{"id":1503,"date":"2026-01-29T16:26:09","date_gmt":"2026-01-29T16:26:09","guid":{"rendered":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/"},"modified":"2026-01-29T16:26:09","modified_gmt":"2026-01-29T16:26:09","slug":"understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2","status":"publish","type":"post","link":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/","title":{"rendered":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng UML so v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp: M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1edbi c\u00e1c v\u00ed d\u1ee5"},"content":{"rendered":"<p dir=\"auto\">H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p m\u1ed9t so s\u00e1nh chi ti\u1ebft v\u1ec1 UML<a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-object-diagram\/\"><strong>S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng<\/strong><\/a> v\u00e0 <a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-class-diagram\/\"><strong>S\u01a1 \u0111\u1ed3 l\u1edbp<\/strong><\/a>, t\u1eadp trung v\u00e0o c\u00e1ch s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng ghi l\u1ea1i tr\u1ea1ng th\u00e1i h\u1ec7 th\u1ed1ng t\u1ea1i th\u1eddi \u0111i\u1ec3m th\u1ef1c thi so v\u1edbi c\u1ea5u tr\u00fac t\u0129nh \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi s\u01a1 \u0111\u1ed3 l\u1edbp. N\u00f3 bao g\u1ed3m c\u00e1c gi\u1ea3i th\u00edch chi ti\u1ebft, nhi\u1ec1u v\u00ed d\u1ee5 \u0111\u1ec3 gi\u00fap ng\u01b0\u1eddi \u0111\u1ecdc hi\u1ec3u r\u00f5 c\u1ea3 hai lo\u1ea1i s\u01a1 \u0111\u1ed3 v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a ch\u00fang.<\/p>\n<h2 dir=\"auto\">1. Gi\u1edbi thi\u1ec7u v\u1ec1 s\u01a1 \u0111\u1ed3 UML<\/h2>\n<p dir=\"auto\"><a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-uml\/\">Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML)<\/a> l\u00e0 m\u1ed9t c\u00e1ch chu\u1ea9n h\u00f3a \u0111\u1ec3 tr\u1ef1c quan h\u00f3a thi\u1ebft k\u1ebf v\u00e0 h\u00e0nh vi c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng. Trong c\u00e1c lo\u1ea1i s\u01a1 \u0111\u1ed3 c\u1ee7a n\u00f3,<strong>S\u01a1 \u0111\u1ed3 l\u1edbp<\/strong> v\u00e0 <strong>S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng<\/strong>l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 then ch\u1ed1t trong vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng, nh\u01b0ng ch\u00fang ph\u1ee5c v\u1ee5 c\u00e1c m\u1ee5c \u0111\u00edch kh\u00e1c nhau:<\/p>\n<ul dir=\"auto\">\n<li><strong>S\u01a1 \u0111\u1ed3 l\u1edbp<\/strong> m\u00f4 t\u1ea3 <strong>c\u1ea5u tr\u00fac t\u0129nh<\/strong>c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng, x\u00e1c \u0111\u1ecbnh 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>S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng<\/strong> ghi l\u1ea1i <strong>tr\u1ea1ng th\u00e1i \u0111\u1ed9ng<\/strong>c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh th\u1ef1c thi, hi\u1ec3n th\u1ecb c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c kh\u1edfi t\u1ea1o v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang.<\/li>\n<\/ul>\n<p dir=\"auto\">H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u00e1ch s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ea3n \u00e1nh tr\u1ea1ng th\u00e1i th\u1ef1c thi so v\u1edbi quan \u0111i\u1ec3m c\u1ea5u tr\u00fac v\u0129nh vi\u1ec5n c\u1ee7a s\u01a1 \u0111\u1ed3 l\u1edbp, v\u1edbi c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf.<\/p>\n<h2 dir=\"auto\">2. S\u01a1 \u0111\u1ed3 l\u1edbp: B\u1ea3n v\u1ebd c\u1ea5u tr\u00fac t\u0129nh<\/h2>\n<h3 dir=\"auto\">M\u1ee5c \u0111\u00edch v\u00e0 c\u1ea5u tr\u00fac<\/h3>\n<p dir=\"auto\">S\u01a1 \u0111\u1ed3 l\u1edbp l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a thi\u1ebft k\u1ebf h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng, cung c\u1ea5p m\u1ed9t <strong>g\u00f3c nh\u00ecn t\u0129nh<\/strong>v\u1ec1 ki\u1ebfn tr\u00fac c\u1ee7a h\u1ec7 th\u1ed1ng. Ch\u00fang x\u00e1c \u0111\u1ecbnh:<\/p>\n<ul dir=\"auto\">\n<li><strong>C\u00e1c l\u1edbp<\/strong>: C\u00e1c m\u1eabu cho \u0111\u1ed1i t\u01b0\u1ee3ng, x\u00e1c \u0111\u1ecbnh thu\u1ed9c t\u00ednh (d\u1eef li\u1ec7u) v\u00e0 ph\u01b0\u01a1ng th\u1ee9c (h\u00e0nh vi).<\/li>\n<li><strong>C\u00e1c m\u1ed1i quan h\u1ec7<\/strong>: C\u00e1c m\u1ed1i quan h\u1ec7, s\u1ef1 t\u1eadp h\u1ee3p, s\u1ef1 k\u1ebft h\u1ee3p, s\u1ef1 kh\u00e1i qu\u00e1t h\u00f3a v\u00e0 s\u1ef1 ph\u1ee5 thu\u1ed9c gi\u1eefa c\u00e1c l\u1edbp.<\/li>\n<li><strong>R\u00e0ng bu\u1ed9c<\/strong>: C\u00e1c quy t\u1eafc ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n \u0111i\u1ec1u ch\u1ec9nh c\u1ea5u tr\u00fac c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<p dir=\"auto\">S\u01a1 \u0111\u1ed3 l\u1edbp l\u00e0 <strong>v\u0129nh vi\u1ec5n<\/strong>, c\u00f3 ngh\u0129a l\u00e0 ch\u00fang bi\u1ec3u di\u1ec5n thi\u1ebft k\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng tham chi\u1ebfu \u0111\u1ebfn m\u1ed9t \u0111i\u1ec3m c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh th\u1ef1c thi. Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, l\u1eadp k\u1ebf ho\u1ea1ch tri\u1ec3n khai v\u00e0 sinh m\u00e3.