{"id":10681,"date":"2025-01-10T13:35:24","date_gmt":"2025-01-10T05:35:24","guid":{"rendered":"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/"},"modified":"2026-04-14T19:08:09","modified_gmt":"2026-04-14T11:08:09","slug":"understanding-use-case-diagrams-key-concepts-and-applications","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/","title":{"rendered":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: C\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-use-case-diagram\/\">S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/a>l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 n\u1ec1n t\u1ea3ng trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m v\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thu th\u1eadp v\u00e0 m\u00f4 h\u00ecnh h\u00f3a c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng t\u1eeb g\u00f3c nh\u00ecn ng\u01b0\u1eddi d\u00f9ng. C\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y m\u00f4 t\u1ea3 tr\u1ef1c quan c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa ng\u01b0\u1eddi d\u00f9ng (c\u00e1c t\u00e1c nh\u00e2n) v\u00e0 h\u1ec7 th\u1ed1ng, gi\u00fap x\u00e1c \u0111\u1ecbnh v\u00e0 ghi ch\u00e9p h\u00e0nh vi v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<p>B\u00e0i vi\u1ebft n\u00e0y s\u1ebd gi\u1ea3i th\u00edch c\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh v\u1ec1 s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, v\u1edbi tr\u1ecdng t\u00e2m \u0111\u1eb7c bi\u1ec7t v\u00e0o c\u00e1c m\u1ed1i quan h\u1ec7 \u201cbao g\u1ed3m\u201d v\u00e0 \u201cm\u1edf r\u1ed9ng\u201d, s\u1eed d\u1ee5ng v\u00ed d\u1ee5 v\u1ec1 H\u1ec7 th\u1ed1ng b\u1ea3ng tin (BBS) \u0111\u1ec3 minh h\u1ecda c\u00e1c kh\u00e1i ni\u1ec7m n\u00e0y v\u00e0 t\u00ednh h\u1eefu \u00edch c\u1ee7a ch\u00fang trong m\u00f4 h\u00ecnh h\u00f3a y\u00eau c\u1ea7u.<\/p>\n<h2>C\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh trong s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/h2>\n<p><img alt=\"Use Case Model: Bulletin Board System\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/b3387898-edd8-4801-b76d-16c753a22ded\/use-case-diagram-design\/use-case-model-bulletin-board-system.png\"\/><\/p>\n<h3>1. T\u00e1c nh\u00e2n<\/h3>\n<ul>\n<li><strong>\u0110\u1ecbnh ngh\u0129a:<\/strong>\u00a0T\u00e1c nh\u00e2n \u0111\u1ea1i di\u1ec7n cho ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>V\u00ed d\u1ee5:<\/strong>\u00a0Trong H\u1ec7 th\u1ed1ng b\u1ea3ng tin, t\u00e1c nh\u00e2n l\u00e0 \u201cTh\u00e0nh vi\u00ean.\u201d<\/li>\n<\/ul>\n<h3>2. Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/h3>\n<ul>\n<li><strong>\u0110\u1ecbnh ngh\u0129a:<\/strong>\u00a0C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng m\u00f4 t\u1ea3 c\u00e1c t\u01b0\u01a1ng t\u00e1c c\u1ee5 th\u1ec3 gi\u1eefa c\u00e1c t\u00e1c nh\u00e2n v\u00e0 h\u1ec7 th\u1ed1ng nh\u1eb1m \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c m\u1ee5c ti\u00eau nh\u1ea5t \u0111\u1ecbnh.<\/li>\n<li><strong>Th\u00e0nh ph\u1ea7n:<\/strong>\u00a0T\u00ean tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, m\u00f4 t\u1ea3 ng\u1eafn g\u1ecdn, c\u00e1c t\u00e1c nh\u00e2n tham gia, \u0111i\u1ec1u ki\u1ec7n ti\u1ec1n, \u0111i\u1ec1u ki\u1ec7n h\u1eadu, k\u1ecbch b\u1ea3n th\u00e0nh c\u00f4ng ch\u00ednh v\u00e0 c\u00e1c k\u1ecbch b\u1ea3n thay th\u1ebf.<\/li>\n<li><strong>V\u00ed d\u1ee5:<\/strong>\u00a0Trong BBS, c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng bao g\u1ed3m \u201cXem danh s\u00e1ch b\u1ea3ng tin\u201d, \u201cXem danh s\u00e1ch m\u1ee5c\u201d, \u201cXem n\u1ed9i dung chi ti\u1ebft\u201d, \u201cT\u1ea3i l\u00ean tin nh\u1eafn\u201d, \u201cS\u1eeda tin nh\u1eafn\u201d, \u201cX\u00f3a tin nh\u1eafn\u201d v\u00e0 \u201cT\u00ecm ki\u1ebfm tin nh\u1eafn.