{"id":11135,"date":"2026-03-18T10:23:38","date_gmt":"2026-03-18T02:23:38","guid":{"rendered":"https:\/\/www.cybermedian.com\/vn\/%f0%9f%8e%93-uml-class-diagram-tutorial-for-beginners\/"},"modified":"2026-03-18T10:23:38","modified_gmt":"2026-03-18T02:23:38","slug":"%f0%9f%8e%93-uml-class-diagram-tutorial-for-beginners","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/vn\/%f0%9f%8e%93-uml-class-diagram-tutorial-for-beginners\/","title":{"rendered":"\ud83c\udf93 H\u01b0\u1edbng d\u1eabn s\u01a1 \u0111\u1ed3 l\u1edbp UML cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u"},"content":{"rendered":"<h3>H\u1ecdc Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t v\u1edbi Visual Paradigm<\/h3>\n<blockquote>\n<p><em>\u201cM\u1ed9t b\u1ee9c tranh \u0111\u00e1ng gi\u00e1 m\u1ed9t ngh\u00ecn d\u00f2ng m\u00e3\u201d<\/em>\u00a0\u2014 S\u01a1 \u0111\u1ed3 l\u1edbp UML gi\u00fap b\u1ea1n tr\u1ef1c quan h\u00f3a, thi\u1ebft k\u1ebf v\u00e0 giao ti\u1ebfp c\u00e1c h\u1ec7 th\u1ed1ng h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng tr\u01b0\u1edbc khi vi\u1ebft b\u1ea5t k\u1ef3 d\u00f2ng m\u00e3 n\u00e0o.<\/p>\n<\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/1773800545.pngkeyeyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJyZXNvdXJjZV91c2VyX2lkIjoiOGNlODI2N2YtYThmNS00NzA5LWEwZWYtYmVlZGQxN2ZiNzBmIiwicmVzb3VyY2VfaWQiOiIxNzczODAwNTQ1IiwicmVzb3VyY2VfY2hhdF9pZCI6ImY0NzE3Mjc5LTFiZjYtNDc5Ny05ZDI1LTNhOWI5ZWEwYmI5MSJ9.png\"\/><\/p>\n<h2>\ud83d\udd39 UML l\u00e0 g\u00ec?<\/h2>\n<p><strong>Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML)<\/strong>\u00a0l\u00e0 m\u1ed9t k\u00fd hi\u1ec7u \u0111\u1ed3 h\u1ecda chu\u1ea9n h\u00f3a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 tr\u1ef1c quan h\u00f3a, m\u00f4 t\u1ea3, x\u00e2y d\u1ef1ng v\u00e0 t\u00e0i li\u1ec7u h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng.<\/p>\n<p>M\u1ed9t\u00a0<strong>S\u01a1 \u0111\u1ed3 l\u1edbp<\/strong>\u00a0l\u00e0 m\u1ed9t lo\u1ea1i\u00a0<em>s\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac t\u0129nh<\/em>\u00a0m\u00f4 t\u1ea3 m\u1ed9t h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1ch hi\u1ec3n th\u1ecb:<\/p>\n<ul>\n<li>\n<p>\u2705\u00a0<strong>L\u1edbp<\/strong>\u00a0\u2013 b\u1ea3n v\u1ebd thi\u1ebft k\u1ebf c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng<\/p>\n<\/li>\n<li>\n<p>\u2705\u00a0<strong>Thu\u1ed9c t\u00ednh<\/strong>\u00a0\u2013 d\u1eef li\u1ec7u\/t\u00ednh ch\u1ea5t c\u1ee7a c\u00e1c l\u1edbp<\/p>\n<\/li>\n<li>\n<p>\u2705\u00a0<strong>Thao t\u00e1c (Ph\u01b0\u01a1ng th\u1ee9c)<\/strong>\u00a0\u2013 h\u00e0nh vi\/ch\u1ee9c n\u0103ng<\/p>\n<\/li>\n<li>\n<p>\u2705\u00a0<strong>M\u1ed1i quan h\u1ec7<\/strong>\u00a0\u2013 c\u00e1ch c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau<\/p>\n<\/li>\n<\/ul>\n<blockquote>\n<p>\ud83d\udca1\u00a0<strong>T\u1ea1i sao c\u1ea7n h\u1ecdc UML?