<\/p>\n<h3 dir=\"auto\">C\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh<\/h3>\n<ul dir=\"auto\">\n<li><strong>L\u1edbp<\/strong>: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n d\u01b0\u1edbi d\u1ea1ng h\u00ecnh ch\u1eef nh\u1eadt v\u1edbi ba ng\u0103n (t\u00ean, thu\u1ed9c t\u00ednh, ph\u01b0\u01a1ng th\u1ee9c).<\/li>\n<li><strong>Thu\u1ed9c t\u00ednh<\/strong>: C\u00e1c thu\u1ed9c t\u00ednh ho\u1eb7c tr\u01b0\u1eddng d\u1eef li\u1ec7u c\u1ee7a m\u1ed9t l\u1edbp (v\u00ed d\u1ee5: name: String).<\/li>\n<li><strong>Ph\u01b0\u01a1ng th\u1ee9c<\/strong>: C\u00e1c thao t\u00e1c ho\u1eb7c h\u00e0nh vi m\u00e0 m\u1ed9t l\u1edbp c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n (v\u00ed d\u1ee5: calculateTotal(): double).<\/li>\n<li><strong>C\u00e1c m\u1ed1i quan h\u1ec7<\/strong>:\n<ul dir=\"auto\">\n<li><strong>M\u1ed1i quan h\u1ec7<\/strong>: M\u1ed9t k\u1ebft n\u1ed1i chung gi\u1eefa c\u00e1c l\u1edbp (\u0111\u01b0\u1eddng th\u1eb3ng li\u1ec1n).<\/li>\n<li><strong>S\u1ef1 t\u1eadp h\u1ee3p<\/strong>: M\u1ed9t m\u1ed1i quan h\u1ec7 \u201cc\u00f3-m\u1ed9t\u201d (h\u00ecnh kim c\u01b0\u01a1ng tr\u1ed1ng).<\/li>\n<li><strong>S\u1ef1 k\u1ebft h\u1ee3p<\/strong>: M\u1ed9t m\u1ed1i quan h\u1ec7 \u201cs\u1edf h\u1eefu-m\u1ed9t\u201d m\u1ea1nh h\u01a1n (h\u00ecnh kim c\u01b0\u01a1ng \u0111\u1ea7y).<\/li>\n<li><strong>Kh\u00e1i qu\u00e1t h\u00f3a<\/strong>: K\u1ebf th\u1eeba ho\u1eb7c m\u1ed1i quan h\u1ec7 \u201cl\u00e0-m\u1ed9t\u201d (m\u0169i t\u00ean v\u1edbi tam gi\u00e1c r\u1ed7ng).<\/li>\n<li><strong>S\u1ef1 ph\u1ee5 thu\u1ed9c<\/strong>: M\u1ed9t m\u1ed1i quan h\u1ec7 y\u1ebfu h\u01a1n n\u01a1i m\u1ed9t l\u1edbp ph\u1ee5 thu\u1ed9c v\u00e0o l\u1edbp kh\u00e1c (\u0111\u01b0\u1eddng n\u00e9t \u0111\u1ee9t).<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3 dir=\"auto\">C\u00e1c t\u00ecnh hu\u1ed1ng v\u00ed d\u1ee5<\/h3>\n<p dir=\"auto\">S\u01a1 \u0111\u1ed3 l\u1edbp l\u00e0 l\u00fd t\u01b0\u1edfng cho:<\/p>\n<ul dir=\"auto\">\n<li>Thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m.<\/li>\n<li>Truy\u1ec1n \u0111\u1ea1t c\u1ea5u tr\u00fac \u0111\u1ebfn c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n ho\u1eb7c c\u00e1c b\u00ean li\u00ean quan.<\/li>\n<li>T\u1ea1o c\u00e1c b\u1ea3n nh\u00e1p m\u00e3 trong l\u1eadp tr\u00ecnh h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng.<\/li>\n<\/ul>\n<h2 dir=\"auto\">3. S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng: C\u00e1c b\u1ee9c \u1ea3nh th\u1eddi \u0111i\u1ec3m ch\u1ea1y<\/h2>\n<h3 dir=\"auto\">M\u1ee5c \u0111\u00edch v\u00e0 c\u1ea5u tr\u00fac<\/h3>\n<p dir=\"auto\">S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng cung c\u1ea5p m\u1ed9t <strong>b\u1ee9c \u1ea3nh c\u1ee7a h\u1ec7 th\u1ed1ng t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh ch\u1ea1y<\/strong>, hi\u1ec3n th\u1ecb c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c kh\u1edfi t\u1ea1o, c\u00e1c gi\u00e1 tr\u1ecb thu\u1ed9c t\u00ednh c\u1ee7a ch\u00fang v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 (li\u00ean k\u1ebft). Ch\u00fang l\u00e0 <strong>\u0111\u1ed9ng<\/strong>, ghi l\u1ea1i tr\u1ea1ng th\u00e1i c\u1ee7a h\u1ec7 th\u1ed1ng trong m\u1ed9t t\u00ecnh hu\u1ed1ng ho\u1eb7c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3.<\/p>\n<p dir=\"auto\">S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c suy ra t\u1eeb s\u01a1 \u0111\u1ed3 l\u1edbp, v\u00ec c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng l\u00e0 th\u1ec3 hi\u1ec7n c\u1ee7a c\u00e1c l\u1edbp, v\u00e0 c\u00e1c li\u00ean k\u1ebft l\u00e0 th\u1ec3 hi\u1ec7n c\u1ee7a c\u00e1c m\u1ed1i quan h\u1ec7 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong s\u01a1 \u0111\u1ed3 l\u1edbp.<\/p>\n<h3 dir=\"auto\">C\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh<\/h3>\n<ul dir=\"auto\">\n<li><strong>\u0110\u1ed1i t\u01b0\u1ee3ng<\/strong>: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n d\u01b0\u1edbi d\u1ea1ng h\u00ecnh ch\u1eef nh\u1eadt v\u1edbi \u0111\u1ecbnh d\u1ea1ng objectName: ClassName, hi\u1ec3n th\u1ecb c\u00e1c gi\u00e1 tr\u1ecb thu\u1ed9c t\u00ednh c\u1ee5 th\u1ec3.<\/li>\n<li><strong>Li\u00ean k\u1ebft<\/strong>: C\u00e1c k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng, bi\u1ec3u di\u1ec5n c\u00e1c th\u1ec3 hi\u1ec7n c\u1ee7a c\u00e1c m\u1ed1i quan h\u1ec7 t\u1eeb s\u01a1 \u0111\u1ed3 l\u1edbp.<\/li>\n<li><strong>Gi\u00e1 tr\u1ecb thu\u1ed9c t\u00ednh<\/strong>: C\u00e1c gi\u00e1 tr\u1ecb c\u1ee5 th\u1ec3 cho c\u00e1c thu\u1ed9c t\u00ednh c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh (v\u00ed d\u1ee5: price = 99,99).<\/li>\n<li><strong>S\u1ed1 l\u01b0\u1ee3ng<\/strong>: Ch\u1ec9 ra c\u00f3 bao nhi\u00eau \u0111\u1ed1i t\u01b0\u1ee3ng tham gia v\u00e0o m\u1ed9t m\u1ed1i quan h\u1ec7 (v\u00ed d\u1ee5: m\u1ed9t-\u0111a).<\/li>\n<\/ul>\n<h3 dir=\"auto\">C\u00e1c t\u00ecnh hu\u1ed1ng v\u00ed d\u1ee5<\/h3>\n<p dir=\"auto\">S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng h\u1eefu \u00edch trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p:<\/p>\n<ul dir=\"auto\">\n<li>Tr\u1ef1c quan h\u00f3a tr\u1ea1ng th\u00e1i c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ho\u1eb7c t\u00ecnh hu\u1ed1ng ki\u1ec3m th\u1eed c\u1ee5 th\u1ec3.<\/li>\n<li>G\u1ee1 l\u1ed7i \u0111\u1ec3 hi\u1ec3u c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong qu\u00e1 tr\u00ecnh ch\u1ea1y.