{"id":6590,"date":"2026-02-05T11:15:14","date_gmt":"2026-02-05T03:15:14","guid":{"rendered":"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/"},"modified":"2026-02-05T11:15:14","modified_gmt":"2026-02-05T03:15:14","slug":"class-diagrams-vs-object-diagrams-in-uml","status":"publish","type":"post","link":"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/","title":{"rendered":"S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML"},"content":{"rendered":"<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p>Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML) cung c\u1ea5p m\u1ed9t khung m\u1ea1nh m\u1ebd \u0111\u1ec3 tr\u1ef1c quan h\u00f3a v\u00e0 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. Trong c\u00e1c lo\u1ea1i s\u01a1 \u0111\u1ed3 UML kh\u00e1c nhau, s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a c\u00e1c kh\u00eda c\u1ea1nh kh\u00e1c nhau c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa hai lo\u1ea1i s\u01a1 \u0111\u1ed3 n\u00e0y, khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng t\u1eebng lo\u1ea1i, v\u00e0 ch\u00fang \u0111\u00f3ng g\u00f3p nh\u01b0 th\u1ebf n\u00e0o v\u00e0o vi\u1ec7c hi\u1ec3u to\u00e0n di\u1ec7n v\u1ec1 c\u1ea5u tr\u00fac v\u00e0 h\u00e0nh vi c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. D\u00f9 b\u1ea1n l\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, ki\u1ebfn tr\u00fac s\u01b0 hay \u0111\u01a1n gi\u1ea3n ch\u1ec9 quan t\u00e2m \u0111\u1ebfn thi\u1ebft k\u1ebf ph\u1ea7n m\u1ec1m, h\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd gi\u00fap b\u1ea1n n\u1eafm b\u1eaft nh\u1eefng tinh t\u1ebf c\u1ee7a s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML.<\/p>\n<h2>S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng<\/h2>\n<ol>\n<li><strong>S\u01a1 \u0111\u1ed3 l\u1edbp:<\/strong>\n<ul>\n<li><strong>M\u1ee5c \u0111\u00edch:<\/strong>S\u01a1 \u0111\u1ed3 l\u1edbp ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a c\u1ea5u tr\u00fac t\u0129nh c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. Ch\u00fang th\u1ec3 hi\u1ec7n c\u00e1c l\u1edbp, thu\u1ed9c t\u00ednh, ph\u01b0\u01a1ng th\u1ee9c v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c l\u1edbp.<\/li>\n<li><strong>C\u00e1c th\u00e0nh ph\u1ea7n<\/strong>: S\u01a1 \u0111\u1ed3 l\u1edbp th\u01b0\u1eddng bao g\u1ed3m c\u00e1c l\u1edbp, giao di\u1ec7n, l\u1edbp tr\u1eebu t\u01b0\u1ee3ng, c\u00e1c m\u1ed1i quan h\u1ec7, kh\u00e1i qu\u00e1t h\u00f3a (k\u1ebf th\u1eeba), c\u00e1c ph\u1ee5 thu\u1ed9c v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t b\u1ed9i s\u1ed1.<\/li>\n<li><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/strong>: S\u01a1 \u0111\u1ed3 l\u1edbp h\u1eefu \u00edch trong vi\u1ec7c thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng, x\u00e1c \u0111\u1ecbnh c\u00e1c l\u1edbp v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang, \u0111\u1ed3ng th\u1eddi minh h\u1ecda c\u00e1ch c\u00e1c l\u1edbp kh\u00e1c nhau ph\u1ed1i h\u1ee3p \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>V\u00ed d\u1ee5:<\/strong>Trong m\u1ed9t s\u01a1 \u0111\u1ed3 l\u1edbp, b\u1ea1n c\u00f3 th\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c l\u1edbp nh\u01b0 \u201cXe h\u01a1i\u201d, \u201c\u0110\u1ed9ng c\u01a1\u201d v\u00e0 \u201cB\u00e1nh xe\u201d, hi\u1ec3n th\u1ecb c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 ph\u01b0\u01a1ng th\u1ee9c c\u1ee7a ch\u00fang, c\u0169ng nh\u01b0 c\u00e1c m\u1ed1i quan h\u1ec7 nh\u01b0 \u201cXe h\u01a1i c\u00f3 m\u1ed9t \u0111\u1ed9ng c\u01a1\u201d v\u00e0 \u201cXe h\u01a1i c\u00f3 c\u00e1c b\u00e1nh xe.\u201d<\/li>\n<\/ul>\n<\/li>\n<li><strong>S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng:<\/strong>\n<ul>\n<li><strong>M\u1ee5c \u0111\u00edch:<\/strong>Ng\u01b0\u1ee3c l\u1ea1i, s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng t\u1eadp trung v\u00e0o vi\u1ec7c ghi l\u1ea1i m\u1ed9t b\u1ee9c \u1ea3nh t\u0129nh v\u1ec1 c\u00e1c th\u1ec3 hi\u1ec7n t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y c\u1ee7a c\u00e1c l\u1edbp v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3. Ch\u00fang th\u1ec3 hi\u1ec7n m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang.<\/li>\n<li><strong>C\u00e1c th\u00e0nh ph\u1ea7n<\/strong>: S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng bao g\u1ed3m c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng (th\u1ec3 hi\u1ec7n c\u1ee7a c\u00e1c l\u1edbp), c\u00e1c li\u00ean k\u1ebft (m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng) v\u00e0 c\u00e1c k\u00fd hi\u1ec7u b\u1ed9i s\u1ed1 \u0111\u1ec3 ch\u1ec9 ra s\u1ed1 l\u01b0\u1ee3ng th\u1ec3 hi\u1ec7n tham gia.<\/li>\n<li><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng:<\/strong>S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong ki\u1ec3m th\u1eed, g\u1ee1 l\u1ed7i v\u00e0 t\u00e0i li\u1ec7u h\u00f3a c\u00e1c t\u00ecnh hu\u1ed1ng ho\u1eb7c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3 c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng. Ch\u00fang cho th\u1ea5y c\u00e1ch c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh.<\/li>\n<li><strong>V\u00ed d\u1ee5:<\/strong>Trong m\u1ed9t s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng, b\u1ea1n c\u00f3 th\u1ec3 minh h\u1ecda c\u00e1c th\u1ec3 hi\u1ec7n nh\u01b0 \u201cmyCar\u201d (th\u1ec3 hi\u1ec7n c\u1ee7a l\u1edbp \u201cXe h\u01a1i\u201d) c\u00f9ng v\u1edbi c\u00e1c th\u1ec3 hi\u1ec7n li\u00ean quan \u0111\u1ebfn \u201c\u0110\u1ed9ng c\u01a1\u201d v\u00e0 \u201cB\u00e1nh xe\u201d t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh th\u1ef1c thi h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><img alt=\"Object Diagram Example: Stock Trading\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/09\/11-object-diagram-example-stock-trading.png\"\/><\/p>\n<p>S\u01a1 \u0111\u1ed3 l\u1edbp cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ea5p cao v\u1ec1 c\u1ea5u tr\u00fac c\u1ee7a h\u1ec7 th\u1ed1ng, t\u1eadp trung v\u00e0o m\u1ed1i quan h\u1ec7 v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a c\u00e1c l\u1edbp, trong khi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ee5 th\u1ec3 v\u00e0 th\u1ef1c t\u1ebf h\u01a1n b\u1eb1ng c\u00e1ch minh h\u1ecda c\u00e1c th\u1ec3 hi\u1ec7n v\u00e0 m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y. C\u1ea3 hai s\u01a1 \u0111\u1ed3 \u0111\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 hi\u1ec3u v\u00e0 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m, m\u1ed7i lo\u1ea1i \u0111\u00f3ng m\u1ed9t vai tr\u00f2 ri\u00eang bi\u1ec7t trong qu\u00e1 tr\u00ecnh m\u00f4 h\u00ecnh h\u00f3a UML.<\/p>\n<h2>Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng lo\u1ea1i n\u00e0o?