\u201d<\/li>\n<\/ul>\n<h3>3. S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/h3>\n<ul>\n<li><strong>\u0110\u1ecbnh ngh\u0129a:<\/strong>\u00a0S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan v\u1ec1 c\u00e1c t\u00e1c nh\u00e2n, c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang.<\/li>\n<li><strong>C\u00e1c th\u00e0nh ph\u1ea7n:<\/strong>\u00a0T\u00e1c nh\u00e2n (\u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh ng\u01b0\u1eddi d\u1ea1ng que), c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng (\u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh elip), v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 (\u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng).<\/li>\n<li><strong>V\u00ed d\u1ee5:<\/strong>\u00a0S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a BBS th\u1ec3 hi\u1ec7n t\u00e1c nh\u00e2n \u201cTh\u00e0nh vi\u00ean\u201d t\u01b0\u01a1ng t\u00e1c v\u1edbi nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng li\u00ean quan \u0111\u1ebfn vi\u1ec7c qu\u1ea3n l\u00fd v\u00e0 xem tin nh\u1eafn tr\u00ean b\u1ea3ng tin.<\/li>\n<\/ul>\n<h3>4. C\u00e1c m\u1ed1i quan h\u1ec7<\/h3>\n<ul>\n<li><strong>Lo\u1ea1i:<\/strong>\n<ul>\n<li><strong>Li\u00ean k\u1ebft:<\/strong>\u00a0M\u1ed9t \u0111\u01b0\u1eddng n\u1ed1i gi\u1eefa m\u1ed9t t\u00e1c nh\u00e2n v\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, cho th\u1ea5y t\u00e1c nh\u00e2n tham gia v\u00e0o tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u00f3.<\/li>\n<li><strong>Bao g\u1ed3m:<\/strong>M\u1ed9t m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, trong \u0111\u00f3 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng bao g\u1ed3m h\u00e0nh vi c\u1ee7a m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00e1c.<\/li>\n<li><strong>M\u1edf r\u1ed9ng:<\/strong>M\u1ed9t m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, trong \u0111\u00f3 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng m\u1edf r\u1ed9ng h\u00e0nh vi c\u1ee7a m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00e1c d\u01b0\u1edbi m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh.<\/li>\n<li><strong>T\u1ed5ng qu\u00e1t h\u00f3a:<\/strong>M\u1ed9t m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c t\u00e1c nh\u00e2n ho\u1eb7c c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, trong \u0111\u00f3 m\u1ed9t t\u00e1c nh\u00e2n ho\u1eb7c m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng l\u00e0 phi\u00ean b\u1ea3n chuy\u00ean bi\u1ec7t h\u00f3a c\u1ee7a m\u1ed9t t\u00e1c nh\u00e2n ho\u1eb7c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00e1c.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>M\u1ed1i quan h\u1ec7 bao g\u1ed3m<\/h2>\n<h3>\u0110\u1ecbnh ngh\u0129a<\/h3>\n<p>\u0110i\u1ec1u<a href=\"https:\/\/blog.visual-paradigm.com\/include-and-extend-use-cases\/\">m\u1ed1i quan h\u1ec7 \u201cbao g\u1ed3m\u201d<\/a>\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ch\u1ee9a h\u00e0nh vi c\u1ee7a m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00e1c. N\u00f3 cho th\u1ea5y r\u1eb1ng tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c bao g\u1ed3m l\u00e0 m\u1ed9t ph\u1ea7n b\u1eaft bu\u1ed9c c\u1ee7a tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 s\u1edf.<\/p>\n<h3>V\u00ed d\u1ee5 trong BBS<\/h3>\n<p>Trong H\u1ec7 th\u1ed1ng B\u1ea3ng tin, c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u201cT\u1ea3i l\u00ean tin nh\u1eafn,\u201d \u201cS\u1eeda \u0111\u1ed5i tin nh\u1eafn,\u201d \u201cX\u00f3a tin nh\u1eafn,\u201d v\u00e0 \u201cT\u00ecm ki\u1ebfm tin nh\u1eafn\u201d \u0111\u1ec1u bao g\u1ed3m tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u201c\u0110\u0103ng nh\u1eadp.\u201d \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 \u0111\u1ec3 th\u1ef1c hi\u1ec7n b\u1ea5t k\u1ef3 h\u00e0nh \u0111\u1ed9ng n\u00e0o trong s\u1ed1 n\u00e0y, th\u00e0nh vi\u00ean ph\u1ea3i \u0111\u0103ng nh\u1eadp v\u00e0o h\u1ec7 th\u1ed1ng tr\u01b0\u1edbc.