<\/li>\n<li>X\u00e1c minh h\u00e0nh vi h\u1ec7 th\u1ed1ng so v\u1edbi c\u00e1c y\u00eau c\u1ea7u.<\/li>\n<\/ul>\n<h2 dir=\"auto\">4. Nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 s\u01a1 \u0111\u1ed3 l\u1edbp<button aria-label=\"Copy\" data-state=\"closed\" type=\"button\"><\/button><\/h2>\n<div dir=\"auto\">\n<table dir=\"auto\">\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>X\u00e1c \u0111\u1ecbnh c\u1ea5u tr\u00fac t\u0129nh v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c l\u1edbp.<\/td>\n<td>Hi\u1ec3n th\u1ecb m\u1ed9t b\u1ee9c \u1ea3nh v\u1ec1 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang trong qu\u00e1 tr\u00ecnh ch\u1ea1y.<\/td>\n<\/tr>\n<tr>\n<td><strong>Tr\u1ecdng t\u00e2m<\/strong><\/td>\n<td>C\u00e1c l\u1edbp tr\u1eebu t\u01b0\u1ee3ng v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 ti\u1ec1m n\u0103ng c\u1ee7a ch\u00fang.<\/td>\n<td>C\u00e1c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3 (\u0111\u1ed1i t\u01b0\u1ee3ng) v\u00e0 tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i c\u1ee7a ch\u00fang.<\/td>\n<\/tr>\n<tr>\n<td><strong>G\u00f3c nh\u00ecn theo th\u1eddi gian<\/strong><\/td>\n<td>V\u0129nh vi\u1ec5n, \u0111\u1ea1i di\u1ec7n cho thi\u1ebft k\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng.<\/td>\n<td>Theo th\u1eddi gian, ghi l\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh th\u1ef1c thi.<\/td>\n<\/tr>\n<tr>\n<td><strong>N\u1ed9i dung<\/strong><\/td>\n<td>Thu\u1ed9c t\u00ednh, ph\u01b0\u01a1ng th\u1ee9c v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 (li\u00ean k\u1ebft, kh\u00e1i qu\u00e1t h\u00f3a).<\/td>\n<td>C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u1edbi c\u00e1c gi\u00e1 tr\u1ecb thu\u1ed9c t\u00ednh c\u1ee5 th\u1ec3 v\u00e0 c\u00e1c li\u00ean k\u1ebft.<\/td>\n<\/tr>\n<tr>\n<td><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/strong><\/td>\n<td>Thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, ki\u1ebfn tr\u00fac, sinh m\u00e3.<\/td>\n<td>G\u1ee1 l\u1ed7i, x\u00e1c minh k\u1ecbch b\u1ea3n, ph\u00e2n t\u00edch tr\u1ea1ng th\u00e1i th\u1eddi gian ch\u1ea1y.<\/td>\n<\/tr>\n<tr>\n<td><strong>V\u00ed d\u1ee5<\/strong><\/td>\n<td>L\u1edbp Car v\u1edbi c\u00e1c thu\u1ed9c t\u00ednh nh\u01b0 model v\u00e0 c\u00e1c ph\u01b0\u01a1ng th\u1ee9c nh\u01b0 drive().<\/td>\n<td>M\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng myCar: Car v\u1edbi model = \u201cToyota\u201d v\u00e0 li\u00ean k\u1ebft v\u1edbi m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng myEngine: Engine.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 dir=\"auto\">5. C\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf<\/h2>\n<p dir=\"auto\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 ba v\u00ed d\u1ee5 chi ti\u1ebft so s\u00e1nh s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng cho c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c nhau.<\/p>\n<h3 dir=\"auto\">V\u00ed d\u1ee5 1: H\u1ec7 th\u1ed1ng mua s\u1eafm tr\u1ef1c tuy\u1ebfn<\/h3>\n<h4 dir=\"auto\">T\u00ecnh hu\u1ed1ng<\/h4>\n<p dir=\"auto\">M\u1ed9t h\u1ec7 th\u1ed1ng mua s\u1eafm tr\u1ef1c tuy\u1ebfn c\u00f3 kh\u00e1ch h\u00e0ng, \u0111\u01a1n h\u00e0ng v\u00e0 s\u1ea3n ph\u1ea9m. S\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u1ecbnh ngh\u0129a c\u1ea5u tr\u00fac, trong khi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng hi\u1ec3n th\u1ecb \u0111\u01a1n h\u00e0ng c\u1ee7a m\u1ed9t kh\u00e1ch h\u00e0ng t\u1ea1i th\u1eddi \u0111i\u1ec3m thanh to\u00e1n.<\/p>\n<h4 dir=\"auto\">S\u01a1 \u0111\u1ed3 l\u1edbp<\/h4>\n<div dir=\"auto\"><img decoding=\"async\" src=\"https:\/\/uml.planttext.com\/plantuml\/png\/XP2z2eCm58LtmNUuEBKLfQuEHMYNJXNQ5xXDWWWnaUHcAdttnXYbTkaISiuzVFUdiOI6t23JX4cq5ixEaXw4WLUQ01GioYkluKwcLrsm5GvYOuW1U_djvAD49cw62xFRfybxuGSdmlNq_o5p94---3T8qeIUoxLxok3a32LpqjSVKsd3RetcZb6aZxFwD_beUYOs7Jf1xMH6zdgHhCgWA4wG7SloaCLDQWYBsZIPzHggGcWPgGQc5M6lVB0HYlkBVm00\"\/><\/div>\n<p dir=\"auto\"><strong>Gi\u1ea3i th\u00edch<\/strong>: S\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u1ecbnh ngh\u0129a:<\/p>\n<ul dir=\"auto\">\n<li>Kh\u00e1ch h\u00e0ng v\u1edbi c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ec3 \u0111\u1eb7t h\u00e0ng.<\/li>\n<li>\u0110\u01a1n h\u00e0ng v\u1edbi c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ec3 t\u00ednh t\u1ed5ng ti\u1ec1n.<\/li>\n<li>S\u1ea3n ph\u1ea9m v\u1edbi c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ec3 l\u1ea5y gi\u00e1.<\/li>\n<li>M\u1ed1i quan h\u1ec7: M\u1ed9t kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 \u0111\u1eb7t nhi\u1ec1u \u0111\u01a1n h\u00e0ng (1-\u0111a), v\u00e0 m\u1ed9t \u0111\u01a1n h\u00e0ng ch\u1ee9a nhi\u1ec1u s\u1ea3n ph\u1ea9m (1-\u0111a).<\/li>\n<\/ul>\n<h4 dir=\"auto\">S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng<\/h4>\n<div dir=\"auto\"><img decoding=\"async\" src=\"https:\/\/uml.planttext.com\/plantuml\/png\/XP5DQiCm48NtWTnXyDv1LXEe3Is6TDFIqbn1bGRY86c4B4EXzExLZzEYRBhJlAVvdcOqpa7ui1YztT371MM0va9dEy1ncGCPz0ryRJS0SYsV5Jn0SsIiQv9iXS4alCGUU2BC8XenwQGcqeYVmZYDEqackjz_EUGL-exV3V2UJcjGLajAz39FYP13EEE7bXrQph8SA8WKq-txNNzVeRLmWTm09qzgaM55kr8L-EbsXDVSqvIBaqnQ7y5z1JQqpFWVbrVSjzHIOVU_sBGWQDj7kEu21d1QI9nZv5LAVXaekf9i49EzzVExAdj4g-At_W00\"\/><\/div>\n<p dir=\"auto\"><strong>Gi\u1ea3i th\u00edch<\/strong>: S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng hi\u1ec3n th\u1ecb:<\/p>\n<ul dir=\"auto\">\n<li>M\u1ed9t kh\u00e1ch h\u00e0ng c\u1ee5 th\u1ec3 (john: Customer) v\u1edbi c\u00e1c gi\u00e1 tr\u1ecb thu\u1ed9c t\u00ednh c\u1ee5 th\u1ec3.