<\/h2>\n<p>Vi\u1ec7c bi\u1ebft khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML ph\u1ee5 thu\u1ed9c v\u00e0o nhu c\u1ea7u m\u00f4 h\u00ecnh h\u00f3a c\u1ee5 th\u1ec3 v\u00e0 giai \u0111o\u1ea1n trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c h\u01b0\u1edbng d\u1eabn v\u1ec1 vi\u1ec7c khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng t\u1eebng lo\u1ea1i s\u01a1 \u0111\u1ed3:<\/p>\n<p><strong>S\u01a1 \u0111\u1ed3 l\u1edbp:<\/strong><\/p>\n<ol>\n<li><strong>Thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng<\/strong>: S\u01a1 \u0111\u1ed3 l\u1edbp th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u1ea5u tr\u00fac c\u1ea5p cao c\u1ee7a h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n. S\u1eed d\u1ee5ng ch\u00fang khi b\u1ea1n mu\u1ed1n minh h\u1ecda c\u00e1c l\u1edbp, thu\u1ed9c t\u00ednh, ph\u01b0\u01a1ng th\u1ee9c v\u00e0 m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang.<\/li>\n<li><strong>L\u00ean k\u1ebf ho\u1ea1ch ki\u1ebfn tr\u00fac<\/strong>: S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u1ec3 l\u00ean k\u1ebf ho\u1ea1ch ki\u1ebfn tr\u00fac t\u1ed5ng th\u1ec3 c\u1ee7a ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n, bao g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh v\u00e0 s\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa ch\u00fang. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 gi\u00fap thi\u1ebft k\u1ebf m\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng v\u00e0 d\u1ec5 b\u1ea3o tr\u00ec.<\/li>\n<li><strong>T\u00e0i li\u1ec7u ph\u1ea7n m\u1ec1m<\/strong>: S\u01a1 \u0111\u1ed3 l\u1edbp r\u1ea5t h\u1eefu \u00edch \u0111\u1ec3 t\u00e0i li\u1ec7u h\u00f3a c\u1ea5u tr\u00fac t\u0129nh c\u1ee7a ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n. Ch\u00fang ph\u1ee5c v\u1ee5 nh\u01b0 m\u1ed9t t\u00e0i li\u1ec7u tham kh\u1ea3o cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, gi\u00fap l\u00e0m r\u00f5 c\u00e1ch c\u00e1c l\u1edbp kh\u00e1c nhau li\u00ean k\u1ebft v\u1edbi nhau v\u00e0 c\u00e1c thu\u1ed9c t\u00ednh c\u0169ng nh\u01b0 ph\u01b0\u01a1ng th\u1ee9c m\u00e0 ch\u00fang s\u1edf h\u1eefu.<\/li>\n<li><strong>Ph\u00e2n t\u00edch h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng<\/strong>: Trong ph\u00e2n t\u00edch h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng, s\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c kh\u00e1i ni\u1ec7m v\u00e0 th\u1ef1c th\u1ec3 trong mi\u1ec1n v\u1ea5n \u0111\u1ec1, gi\u00fap chuy\u1ec3n \u0111\u1ed5i t\u1eeb y\u00eau c\u1ea7u sang thi\u1ebft k\u1ebf.<\/li>\n<li><strong>T\u1ea1o m\u00e3<\/strong>: S\u01a1 \u0111\u1ed3 l\u1edbp c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 \u0111\u1ea7u v\u00e0o cho c\u00e1c c\u00f4ng c\u1ee5 t\u1ea1o m\u00e3, trong \u0111\u00f3 m\u00e3 \u0111\u01b0\u1ee3c sinh ra d\u1ef1a tr\u00ean \u0111\u1ecbnh ngh\u0129a l\u1edbp v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong s\u01a1 \u0111\u1ed3.<\/li>\n<\/ol>\n<p><strong>S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng:<\/strong><\/p>\n<ol>\n<li><strong>Ki\u1ec3m th\u1eed v\u00e0 g\u1ee1 l\u1ed7i<\/strong>: S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong c\u00e1c giai \u0111o\u1ea1n ki\u1ec3m th\u1eed v\u00e0 g\u1ee1 l\u1ed7i. Ch\u00fang cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ee5 th\u1ec3 v\u1ec1 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c c\u1ee7a ch\u00fang t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3, gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 c\u00e1ch c\u00e1c th\u1ec3 hi\u1ec7n h\u1ee3p t\u00e1c v\u1edbi nhau trong c\u00e1c t\u00ecnh hu\u1ed1ng ch\u1ea1y ch\u01b0\u01a1ng tr\u00ecnh.<\/li>\n<li><strong>Minh h\u1ecda t\u00ecnh hu\u1ed1ng<\/strong>: S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1ec3 minh h\u1ecda c\u00e1c t\u00ecnh hu\u1ed1ng ho\u1eb7c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3 trong ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n. \u0110i\u1ec1u n\u00e0y gi\u00fap h\u00ecnh dung v\u00e0 truy\u1ec1n \u0111\u1ea1t c\u00e1ch c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c trong c\u00e1c t\u00ecnh hu\u1ed1ng kh\u00e1c nhau.<\/li>\n<li><strong>Tr\u1ef1c quan h\u00f3a d\u1eef li\u1ec7u<\/strong>: Khi b\u1ea1n c\u1ea7n tr\u1ef1c quan h\u00f3a d\u1eef li\u1ec7u th\u1ef1c t\u1ebf trong b\u1ed9 nh\u1edb ho\u1eb7c hi\u1ec3u c\u00e1ch d\u1eef li\u1ec7u ch\u1ea3y gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng, s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 r\u1ea5t h\u1eefu \u00edch.<\/li>\n<li><strong>\u0110\u1ed3ng th\u1eddi v\u00e0 song song<\/strong>: Trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ed3ng th\u1eddi ho\u1eb7c song song, s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 gi\u00fap bi\u1ec3u di\u1ec5n tr\u1ea1ng th\u00e1i c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang t\u1ea1i c\u00e1c th\u1eddi \u0111i\u1ec3m kh\u00e1c nhau, h\u1ed7 tr\u1ee3 vi\u1ec7c ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 \u0111\u1ed3ng b\u1ed9 h\u00f3a.<\/li>\n<li><strong>T\u00e0i li\u1ec7u h\u00f3a c\u00e1c th\u1ec3 hi\u1ec7n<\/strong>: S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u00e0i li\u1ec7u h\u00f3a c\u00e1c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3 quan tr\u1ecdng, th\u1ec3 hi\u1ec7n c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang \u0111\u1ec3 tham kh\u1ea3o ho\u1eb7c th\u1ea3o lu\u1eadn.<\/li>\n<\/ol>\n<p>Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, b\u1ea1n s\u1ebd s\u1eed d\u1ee5ng c\u1ea3 s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f9ng v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 UML kh\u00e1c nh\u01b0 s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1, s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u00e0 s\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec3 cung c\u1ea5p c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n d\u01b0\u1edbi c\u1ea3 g\u00f3c \u0111\u1ed9 c\u1ea5u tr\u00fac v\u00e0 h\u00e0nh vi. Vi\u1ec7c l\u1ef1a ch\u1ecdn s\u01a1 \u0111\u1ed3 n\u00e0o \u0111\u1ec3 s\u1eed d\u1ee5ng ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ee5c ti\u00eau m\u00f4 h\u00ecnh h\u00f3a hi\u1ec7n t\u1ea1i v\u00e0 th\u00f4ng tin c\u1ee5 th\u1ec3 b\u1ea1n mu\u1ed1n truy\u1ec1n \u0111\u1ea1t.<\/p>\n<h2>So s\u00e1nh s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML<\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t b\u1ea3ng chi ti\u1ebft so s\u00e1nh s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML:<\/p>\n<table>\n<thead>\n<tr>\n<th>Kh\u00eda c\u1ea1nh<\/th>\n<th>S\u01a1 \u0111\u1ed3 l\u1edbp<\/th>\n<th>S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>M\u1ee5c \u0111\u00edch<\/strong><\/td>\n<td>Bi\u1ec3u di\u1ec5n c\u1ea5u tr\u00fac t\u0129nh c\u1ee7a h\u1ec7 th\u1ed1ng, hi\u1ec3n th\u1ecb c\u00e1c l\u1edbp, thu\u1ed9c t\u00ednh, ph\u01b0\u01a1ng th\u1ee9c v\u00e0 m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang.