00e1c th\u00e0nh ph\u1ea7n \u0111\u00e3 t\u1ed3n t\u1ea1i ngay t\u1eeb \u0111\u1ea7u c\u1ee7a t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf ph\u00eda tr\u00ean s\u01a1 \u0111\u1ed3. Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t trong qu\u00e1 tr\u00ecnh t\u01b0\u01a1ng t\u00e1c th\u00f4ng qua c\u00e1c l\u1eddi g\u1ecdi t\u1ea1o s\u1ebd \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng \u0111\u1eb7t \u1edf ph\u00eda d\u01b0\u1edbi s\u01a1 \u0111\u1ed3. C\u00e1c tin nh\u1eafn t\u1ea1o n\u00e0y \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c minh h\u1ecda c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n m\u1edbi tham gia v\u00e0o tr\u00ecnh t\u1ef1 v\u00e0 tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong t\u01b0\u01a1ng t\u00e1c \u0111ang di\u1ec5n ra, l\u00e0m phong ph\u00fa th\u00eam t\u00ednh \u0111\u1ed9ng c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1. Tin nh\u1eafn h\u1ee7y: L\u1eddi t\u1ea1m bi\u1ec7t d\u00e0nh cho c\u00e1c th\u00e0nh ph\u1ea7n Trong l\u0129nh v\u1ef1c s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, c\u00e1c tin nh\u1eafn h\u1ee7y th\u1ef1c hi\u1ec7n vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c lo\u1ea1i b\u1ecf ho\u1eb7c &#8220;h\u1ee7y b\u1ecf&#8221; m\u1ed9t th\u00e0nh ph\u1ea7n kh\u1ecfi t\u01b0\u01a1ng t\u00e1c \u0111ang di\u1ec5n ra. Khi m\u1ed9t tin nh\u1eafn h\u1ee7y \u0111\u01b0\u1ee3c g\u1ecdi, n\u00f3 b\u00e1o hi\u1ec7u s\u1ef1 k\u1ebft th\u00fac c\u1ee7a s\u1ef1 tham gia c\u1ee7a th\u00e0nh ph\u1ea7n v\u00e0o tr\u00ecnh t\u1ef1. Tuy nhi\u00ean, \u0111i\u1ec1u quan tr\u1ecdng c\u1ea7n l\u01b0u \u00fd l\u00e0 c\u00f3 nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf \u0111\u1ec3 ch\u1ec9 ra vi\u1ec7c h\u1ee7y b\u1ecf m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng trong qu\u00e1 tr\u00ecnh t\u01b0\u01a1ng t\u00e1c. C\u00e1c tin nh\u1eafn h\u1ee7y ch\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3 khi vi\u1ec7c h\u1ee7y b\u1ecf \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh &#8220;sau tin nh\u1eafn h\u1ee7y&#8221;. N\u00f3i c\u00e1ch kh\u00e1c, c\u00e1c tin nh\u1eafn h\u1ee7y ch\u1ec9 c\u1ea7n thi\u1ebft khi vi\u1ec7c lo\u1ea1i b\u1ecf m\u1ed9t th\u00e0nh ph\u1ea7n x\u1ea3y ra sau khi th\u1ef1c thi ch\u00ednh tin nh\u1eafn h\u1ee7y \u0111\u00f3. 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C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, nh\u00e0 thi\u1ebft k\u1ebf v\u00e0 c\u00e1c b\u00ean li\u00ean quan ph\u1ea3i ph\u1ed1i h\u1ee3p m\u1ed9t c\u00e1ch tr\u01a1n tru \u0111\u1ec3 t\u1ea1o ra c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m m\u1ea1nh m\u1ebd v\u00e0 hi\u1ec7u qu\u1ea3. M\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd nh\u1ea5t \u0111\u1ec3 tr\u1ef1c quan h\u00f3a v\u00e0 t\u00e0i li\u1ec7u h\u00f3a c\u00e1c t\u01b0\u01a1ng t\u00e1c n\u00e0y l\u00e0 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u s\u00e2u v\u1ec1 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, kh\u00e1m ph\u00e1 m\u1ee5c \u0111\u00edch, c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed1t nh\u1ea5t \u0111\u1ec3 t\u1ea1o ra ch\u00fang. S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 g\u00ec? S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda v\u1ec1 c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u00e0nh ph\u1ea7n kh\u00e1c nhau trong m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh. N\u00f3 cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft v\u1ec1 c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau giao ti\u1ebfp v\u1edbi nhau \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ed9t m\u1ee5c ti\u00eau c\u1ee5 th\u1ec3 ho\u1eb7c th\u1ef1c hi\u1ec7n m\u1ed9t ch\u1ee9c n\u0103ng nh\u1ea5t \u0111\u1ecbnh. S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML) v\u00e0 \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, ki\u1ebfn tr\u00fac s\u01b0 v\u00e0 c\u00e1c b\u00ean li\u00ean quan kh\u00e1c. C\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 \u0110\u01b0\u1eddng s\u1ed1ng:C\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng \u0111\u1ea1i di\u1ec7n cho c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u1ef1c th\u1ec3 tham gia v\u00e0o t\u01b0\u01a1ng t\u00e1c. Ch\u00fang c\u00f3 th\u1ec3 l\u00e0 c\u00e1c l\u1edbp, ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c th\u00e0nh ph\u1ea7n. M\u1ed7i \u0111\u01b0\u1eddng s\u1ed1ng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng \u0111\u1ee9t \u0111o\u1ea1n th\u1eb3ng \u0111\u1ee9ng, v\u00e0 \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi d\u1ef1a tr\u00ean m\u1ee9c \u0111\u1ed9 tham gia v\u00e0o chu\u1ed7i s\u1ef1 ki\u1ec7n. \u00a0 Tin nh\u1eafn:C\u00e1c tin nh\u1eafn l\u00e0 c\u00e1c h\u00e0nh \u0111\u1ed9ng ho\u1eb7c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng. Ch\u00fang \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng c\u00e1c m\u0169i t\u00ean n\u1ed1i c\u00e1c \u0111\u01b0\u1eddng s\u1ed1ng. C\u00e1c tin nh\u1eafn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh nhi\u1ec1u lo\u1ea1i kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 tin nh\u1eafn \u0111\u1ed3ng b\u1ed9, tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9, tin nh\u1eafn t\u1ef1 th\u00e2n v\u00e0 tin nh\u1eafn tr\u1ea3 v\u1ec1, m\u1ed7i lo\u1ea1i th\u1ec3 hi\u1ec7n m\u1ed9t kh\u00eda c\u1ea1nh kh\u00e1c nhau c\u1ee7a t\u01b0\u01a1ng t\u00e1c. Trong l\u0129nh v\u1ef1c s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, ki\u1ec3u \u0111\u01b0\u1eddng v\u00e0 ki\u1ec3u \u0111\u1ea7u m\u0169i t\u00ean truy\u1ec1n t\u1ea3i th\u00f4ng tin quan tr\u1ecdng v\u1ec1 b\u1ea3n ch\u1ea5t c\u1ee7a c\u00e1c tin nh\u1eafn \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng: Tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 (th\u01b0\u1eddng l\u00e0 l\u1eddi g\u1ecdi thao t\u00e1c) Bi\u1ec3u di\u1ec5n: C\u00e1c tin nh\u1eafn n\u00e0y \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng li\u1ec1n c\u00f3 \u0111\u1ea7u m\u0169i t\u00ean \u0111\u1ea7y. M\u1ee5c \u0111\u00edch: C\u00e1c tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 bi\u1ec3u th\u1ecb giao ti\u1ebfp th\u01b0\u1eddng xuy\u00ean gi\u1eefa ng\u01b0\u1eddi g\u1eedi v\u00e0 ng\u01b0\u1eddi nh\u1eadn, th\u01b0\u1eddng th\u1ec3 hi\u1ec7n vi\u1ec7c g\u1ecdi th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c ho\u1eb7c l\u1eddi g\u1ecdi ph\u01b0\u01a1ng th\u1ee9c b\u00ean trong h\u1ec7 th\u1ed1ng. V\u00ed d\u1ee5: \u00a0 Tin nh\u1eafn tr\u1ea3 v\u1ec1 Bi\u1ec3u di\u1ec5n: C\u00e1c tin nh\u1eafn tr\u1ea3 v\u1ec1 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng \u0111\u01b0\u1eddng \u0111\u1ee9t \u0111o\u1ea1n v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean h\u1edf. M\u1ee5c \u0111\u00edch: C\u00e1c tin nh\u1eafn n\u00e0y bi\u1ec3u th\u1ecb vi\u1ec7c tr\u1ea3 l\u1ea1i quy\u1ec1n ki\u1ec3m so\u00e1t ho\u1eb7c th\u00f4ng tin t\u1eeb ng\u01b0\u1eddi nh\u1eadn v\u1ec1 ng\u01b0\u1eddi g\u1eedi. Ch\u00fang th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n sau m\u1ed9t tin nh\u1eafn \u0111\u1ed3ng b\u1ed9 tr\u01b0\u1edbc \u0111\u00f3. V\u00ed d\u1ee5: Tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9 Bi\u1ec3u di\u1ec5n: C\u00e1c tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9 \u0111\u01b0\u1ee3c minh h\u1ecda b\u1eb1ng \u0111\u01b0\u1eddng li\u1ec1n c\u00f3 \u0111\u1ea7u m\u0169i t\u00ean h\u1edf. M\u1ee5c \u0111\u00edch: Ch\u00fang \u0111\u1ea1i di\u1ec7n cho c\u00e1c tin nh\u1eafn \u0111\u01b0\u1ee3c g\u1eedi m\u00e0 kh\u00f4ng c\u1ea7n ch\u1edd ph\u1ea3n h\u1ed3i ngay l\u1eadp t\u1ee9c. C\u00e1c tin nh\u1eafn b\u1ea5t \u0111\u1ed3ng b\u1ed9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 truy\u1ec1n t\u1ea3i c\u00e1c s\u1ef1 ki\u1ec7n ho\u1eb7c t\u00edn hi\u1ec7u b\u00ean trong h\u1ec7 th\u1ed1ng. V\u00ed d\u1ee5: Tin nh\u1eafn t\u1ea1o v\u00e0 h\u1ee7y: Qu\u1ea3n l\u00fd c\u00e1c th\u00e0nh vi\u00ean tham gia Trong th\u1ebf gi\u1edbi c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, c\u00e1c th\u00e0nh ph\u1ea7n kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3i t\u1ed3n t\u1ea1i su\u1ed1t to\u00e0n b\u1ed9 kho\u1ea3ng th\u1eddi gian t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3. Thay v\u00e0o \u0111\u00f3, c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea1o ra v\u00e0 lo\u1ea1i b\u1ecf m\u1ed9t c\u00e1ch \u0111\u1ed9ng d\u1ef1a tr\u00ean c\u00e1c tin nh\u1eafn trao \u0111\u1ed5i trong tr\u00ecnh t\u1ef1. Tin nh\u1eafn t\u1ea1o: S\u1ef1 ra \u0111\u1eddi c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n T\u1ea1o:C\u00e1c tin nh\u1eafn t\u1ea1o ch\u1ecbu tr\u00e1ch nhi\u1ec7m t\u1ea1o ra m\u1ed9t th\u00e0nh ph\u1ea7n m\u1edbi, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ng\u01b0\u1eddi nh\u1eadn, trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1. V\u1ecb tr\u00ed:C\u00e1c th\u00e0nh ph\u1ea7n \u0111\u00e3 t\u1ed3n t\u1ea1i ngay t\u1eeb \u0111\u1ea7u c\u1ee7a t\u01b0\u01a1ng t\u00e1c \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf ph\u00eda tr\u00ean s\u01a1 \u0111\u1ed3. Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t trong qu\u00e1 tr\u00ecnh t\u01b0\u01a1ng t\u00e1c th\u00f4ng qua c\u00e1c l\u1eddi g\u1ecdi t\u1ea1o s\u1ebd \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng \u0111\u1eb7t \u1edf ph\u00eda d\u01b0\u1edbi s\u01a1 \u0111\u1ed3. C\u00e1c tin nh\u1eafn t\u1ea1o n\u00e0y \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c minh h\u1ecda c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n m\u1edbi tham gia v\u00e0o tr\u00ecnh t\u1ef1 v\u00e0 tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong t\u01b0\u01a1ng t\u00e1c \u0111ang di\u1ec5n ra, l\u00e0m phong ph\u00fa th\u00eam t\u00ednh \u0111\u1ed9ng c\u1ee7a s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1. Tin nh\u1eafn h\u1ee7y: L\u1eddi t\u1ea1m bi\u1ec7t d\u00e0nh cho c\u00e1c th\u00e0nh ph\u1ea7n Trong l\u0129nh v\u1ef1c s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, c\u00e1c tin nh\u1eafn h\u1ee7y th\u1ef1c hi\u1ec7n vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c lo\u1ea1i b\u1ecf ho\u1eb7c &#8220;h\u1ee7y b\u1ecf&#8221; m\u1ed9t th\u00e0nh ph\u1ea7n kh\u1ecfi t\u01b0\u01a1ng t\u00e1c \u0111ang di\u1ec5n ra. Khi m\u1ed9t tin nh\u1eafn h\u1ee7y \u0111\u01b0\u1ee3c g\u1ecdi, n\u00f3 b\u00e1o hi\u1ec7u s\u1ef1 k\u1ebft th\u00fac c\u1ee7a s\u1ef1 tham gia c\u1ee7a th\u00e0nh ph\u1ea7n v\u00e0o tr\u00ecnh t\u1ef1. Tuy nhi\u00ean, \u0111i\u1ec1u quan tr\u1ecdng c\u1ea7n l\u01b0u \u00fd l\u00e0 c\u00f3 nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf \u0111\u1ec3 ch\u1ec9 ra vi\u1ec7c h\u1ee7y b\u1ecf m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng trong qu\u00e1 tr\u00ecnh t\u01b0\u01a1ng t\u00e1c. C\u00e1c tin nh\u1eafn h\u1ee7y ch\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3 khi vi\u1ec7c h\u1ee7y b\u1ecf \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh &#8220;sau tin nh\u1eafn h\u1ee7y&#8221;. N\u00f3i c\u00e1ch kh\u00e1c, c\u00e1c tin nh\u1eafn h\u1ee7y ch\u1ec9 c\u1ea7n thi\u1ebft khi vi\u1ec7c lo\u1ea1i b\u1ecf m\u1ed9t th\u00e0nh ph\u1ea7n x\u1ea3y ra sau khi th\u1ef1c thi ch\u00ednh tin nh\u1eafn h\u1ee7y \u0111\u00f3. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cho ph\u00e9p linh ho\u1ea1t trong vi\u1ec7c bi\u1ec3u di\u1ec5n v\u00f2ng \u0111\u1eddi c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n trong s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c t\u00ecnh hu\u1ed1ng m\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 th\u1ec3 r\u1eddi kh\u1ecfi t\u01b0\u01a1ng t\u00e1c \u1edf nhi\u1ec1u th\u1eddi \u0111i\u1ec3m kh\u00e1c nhau, \u0111\u1ea3m b\u1ea3o h\u00ecnh \u1ea3nh h\u00f3a r\u00f5 r\u00e0ng v\u00e0 linh ho\u1ea1t h\u00e0nhHi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1: B\u1ea3n v\u1ebd tr\u1ef1c quan v\u1ec1 c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ea7n m\u1ec1m","og_url":"https:\/\/guides.visual-paradigm.com\/vn\/understanding-sequence-diagrams-a-visual-blueprint-of-software-interactions\/","og_site_name":"Visual Paradigm Guides Vietnamese","article_published_time":"2026-02-05T04:31:02+00:00","og_image":[{"width":735,"height":616,"url":"https:\/\/guides.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/02\/08-sequence-diagram-example.png","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_misc":{"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi":"vpadmin","\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"12 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/guides.visual-paradigm.com\/vn\/understanding-sequence-diagrams-a-visual-blueprint-of-software-interactions\/#article","isPartOf":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/understanding-sequence-diagrams-a-visual-blueprint-of-software-interactions\/"},"headline":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1: B\u1ea3n v\u1ebd tr\u1ef1c quan v\u1ec1 c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ea7n m\u1ec1m","datePublished":"2026-02-05T04:31:02+00:00","mainEntityOfPage":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/understanding-sequence-diagrams-a-visual-blueprint-of-software-interactions\/"},"wordCount":5203,"commentCount":0,"image":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/understanding-sequence-diagrams-a-visual-blueprint-of-software-interactions\/#primaryimage"},"thumbnailUrl":"https:\/\/guides.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/02\/08-sequence-diagram-example.png","articleSection":["UML","Visual Modeling"],"inLanguage":"vi","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/guides.visual-paradigm.com\/vn\/understanding-sequence-diagrams-a-visual-blueprint-of-software-interactions\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/guides.visual-paradigm.com\/vn\/understanding-sequence-diagrams-a-visual-blueprint-of-software-interactions\/","url":"https:\/\/guides.visual-paradigm.com\/vn\/understanding-sequence-diagrams-a-visual-blueprint-of-software-interactions\/","name":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1: B\u1ea3n v\u1ebd tr\u1ef1c quan v\u1ec1 c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ea7n m\u1ec1m - 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