<\/strong>\u00a0N\u00f3 gi\u00fap l\u1ea5p \u0111\u1ea7y kho\u1ea3ng c\u00e1ch gi\u1eefa y\u00eau c\u1ea7u v\u00e0 m\u00e3 ngu\u1ed3n, c\u1ea3i thi\u1ec7n giao ti\u1ebfp trong nh\u00f3m v\u00e0 gi\u00fap ph\u00e1t hi\u1ec7n l\u1ed7i thi\u1ebft k\u1ebf s\u1edbm.<\/p>\n<\/blockquote>\n<hr\/>\n<h2>\ud83d\udd39 Hi\u1ec3u v\u1ec1 L\u1edbp v\u00e0 \u0110\u1ed1i t\u01b0\u1ee3ng<\/h2>\n<h3>L\u1edbp l\u00e0 g\u00ec?<\/h3>\n<p>M\u1ed9t\u00a0<strong>L\u1edbp<\/strong>\u00a0l\u00e0 b\u1ea3n thi\u1ebft k\u1ebf \u0111\u1ec3 t\u1ea1o ra c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng. N\u00f3 \u0111\u1ecbnh ngh\u0129a:<\/p>\n<ul>\n<li>\n<p><strong>Tr\u1ea1ng th\u00e1i<\/strong>\u00a0(thu\u1ed9c t\u00ednh\/t\u00ednh ch\u1ea5t)<\/p>\n<\/li>\n<li>\n<p><strong>H\u00e0nh vi<\/strong>\u00a0(thao t\u00e1c\/ph\u01b0\u01a1ng th\u1ee9c)<\/p>\n<\/li>\n<\/ul>\n<h3>\u0110\u1ed1i t\u01b0\u1ee3ng l\u00e0 g\u00ec?<\/h3>\n<p>M\u1ed9t\u00a0<strong>\u0110\u1ed1i t\u01b0\u1ee3ng<\/strong>\u00a0l\u00e0 m\u1ed9t\u00a0<em>th\u1ec3 hi\u1ec7n<\/em>\u00a0c\u1ee7a m\u1ed9t l\u1edbp \u2014 m\u1ed9t th\u1ef1c th\u1ec3 c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1eeb b\u1ea3n thi\u1ebft k\u1ebf l\u1edbp.<\/p>\n<p><img alt=\"What is a class?\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/01-uml-base-class-and-object-explained.png\"\/><\/p>\n<h3>\ud83d\udc15 V\u00ed d\u1ee5 th\u1ef1c t\u1ebf: L\u1edbp Ch\u00f3<\/h3>\n<pre><code>L\u1edbp: Ch\u00f3\r\n\u251c\u2500 Thu\u1ed9c t\u00ednh: m\u00e0u s\u1eafc, t\u00ean, gi\u1ed1ng\r\n\u2514\u2500 H\u00e0nh vi: v\u1eaby \u0111u\u00f4i(), s\u1ee7a(), \u0103n()\r\n<\/code><\/pre>\n<p>M\u1ed7i\u00a0<code data-backticks=\"1\">Ch\u00f3<\/code>\u00a0\u0111\u1ed1i t\u01b0\u1ee3ng (v\u00ed d\u1ee5 nh\u01b0\u00a0<code data-backticks=\"1\">ch\u00f3 c\u01b0ng c\u1ee7a t\u00f4i<\/code>,\u00a0<code data-backticks=\"1\">ch\u00f3 h\u00e0ng x\u00f3m<\/code>) chia s\u1ebb c\u1ea5u tr\u00fac gi\u1ed1ng nhau nh\u01b0ng l\u01b0u tr\u1eef d\u1eef li\u1ec7u ri\u00eang bi\u1ec7t.<\/p>\n<hr\/>\n<h2>\ud83d\udd39 Gi\u1ea3i th\u00edch k\u00fd hi\u1ec7u l\u1edbp UML<\/h2>\n<p>M\u1ed9t l\u1edbp UML \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n d\u01b0\u1edbi d\u1ea1ng\u00a0<strong>h\u00ecnh ch\u1eef nh\u1eadt ba ng\u0103n<\/strong>:<\/p>\n<p><img alt=\"UML Class Notation\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/02-class-notation.png\"\/><\/p>\n<h3>1\ufe0f\u20e3 T\u00ean l\u1edbp (Ph\u1ea7n tr\u00ean)<\/h3>\n<ul>\n<li>\n<p><strong>B\u1eaft bu\u1ed9c<\/strong>\u00a0\u2013 y\u1ebfu t\u1ed1 duy nh\u1ea5t b\u1eaft bu\u1ed9c<\/p>\n<\/li>\n<li>\n<p>Vi\u1ebft b\u1eb1ng\u00a0<strong>v\u0103n b\u1ea3n th\u01b0\u1eddng<\/strong>, c\u0103n