<\/td>\n<td>Tr\u00ecnh b\u00e0y m\u1ed9t b\u1ee9c \u1ea3nh ch\u1ee5p c\u1ee5 th\u1ec3 v\u1ec1 c\u00e1c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3 c\u1ee7a l\u1edbp v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh.<\/td>\n<\/tr>\n<tr>\n<td><strong>Tr\u1ecdng t\u00e2m<\/strong><\/td>\n<td>Thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng c\u1ea5p cao, l\u1eadp k\u1ebf ho\u1ea1ch ki\u1ebfn tr\u00fac, c\u1ea5u tr\u00fac t\u0129nh.<\/td>\n<td>C\u00e1c t\u00ecnh hu\u1ed1ng ch\u1ea1y ch\u01b0\u01a1ng tr\u00ecnh c\u1ee5 th\u1ec3, ki\u1ec3m th\u1eed, g\u1ee1 l\u1ed7i v\u00e0 tr\u1ef1c quan h\u00f3a th\u1ec3 hi\u1ec7n.<\/td>\n<\/tr>\n<tr>\n<td><strong>C\u00e1c th\u00e0nh ph\u1ea7n<\/strong><\/td>\n<td>L\u1edbp, giao di\u1ec7n, l\u1edbp tr\u1eebu t\u01b0\u1ee3ng, li\u00ean k\u1ebft, t\u1ed5ng qu\u00e1t h\u00f3a, ph\u1ee5 thu\u1ed9c, b\u1ed9i s\u1ed1.<\/td>\n<td>\u0110\u1ed1i t\u01b0\u1ee3ng (th\u1ec3 hi\u1ec7n c\u1ee7a l\u1edbp), li\u00ean k\u1ebft (li\u00ean k\u1ebft gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng), k\u00fd hi\u1ec7u b\u1ed9i s\u1ed1.<\/td>\n<\/tr>\n<tr>\n<td><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/strong><\/td>\n<td>\u2013 Thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng t\u1ed5ng th\u1ec3. \u2013 T\u00e0i li\u1ec7u h\u00f3a c\u1ea5u tr\u00fac l\u1edbp. \u2013 Sinh m\u00e3.<\/td>\n<td>\u2013 Ki\u1ec3m th\u1eed v\u00e0 g\u1ee1 l\u1ed7i. \u2013 Minh h\u1ecda c\u00e1c t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3. \u2013 Tr\u1ef1c quan h\u00f3a d\u1eef li\u1ec7u.<\/td>\n<\/tr>\n<tr>\n<td><strong>G\u00f3c nh\u00ecn th\u1eddi gian<\/strong><\/td>\n<td>G\u00f3c nh\u00ecn t\u0129nh v\u1ec1 c\u1ea5u tr\u00fac h\u1ec7 th\u1ed1ng, kh\u00f4ng ghi l\u1ea1i c\u00e1c th\u1ec3 hi\u1ec7n t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y.<\/td>\n<td>B\u1ee9c \u1ea3nh ch\u1ee5p c\u00e1c th\u1ec3 hi\u1ec7n t\u1ea1i th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh th\u1ef1c thi h\u1ec7 th\u1ed1ng.<\/td>\n<\/tr>\n<tr>\n<td><strong>Bi\u1ec3u di\u1ec5n t\u00ecnh hu\u1ed1ng<\/strong><\/td>\n<td>Kh\u00f4ng bi\u1ec3u di\u1ec5n c\u00e1c t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3 t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y; t\u1eadp trung v\u00e0o c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa l\u1edbp.<\/td>\n<td>Bi\u1ec3u di\u1ec5n c\u00e1c t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3 t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y, cho th\u1ea5y c\u00e1ch c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng h\u1ee3p t\u00e1c t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh.<\/td>\n<\/tr>\n<tr>\n<td><strong>Chi ti\u1ebft th\u1ec3 hi\u1ec7n<\/strong><\/td>\n<td>Kh\u00f4ng cung c\u1ea5p chi ti\u1ebft v\u1ec1 c\u00e1c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3; t\u1eadp trung v\u00e0o thu\u1ed9c t\u00ednh v\u00e0 ph\u01b0\u01a1ng th\u1ee9c \u1edf c\u1ea5p l\u1edbp.<\/td>\n<td>Cung c\u1ea5p chi ti\u1ebft v\u1ec1 c\u00e1c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3, bao g\u1ed3m gi\u00e1 tr\u1ecb thu\u1ed9c t\u00ednh v\u00e0 m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang.<\/td>\n<\/tr>\n<tr>\n<td><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn<\/strong><\/td>\n<td>\u2013 Thi\u1ebft k\u1ebf c\u00e1c c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p l\u1edbp. \u2013 X\u00e1c \u0111\u1ecbnh thu\u1ed9c t\u00ednh v\u00e0 ph\u01b0\u01a1ng th\u1ee9c c\u1ee7a l\u1edbp. \u2013 M\u00f4 h\u00ecnh h\u00f3a m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c l\u1edbp (li\u00ean k\u1ebft, k\u1ebf th\u1eeba, ph\u1ee5 thu\u1ed9c).<\/td>\n<td>\u2013 G\u1ee1 l\u1ed7i v\u00e0 kh\u1eafc ph\u1ee5c c\u00e1c v\u1ea5n \u0111\u1ec1 c\u1ee5 th\u1ec3 t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y. \u2013 Minh h\u1ecda c\u00e1ch c\u00e1c th\u1ec3 hi\u1ec7n t\u01b0\u01a1ng t\u00e1c trong m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3.<\/td>\n<\/tr>\n<tr>\n<td><strong>Giai \u0111o\u1ea1n v\u00f2ng \u0111\u1eddi<\/strong><\/td>\n<td>Thi\u1ebft k\u1ebf v\u00e0 ph\u00e1t tri\u1ec3n h\u1ec7 th\u1ed1ng.<\/td>\n<td>Giai \u0111o\u1ea1n ki\u1ec3m th\u1eed v\u00e0 g\u1ee1 l\u1ed7i.<\/td>\n<\/tr>\n<tr>\n<td><strong>V\u00ed d\u1ee5<\/strong><\/td>\n<td>\u2013 L\u1edbp \u201cCar\u201d v\u1edbi c\u00e1c thu\u1ed9c t\u00ednh nh\u01b0 \u201ccolor\u201d v\u00e0 c\u00e1c ph\u01b0\u01a1ng th\u1ee9c nh\u01b0 \u201cstartEngine\u201d. \u2013 C\u00e1c m\u1ed1i quan h\u1ec7 nh\u01b0 \u201cCar c\u00f3 m\u1ed9t Engine\u201d.<\/td>\n<td>\u2013 \u0110\u1ed1i t\u01b0\u1ee3ng \u201cmyCar\u201d l\u00e0 th\u1ec3 hi\u1ec7n c\u1ee7a l\u1edbp \u201cCar\u201d v\u1edbi m\u00e0u s\u1eafc v\u00e0 tr\u1ea1ng th\u00e1i c\u1ee5 th\u1ec3. \u2013 C\u00e1c m\u1ed1i quan h\u1ec7 th\u1ec3 hi\u1ec7n c\u00e1ch \u201cmyCar\u201d h\u1ee3p t\u00e1c v\u1edbi c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>T\u00f3m t\u1eaft<\/h2>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/tw\/diagrams\/tutorials\/class-diagram-tutorial\/\">S\u01a1 \u0111\u1ed3 l\u1edbp<\/a>\u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u00f4ng c\u1ee5 n\u1ec1n t\u1ea3ng \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u1ea5u tr\u00fac t\u0129nh c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m, minh h\u1ecda c\u00e1c l\u1edbp, thu\u1ed9c t\u00ednh, ph\u01b0\u01a1ng th\u1ee9c v\u00e0 m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang. Ch\u00fang \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, l\u1eadp k\u1ebf ho\u1ea1ch ki\u1ebfn tr\u00fac v\u00e0 sinh m\u00e3. M\u1eb7t kh\u00e1c, <a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-object-diagram\/\">s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng<\/a>t\u1eadp trung v\u00e0o vi\u1ec7c ghi l\u1ea1i c\u00e1c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3 c\u1ee7a l\u1edbp v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c c\u1ee7a ch\u00fang t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y, l\u00e0m cho ch\u00fang v\u00f4 gi\u00e1 trong ki\u1ec3m th\u1eed, g\u1ee1 l\u1ed7i v\u00e0 minh h\u1ecda c\u00e1c t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf. B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 m\u1ee5c \u0111\u00edch v\u00e0 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a c\u1ea3 s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng, b\u1ea1n c\u00f3 th\u1ec3 t\u1eadn d\u1ee5ng hi\u1ec7u qu\u1ea3 c\u00e1c c\u00f4ng c\u1ee5 UML n\u00e0y \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a v\u00e0 truy\u1ec1n \u0111\u1ea1t nhi\u1ec1u kh\u00eda c\u1ea1nh kh\u00e1c nhau trong c\u00e1c d\u1ef1 \u00e1n ph\u1ea7n m\u1ec1m c\u1ee7a m\u00ecnh.