{"id":3501,"date":"2022-02-10T09:05:28","date_gmt":"2022-02-10T01:05:28","guid":{"rendered":"https:\/\/blog.visual-paradigm.com\/vn\/?p=3501"},"modified":"2022-11-25T17:39:22","modified_gmt":"2022-11-25T09:39:22","slug":"the-four-types-of-relationship-in-use-case-diagram","status":"publish","type":"post","link":"https:\/\/blog.visual-paradigm.com\/vn\/the-four-types-of-relationship-in-use-case-diagram\/","title":{"rendered":"B\u1ed1n Lo\u1ea1i M\u1ed1i Quan H\u1ec7 Trong S\u01a1 \u0110\u1ed3 Ca S\u1eed D\u1ee5ng"},"content":{"rendered":"<p><span><span class=\"\">Trong UML, c\u00e1c m\u1ed1i quan h\u1ec7 l\u00e0 c\u00e1c k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c ph\u1ea7n t\u1eed m\u00f4 h\u00ecnh.\u00a0<\/span>C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u0169ng \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi nhau trong c\u00e1c lo\u1ea1i quan h\u1ec7 kh\u00e1c nhau.\u00a0M\u1ed1i quan h\u1ec7 gi\u1eefa hai tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u1ec1 c\u01a1 b\u1ea3n m\u00f4 h\u00ecnh h\u00f3a s\u1ef1 ph\u1ee5 thu\u1ed9c gi\u1eefa hai tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.\u00a0B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng l\u1ea1i c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng hi\u1ec7n c\u00f3 b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i m\u1ed1i quan h\u1ec7 kh\u00e1c nhau, n\u1ed7 l\u1ef1c t\u1ed5ng th\u1ec3 c\u1ea7n thi\u1ebft \u0111\u1ec3 ph\u00e1t tri\u1ec3n h\u1ec7 th\u1ed1ng s\u1ebd gi\u1ea3m \u0111i.<\/span><\/p>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-use-case-diagram\/\"><span>Bi\u1ec3u \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p<\/span><\/a><span>\u00a0s\u1eed d\u1ee5ng hi\u1ec3n th\u1ecb c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, t\u00e1c nh\u00e2n v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang.\u00a0V\u00ed d\u1ee5, m\u1ed1i quan h\u1ec7 gi\u1eefa m\u1ed9t t\u00e1c nh\u00e2n v\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng minh h\u1ecda r\u1eb1ng t\u00e1c nh\u00e2n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ch\u1ee9c n\u0103ng nh\u1ea5t \u0111\u1ecbnh c\u1ee7a h\u1ec7 th\u1ed1ng kinh doanh.<\/span><\/p>\n<p><strong><span>M\u1ed1i quan h\u1ec7 hi\u1ec7p h\u1ed9i<\/span><\/strong><\/p>\n<p><span>M\u1ed1i\u00a0<\/span><strong><span>li\u00ean k\u1ebft<\/span><\/strong><span>\u00a0l\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa hai b\u1ed9 ph\u00e2n lo\u1ea1i, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u00e1c nh\u00e2n v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, m\u1ed1i quan h\u1ec7 n\u00e0y m\u00f4 t\u1ea3 nguy\u00ean nh\u00e2n c\u1ee7a m\u1ed1i quan h\u1ec7 v\u00e0 c\u00e1c quy t\u1eafc chi ph\u1ed1i m\u1ed1i quan h\u1ec7 \u0111\u00f3.\u00a0M\u1ed9t hi\u1ec7p h\u1ed9i l\u00e0 m\u1ed9t m\u1ed1i quan h\u1ec7 gi\u1eefa m\u1ed9t t\u00e1c nh\u00e2n v\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kinh doanh.\u00a0N\u00f3 ch\u1ec9 ra r\u1eb1ng m\u1ed9t t\u00e1c nh\u00e2n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng kinh doanh.<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-17\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/09-use-case-diagram-example.png\" alt=\"V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng\" \/><\/p>\n<h4><span id=\"Generalization_Relationships\"><strong><span>M\u1ed1i quan h\u1ec7 kh\u00e1i qu\u00e1t h\u00f3a<\/span><\/strong><\/span><\/h4>\n<p><span>M\u1ed1i quan h\u1ec7\u00a0<\/span><strong><span>kh\u00e1i qu\u00e1t h\u00f3a<\/span><\/strong><span>\u00a0l\u00e0 m\u1ed1i quan h\u1ec7 trong \u0111\u00f3 m\u1ed9t ph\u1ea7n t\u1eed m\u00f4 h\u00ecnh (con) d\u1ef1a tr\u00ean m\u1ed9t ph\u1ea7n t\u1eed m\u00f4 h\u00ecnh kh\u00e1c (cha m\u1eb9).\u00a0Quan h\u1ec7 t\u1ed5ng qu\u00e1t h\u00f3a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u01a1 \u0111\u1ed3 l\u1edbp, s\u01a1 \u0111\u1ed3 th\u00e0nh ph\u1ea7n, s\u01a1 \u0111\u1ed3 tri\u1ec3n khai v\u00e0 s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ec9 ra r\u1eb1ng ph\u1ea7n t\u1eed con ch\u1ea5p nh\u1eadn t\u1ea5t c\u1ea3 c\u00e1c thu\u1ed9c t\u00ednh, ho\u1ea1t \u0111\u1ed9ng v\u00e0 m\u1ed1i quan h\u1ec7 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong ph\u1ea7n t\u1eed cha.