<\/p>\n<h3>L\u1ee3i \u00edch<\/h3>\n<p>M\u1ed1i quan h\u1ec7 \u201cbao g\u1ed3m\u201d gi\u00fap chia nh\u1ecf c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u00e0 tr\u00e1nh s\u1ef1 tr\u00f9ng l\u1eb7p. B\u1eb1ng c\u00e1ch bao g\u1ed3m tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u201c\u0110\u0103ng nh\u1eadp,\u201d ch\u00fang ta \u0111\u1ea3m b\u1ea3o r\u1eb1ng quy tr\u00ecnh \u0111\u0103ng nh\u1eadp l\u00e0 m\u1ed9t b\u01b0\u1edbc b\u1eaft bu\u1ed9c cho c\u00e1c h\u00e0nh \u0111\u1ed9ng n\u00e0y, v\u00e0 ch\u00fang ta kh\u00f4ng c\u1ea7n l\u1eb7p l\u1ea1i c\u00e1c b\u01b0\u1edbc \u0111\u0103ng nh\u1eadp trong m\u00f4 t\u1ea3 t\u1eebng tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/p>\n<h2>M\u1ed1i quan h\u1ec7 m\u1edf r\u1ed9ng<\/h2>\n<h3>\u0110\u1ecbnh ngh\u0129a<\/h3>\n<p>\u0110i\u1ec1u<a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/use-case-diagram\/include-and-extend-use-case-diagram\/\">m\u1ed1i quan h\u1ec7 \u201cm\u1edf r\u1ed9ng\u201d<\/a>\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng th\u00eam h\u00e0nh vi v\u00e0o m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00e1c d\u01b0\u1edbi m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh. N\u00f3 cho th\u1ea5y r\u1eb1ng tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng m\u1edf r\u1ed9ng l\u00e0 m\u1ed9t ph\u1ea7n t\u00f9y ch\u1ecdn c\u1ee7a tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 s\u1edf.<\/p>\n<h3>V\u00ed d\u1ee5 trong BBS<\/h3>\n<p>Trong BBS, m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 m\u1ed1i quan h\u1ec7 \u201cm\u1edf r\u1ed9ng\u201d c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng nh\u01b0 \u201cG\u1eedi th\u00f4ng b\u00e1o\u201d m\u1edf r\u1ed9ng tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u201cT\u1ea3i l\u00ean tin nh\u1eafn.\u201d \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 d\u01b0\u1edbi m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh, ch\u1eb3ng h\u1ea1n nh\u01b0 khi m\u1ed9t tin nh\u1eafn \u0111\u01b0\u1ee3c t\u1ea3i l\u00ean, th\u00f4ng b\u00e1o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn c\u00e1c th\u00e0nh vi\u00ean kh\u00e1c.<\/p>\n<h3>L\u1ee3i \u00edch<\/h3>\n<p>M\u1ed1i quan h\u1ec7 \u201cm\u1edf r\u1ed9ng\u201d gi\u00fap ghi nh\u1eadn c\u00e1c h\u00e0nh vi t\u00f9y ch\u1ecdn v\u00e0 c\u00e1c tr\u01b0\u1eddng h\u1ee3p ngo\u1ea1i l\u1ec7. N\u00f3 cho ph\u00e9p th\u00eam ch\u1ee9c n\u0103ng b\u1ed5 sung m\u00e0 kh\u00f4ng c\u1ea7n thay \u0111\u1ed5i tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 s\u1edf, gi\u00fap h\u1ec7 th\u1ed1ng linh ho\u1ea1t v\u00e0 th\u00edch nghi t\u1ed1t h\u01a1n v\u1edbi c\u00e1c t\u00ecnh hu\u1ed1ng kh\u00e1c nhau.<\/p>\n<h2>T\u1ea1i sao s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng h\u1eefu \u00edch cho m\u00f4 h\u00ecnh h\u00f3a y\u00eau c\u1ea7u<\/h2>\n<h3>1. Ti\u1ebfp c\u1eadn l\u1ea5y ng\u01b0\u1eddi d\u00f9ng l\u00e0m trung t\u00e2m<\/h3>\n<p>S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng t\u1eadp trung v\u00e0o g\u00f3c nh\u00ecn c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, \u0111\u1ea3m b\u1ea3o r\u1eb1ng h\u1ec7 th\u1ed1ng \u0111\u00e1p \u1ee9ng nhu c\u1ea7u v\u00e0 k\u1ef3 v\u1ecdng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. B\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh c\u00e1c t\u00e1c nh\u00e2n v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c c\u1ee7a h\u1ecd v\u1edbi h\u1ec7 th\u1ed1ng, ch\u00fang ta c\u00f3 th\u1ec3 thi\u1ebft k\u1ebf m\u1ed9t h\u1ec7 th\u1ed1ng tr\u1ef1c quan v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h3>2. Y\u00eau c\u1ea7u r\u00f5 r\u00e0ng<\/h3>\n<p>S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng gi\u00fap ghi nh\u1eadn v\u00e0 t\u00e0i li\u1ec7u h\u00f3a c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng v\u00e0 s\u00fac t\u00edch. M\u1ed7i tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u1ea1i di\u1ec7n cho m\u1ed9t m\u1ee5c ti\u00eau ho\u1eb7c ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3, gi\u00fap d\u1ec5 hi\u1ec3u v\u00e0 qu\u1ea3n l\u00fd c\u00e1c y\u00eau c\u1ea7u c\u1ee7a h\u1ec7 th\u1ed1ng h\u01a1n.