<\/p>\n<p>\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gi\u1edbi thi\u1ec7u Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML) cung c\u1ea5p m\u1ed9t khung m\u1ea1nh m\u1ebd \u0111\u1ec3 tr\u1ef1c quan h\u00f3a v\u00e0 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. Trong c\u00e1c lo\u1ea1i s\u01a1 \u0111\u1ed3 UML kh\u00e1c nhau, s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a c\u00e1c kh\u00eda c\u1ea1nh kh\u00e1c nhau c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa hai lo\u1ea1i s\u01a1 \u0111\u1ed3 n\u00e0y, khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng t\u1eebng lo\u1ea1i, v\u00e0 ch\u00fang \u0111\u00f3ng g\u00f3p nh\u01b0 th\u1ebf n\u00e0o v\u00e0o vi\u1ec7c hi\u1ec3u to\u00e0n di\u1ec7n v\u1ec1 c\u1ea5u tr\u00fac v\u00e0 h\u00e0nh vi c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. D\u00f9 b\u1ea1n l\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, ki\u1ebfn tr\u00fac s\u01b0 hay \u0111\u01a1n gi\u1ea3n ch\u1ec9 quan t\u00e2m \u0111\u1ebfn thi\u1ebft k\u1ebf ph\u1ea7n m\u1ec1m, h\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd gi\u00fap b\u1ea1n n\u1eafm b\u1eaft nh\u1eefng tinh t\u1ebf c\u1ee7a s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML. S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng S\u01a1 \u0111\u1ed3 l\u1edbp: M\u1ee5c \u0111\u00edch:S\u01a1 \u0111\u1ed3 l\u1edbp ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a c\u1ea5u tr\u00fac t\u0129nh c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. Ch\u00fang th\u1ec3 hi\u1ec7n c\u00e1c l\u1edbp, thu\u1ed9c t\u00ednh, ph\u01b0\u01a1ng th\u1ee9c v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c l\u1edbp. C\u00e1c th\u00e0nh ph\u1ea7n: S\u01a1 \u0111\u1ed3 l\u1edbp th\u01b0\u1eddng bao g\u1ed3m c\u00e1c l\u1edbp, giao di\u1ec7n, l\u1edbp tr\u1eebu t\u01b0\u1ee3ng, c\u00e1c m\u1ed1i quan h\u1ec7, kh\u00e1i qu\u00e1t h\u00f3a (k\u1ebf th\u1eeba), c\u00e1c ph\u1ee5 thu\u1ed9c v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t b\u1ed9i s\u1ed1. C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: S\u01a1 \u0111\u1ed3 l\u1edbp h\u1eefu \u00edch trong vi\u1ec7c thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng, x\u00e1c \u0111\u1ecbnh c\u00e1c l\u1edbp v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang, \u0111\u1ed3ng th\u1eddi minh h\u1ecda c\u00e1ch c\u00e1c l\u1edbp kh\u00e1c nhau ph\u1ed1i h\u1ee3p \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. V\u00ed d\u1ee5:Trong m\u1ed9t s\u01a1 \u0111\u1ed3 l\u1edbp, b\u1ea1n c\u00f3 th\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c l\u1edbp nh\u01b0 \u201cXe h\u01a1i\u201d, \u201c\u0110\u1ed9ng c\u01a1\u201d v\u00e0 \u201cB\u00e1nh xe\u201d, hi\u1ec3n th\u1ecb c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 ph\u01b0\u01a1ng th\u1ee9c c\u1ee7a ch\u00fang, c\u0169ng nh\u01b0 c\u00e1c m\u1ed1i quan h\u1ec7 nh\u01b0 \u201cXe h\u01a1i c\u00f3 m\u1ed9t \u0111\u1ed9ng c\u01a1\u201d v\u00e0 \u201cXe h\u01a1i c\u00f3 c\u00e1c b\u00e1nh xe.\u201d S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng: M\u1ee5c \u0111\u00edch:Ng\u01b0\u1ee3c l\u1ea1i, s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng t\u1eadp trung v\u00e0o vi\u1ec7c ghi l\u1ea1i m\u1ed9t b\u1ee9c \u1ea3nh t\u0129nh v\u1ec1 c\u00e1c th\u1ec3 hi\u1ec7n t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y c\u1ee7a c\u00e1c l\u1edbp v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3. Ch\u00fang th\u1ec3 hi\u1ec7n m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang. C\u00e1c th\u00e0nh ph\u1ea7n: S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng bao g\u1ed3m c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng (th\u1ec3 hi\u1ec7n c\u1ee7a c\u00e1c l\u1edbp), c\u00e1c li\u00ean k\u1ebft (m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng) v\u00e0 c\u00e1c k\u00fd hi\u1ec7u b\u1ed9i s\u1ed1 \u0111\u1ec3 ch\u1ec9 ra s\u1ed1 l\u01b0\u1ee3ng th\u1ec3 hi\u1ec7n tham gia. C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng:S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong ki\u1ec3m th\u1eed, g\u1ee1 l\u1ed7i v\u00e0 t\u00e0i li\u1ec7u h\u00f3a c\u00e1c t\u00ecnh hu\u1ed1ng ho\u1eb7c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3 c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng. Ch\u00fang cho th\u1ea5y c\u00e1ch c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh. V\u00ed d\u1ee5:Trong m\u1ed9t s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng, b\u1ea1n c\u00f3 th\u1ec3 minh h\u1ecda c\u00e1c th\u1ec3 hi\u1ec7n nh\u01b0 \u201cmyCar\u201d (th\u1ec3 hi\u1ec7n c\u1ee7a l\u1edbp \u201cXe h\u01a1i\u201d) c\u00f9ng v\u1edbi c\u00e1c th\u1ec3 hi\u1ec7n li\u00ean quan \u0111\u1ebfn \u201c\u0110\u1ed9ng c\u01a1\u201d v\u00e0 \u201cB\u00e1nh xe\u201d t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh th\u1ef1c thi h\u1ec7 th\u1ed1ng. S\u01a1 \u0111\u1ed3 l\u1edbp cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ea5p cao v\u1ec1 c\u1ea5u tr\u00fac c\u1ee7a h\u1ec7 th\u1ed1ng, t\u1eadp trung v\u00e0o m\u1ed1i quan h\u1ec7 v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a c\u00e1c l\u1edbp, trong khi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ee5 th\u1ec3 v\u00e0 th\u1ef1c t\u1ebf h\u01a1n b\u1eb1ng c\u00e1ch minh h\u1ecda c\u00e1c th\u1ec3 hi\u1ec7n v\u00e0 m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y. C\u1ea3 hai s\u01a1 \u0111\u1ed3 \u0111\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 hi\u1ec3u v\u00e0 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m, m\u1ed7i lo\u1ea1i \u0111\u00f3ng m\u1ed9t vai tr\u00f2 ri\u00eang bi\u1ec7t trong qu\u00e1 tr\u00ecnh m\u00f4 h\u00ecnh h\u00f3a UML. Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng lo\u1ea1i n\u00e0o? Vi\u1ec7c bi\u1ebft khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML ph\u1ee5 thu\u1ed9c v\u00e0o nhu c\u1ea7u m\u00f4 h\u00ecnh h\u00f3a c\u1ee5 th\u1ec3 v\u00e0 giai \u0111o\u1ea1n trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c h\u01b0\u1edbng d\u1eabn v\u1ec1 vi\u1ec7c khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng t\u1eebng lo\u1ea1i s\u01a1 \u0111\u1ed3: S\u01a1 \u0111\u1ed3 l\u1edbp: Thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng: S\u01a1 \u0111\u1ed3 l\u1edbp th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u1ea5u tr\u00fac c\u1ea5p cao c\u1ee7a h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n. S\u1eed d\u1ee5ng ch\u00fang khi b\u1ea1n mu\u1ed1n minh h\u1ecda c\u00e1c l\u1edbp, thu\u1ed9c t\u00ednh, ph\u01b0\u01a1ng th\u1ee9c v\u00e0 m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang. L\u00ean k\u1ebf ho\u1ea1ch ki\u1ebfn tr\u00fac: S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u1ec3 l\u00ean k\u1ebf ho\u1ea1ch ki\u1ebfn tr\u00fac t\u1ed5ng th\u1ec3 c\u1ee7a ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n, bao g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh v\u00e0 s\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa ch\u00fang. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 gi\u00fap thi\u1ebft k\u1ebf m\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng v\u00e0 d\u1ec5 b\u1ea3o tr\u00ec. T\u00e0i li\u1ec7u ph\u1ea7n m\u1ec1m: S\u01a1 \u0111\u1ed3 l\u1edbp r\u1ea5t h\u1eefu \u00edch \u0111\u1ec3 t\u00e0i li\u1ec7u h\u00f3a c\u1ea5u tr\u00fac t\u0129nh c\u1ee7a ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n. Ch\u00fang ph\u1ee5c v\u1ee5 nh\u01b0 m\u1ed9t t\u00e0i li\u1ec7u tham kh\u1ea3o cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, gi\u00fap l\u00e0m r\u00f5 c\u00e1ch c\u00e1c l\u1edbp kh\u00e1c nhau li\u00ean k\u1ebft v\u1edbi nhau v\u00e0 c\u00e1c thu\u1ed9c t\u00ednh c\u0169ng nh\u01b0 ph\u01b0\u01a1ng th\u1ee9c m\u00e0 ch\u00fang s\u1edf h\u1eefu. Ph\u00e2n t\u00edch h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng: Trong ph\u00e2n t\u00edch h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng, s\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c kh\u00e1i ni\u1ec7m v\u00e0 th\u1ef1c th\u1ec3 trong mi\u1ec1n v\u1ea5n \u0111\u1ec1, gi\u00fap chuy\u1ec3n \u0111\u1ed5i t\u1eeb y\u00eau c\u1ea7u sang thi\u1ebft k\u1ebf. T\u1ea1o m\u00e3: S\u01a1 \u0111\u1ed3 l\u1edbp c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 \u0111\u1ea7u v\u00e0o cho c\u00e1c c\u00f4ng c\u1ee5 t\u1ea1o m\u00e3, trong \u0111\u00f3 m\u00e3 \u0111\u01b0\u1ee3c sinh ra d\u1ef1a tr\u00ean \u0111\u1ecbnh ngh\u0129a l\u1edbp v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong s\u01a1 \u0111\u1ed3. S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng: Ki\u1ec3m th\u1eed v\u00e0 g\u1ee1 l\u1ed7i: S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong c\u00e1c giai \u0111o\u1ea1n ki\u1ec3m th\u1eed v\u00e0 g\u1ee1 l\u1ed7i. Ch\u00fang cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ee5 th\u1ec3 v\u1ec1 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c c\u1ee7a ch\u00fang t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3, gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 c\u00e1ch<a href=\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/\" rel=\"bookmark\"><span class=\"screen-reader-text\">S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":6591,"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-6590","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>S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML - 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\/class-diagrams-vs-object-diagrams-in-uml\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML - Visual Paradigm Guides Vietnamese\" \/>\n<meta property=\"og:description\" content=\"Gi\u1edbi thi\u1ec7u Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML) cung c\u1ea5p m\u1ed9t khung m\u1ea1nh m\u1ebd \u0111\u1ec3 tr\u1ef1c quan h\u00f3a v\u00e0 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. Trong c\u00e1c lo\u1ea1i s\u01a1 \u0111\u1ed3 UML kh\u00e1c nhau, s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a c\u00e1c kh\u00eda c\u1ea1nh kh\u00e1c nhau c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa hai lo\u1ea1i s\u01a1 \u0111\u1ed3 n\u00e0y, khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng t\u1eebng lo\u1ea1i, v\u00e0 ch\u00fang \u0111\u00f3ng g\u00f3p nh\u01b0 th\u1ebf n\u00e0o v\u00e0o vi\u1ec7c hi\u1ec3u to\u00e0n di\u1ec7n v\u1ec1 c\u1ea5u tr\u00fac v\u00e0 h\u00e0nh vi c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. D\u00f9 b\u1ea1n l\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, ki\u1ebfn tr\u00fac s\u01b0 hay \u0111\u01a1n gi\u1ea3n ch\u1ec9 quan t\u00e2m \u0111\u1ebfn thi\u1ebft k\u1ebf ph\u1ea7n m\u1ec1m, h\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd gi\u00fap b\u1ea1n n\u1eafm b\u1eaft nh\u1eefng tinh t\u1ebf c\u1ee7a s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML. S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng S\u01a1 \u0111\u1ed3 l\u1edbp: M\u1ee5c \u0111\u00edch:S\u01a1 \u0111\u1ed3 l\u1edbp ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a c\u1ea5u tr\u00fac t\u0129nh c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. Ch\u00fang th\u1ec3 hi\u1ec7n c\u00e1c l\u1edbp, thu\u1ed9c t\u00ednh, ph\u01b0\u01a1ng th\u1ee9c v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c l\u1edbp. C\u00e1c th\u00e0nh ph\u1ea7n: S\u01a1 \u0111\u1ed3 l\u1edbp th\u01b0\u1eddng bao g\u1ed3m c\u00e1c l\u1edbp, giao di\u1ec7n, l\u1edbp tr\u1eebu t\u01b0\u1ee3ng, c\u00e1c m\u1ed1i quan h\u1ec7, kh\u00e1i qu\u00e1t h\u00f3a (k\u1ebf th\u1eeba), c\u00e1c ph\u1ee5 thu\u1ed9c v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t b\u1ed9i s\u1ed1. C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: S\u01a1 \u0111\u1ed3 l\u1edbp h\u1eefu \u00edch trong vi\u1ec7c thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng, x\u00e1c \u0111\u1ecbnh c\u00e1c l\u1edbp v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang, \u0111\u1ed3ng th\u1eddi minh h\u1ecda c\u00e1ch c\u00e1c l\u1edbp kh\u00e1c nhau ph\u1ed1i h\u1ee3p \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. V\u00ed d\u1ee5:Trong m\u1ed9t s\u01a1 \u0111\u1ed3 l\u1edbp, b\u1ea1n c\u00f3 th\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c l\u1edbp nh\u01b0 \u201cXe h\u01a1i\u201d, \u201c\u0110\u1ed9ng c\u01a1\u201d v\u00e0 \u201cB\u00e1nh xe\u201d, hi\u1ec3n th\u1ecb c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 ph\u01b0\u01a1ng th\u1ee9c c\u1ee7a ch\u00fang, c\u0169ng nh\u01b0 c\u00e1c m\u1ed1i quan h\u1ec7 nh\u01b0 \u201cXe h\u01a1i c\u00f3 m\u1ed9t \u0111\u1ed9ng c\u01a1\u201d v\u00e0 \u201cXe h\u01a1i c\u00f3 c\u00e1c b\u00e1nh xe.\u201d S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng: M\u1ee5c \u0111\u00edch:Ng\u01b0\u1ee3c l\u1ea1i, s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng t\u1eadp trung v\u00e0o vi\u1ec7c ghi l\u1ea1i m\u1ed9t b\u1ee9c \u1ea3nh t\u0129nh v\u1ec1 c\u00e1c th\u1ec3 hi\u1ec7n t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y c\u1ee7a c\u00e1c l\u1edbp v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3. Ch\u00fang th\u1ec3 hi\u1ec7n m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang. C\u00e1c th\u00e0nh ph\u1ea7n: S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng bao g\u1ed3m c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng (th\u1ec3 hi\u1ec7n c\u1ee7a c\u00e1c l\u1edbp), c\u00e1c li\u00ean k\u1ebft (m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng) v\u00e0 c\u00e1c k\u00fd hi\u1ec7u b\u1ed9i s\u1ed1 \u0111\u1ec3 ch\u1ec9 ra s\u1ed1 l\u01b0\u1ee3ng th\u1ec3 hi\u1ec7n tham gia. C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng:S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong ki\u1ec3m th\u1eed, g\u1ee1 l\u1ed7i v\u00e0 t\u00e0i li\u1ec7u h\u00f3a c\u00e1c t\u00ecnh hu\u1ed1ng ho\u1eb7c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3 c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng. Ch\u00fang cho th\u1ea5y c\u00e1ch c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh. V\u00ed d\u1ee5:Trong m\u1ed9t s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng, b\u1ea1n c\u00f3 th\u1ec3 minh h\u1ecda