<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-19\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/12-use-case-diagram-generalization-example.png\" alt=\"V\u00ed d\u1ee5 t\u1ed5ng qu\u00e1t h\u00f3a s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng\" \/><\/p>\n<h4><span id=\"Include_Relationships\"><strong><span>Bao g\u1ed3m c\u00e1c m\u1ed1i quan h\u1ec7<\/span><\/strong><\/span><\/h4>\n<p><span>Trong m\u00f4 h\u00ecnh h\u00f3a UML, m\u1ed1i quan h\u1ec7\u00a0<\/span><strong><span>Bao g\u1ed3m<\/span><\/strong><span>\u00a0l\u00e0 m\u1ed1i quan h\u1ec7 trong \u0111\u00f3 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng (tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 s\u1edf) ch\u1ee9a ch\u1ee9c n\u0103ng c\u1ee7a tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00e1c (tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng bao g\u1ed3m).\u00a0M\u1ed1i quan h\u1ec7 ng\u0103n ch\u1eb7n h\u1ed7 tr\u1ee3 vi\u1ec7c s\u1eed d\u1ee5ng l\u1ea1i ch\u1ee9c n\u0103ng trong m\u00f4 h\u00ecnh tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-18\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/10-use-case-diagram-include-example.png\" alt=\"S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng bao g\u1ed3m v\u00ed d\u1ee5\" \/><\/p>\n<h4><span id=\"Extending_relationships\"><strong><span>M\u1edf r\u1ed9ng quan h\u1ec7<\/span><\/strong><\/span><\/h4>\n<p><span>Trong m\u00f4 h\u00ecnh UML, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed1i quan h\u1ec7\u00a0<\/span><strong><span>m\u1edf r\u1ed9ng<\/span><\/strong><span>\u00a0\u0111\u1ec3 ch\u1ec9 \u0111\u1ecbnh r\u1eb1ng m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng (ph\u1ea7n m\u1edf r\u1ed9ng) s\u1ebd m\u1edf r\u1ed9ng h\u00e0nh vi c\u1ee7a m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00e1c (c\u01a1 s\u1edf).\u00a0Lo\u1ea1i m\u1ed1i quan h\u1ec7 n\u00e0y ti\u1ebft l\u1ed9 chi ti\u1ebft v\u1ec1 h\u1ec7 th\u1ed1ng ho\u1eb7c \u1ee9ng d\u1ee5ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u1ea9n trong tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-20\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/11-use-case-diagram-extend-example.png\" alt=\"V\u00ed d\u1ee5 m\u1edf r\u1ed9ng s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng\" \/><\/p>\n<p><span>Th\u00eam v\u00ed d\u1ee5 v\u1ec1 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/span><\/p>\n<p><span>S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng ph\u00e1t s\u00f3ng<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-16\" class=\"related-templates-masonry-content lozad\" title=\"S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng ph\u00e1t s\u00f3ng\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/broadcasting-system-use-case-diagram.png\" alt=\"M\u1eabu S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng ph\u00e1t s\u00f3ng (\u0110\u01b0\u1ee3c t\u1ea1o b\u1edfi tr\u00ecnh t\u1ea1o S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a Visual Paradigm Online)\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/8b3fb61d-abbb-4d2c-8d3b-47e643316f1d.xml&amp;name=Broadcasting%20System%20Use%20Case%20Diagram\"><span>CH\u1ec8NH S\u1eecA S\u01a0 \u0110\u1ed2 N\u00c0Y<\/span><\/a><\/p>\n<p><span>V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng ATM<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-1\" class=\"related-templates-masonry-content lozad\" title=\"V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng ATM\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/atm-use-case-diagram-example.png\" alt=\"M\u1eabu S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: V\u00ed d\u1ee5 v\u1ec1 S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ATM (\u0110\u01b0\u1ee3c t\u1ea1o b\u1edfi tr\u00ecnh t\u1ea1o S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a Visual Paradigm Online)\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/b92c57a8-fe64-40ed-8d29-f990c60442ba.xml&amp;name=ATM%20Use%20Case%20Diagram%20Example\"><span>CH\u1ec8NH S\u1eecA S\u01a0 \u0110\u1ed2 N\u00c0Y<\/span><\/a><\/p>\n<p><span>S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: Nhi\u1ec1u d\u1ef1 \u00e1n v\u1edbi ranh gi\u1edbi h\u1ec7 th\u1ed1ng<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-2\" class=\"related-templates-masonry-content lozad\" title=\"S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: Nhi\u1ec1u d\u1ef1 \u00e1n v\u1edbi ranh gi\u1edbi h\u1ec7 th\u1ed1ng\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/use-case-diagram-multiple-projects-with-system-boundaries.png\" alt=\"M\u1eabu S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: Nhi\u1ec1u d\u1ef1 \u00e1n c\u00f3 ranh gi\u1edbi h\u1ec7 th\u1ed1ng (\u0110\u01b0\u1ee3c t\u1ea1o b\u1edfi tr\u00ecnh t\u1ea1o S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a Visual Paradigm Online)\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/36994afe-da24-490b-a738-ec69389e6848.xml&amp;name=Use%20Case%20Diagram%3A%20Multiple%20Projects%20with%20System%20Boundaries\"><span>CH\u1ec8NH S\u1eecA S\u01a0 \u0110\u1ed2 N\u00c0Y<\/span><\/a><\/p>\n<p><span>S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: H\u1ec7 th\u1ed1ng ki\u1ec3m tra tr\u1ef1c tuy\u1ebfn<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-3\" class=\"related-templates-masonry-content lozad\" title=\"S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: H\u1ec7 th\u1ed1ng ki\u1ec3m tra tr\u1ef1c tuy\u1ebfn\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/use-case-diagram-online-examination-system.png\" alt=\"M\u1eabu S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: H\u1ec7 th\u1ed1ng ki\u1ec3m tra tr\u1ef1c tuy\u1ebfn (\u0110\u01b0\u1ee3c t\u1ea1o b\u1edfi ng\u01b0\u1eddi t\u1ea1o S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng c\u1ee7a Visual Paradigm Online)\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/6853c46b-cd6b-42e6-8ab3-1dc0212a9138.xml&amp;name=Use%20Case%20Diagram%3A%20Online%20Examination%20System\"><span>CH\u1ec8NH S\u1eecA S\u01a0 \u0110\u1ed2 N\u00c0Y<\/span><\/a><\/p>\n<p><span>V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: D\u1ecbch v\u1ee5 h\u00e0nh kh\u00e1ch<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-4\" class=\"related-templates-masonry-content lozad\" title=\"V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: D\u1ecbch v\u1ee5 h\u00e0nh kh\u00e1ch\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/use-case-diagram-example-passenger-service.png\" alt=\"M\u1eabu S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: V\u00ed d\u1ee5 v\u1ec1 S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: D\u1ecbch v\u1ee5 h\u00e0nh kh\u00e1ch (\u0110\u01b0\u1ee3c t\u1ea1o b\u1edfi ng\u01b0\u1eddi t\u1ea1o S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a Visual Paradigm Online)\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/92142a93-2b66-495e-8c97-6fd871672ee6.xml&amp;name=Use%20Case%20Diagram%20Example%3A%20Passenger%20Service\"><span>CH\u1ec8NH S\u1eecA S\u01a0 \u0110\u1ed2 N\u00c0Y<\/span><\/a><\/p>\n<p><span>V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: Ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-5\" class=\"related-templates-masonry-content lozad\" title=\"V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: Ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/use-case-diagram-example-software-development.png\" alt=\"M\u1eabu S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: V\u00ed d\u1ee5 v\u1ec1 S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: Ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m (\u0110\u01b0\u1ee3c t\u1ea1o b\u1edfi tr\u00ecnh t\u1ea1o S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a Visual Paradigm Online)\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/8db64e28-b238-426a-b45a-16904dad2d78.xml&amp;name=Use%20Case%20Diagram%20Example%3A%20Software%20Development\"><span>CH\u1ec8NH S\u1eecA S\u01a0 \u0110\u1ed2 N\u00c0Y<\/span><\/a><\/p>\n<p><span>V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: H\u1ec7 th\u1ed1ng b\u00e3i \u0111\u1eadu xe<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-6\" class=\"related-templates-masonry-content lozad\" title=\"V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: H\u1ec7 th\u1ed1ng b\u00e3i \u0111\u1eadu xe\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/use-case-diagram-example-carpark-system.png\" alt=\"M\u1eabu S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: V\u00ed d\u1ee5 v\u1ec1 S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: H\u1ec7 th\u1ed1ng b\u00e3i \u0111\u1ed7 xe (\u0110\u01b0\u1ee3c t\u1ea1o b\u1edfi tr\u00ecnh t\u1ea1o