<\/p>\n<h3>3. C\u00f4ng c\u1ee5 giao ti\u1ebfp<\/h3>\n<p>S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u00f4ng c\u1ee5 giao ti\u1ebfp gi\u1eefa c\u00e1c b\u00ean li\u00ean quan, nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 ng\u01b0\u1eddi d\u00f9ng. Ch\u00fang cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan v\u1ec1 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng, \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u c\u00f3 c\u00f9ng m\u1ed9t hi\u1ec3u bi\u1ebft chung v\u1ec1 h\u00e0nh vi v\u00e0 y\u00eau c\u1ea7u c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<h3>4. X\u00e1c \u0111\u1ecbnh c\u00e1c kho\u1ea3ng tr\u1ed1ng<\/h3>\n<p>B\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, c\u00e1c kho\u1ea3ng tr\u1ed1ng v\u00e0 s\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n ti\u1ec1m t\u00e0ng trong y\u00eau c\u1ea7u c\u1ee7a h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh v\u00e0 x\u1eed l\u00fd s\u1edbm trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u1ea1o ra m\u1ed9t h\u1ec7 th\u1ed1ng v\u1eefng ch\u1eafc v\u00e0 \u0111\u00e1ng tin c\u1eady h\u01a1n.<\/p>\n<h3>5. C\u00e1c tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed<\/h3>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/use-case-diagram-software\/\">C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/a>c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra c\u00e1c tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed, \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c ki\u1ec3m th\u1eed k\u1ef9 l\u01b0\u1ee1ng v\u00e0 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u \u0111\u00e3 n\u00eau. M\u1ed7i tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh m\u1ed9t ho\u1eb7c nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed, bao g\u1ed3m c\u1ea3 c\u00e1c k\u1ecbch b\u1ea3n th\u00e0nh c\u00f4ng ch\u00ednh v\u00e0 c\u00e1c k\u1ecbch b\u1ea3n thay th\u1ebf.<\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>S\u01a1 \u0111\u1ed3 Tr\u01b0\u1eddng h\u1ee3p S\u1eed d\u1ee5ng l\u00e0 m\u1ed9t<a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/use-case-diagram-software\/\">c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd<\/a>\u0111\u1ec3 hi\u1ec3u, thu th\u1eadp v\u00e0 t\u00e0i li\u1ec7u h\u00f3a c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng t\u1eeb g\u00f3c nh\u00ecn ng\u01b0\u1eddi d\u00f9ng. B\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh c\u00e1c t\u00e1c nh\u00e2n, m\u00f4 t\u1ea3 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, t\u1ea1o s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u00e0 ph\u00e2n t\u00edch c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 b\u00ean li\u00ean quan c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 cung c\u1ea5p ch\u1ee9c n\u0103ng mong mu\u1ed1n. C\u00e1c m\u1ed1i quan h\u1ec7 \u201cbao g\u1ed3m\u201d v\u00e0 \u201cm\u1edf r\u1ed9ng\u201d trong s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng gi\u00fap ph\u00e2n m\u1ea3nh c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, tr\u00e1nh tr\u00f9ng l\u1eb7p v\u00e0 ghi nh\u1eadn c\u00e1c h\u00e0nh vi t\u00f9y ch\u1ecdn c\u0169ng nh\u01b0 c\u00e1c ngo\u1ea1i l\u1ec7.<\/p>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c t\u1ed5 ch\u1ee9c mu\u1ed1n t\u1ea1o s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u00e0 c\u00e1c bi\u1ec3u di\u1ec5n h\u00ecnh \u1ea3nh kh\u00e1c c\u1ee7a h\u1ec7 th\u1ed1ng c\u1ee7a m\u00ecnh, c\u00e1c c\u00f4ng c\u1ee5 nh\u01b0<a href=\"http:\/\/www.visual-paradigm.com\">Visual Paradigm<\/a>cung c\u1ea5p nhi\u1ec1u t\u00ednh n\u0103ng v\u00e0 m\u1eabu \u0111\u1ec3 r\u00fat ng\u1eafn quy tr\u00ecnh. Truy c\u1eadp Visual Paradigm \u0111\u1ec3 kh\u00e1m ph\u00e1 c\u00e1c c\u00f4ng c\u1ee5 s\u1eb5n c\u00f3 v\u00e0 b\u1eaft \u0111\u1ea7u t\u1ea1o s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a b\u1ea1n ngay h\u00f4m nay.