c\u00e1c th\u1ec3 hi\u1ec7n nh\u01b0 \u201cmyCar\u201d (th\u1ec3 hi\u1ec7n c\u1ee7a l\u1edbp \u201cXe h\u01a1i\u201d) c\u00f9ng v\u1edbi c\u00e1c th\u1ec3 hi\u1ec7n li\u00ean quan \u0111\u1ebfn \u201c\u0110\u1ed9ng c\u01a1\u201d v\u00e0 \u201cB\u00e1nh xe\u201d t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh th\u1ef1c thi h\u1ec7 th\u1ed1ng. S\u01a1 \u0111\u1ed3 l\u1edbp cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ea5p cao v\u1ec1 c\u1ea5u tr\u00fac c\u1ee7a h\u1ec7 th\u1ed1ng, t\u1eadp trung v\u00e0o m\u1ed1i quan h\u1ec7 v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a c\u00e1c l\u1edbp, trong khi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ee5 th\u1ec3 v\u00e0 th\u1ef1c t\u1ebf h\u01a1n b\u1eb1ng c\u00e1ch minh h\u1ecda c\u00e1c th\u1ec3 hi\u1ec7n v\u00e0 m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y. C\u1ea3 hai s\u01a1 \u0111\u1ed3 \u0111\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 hi\u1ec3u v\u00e0 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m, m\u1ed7i lo\u1ea1i \u0111\u00f3ng m\u1ed9t vai tr\u00f2 ri\u00eang bi\u1ec7t trong qu\u00e1 tr\u00ecnh m\u00f4 h\u00ecnh h\u00f3a UML. Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng lo\u1ea1i n\u00e0o? Vi\u1ec7c bi\u1ebft khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML ph\u1ee5 thu\u1ed9c v\u00e0o nhu c\u1ea7u m\u00f4 h\u00ecnh h\u00f3a c\u1ee5 th\u1ec3 v\u00e0 giai \u0111o\u1ea1n trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c h\u01b0\u1edbng d\u1eabn v\u1ec1 vi\u1ec7c khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng t\u1eebng lo\u1ea1i s\u01a1 \u0111\u1ed3: S\u01a1 \u0111\u1ed3 l\u1edbp: Thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng: S\u01a1 \u0111\u1ed3 l\u1edbp th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u1ea5u tr\u00fac c\u1ea5p cao c\u1ee7a h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n. S\u1eed d\u1ee5ng ch\u00fang khi b\u1ea1n mu\u1ed1n minh h\u1ecda c\u00e1c l\u1edbp, thu\u1ed9c t\u00ednh, ph\u01b0\u01a1ng th\u1ee9c v\u00e0 m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang. L\u00ean k\u1ebf ho\u1ea1ch ki\u1ebfn tr\u00fac: S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u1ec3 l\u00ean k\u1ebf ho\u1ea1ch ki\u1ebfn tr\u00fac t\u1ed5ng th\u1ec3 c\u1ee7a ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n, bao g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh v\u00e0 s\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa ch\u00fang. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 gi\u00fap thi\u1ebft k\u1ebf m\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng v\u00e0 d\u1ec5 b\u1ea3o tr\u00ec. T\u00e0i li\u1ec7u ph\u1ea7n m\u1ec1m: S\u01a1 \u0111\u1ed3 l\u1edbp r\u1ea5t h\u1eefu \u00edch \u0111\u1ec3 t\u00e0i li\u1ec7u h\u00f3a c\u1ea5u tr\u00fac t\u0129nh c\u1ee7a ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n. Ch\u00fang ph\u1ee5c v\u1ee5 nh\u01b0 m\u1ed9t t\u00e0i li\u1ec7u tham kh\u1ea3o cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, gi\u00fap l\u00e0m r\u00f5 c\u00e1ch c\u00e1c l\u1edbp kh\u00e1c nhau li\u00ean k\u1ebft v\u1edbi nhau v\u00e0 c\u00e1c thu\u1ed9c t\u00ednh c\u0169ng nh\u01b0 ph\u01b0\u01a1ng th\u1ee9c m\u00e0 ch\u00fang s\u1edf h\u1eefu. Ph\u00e2n t\u00edch h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng: Trong ph\u00e2n t\u00edch h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng, s\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c kh\u00e1i ni\u1ec7m v\u00e0 th\u1ef1c th\u1ec3 trong mi\u1ec1n v\u1ea5n \u0111\u1ec1, gi\u00fap chuy\u1ec3n \u0111\u1ed5i t\u1eeb y\u00eau c\u1ea7u sang thi\u1ebft k\u1ebf. T\u1ea1o m\u00e3: S\u01a1 \u0111\u1ed3 l\u1edbp c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 \u0111\u1ea7u v\u00e0o cho c\u00e1c c\u00f4ng c\u1ee5 t\u1ea1o m\u00e3, trong \u0111\u00f3 m\u00e3 \u0111\u01b0\u1ee3c sinh ra d\u1ef1a tr\u00ean \u0111\u1ecbnh ngh\u0129a l\u1edbp v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong s\u01a1 \u0111\u1ed3. S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng: Ki\u1ec3m th\u1eed v\u00e0 g\u1ee1 l\u1ed7i: S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong c\u00e1c giai \u0111o\u1ea1n ki\u1ec3m th\u1eed v\u00e0 g\u1ee1 l\u1ed7i. Ch\u00fang cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ee5 th\u1ec3 v\u1ec1 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c c\u1ee7a ch\u00fang t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3, gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 c\u00e1chS\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML\" \/>\n<meta property=\"og:url\" content=\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/\" \/>\n<meta property=\"og:site_name\" content=\"Visual Paradigm Guides Vietnamese\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-05T03:15:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/guides.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/02\/img_650173b5e9772.png\" \/>\n\t<meta property=\"og:image:width\" content=\"716\" \/>\n\t<meta property=\"og:image:height\" content=\"748\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\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=\"6 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/\"},\"headline\":\"S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML\",\"datePublished\":\"2026-02-05T03:15:14+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/\"},\"wordCount\":3015,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/guides.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/02\/img_650173b5e9772.png\",\"articleSection\":[\"UML\",\"Visual Modeling\"],\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/\",\"url\":\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/\",\"name\":\"S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML - Visual Paradigm Guides Vietnamese\",\"isPartOf\":{\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/guides.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/02\/img_650173b5e9772.png\",\"datePublished\":\"2026-02-05T03:15:14+00:00\",\"author\":{\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/#\/schema\/person\/292e97a06c90d6d605ddfd451bfdfe6f\"},\"breadcrumb\":{\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#breadcrumb\"},\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#primaryimage\",\"url\":\"https:\/\/guides.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/02\/img_650173b5e9772.png\",\"contentUrl\":\"https:\/\/guides.