S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a Visual Paradigm Online)\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/1f361115-e531-44f1-b88c-e8d977d018ab.xml&amp;name=Use%20Case%20Diagram%20Example%3A%20Carpark%20System\"><span>CH\u1ec8NH S\u1eecA S\u01a0 \u0110\u1ed2 N\u00c0Y<\/span><\/a><\/p>\n<p><span>S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng UML: H\u1ec7 th\u1ed1ng x\u1eed l\u00fd \u0111\u01a1n h\u00e0ng<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-7\" class=\"related-templates-masonry-content lozad\" title=\"S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng UML: H\u1ec7 th\u1ed1ng x\u1eed l\u00fd \u0111\u01a1n h\u00e0ng\" src=\"https:\/\/blog.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/13\/2022\/11\/uml-use-case-diagram-order-process-system.png\" alt=\"M\u1eabu S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng UML: H\u1ec7 th\u1ed1ng x\u1eed l\u00fd \u0111\u01a1n h\u00e0ng (\u0110\u01b0\u1ee3c t\u1ea1o b\u1edfi tr\u00ecnh t\u1ea1o S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a Visual Paradigm Online)\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/9737b5ac-6e60-472b-9b57-d47d1e1894ee.xml&amp;name=UML%20Use%20Case%20Diagram%3A%20Order%20Process%20System\"><span>CH\u1ec8NH S\u1eecA S\u01a0 \u0110\u1ed2 N\u00c0Y<\/span><\/a><\/p>\n<p>&nbsp;<\/p>\n<p><span>Bao g\u1ed3m v\u00e0 m\u1edf r\u1ed9ng s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-15\" class=\"related-templates-masonry-content lozad\" title=\"Bao g\u1ed3m v\u00e0 m\u1edf r\u1ed9ng s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/include-and-extend-use-case-diagram.png\" alt=\"M\u1eabu S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: Bao g\u1ed3m v\u00e0 m\u1edf r\u1ed9ng S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng (\u0110\u01b0\u1ee3c t\u1ea1o b\u1edfi tr\u00ecnh t\u1ea1o S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a Visual Paradigm Online)\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/4814c887-a726-47bb-8d07-df369cc93777.xml&amp;name=Include%20and%20Extend%20Use%20Case%20Diagram\"><span>CH\u1ec8NH S\u1eecA S\u01a0 \u0110\u1ed2 N\u00c0Y<\/span><\/a><\/p>\n<p><span>V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: Trang web (M\u1edf r\u1ed9ng v\u00e0 bao g\u1ed3m ca s\u1eed d\u1ee5ng)<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-14\" class=\"related-templates-masonry-content lozad\" title=\"V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: Trang web (M\u1edf r\u1ed9ng v\u00e0 bao g\u1ed3m ca s\u1eed d\u1ee5ng)\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/use-case-diagram-example-website-extend-and-include-use-case.png\" alt=\"M\u1eabu S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: V\u00ed d\u1ee5 v\u1ec1 S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: Trang web (M\u1edf r\u1ed9ng v\u00e0 bao g\u1ed3m tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng) (\u0110\u01b0\u1ee3c t\u1ea1o b\u1edfi tr\u00ecnh t\u1ea1o S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a Visual Paradigm Online)\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/ebe9444d-1ffc-464d-a9b8-6b923da9b741.xml&amp;name=Use%20Case%20Diagram%20Example%3A%20Website%20%28Extend%20and%20Include%20Use%20Case%29\"><span>CH\u1ec8NH S\u1eecA S\u01a0 \u0110\u1ed2 N\u00c0Y<\/span><\/a><\/p>\n<p><span>V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: H\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i v\u1edbi t\u01b0 c\u00e1ch l\u00e0 di\u1ec5n vi\u00ean<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-10\" class=\"related-templates-masonry-content lozad\" title=\"V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: H\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i v\u1edbi t\u01b0 c\u00e1ch l\u00e0 di\u1ec5n vi\u00ean\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/use-case-diagram-example-external-system-as-actor.png\" alt=\"M\u1eabu S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: V\u00ed d\u1ee5 v\u1ec1 S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: H\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i \u0111\u00f3ng vai tr\u00f2 l\u00e0 T\u00e1c nh\u00e2n (\u0110\u01b0\u1ee3c t\u1ea1o b\u1edfi tr\u00ecnh t\u1ea1o S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a Visual Paradigm