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gi\u1edbi thi\u1ec7u S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ngl\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 n\u1ec1n t\u1ea3ng trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m v\u00e0 ph\u00e2n<\/p>\n","protected":false},"author":1,"featured_media":10682,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","footnotes":""},"categories":[3],"tags":[],"class_list":["post-10681","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unified-modeling-language"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: C\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng - Cybermedian<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/\" \/>\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 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: C\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng - Cybermedian\" \/>\n<meta property=\"og:description\" content=\"Gi\u1edbi thi\u1ec7u S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ngl\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 n\u1ec1n t\u1ea3ng trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m v\u00e0 ph\u00e2n\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/\" \/>\n<meta property=\"og:site_name\" content=\"Cybermedian\" \/>\n<meta property=\"article:published_time\" content=\"2025-01-10T05:35:24+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-14T11:08:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/online.visual-paradigm.com\/repository\/images\/b3387898-edd8-4801-b76d-16c753a22ded\/use-case-diagram-design\/use-case-model-bulletin-board-system.png\" \/><meta property=\"og:image\" content=\"https:\/\/online.visual-paradigm.com\/repository\/images\/b3387898-edd8-4801-b76d-16c753a22ded\/use-case-diagram-design\/use-case-model-bulletin-board-system.png\" \/>\n\t<meta property=\"og:image:width\" content=\"671\" \/>\n\t<meta property=\"og:image:height\" content=\"634\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"vpadmin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/online.visual-paradigm.com\/repository\/images\/b3387898-edd8-4801-b76d-16c753a22ded\/use-case-diagram-design\/use-case-model-bulletin-board-system.png\" \/>\n<meta name=\"twitter:creator\" content=\"@vpadmin\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"vpadmin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"12 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/\"},\"author\":{\"name\":\"vpadmin\",\"@id\":\"https:\/\/www.cybermedian.com\/vn\/#\/schema\/person\/0122cdf8fc3b73482dd8a30c8500f75a\"},\"headline\":\"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: C\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng\",\"datePublished\":\"2025-01-10T05:35:24+00:00\",\"dateModified\":\"2026-04-14T11:08:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/\"},\"wordCount\":2380,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.cybermedian.com\/vn\/wp-content\/uploads\/sites\/14\/2026\/02\/use-case-model-bulletin-board-system.png\",\"articleSection\":[\"Unified Modeling Language\"],\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/\",\"url\":\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/\",\"name\":\"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: C\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng - Cybermedian\",\"isPartOf\":{\"@id\":\"https:\/\/www.cybermedian.com\/vn\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.cybermedian.com\/vn\/wp-content\/uploads\/sites\/14\/2026\/02\/use-case-model-bulletin-board-system.png\",\"datePublished\":\"2025-01-10T05:35:24+00:00\",\"dateModified\":\"2026-04-14T11:08:09+00:00\",\"author\":{\"@id\":\"https:\/\/www.cybermedian.com\/vn\/#\/schema\/person\/0122cdf8fc3b73482dd8a30c8500f75a\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#breadcrumb\"},\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#primaryimage\",\"url\":\"https:\/\/www.cybermedian.com\/vn\/wp-content\/uploads\/sites\/14\/2026\/02\/use-case-model-bulletin-board-system.png\",\"contentUrl\":\"https:\/\/www.cybermedian.com\/vn\/wp-content\/uploads\/sites\/14\/2026\/02\/use-case-model-bulletin-board-system.png\",\"width\":671,\"height\":634},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.cybermedian.com\/vn\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: C\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.cybermedian.com\/vn\/#website\",\"url\":\"https:\/\/www.cybermedian.com\/vn\/\",\"name\":\"Cybermedian\",\"description\":\"H\u1ecdc m\u1ed9t \u0111i\u1ec1u m\u1edbi m\u1ed7i ng\u00e0y\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.cybermedian.com\/vn\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"vi\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.cybermedian.com\/vn\/#\/schema\/person\/0122cdf8fc3b73482dd8a30c8500f75a\",\"name\":\"vpadmin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/www.cybermedian.com\/vn\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/3914788226b9b0af628488720662164f4641c6125d0bd38d90ae34f01c8c4ea3?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/3914788226b9b0af628488720662164f4641c6125d0bd38d90ae34f01c8c4ea3?s=96&d=mm&r=g\",\"caption\":\"vpadmin\"},\"sameAs\":[\"https:\/\/x.com\/vpadmin\"],\"url\":\"https:\/\/www.cybermedian.com\/vn\/author\/vpadmin\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: C\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng - Cybermedian","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/","og_locale":"vi_VN","og_type":"article","og_title":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: C\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng - Cybermedian","og_description":"Gi\u1edbi thi\u1ec7u S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ngl\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 n\u1ec1n t\u1ea3ng trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m v\u00e0 ph\u00e2n","og_url":"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/","og_site_name":"Cybermedian","article_published_time":"2025-01-10T05:35:24+00:00","article_modified_time":"2026-04-14T11:08:09+00:00","og_image":[{"url":"https:\/\/online.visual-paradigm.com\/repository\/images\/b3387898-edd8-4801-b76d-16c753a22ded\/use-case-diagram-design\/use-case-model-bulletin-board-system.png","type":"","width":"","height":""},{"width":671,"height":634,"url":"https:\/\/online.visual-paradigm.com\/repository\/images\/b3387898-edd8-4801-b76d-16c753a22ded\/use-case-diagram-design\/use-case-model-bulletin-board-system.png","type":"image\/png"}],"author":"vpadmin","twitter_card":"summary_large_image","twitter_image":"https:\/\/online.visual-paradigm.com\/repository\/images\/b3387898-edd8-4801-b76d-16c753a22ded\/use-case-diagram-design\/use-case-model-bulletin-board-system.png","twitter_creator":"@vpadmin","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:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#article","isPartOf":{"@id":"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/"},"author":{"name":"vpadmin","@id":"https:\/\/www.cybermedian.com\/vn\/#\/schema\/person\/0122cdf8fc3b73482dd8a30c8500f75a"},"headline":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: C\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng","datePublished":"2025-01-10T05:35:24+00:00","dateModified":"2026-04-14T11:08:09+00:00","mainEntityOfPage":{"@id":"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/"},"wordCount":2380,"commentCount":0,"image":{"@id":"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#primaryimage"},"thumbnailUrl":"https:\/\/www.cybermedian.com\/vn\/wp-content\/uploads\/sites\/14\/2026\/02\/use-case-model-bulletin-board-system.png","articleSection":["Unified