<\/li>\n<li>M\u1ed9t \u0111\u01a1n h\u00e0ng c\u1ee5 th\u1ec3 (order123: Order) \u0111\u01b0\u1ee3c \u0111\u1eb7t b\u1edfi John, v\u1edbi t\u1ed5ng c\u1ed9ng 149,98 \u0111\u00f4 la.<\/li>\n<li>Hai s\u1ea3n ph\u1ea9m (laptop v\u00e0 chu\u1ed9t) trong \u0111\u01a1n h\u00e0ng, v\u1edbi gi\u00e1 c\u1ee5 th\u1ec3 c\u1ee7a ch\u00fang.<\/li>\n<li>C\u00e1c li\u00ean k\u1ebft th\u1ec3 hi\u1ec7n c\u00e1c m\u1ed1i quan h\u1ec7 t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y (v\u00ed d\u1ee5: john \u0111\u1eb7t order123, ch\u1ee9a laptop v\u00e0 chu\u1ed9t).<\/li>\n<\/ul>\n<h3 dir=\"auto\">V\u00ed d\u1ee5 2: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd th\u01b0 vi\u1ec7n<\/h3>\n<h4 dir=\"auto\">T\u00ecnh hu\u1ed1ng<\/h4>\n<p dir=\"auto\">M\u1ed9t h\u1ec7 th\u1ed1ng th\u01b0 vi\u1ec7n qu\u1ea3n l\u00fd s\u00e1ch, th\u00e0nh vi\u00ean v\u00e0 c\u00e1c kho\u1ea3n m\u01b0\u1ee3n. S\u01a1 \u0111\u1ed3 l\u1edbp m\u00f4 t\u1ea3 c\u1ea5u tr\u00fac, trong khi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng th\u1ec3 hi\u1ec7n m\u1ed9t th\u00e0nh vi\u00ean \u0111ang m\u01b0\u1ee3n s\u00e1ch.<\/p>\n<h4 dir=\"auto\">S\u01a1 \u0111\u1ed3 l\u1edbp<\/h4>\n<div dir=\"auto\"><img decoding=\"async\" src=\"https:\/\/uml.planttext.com\/plantuml\/png\/RP312i8m38RlXRv3sMbpREXr1vdYHT2JJv2veCMkXJPJGNntswt29bvA-X6-Fqdj22prdUBihC0vSSIkGIjUd0bHTCDdtrRYH5Rgom0rT3W5UMEiDO-jCRSqu-pzDGKGFOqlVomaISqq1VHqDNPcbcvp1wcWKPXcbV0QXQ0d6GS3EcOeN_vaZ8FjW7nGU0TeaNghvp379w5kWosk4C-Gh19H56kHBCjoaOnnOOxWTPmDA_xlaIwsOSjPxUN-nXy0\"\/><\/div>\n<p dir=\"auto\"><strong>Gi\u1ea3i th\u00edch<\/strong>: S\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u1ecbnh ngh\u0129a:<\/p>\n<ul dir=\"auto\">\n<li>Th\u00e0nh vi\u00ean v\u1edbi c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ec3 m\u01b0\u1ee3n s\u00e1ch.<\/li>\n<li>S\u00e1ch v\u1edbi c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ec3 ki\u1ec3m tra t\u00ecnh tr\u1ea1ng s\u1eb5n c\u00f3.<\/li>\n<li>Giao d\u1ecbch m\u01b0\u1ee3n v\u1edbi c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ec3 gia h\u1ea1n m\u01b0\u1ee3n.<\/li>\n<li>M\u1ed1i quan h\u1ec7: M\u1ed9t th\u00e0nh vi\u00ean c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u giao d\u1ecbch m\u01b0\u1ee3n, v\u00e0 m\u1ed9t cu\u1ed1n s\u00e1ch c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u01b0\u1ee3n trong nhi\u1ec1u giao d\u1ecbch.<\/li>\n<\/ul>\n<h4 dir=\"auto\">S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng<\/h4>\n<div dir=\"auto\"><img decoding=\"async\" src=\"https:\/\/uml.planttext.com\/plantuml\/png\/NP1F2y8W68VlWts7bzq7DgZ3eAZHfTXEqGTmsmkpfeA-eqFqtLFdwCz9VNxw_DIz9MveacEQwFQ67K76Hz5X2GtA5aq6ppG1a65nwc4BMSFOAlDGSOaU7Fm1k4X1W-ElZsdKNBdD9THk4asUpPvwyRJQ6FquSWgsWXNhdAtp5GkXGPgC-WqtS_ZLr6fzTpsL6sAF9tDFjVIGe35OhaqD5RUYiu7pYGPjV73c2k6eSPQ7Zu0ytq5y29JnhZPDGkDVA6pCiK-JFQhU_UiR\"\/><\/div>\n<p dir=\"auto\"><strong>Gi\u1ea3i th\u00edch<\/strong>: S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng th\u1ec3 hi\u1ec7n:<\/p>\n<ul dir=\"auto\">\n<li>M\u1ed9t th\u00e0nh vi\u00ean c\u1ee5 th\u1ec3 (alice: Th\u00e0nh vi\u00ean) v\u1edbi c\u00e1c gi\u00e1 tr\u1ecb thu\u1ed9c t\u00ednh c\u1ee5 th\u1ec3.<\/li>\n<li>M\u1ed9t giao d\u1ecbch c\u1ee5 th\u1ec3 (loan001: Giao d\u1ecbch) v\u1edbi ng\u00e0y m\u01b0\u1ee3n v\u00e0 ng\u00e0y tr\u1ea3.<\/li>\n<li>M\u1ed9t cu\u1ed1n s\u00e1ch c\u1ee5 th\u1ec3 (book1: S\u00e1ch) m\u00e0 Alice \u0111\u00e3 m\u01b0\u1ee3n.<\/li>\n<li>C\u00e1c li\u00ean k\u1ebft th\u1ec3 hi\u1ec7n tr\u1ea1ng th\u00e1i t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y (v\u00ed d\u1ee5: alice m\u01b0\u1ee3n book1 th\u00f4ng qua loan001).<\/li>\n<\/ul>\n<h3 dir=\"auto\">V\u00ed d\u1ee5 3: H\u1ec7 th\u1ed1ng \u0111\u1ea1i l\u00fd \u00f4 t\u00f4<\/h3>\n<h4 dir=\"auto\">T\u00ecnh hu\u1ed1ng<\/h4>\n<p dir=\"auto\">M\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u1ea1i l\u00fd \u00f4 t\u00f4 qu\u1ea3n l\u00fd \u00f4 t\u00f4, \u0111\u1ed9ng c\u01a1 v\u00e0 b\u00e1nh xe. S\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u1ecbnh ngh\u0129a c\u1ea5u tr\u00fac, trong khi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng th\u1ec3 hi\u1ec7n c\u1ea5u h\u00ecnh c\u1ee5 th\u1ec3 c\u1ee7a m\u1ed9t chi\u1ebfc xe.<\/p>\n<h4 dir=\"auto\">S\u01a1 \u0111\u1ed3 l\u1edbp<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/uml.planttext.com\/plantuml\/png\/NP0n2y9038Ntmls7S9DQEWXEDqX179mTd8ysrC0rbRk8LF6_QyzJssulZ-JBIyeWrikrTIghd0q1TjR3GsK0HTlLw0mSnHCtqUdHUWF4CbHvdDnpGuoBfSgUNyB7IX2CnQ6USAI_uDZ8gM6IAULqHdG9SXlqZ17eZlyilXFx0mmdwBM6LL5ieqY935GTYoKEyvwDJll6BILo_NxC2m00\"\/><\/p>\n<p dir=\"auto\"><strong>Gi\u1ea3i th\u00edch<\/strong>: S\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u1ecbnh ngh\u0129a:<\/p>\n<ul dir=\"auto\">\n<li>Xe v\u1edbi c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ec3 kh\u1edfi \u0111\u1ed9ng \u0111\u1ed9ng c\u01a1.<\/li>\n<li>\u0110\u1ed9ng c\u01a1 v\u1edbi c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ec3 kh\u1edfi \u0111\u1ed9ng.