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/02\/img_650173b5e9772.png\",\"width\":716,\"height\":748},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/guides.visual-paradigm.com\/vn\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"UML\",\"item\":\"https:\/\/guides.visual-paradigm.com\/vn\/category\/uml\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/#website\",\"url\":\"https:\/\/guides.visual-paradigm.com\/vn\/\",\"name\":\"Visual Paradigm Guides Vietnamese\",\"description\":\"Smart guides for an AI-driven world\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/guides.visual-paradigm.com\/vn\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"vi\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML - Visual Paradigm Guides Vietnamese","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:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/","og_locale":"vi_VN","og_type":"article","og_title":"S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML - Visual Paradigm Guides Vietnamese","og_description":"Gi\u1edbi thi\u1ec7u Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML) cung c\u1ea5p m\u1ed9t khung m\u1ea1nh m\u1ebd \u0111\u1ec3 tr\u1ef1c quan h\u00f3a v\u00e0 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. Trong c\u00e1c lo\u1ea1i s\u01a1 \u0111\u1ed3 UML kh\u00e1c nhau, s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a c\u00e1c kh\u00eda c\u1ea1nh kh\u00e1c nhau c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa hai lo\u1ea1i s\u01a1 \u0111\u1ed3 n\u00e0y, khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng t\u1eebng lo\u1ea1i, v\u00e0 ch\u00fang \u0111\u00f3ng g\u00f3p nh\u01b0 th\u1ebf n\u00e0o v\u00e0o vi\u1ec7c hi\u1ec3u to\u00e0n di\u1ec7n v\u1ec1 c\u1ea5u tr\u00fac v\u00e0 h\u00e0nh vi c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. D\u00f9 b\u1ea1n l\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, ki\u1ebfn tr\u00fac s\u01b0 hay \u0111\u01a1n gi\u1ea3n ch\u1ec9 quan t\u00e2m \u0111\u1ebfn thi\u1ebft k\u1ebf ph\u1ea7n m\u1ec1m, h\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd gi\u00fap b\u1ea1n n\u1eafm b\u1eaft nh\u1eefng tinh t\u1ebf c\u1ee7a s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML. S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng S\u01a1 \u0111\u1ed3 l\u1edbp: M\u1ee5c \u0111\u00edch:S\u01a1 \u0111\u1ed3 l\u1edbp ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a c\u1ea5u tr\u00fac t\u0129nh c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. Ch\u00fang th\u1ec3 hi\u1ec7n c\u00e1c l\u1edbp, thu\u1ed9c t\u00ednh, ph\u01b0\u01a1ng th\u1ee9c v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c l\u1edbp. C\u00e1c th\u00e0nh ph\u1ea7n: S\u01a1 \u0111\u1ed3 l\u1edbp th\u01b0\u1eddng bao g\u1ed3m c\u00e1c l\u1edbp, giao di\u1ec7n, l\u1edbp tr\u1eebu t\u01b0\u1ee3ng, c\u00e1c m\u1ed1i quan h\u1ec7, kh\u00e1i qu\u00e1t h\u00f3a (k\u1ebf th\u1eeba), c\u00e1c ph\u1ee5 thu\u1ed9c v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t b\u1ed9i s\u1ed1. C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: S\u01a1 \u0111\u1ed3 l\u1edbp h\u1eefu \u00edch trong vi\u1ec7c thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng, x\u00e1c \u0111\u1ecbnh c\u00e1c l\u1edbp v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang, \u0111\u1ed3ng th\u1eddi minh h\u1ecda c\u00e1ch c\u00e1c l\u1edbp kh\u00e1c nhau ph\u1ed1i h\u1ee3p \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. V\u00ed d\u1ee5:Trong m\u1ed9t s\u01a1 \u0111\u1ed3 l\u1edbp, b\u1ea1n c\u00f3 th\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c l\u1edbp nh\u01b0 \u201cXe h\u01a1i\u201d, \u201c\u0110\u1ed9ng c\u01a1\u201d v\u00e0 \u201cB\u00e1nh xe\u201d, hi\u1ec3n th\u1ecb c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 ph\u01b0\u01a1ng th\u1ee9c c\u1ee7a ch\u00fang, c\u0169ng nh\u01b0 c\u00e1c m\u1ed1i quan h\u1ec7 nh\u01b0 \u201cXe h\u01a1i c\u00f3 m\u1ed9t \u0111\u1ed9ng c\u01a1\u201d v\u00e0 \u201cXe h\u01a1i c\u00f3 c\u00e1c b\u00e1nh xe.\u201d S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng: M\u1ee5c \u0111\u00edch:Ng\u01b0\u1ee3c l\u1ea1i, s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng t\u1eadp trung v\u00e0o vi\u1ec7c ghi l\u1ea1i m\u1ed9t b\u1ee9c \u1ea3nh t\u0129nh v\u1ec1 c\u00e1c th\u1ec3 hi\u1ec7n t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y c\u1ee7a c\u00e1c l\u1edbp v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3. Ch\u00fang th\u1ec3 hi\u1ec7n m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang. C\u00e1c th\u00e0nh ph\u1ea7n: S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng bao g\u1ed3m c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng (th\u1ec3 hi\u1ec7n c\u1ee7a c\u00e1c l\u1edbp), c\u00e1c li\u00ean k\u1ebft (m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng) v\u00e0 c\u00e1c k\u00fd hi\u1ec7u b\u1ed9i s\u1ed1 \u0111\u1ec3 ch\u1ec9 ra s\u1ed1 l\u01b0\u1ee3ng th\u1ec3 hi\u1ec7n tham gia. C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng:S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong ki\u1ec3m th\u1eed, g\u1ee1 l\u1ed7i v\u00e0 t\u00e0i li\u1ec7u h\u00f3a c\u00e1c t\u00ecnh hu\u1ed1ng ho\u1eb7c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3 c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng. Ch\u00fang cho th\u1ea5y c\u00e1ch c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh. V\u00ed d\u1ee5:Trong m\u1ed9t s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng, b\u1ea1n c\u00f3 th\u1ec3 minh h\u1ecda c\u00e1c th\u1ec3 hi\u1ec7n nh\u01b0 \u201cmyCar\u201d (th\u1ec3 hi\u1ec7n c\u1ee7a l\u1edbp \u201cXe h\u01a1i\u201d) c\u00f9ng v\u1edbi c\u00e1c th\u1ec3 hi\u1ec7n li\u00ean quan \u0111\u1ebfn \u201c\u0110\u1ed9ng c\u01a1\u201d v\u00e0 \u201cB\u00e1nh xe\u201d t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh th\u1ef1c thi h\u1ec7 th\u1ed1ng. S\u01a1 \u0111\u1ed3 l\u1edbp cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ea5p cao v\u1ec1 c\u1ea5u tr\u00fac c\u1ee7a h\u1ec7 th\u1ed1ng, t\u1eadp trung v\u00e0o m\u1ed1i quan h\u1ec7 v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a c\u00e1c l\u1edbp, trong khi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ee5 th\u1ec3 v\u00e0 th\u1ef1c t\u1ebf h\u01a1n b\u1eb1ng c\u00e1ch minh h\u1ecda c\u00e1c th\u1ec3 hi\u1ec7n v\u00e0 m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y. C\u1ea3 hai s\u01a1 \u0111\u1ed3 \u0111\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 hi\u1ec3u v\u00e0 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m, m\u1ed7i lo\u1ea1i \u0111\u00f3ng m\u1ed9t vai tr\u00f2 ri\u00eang bi\u1ec7t trong qu\u00e1 tr\u00ecnh m\u00f4 h\u00ecnh h\u00f3a UML. Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng lo\u1ea1i n\u00e0o? Vi\u1ec7c bi\u1ebft khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML ph\u1ee5 thu\u1ed9c v\u00e0o nhu c\u1ea7u m\u00f4 h\u00ecnh h\u00f3a c\u1ee5 th\u1ec3 v\u00e0 giai \u0111o\u1ea1n trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c h\u01b0\u1edbng d\u1eabn v\u1ec1 vi\u1ec7c khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng t\u1eebng lo\u1ea1i s\u01a1 \u0111\u1ed3: S\u01a1 \u0111\u1ed3 l\u1edbp: Thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng: S\u01a1 \u0111\u1ed3 l\u1edbp th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u1ea5u tr\u00fac c\u1ea5p cao c\u1ee7a h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n. S\u1eed d\u1ee5ng ch\u00fang khi b\u1ea1n mu\u1ed1n minh h\u1ecda c\u00e1c l\u1edbp, thu\u1ed9c t\u00ednh, ph\u01b0\u01a1ng th\u1ee9c v\u00e0 m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang. L\u00ean k\u1ebf ho\u1ea1ch ki\u1ebfn tr\u00fac: S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u1ec3 l\u00ean k\u1ebf ho\u1ea1ch ki\u1ebfn tr\u00fac t\u1ed5ng th\u1ec3 c\u1ee7a ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n, bao g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh v\u00e0 s\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa ch\u00fang. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 gi\u00fap thi\u1ebft k\u1ebf m\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng v\u00e0 d\u1ec5 b\u1ea3o tr\u00ec. T\u00e0i li\u1ec7u ph\u1ea7n m\u1ec1m: S\u01a1 \u0111\u1ed3 l\u1edbp r\u1ea5t h\u1eefu \u00edch \u0111\u1ec3 t\u00e0i li\u1ec7u h\u00f3a c\u1ea5u tr\u00fac t\u0129nh c\u1ee7a ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n. Ch\u00fang ph\u1ee5c v\u1ee5 nh\u01b0 m\u1ed9t t\u00e0i li\u1ec7u tham kh\u1ea3o cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, gi\u00fap l\u00e0m r\u00f5 c\u00e1ch c\u00e1c l\u1edbp kh\u00e1c nhau li\u00ean k\u1ebft v\u1edbi nhau v\u00e0 c\u00e1c thu\u1ed9c t\u00ednh c\u0169ng nh\u01b0 ph\u01b0\u01a1ng th\u1ee9c m\u00e0 ch\u00fang s\u1edf h\u1eefu. Ph\u00e2n t\u00edch h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng: Trong ph\u00e2n t\u00edch h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng, s\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c kh\u00e1i ni\u1ec7m v\u00e0 th\u1ef1c th\u1ec3 trong mi\u1ec1n v\u1ea5n \u0111\u1ec1, gi\u00fap chuy\u1ec3n \u0111\u1ed5i t\u1eeb y\u00eau c\u1ea7u sang thi\u1ebft k\u1ebf. T\u1ea1o m\u00e3: S\u01a1 \u0111\u1ed3 l\u1edbp c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 \u0111\u1ea7u v\u00e0o cho c\u00e1c c\u00f4ng c\u1ee5 t\u1ea1o m\u00e3, trong \u0111\u00f3 m\u00e3 \u0111\u01b0\u1ee3c sinh ra d\u1ef1a tr\u00ean \u0111\u1ecbnh ngh\u0129a l\u1edbp v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong s\u01a1 \u0111\u1ed3. S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng: Ki\u1ec3m th\u1eed v\u00e0 g\u1ee1 l\u1ed7i: S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong c\u00e1c giai \u0111o\u1ea1n ki\u1ec3m th\u1eed v\u00e0 g\u1ee1 l\u1ed7i. Ch\u00fang cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ee5 th\u1ec3 v\u1ec1 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c c\u1ee7a ch\u00fang t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3, gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 c\u00e1chS\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML","og_url":"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/","og_site_name":"Visual Paradigm Guides Vietnamese","article_published_time":"2026-02-05T03:15:14+00:00","og_image":[{"width":716,"height":748,"url":"https:\/\/guides.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/02\/img_650173b5e9772.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":"6 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#article","isPartOf":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/"},"headline":"S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML","datePublished":"2026-02-05T03:15:14+00:00","mainEntityOfPage":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/"},"wordCount":3015,"commentCount":0,"image":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#primaryimage"},"thumbnailUrl":"https:\/\/guides.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/02\/img_650173b5e9772.png","articleSection":["UML","Visual Modeling"],"inLanguage":"vi","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/","url":"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/","name":"S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML - Visual Paradigm Guides Vietnamese","isPartOf":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/#website"},"primaryImageOfPage":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#primaryimage"},"image":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#primaryimage"},"thumbnailUrl":"https:\/\/guides.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/02\/img_650173b5e9772.png","datePublished":"2026-02-05T03:15:14+00:00","author":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/#\/schema\/person\/292e97a06c90d6d605ddfd451bfdfe6f"},"breadcrumb":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#breadcrumb"},"inLanguage":"vi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/"]}]},{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#primaryimage","url":"https:\/\/guides.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/02\/img_650173b5e9772.png","contentUrl":"https:\/\/guides.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/02\/img_650173b5e9772.png","width":716,"height":748},{"@type":"BreadcrumbList","@id":"https:\/\/guides.visual-paradigm.com\/vn\/class-diagrams-vs-object-diagrams-in-uml\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/guides.visual-paradigm.com\/vn\/"},{"@type":"ListItem","position":2,"name":"UML","item":"https:\/\/guides.visual-paradigm.com\/vn\/category\/uml\/"},{"@type":"ListItem","position":3,"name":"S\u01a1 \u0111\u1ed3 l\u1edbp so v\u1edbi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng trong UML"}]},{"@type":"WebSite","@id":"https:\/\/guides.visual-paradigm.com\/vn\/#website","url":"https:\/\/guides.visual-paradigm.com\/vn\/","name":"Visual Paradigm Guides Vietnamese","description":"Smart guides for an AI-driven world","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/guides.visual-paradigm.com\/vn\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"vi"}]}},"_links":{"self":[{"href":"https:\/\/guides.visual-paradigm.com\/vn\/wp-json\/wp\/v2\/posts\/6590","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/guides.visual-paradigm.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/guides.visual-paradigm.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/guides.visual-paradigm.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/guides.visual-paradigm.com\/vn\/wp-json\/wp\/v2\/comments?post=6590"}],"version-history":[{"count":0,"href":"https:\/\/guides.visual-paradigm.com\/vn\/wp-json\/wp\/v2\/posts\/6590\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/guides.visual-paradigm.com\/vn\/wp-json\/wp\/v2\/media\/6591"}],"wp:attachment":[{"href":"https:\/\/guides.visual-paradigm.com\/vn\/wp-json\/wp\/v2\/media?parent=6590"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/guides.visual-paradigm.com\/vn\/wp-json\/wp\/v2\/categories?post=6590"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/guides.visual-paradigm.com\/vn\/wp-json\/wp\/v2\/tags?post=6590"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}