Modeling Language"],"inLanguage":"vi","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/","url":"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/","name":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: C\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng - Cybermedian","isPartOf":{"@id":"https:\/\/www.cybermedian.com\/vn\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#primaryimage"},"image":{"@id":"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#primaryimage"},"thumbnailUrl":"https:\/\/www.cybermedian.com\/vn\/wp-content\/uploads\/sites\/14\/2026\/02\/use-case-model-bulletin-board-system.png","datePublished":"2025-01-10T05:35:24+00:00","dateModified":"2026-04-14T11:08:09+00:00","author":{"@id":"https:\/\/www.cybermedian.com\/vn\/#\/schema\/person\/0122cdf8fc3b73482dd8a30c8500f75a"},"breadcrumb":{"@id":"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#breadcrumb"},"inLanguage":"vi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/"]}]},{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#primaryimage","url":"https:\/\/www.cybermedian.com\/vn\/wp-content\/uploads\/sites\/14\/2026\/02\/use-case-model-bulletin-board-system.png","contentUrl":"https:\/\/www.cybermedian.com\/vn\/wp-content\/uploads\/sites\/14\/2026\/02\/use-case-model-bulletin-board-system.png","width":671,"height":634},{"@type":"BreadcrumbList","@id":"https:\/\/www.cybermedian.com\/vn\/understanding-use-case-diagrams-key-concepts-and-applications\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.cybermedian.com\/vn\/"},{"@type":"ListItem","position":2,"name":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: C\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng"}]},{"@type":"WebSite","@id":"https:\/\/www.cybermedian.com\/vn\/#website","url":"https:\/\/www.cybermedian.com\/vn\/","name":"Cybermedian","description":"H\u1ecdc m\u1ed9t \u0111i\u1ec1u m\u1edbi m\u1ed7i ng\u00e0y","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.cybermedian.com\/vn\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"vi"},{"@type":"Person","@id":"https:\/\/www.cybermedian.com\/vn\/#\/schema\/person\/0122cdf8fc3b73482dd8a30c8500f75a","name":"vpadmin","image":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/www.cybermedian.com\/vn\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/3914788226b9b0af628488720662164f4641c6125d0bd38d90ae34f01c8c4ea3?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/3914788226b9b0af628488720662164f4641c6125d0bd38d90ae34f01c8c4ea3?s=96&d=mm&r=g","caption":"vpadmin"},"sameAs":["https:\/\/x.com\/vpadmin"],"url":"https:\/\/www.cybermedian.com\/vn\/author\/vpadmin\/"}]}},"_links":{"self":[{"href":"https:\/\/www.cybermedian.com\/vn\/wp-json\/wp\/v2\/posts\/10681","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cybermedian.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cybermedian.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cybermedian.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cybermedian.com\/vn\/wp-json\/wp\/v2\/comments?post=10681"}],"version-history":[{"count":1,"href":"https:\/\/www.cybermedian.com\/vn\/wp-json\/wp\/v2\/posts\/10681\/revisions"}],"predecessor-version":[{"id":11535,"href":"https:\/\/www.cybermedian.com\/vn\/wp-json\/wp\/v2\/posts\/10681\/revisions\/11535"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cybermedian.com\/vn\/wp-json\/wp\/v2\/media\/10682"}],"wp:attachment":[{"href":"https:\/\/www.cybermedian.com\/vn\/wp-json\/wp\/v2\/media?parent=10681"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cybermedian.com\/vn\/wp-json\/wp\/v2\/categories?post=10681"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cybermedian.com\/vn\/wp-json\/wp\/v2\/tags?post=10681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}