Online)\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/1cc743f9-a26c-45e4-aaa1-2447bcc41dbf.xml&amp;name=Use%20Case%20Diagram%20Example%3A%20External%20System%20as%20Actor\"><span>CH\u1ec8NH S\u1eecA S\u01a0 \u0110\u1ed2 N\u00c0Y<\/span><\/a><\/p>\n<p><span>S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng V\u00ed d\u1ee5: ATM ng\u00e2n h\u00e0ng<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-11\" class=\"related-templates-masonry-content lozad\" title=\"S\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng V\u00ed d\u1ee5: ATM ng\u00e2n h\u00e0ng\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/use-case-diagram-example-bank-atm.png\" alt=\"M\u1eabu S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: V\u00ed d\u1ee5 v\u1ec1 S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: ATM ng\u00e2n h\u00e0ng (\u0110\u01b0\u1ee3c t\u1ea1o b\u1edfi tr\u00ecnh t\u1ea1o S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a Visual Paradigm Online)\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/30a2ced3-3aa4-40c5-b2a0-8e987518b6de.xml&amp;name=Use%20Case%20Diagram%20Example%3A%20Bank%20ATM\"><span>CH\u1ec8NH S\u1eecA S\u01a0 \u0110\u1ed2 N\u00c0Y<\/span><\/a><\/p>\n<p><span>V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: S\u00e2n bay<\/span><\/p>\n<p><img decoding=\"async\" id=\"thepasted-12\" class=\"related-templates-masonry-content lozad\" title=\"V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ca s\u1eed d\u1ee5ng: S\u00e2n bay\" src=\"https:\/\/blog.visual-paradigm.com\/wp-content\/uploads\/2022\/10\/use-case-diagram-example-airport.png\" alt=\"M\u1eabu S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: V\u00ed d\u1ee5 v\u1ec1 S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: S\u00e2n bay (\u0110\u01b0\u1ee3c t\u1ea1o b\u1edfi tr\u00ecnh t\u1ea1o S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a Visual Paradigm Online)\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/4c655668-1fcf-4335-8313-5783862271da.xml&amp;name=Use%20Case%20Diagram%20Example%3A%20Airport\"><span>CH\u1ec8NH S\u1eecA S\u01a0 \u0110\u1ed2 N\u00c0Y<\/span><\/a><\/p>\n<h3><span id=\"References\"><span>Ng\u01b0\u1eddi gi\u1edbi thi\u1ec7u<\/span><\/span><\/h3>\n<ul>\n<li><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/solutions\/free-use-case-diagram-tool\/\"><span>C\u00f4ng c\u1ee5 s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng mi\u1ec5n ph\u00ed<\/span><\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>In UML, relationships are connections between model elements. Use cases are also connected to each other in different kinds of relationships. The relationship between two use cases basically models the dependencies between two use cases. By reusing existing use cases using different types of relationships, the overall effort required to develop the system is reduced. Use case diagrams show use cases, actors, and the relationships between them. For example, the relationship between an actor and a use case illustrates that the actor can use a certain functionality of the business system.<\/p>\n","protected":false},"author":1,"featured_media":3535,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[36],"tags":[],"class_list":["post-3501","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uml","loop-entry","clr"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>B\u1ed1n Lo\u1ea1i M\u1ed1i Quan H\u1ec7 Trong S\u01a1 \u0110\u1ed3 Ca S\u1eed D\u1ee5ng - Visual Paradigm Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.visual-paradigm.com\/vn\/the-four-types-of-relationship-in-use-case-diagram\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"B\u1ed1n Lo\u1ea1i M\u1ed1i Quan H\u1ec7 Trong S\u01a1 \u0110\u1ed3 Ca S\u1eed D\u1ee5ng - Visual Paradigm Blog\" \/>\n<meta property=\"og:description\" content=\"In UML, relationships are connections between model elements. Use cases are also connected to each other in different kinds of relationships. The relationship between two use cases basically models the dependencies between two use cases. By reusing existing use cases using different types of relationships, the overall effort required to develop the system is reduced. Use case diagrams show use cases, actors, and the relationships between them. 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