<\/li>\n<li>B\u00e1nh xe v\u1edbi c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ec3 quay.<\/li>\n<li>M\u1ed1i quan h\u1ec7: M\u1ed9t chi\u1ebfc xe ch\u1ee9a m\u1ed9t \u0111\u1ed9ng c\u01a1 (t\u1ed5 h\u1ee3p) v\u00e0 b\u1ed1n b\u00e1nh xe (t\u1ed5 h\u1ee3p).<\/li>\n<\/ul>\n<h4 dir=\"auto\">S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng<\/h4>\n<div dir=\"auto\"><img decoding=\"async\" src=\"https:\/\/uml.planttext.com\/plantuml\/png\/XP912u8m583lWl_XiRkWKmg4GWWFtIFFInzbw1QwY1NzzxPfb1JpiettyNs7nx9UiavUsyRtnE6CfGJIgWthKj07WOVl0RIYmWPMG7P22SaqQJj53578EWreI6FVUtuIo8yrnoY5t3x6pZ3TLYQLXs5a4r9Tq0ps2p99t4w8ZIuKvXu3TZRunTllwxlne-MlJLqsdRDZbntFsOdBJlxOTkiG1EjnJH6aK0ekMStxRphinGMf2yOkc4nWXhpI7-C5\"\/><\/div>\n<p dir=\"auto\"><strong>Gi\u1ea3i th\u00edch<\/strong>: S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng hi\u1ec3n th\u1ecb:<\/p>\n<ul dir=\"auto\">\n<li>M\u1ed9t chi\u1ebfc xe c\u1ee5 th\u1ec3 (myCar: Car) v\u1edbi m\u1eabu \u201cToyota Camry\u201d v\u00e0 n\u0103m 2023.<\/li>\n<li>M\u1ed9t \u0111\u1ed9ng c\u01a1 c\u1ee5 th\u1ec3 (engine1: Engine) lo\u1ea1i V6.<\/li>\n<li>B\u1ed1n b\u00e1nh xe c\u1ee5 th\u1ec3 (wheel1 \u0111\u1ebfn wheel4) c\u00f3 k\u00edch th\u01b0\u1edbc 17.<\/li>\n<li>C\u00e1c li\u00ean k\u1ebft th\u1ec3 hi\u1ec7n c\u1ea5u th\u00e0nh t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y (v\u00ed d\u1ee5: myCar ch\u1ee9a engine1 v\u00e0 b\u1ed1n b\u00e1nh xe).<\/li>\n<\/ul>\n<h2 dir=\"auto\">6. Khi n\u00e0o s\u1eed d\u1ee5ng t\u1eebng s\u01a1 \u0111\u1ed3<\/h2>\n<h3 dir=\"auto\">S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp khi:<\/h3>\n<ul dir=\"auto\">\n<li>Thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac ho\u1eb7c c\u1ea5u tr\u00fac c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<li>Truy\u1ec1n \u0111\u1ea1t b\u1ea3n v\u1ebd t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n ho\u1eb7c b\u00ean li\u00ean quan.<\/li>\n<li>T\u1ea1o c\u00e1c b\u1ea3n nh\u00e1p m\u00e3 ngu\u1ed3n ho\u1eb7c s\u01a1 \u0111\u1ed3 c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/li>\n<li>X\u00e1c \u0111\u1ecbnh c\u00e1c m\u1eabu t\u00e1i s\u1eed d\u1ee5ng cho \u0111\u1ed1i t\u01b0\u1ee3ng.<\/li>\n<\/ul>\n<h3 dir=\"auto\">S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng khi:<\/h3>\n<ul dir=\"auto\">\n<li>G\u1ee1 l\u1ed7i \u0111\u1ec3 hi\u1ec3u tr\u1ea1ng th\u00e1i v\u00e0 t\u01b0\u01a1ng t\u00e1c c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y.<\/li>\n<li>X\u00e1c minh c\u00e1c t\u00ecnh hu\u1ed1ng ho\u1eb7c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3 (v\u00ed d\u1ee5: ki\u1ec3m th\u1eed quy tr\u00ecnh thanh to\u00e1n).<\/li>\n<li>Minh h\u1ecda c\u00e1ch c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ed1i h\u1ee3p trong m\u1ed9t t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3.<\/li>\n<li>Gi\u1ea3ng d\u1ea1y ho\u1eb7c gi\u1ea3i th\u00edch h\u00e0nh vi t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y cho c\u00e1c b\u00ean li\u00ean quan kh\u00f4ng chuy\u00ean.<\/li>\n<\/ul>\n<h2 dir=\"auto\">7. T\u00f3m t\u1eaft<\/h2>\n<ul dir=\"auto\">\n<li><strong>S\u01a1 \u0111\u1ed3 l\u1edbp<\/strong> cung c\u1ea5p m\u1ed9t <strong>g\u00f3c nh\u00ecn t\u0129nh, tr\u1eebu t\u01b0\u1ee3ng<\/strong>c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng, \u0111\u1ecbnh ngh\u0129a 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 r\u1ea5t quan tr\u1ecdng cho thi\u1ebft k\u1ebf v\u00e0 l\u1eadp k\u1ebf ho\u1ea1ch h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng<\/strong> ghi l\u1ea1i m\u1ed9t <strong>b\u1ee9c \u1ea3nh \u0111\u1ed9ng, c\u1ee5 th\u1ec3<\/strong>c\u1ee7a h\u1ec7 th\u1ed1ng t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y, hi\u1ec3n th\u1ecb c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ee5 th\u1ec3, gi\u00e1 tr\u1ecb thu\u1ed9c t\u00ednh v\u00e0 c\u00e1c li\u00ean k\u1ebft. Ch\u00fang r\u1ea5t l\u00fd t\u01b0\u1edfng \u0111\u1ec3 g\u1ee1 l\u1ed7i v\u00e0 x\u00e1c minh t\u00ecnh hu\u1ed1ng.<\/li>\n<li>C\u00f9ng nhau, c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y b\u1ed5 sung cho nhau: s\u01a1 \u0111\u1ed3 l\u1edbp t\u1ea1o n\u1ec1n t\u1ea3ng, trong khi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng th\u1ec3 hi\u1ec7n c\u00e1ch n\u1ec1n t\u1ea3ng \u0111\u00f3 ho\u1ea1t \u0111\u1ed9ng trong th\u1ef1c t\u1ebf.<\/li>\n<\/ul>\n<p dir=\"auto\">B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c v\u00ed d\u1ee5 nh\u01b0 h\u1ec7 th\u1ed1ng mua s\u1eafm tr\u1ef1c tuy\u1ebfn, h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd th\u01b0 vi\u1ec7n v\u00e0 h\u1ec7 th\u1ed1ng \u0111\u1ea1i l\u00fd \u00f4 t\u00f4, b\u00e0i h\u01b0\u1edbng d\u1eabn n\u00e0y minh h\u1ecda c\u00e1ch m\u00f4 h\u00ecnh h\u00f3a c\u1ea3 c\u1ea5u tr\u00fac v\u00e0 tr\u1ea1ng th\u00e1i t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y c\u1ee7a h\u1ec7 th\u1ed1ng b\u1eb1ng UML.<\/p>\n<h2 dir=\"auto\">8. T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<ul dir=\"auto\">\n<li>H\u01b0\u1edbng d\u1eabn Visual Paradigm: <a href=\"https:\/\/guides.visual-paradigm.com\/class-diagrams-vs-object-diagrams-in-uml\/\" rel=\"noopener noreferrer\" target=\"_blank\">S\u01a1 \u0111\u1ed3 L\u1edbp so v\u1edbi S\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng<\/a> v\u00e0 <a href=\"https:\/\/guides.visual-paradigm.com\/unveiling-uml-navigating-the-differences-between-object-diagrams-and-class-diagrams\/\" rel=\"noopener noreferrer\" target=\"_blank\">\u0110i\u1ec1u h\u01b0\u1edbng c\u00e1c kh\u00e1c bi\u1ec7t UML<\/a><\/li>\n<li>CIO Wiki: <a href=\"https:\/\/cio-wiki.org\/wiki\/Object_Diagram\" rel=\"noopener noreferrer\" target=\"_blank\">S\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng<\/a><\/li>\n<li>GitMind: <a href=\"https:\/\/gitmind.com\/uml-object-diagram.html\" rel=\"noopener noreferrer\" target=\"_blank\">S\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng UML<\/a><\/li>\n<li>SlideShare: <a href=\"https:\/\/www.slideshare.net\/slideshow\/class-and-objectdiagram\/25473182\" rel=\"noopener noreferrer\" target=\"_blank\">S\u01a1 \u0111\u1ed3 L\u1edbp v\u00e0 S\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng<\/a><\/li>\n<li>Gleek: <a href=\"https:\/\/www.gleek.io\/blog\/uml-diagram-types\" rel=\"noopener noreferrer\" target=\"_blank\">C\u00e1c lo\u1ea1i s\u01a1 \u0111\u1ed3 UML<\/a><\/li>\n<\/ul>\n<p dir=\"auto\">H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p m\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n \u0111\u1ec3 hi\u1ec3u v\u00e0 \u00e1p d\u1ee5ng c\u00e1c s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng. B\u1eb1ng c\u00e1ch th\u00e0nh th\u1ea1o c\u1ea3 hai lo\u1ea1i s\u01a1 \u0111\u1ed3 n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 thi\u1ebft k\u1ebf, ph\u00e2n t\u00edch v\u00e0 g\u1ee1 l\u1ed7i hi\u1ec7u qu\u1ea3 c\u00e1c h\u1ec7 th\u1ed1ng h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p m\u1ed9t so s\u00e1nh chi ti\u1ebft v\u1ec1 UMLS\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 S\u01a1 \u0111\u1ed3 l\u1edbp, t\u1eadp trung v\u00e0o c\u00e1ch s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng ghi l\u1ea1i tr\u1ea1ng&hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[60,58],"tags":[],"class_list":["post-1503","post","type-post","status-publish","format-standard","hentry","category-unified-modeling-language","category-visual-paradigm"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng UML so v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp: M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1edbi c\u00e1c v\u00ed d\u1ee5 - Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/\" \/>\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 \u0111\u1ed1i t\u01b0\u1ee3ng UML so v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp: M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1edbi c\u00e1c v\u00ed d\u1ee5 - Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation\" \/>\n<meta property=\"og:description\" content=\"H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p m\u1ed9t so s\u00e1nh chi ti\u1ebft v\u1ec1 UMLS\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 S\u01a1 \u0111\u1ed3 l\u1edbp, t\u1eadp trung v\u00e0o c\u00e1ch s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng ghi l\u1ea1i tr\u1ea1ng&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-29T16:26:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/uml.planttext.com\/plantuml\/png\/XP2z2eCm58LtmNUuEBKLfQuEHMYNJXNQ5xXDWWWnaUHcAdttnXYbTkaISiuzVFUdiOI6t23JX4cq5ixEaXw4WLUQ01GioYkluKwcLrsm5GvYOuW1U_djvAD49cw62xFRfybxuGSdmlNq_o5p94---3T8qeIUoxLxok3a32LpqjSVKsd3RetcZb6aZxFwD_beUYOs7Jf1xMH6zdgHhCgWA4wG7SloaCLDQWYBsZIPzHggGcWPgGQc5M6lVB0HYlkBVm00\" \/>\n<meta name=\"author\" content=\"curtis\" \/>\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=\"curtis\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/\"},\"author\":{\"name\":\"curtis\",\"@id\":\"https:\/\/www.tech-posts.com\/vi\/#\/schema\/person\/d3c1ccce5d39d39d44bdb24b3bb4ceb1\"},\"headline\":\"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng UML so v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp: M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1edbi c\u00e1c v\u00ed d\u1ee5\",\"datePublished\":\"2026-01-29T16:26:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/\"},\"wordCount\":3232,\"publisher\":{\"@id\":\"https:\/\/www.tech-posts.com\/vi\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/uml.planttext.com\/plantuml\/png\/XP2z2eCm58LtmNUuEBKLfQuEHMYNJXNQ5xXDWWWnaUHcAdttnXYbTkaISiuzVFUdiOI6t23JX4cq5ixEaXw4WLUQ01GioYkluKwcLrsm5GvYOuW1U_djvAD49cw62xFRfybxuGSdmlNq_o5p94---3T8qeIUoxLxok3a32LpqjSVKsd3RetcZb6aZxFwD_beUYOs7Jf1xMH6zdgHhCgWA4wG7SloaCLDQWYBsZIPzHggGcWPgGQc5M6lVB0HYlkBVm00\",\"articleSection\":[\"Unified Modeling Language\",\"Visual Paradigm\"],\"inLanguage\":\"vi\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/\",\"url\":\"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/\",\"name\":\"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng UML so v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp: M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1edbi c\u00e1c v\u00ed d\u1ee5 - Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation\",\"isPartOf\":{\"@id\":\"https:\/\/www.tech-posts.com\/vi\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/uml.planttext.com\/plantuml\/png\/XP2z2eCm58LtmNUuEBKLfQuEHMYNJXNQ5xXDWWWnaUHcAdttnXYbTkaISiuzVFUdiOI6t23JX4cq5ixEaXw4WLUQ01GioYkluKwcLrsm5GvYOuW1U_djvAD49cw62xFRfybxuGSdmlNq_o5p94---3T8qeIUoxLxok3a32LpqjSVKsd3RetcZb6aZxFwD_beUYOs7Jf1xMH6zdgHhCgWA4wG7SloaCLDQWYBsZIPzHggGcWPgGQc5M6lVB0HYlkBVm00\",\"datePublished\":\"2026-01-29T16:26:09+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/#breadcrumb\"},\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/#primaryimage\",\"url\":\"https:\/\/uml.planttext.com\/plantuml\/png\/XP2z2eCm58LtmNUuEBKLfQuEHMYNJXNQ5xXDWWWnaUHcAdttnXYbTkaISiuzVFUdiOI6t23JX4cq5ixEaXw4WLUQ01GioYkluKwcLrsm5GvYOuW1U_djvAD49cw62xFRfybxuGSdmlNq_o5p94---3T8qeIUoxLxok3a32LpqjSVKsd3RetcZb6aZxFwD_beUYOs7Jf1xMH6zdgHhCgWA4wG7SloaCLDQWYBsZIPzHggGcWPgGQc5M6lVB0HYlkBVm00\",\"contentUrl\":\"https:\/\/uml.planttext.com\/plantuml\/png\/XP2z2eCm58LtmNUuEBKLfQuEHMYNJXNQ5xXDWWWnaUHcAdttnXYbTkaISiuzVFUdiOI6t23JX4cq5ixEaXw4WLUQ01GioYkluKwcLrsm5GvYOuW1U_djvAD49cw62xFRfybxuGSdmlNq_o5p94---3T8qeIUoxLxok3a32LpqjSVKsd3RetcZb6aZxFwD_beUYOs7Jf1xMH6zdgHhCgWA4wG7SloaCLDQWYBsZIPzHggGcWPgGQc5M6lVB0HYlkBVm00\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.tech-posts.com\/vi\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng UML so v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp: M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1edbi c\u00e1c v\u00ed d\u1ee5\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.tech-posts.com\/vi\/#website\",\"url\":\"https:\/\/www.tech-posts.com\/vi\/\",\"name\":\"Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/www.tech-posts.com\/vi\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.tech-posts.com\/vi\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"vi\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.tech-posts.com\/vi\/#organization\",\"name\":\"Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation\",\"url\":\"https:\/\/www.tech-posts.com\/vi\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/www.tech-posts.com\/vi\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.tech-posts.com\/vi\/wp-content\/uploads\/sites\/10\/2025\/03\/cropped-tech-posts-logo-1.png\",\"contentUrl\":\"https:\/\/www.tech-posts.com\/vi\/wp-content\/uploads\/sites\/10\/2025\/03\/cropped-tech-posts-logo-1.png\",\"width\":512,\"height\":512,\"caption\":\"Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation\"},\"image\":{\"@id\":\"https:\/\/www.tech-posts.com\/vi\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.tech-posts.com\/vi\/#\/schema\/person\/d3c1ccce5d39d39d44bdb24b3bb4ceb1\",\"name\":\"curtis\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/www.tech-posts.com\/vi\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/6910084565fcc601ec03c6693bb8ea480c1e52ccaa0efb299eb038bb6a1edc87?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/6910084565fcc601ec03c6693bb8ea480c1e52ccaa0efb299eb038bb6a1edc87?s=96&d=mm&r=g\",\"caption\":\"curtis\"},\"url\":\"https:\/\/www.tech-posts.com\/vi\/author\/curtis\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng UML so v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp: M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1edbi c\u00e1c v\u00ed d\u1ee5 - Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/","og_locale":"vi_VN","og_type":"article","og_title":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng UML so v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp: M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1edbi c\u00e1c v\u00ed d\u1ee5 - Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation","og_description":"H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p m\u1ed9t so s\u00e1nh chi ti\u1ebft v\u1ec1 UMLS\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 S\u01a1 \u0111\u1ed3 l\u1edbp, t\u1eadp trung v\u00e0o c\u00e1ch s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng ghi l\u1ea1i tr\u1ea1ng&hellip;","og_url":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/","og_site_name":"Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation","article_published_time":"2026-01-29T16:26:09+00:00","og_image":[{"url":"https:\/\/uml.planttext.com\/plantuml\/png\/XP2z2eCm58LtmNUuEBKLfQuEHMYNJXNQ5xXDWWWnaUHcAdttnXYbTkaISiuzVFUdiOI6t23JX4cq5ixEaXw4WLUQ01GioYkluKwcLrsm5GvYOuW1U_djvAD49cw62xFRfybxuGSdmlNq_o5p94---3T8qeIUoxLxok3a32LpqjSVKsd3RetcZb6aZxFwD_beUYOs7Jf1xMH6zdgHhCgWA4wG7SloaCLDQWYBsZIPzHggGcWPgGQc5M6lVB0HYlkBVm00","type":"","width":"","height":""}],"author":"curtis","twitter_card":"summary_large_image","twitter_misc":{"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi":"curtis","\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"7 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/#article","isPartOf":{"@id":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/"},"author":{"name":"curtis","@id":"https:\/\/www.tech-posts.com\/vi\/#\/schema\/person\/d3c1ccce5d39d39d44bdb24b3bb4ceb1"},"headline":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng UML so v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp: M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1edbi c\u00e1c v\u00ed d\u1ee5","datePublished":"2026-01-29T16:26:09+00:00","mainEntityOfPage":{"@id":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/"},"wordCount":3232,"publisher":{"@id":"https:\/\/www.tech-posts.com\/vi\/#organization"},"image":{"@id":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/#primaryimage"},"thumbnailUrl":"https:\/\/uml.planttext.com\/plantuml\/png\/XP2z2eCm58LtmNUuEBKLfQuEHMYNJXNQ5xXDWWWnaUHcAdttnXYbTkaISiuzVFUdiOI6t23JX4cq5ixEaXw4WLUQ01GioYkluKwcLrsm5GvYOuW1U_djvAD49cw62xFRfybxuGSdmlNq_o5p94---3T8qeIUoxLxok3a32LpqjSVKsd3RetcZb6aZxFwD_beUYOs7Jf1xMH6zdgHhCgWA4wG7SloaCLDQWYBsZIPzHggGcWPgGQc5M6lVB0HYlkBVm00","articleSection":["Unified Modeling Language","Visual Paradigm"],"inLanguage":"vi"},{"@type":"WebPage","@id":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/","url":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/","name":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng UML so v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp: M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1edbi c\u00e1c v\u00ed d\u1ee5 - Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation","isPartOf":{"@id":"https:\/\/www.tech-posts.com\/vi\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/#primaryimage"},"image":{"@id":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/#primaryimage"},"thumbnailUrl":"https:\/\/uml.planttext.com\/plantuml\/png\/XP2z2eCm58LtmNUuEBKLfQuEHMYNJXNQ5xXDWWWnaUHcAdttnXYbTkaISiuzVFUdiOI6t23JX4cq5ixEaXw4WLUQ01GioYkluKwcLrsm5GvYOuW1U_djvAD49cw62xFRfybxuGSdmlNq_o5p94---3T8qeIUoxLxok3a32LpqjSVKsd3RetcZb6aZxFwD_beUYOs7Jf1xMH6zdgHhCgWA4wG7SloaCLDQWYBsZIPzHggGcWPgGQc5M6lVB0HYlkBVm00","datePublished":"2026-01-29T16:26:09+00:00","breadcrumb":{"@id":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/#breadcrumb"},"inLanguage":"vi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/"]}]},{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/#primaryimage","url":"https:\/\/uml.planttext.com\/plantuml\/png\/XP2z2eCm58LtmNUuEBKLfQuEHMYNJXNQ5xXDWWWnaUHcAdttnXYbTkaISiuzVFUdiOI6t23JX4cq5ixEaXw4WLUQ01GioYkluKwcLrsm5GvYOuW1U_djvAD49cw62xFRfybxuGSdmlNq_o5p94---3T8qeIUoxLxok3a32LpqjSVKsd3RetcZb6aZxFwD_beUYOs7Jf1xMH6zdgHhCgWA4wG7SloaCLDQWYBsZIPzHggGcWPgGQc5M6lVB0HYlkBVm00","contentUrl":"https:\/\/uml.planttext.com\/plantuml\/png\/XP2z2eCm58LtmNUuEBKLfQuEHMYNJXNQ5xXDWWWnaUHcAdttnXYbTkaISiuzVFUdiOI6t23JX4cq5ixEaXw4WLUQ01GioYkluKwcLrsm5GvYOuW1U_djvAD49cw62xFRfybxuGSdmlNq_o5p94---3T8qeIUoxLxok3a32LpqjSVKsd3RetcZb6aZxFwD_beUYOs7Jf1xMH6zdgHhCgWA4wG7SloaCLDQWYBsZIPzHggGcWPgGQc5M6lVB0HYlkBVm00"},{"@type":"BreadcrumbList","@id":"https:\/\/www.tech-posts.com\/vi\/understanding-uml-object-diagrams-vs-class-diagrams-a-comprehensive-tutorial-with-examples-2\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.tech-posts.com\/vi\/"},{"@type":"ListItem","position":2,"name":"Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng UML so v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp: M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1edbi c\u00e1c v\u00ed d\u1ee5"}]},{"@type":"WebSite","@id":"https:\/\/www.tech-posts.com\/vi\/#website","url":"https:\/\/www.tech-posts.com\/vi\/","name":"Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation","description":"","publisher":{"@id":"https:\/\/www.tech-posts.com\/vi\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.tech-posts.com\/vi\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"vi"},{"@type":"Organization","@id":"https:\/\/www.tech-posts.com\/vi\/#organization","name":"Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation","url":"https:\/\/www.tech-posts.com\/vi\/","logo":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/www.tech-posts.com\/vi\/#\/schema\/logo\/image\/","url":"https:\/\/www.tech-posts.com\/vi\/wp-content\/uploads\/sites\/10\/2025\/03\/cropped-tech-posts-logo-1.png","contentUrl":"https:\/\/www.tech-posts.com\/vi\/wp-content\/uploads\/sites\/10\/2025\/03\/cropped-tech-posts-logo-1.png","width":512,"height":512,"caption":"Tech Posts Vietnamese - Latest Trends in AI, Software, and Digital Innovation"},"image":{"@id":"https:\/\/www.tech-posts.com\/vi\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.tech-posts.com\/vi\/#\/schema\/person\/d3c1ccce5d39d39d44bdb24b3bb4ceb1","name":"curtis","image":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/www.tech-posts.com\/vi\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/6910084565fcc601ec03c6693bb8ea480c1e52ccaa0efb299eb038bb6a1edc87?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/6910084565fcc601ec03c6693bb8ea480c1e52ccaa0efb299eb038bb6a1edc87?s=96&d=mm&r=g","caption":"curtis"},"url":"https:\/\/www.tech-posts.com\/vi\/author\/curtis\/"}]}},"_links":{"self":[{"href":"https:\/\/www.tech-posts.com\/vi\/wp-json\/wp\/v2\/posts\/1503","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tech-posts.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tech-posts.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tech-posts.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tech-posts.com\/vi\/wp-json\/wp\/v2\/comments?post=1503"}],"version-history":[{"count":0,"href":"https:\/\/www.tech-posts.com\/vi\/wp-json\/wp\/v2\/posts\/1503\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.tech-posts.com\/vi\/wp-json\/wp\/v2\/media?parent=1503"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tech-posts.com\/vi\/wp-json\/wp\/v2\/categories?post=1503"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tech-posts.com\/vi\/wp-json\/wp\/v2\/tags?post=1503"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}