gi\u1eefa, in \u0111\u1eadm<\/p>\n<\/li>\n<li>\n<p>C\u00e1c l\u1edbp tr\u1eebu t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb trong\u00a0<em>in nghi\u00eang<\/em><\/p>\n<\/li>\n<\/ul>\n<h3>2\ufe0f\u20e3 Thu\u1ed9c t\u00ednh (Ph\u1ea7n gi\u1eefa)<\/h3>\n<ul>\n<li>\n<p>\u0110\u1ecbnh d\u1ea1ng:\u00a0<code data-backticks=\"1\">quy\u1ec1n truy c\u1eadp t\u00ean : ki\u1ec3u = gi\u00e1 tr\u1ecbM\u1eb7c\u0110\u1ecbnh<\/code><\/p>\n<\/li>\n<li>\n<p>T\u01b0\u01a1ng \u1ee9ng v\u1edbi\u00a0<strong>bi\u1ebfn th\u00e0nh vi\u00ean<\/strong>\u00a0trong m\u00e3 ngu\u1ed3n<\/p>\n<\/li>\n<li>\n<p>V\u00ed d\u1ee5:\u00a0<code data-backticks=\"1\">- tu\u1ed5i : Integer = 0<\/code><\/p>\n<\/li>\n<\/ul>\n<h3>3\ufe0f\u20e3 Thao t\u00e1c\/Ph\u01b0\u01a1ng th\u1ee9c (Ph\u1ea7n d\u01b0\u1edbi)<\/h3>\n<ul>\n<li>\n<p>\u0110\u1ecbnh d\u1ea1ng:\u00a0<code data-backticks=\"1\">quy\u1ec1n truy c\u1eadp t\u00eanPh\u01b0\u01a1ngTh\u1ee9c(thamS\u1ed1 : Ki\u1ec3u) : Ki\u1ec3uTr\u1ea3V\u1ec1<\/code><\/p>\n<\/li>\n<li>\n<p>T\u01b0\u01a1ng \u1ee9ng v\u1edbi\u00a0<strong>ph\u01b0\u01a1ng th\u1ee9c l\u1edbp<\/strong>\u00a0trong m\u00e3 ngu\u1ed3n<\/p>\n<\/li>\n<li>\n<p>V\u00ed d\u1ee5:\u00a0<code data-backticks=\"1\">+ t\u00ednhT\u1ed5ng() : Double<\/code><\/p>\n<\/li>\n<\/ul>\n<p><img alt=\"Class Operations\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/03-class-notation-with-examples.png\"\/><\/p>\n<hr\/>\n<h2>\ud83d\udd39 Quy\u1ec1n truy c\u1eadp v\u00e0 tham s\u1ed1 l\u1edbp<\/h2>\n<h3>\ud83d\udd10 C\u00e1c s\u1eeda \u0111\u1ed5i quy\u1ec1n truy c\u1eadp<\/h3>\n<p>C\u00e1c k\u00fd hi\u1ec7u ti\u1ec1n t\u1ed1 ch\u1ec9 m\u1ee9c \u0111\u1ed9 truy c\u1eadp:<\/p>\n<table>\n<thead>\n<tr>\n<th>K\u00fd hi\u1ec7u<\/th>\n<th>Quy\u1ec1n truy c\u1eadp<\/th>\n<th>C\u00f3 th\u1ec3 truy c\u1eadp t\u1eeb<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><code data-backticks=\"1\">+<\/code><\/td>\n<td>C\u00f4ng khai<\/td>\n<td>B\u1ea5t k\u1ef3 \u0111\u00e2u<\/td>\n<\/tr>\n<tr>\n<td><code data-backticks=\"1\">-<\/code><\/td>\n<td>Ri\u00eang t\u01b0<\/td>\n<td>Ch\u1ec9 trong l\u1edbp<\/td>\n<\/tr>\n<tr>\n<td><code data-backticks=\"1\">#<\/code><\/td>\n<td>B\u1ea3o v\u1ec7<\/td>\n<td>Trong l\u1edbp v\u00e0 c\u00e1c l\u1edbp con<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img alt=\"Class Visibility\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/04-class-attributes-with-different-visibility.png\"\/><\/p>\n<h3>\u27a1\ufe0f H\u01b0\u1edbng c\u1ee7a tham s\u1ed1<\/h3>\n<p>X\u00e1c \u0111\u1ecbnh c\u00e1ch d\u1eef li\u1ec7u ch\u1ea3y trong tham s\u1ed1 ph\u01b0\u01a1ng th\u1ee9c:<\/p>\n<table>\n<thead>\n<tr>\n<th>H\u01b0\u1edbng<\/th>\n<th>\u00dd ngh\u0129a<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><code data-backticks=\"1\">v\u00e0o<\/code><\/td>\n<td>Ch\u1ec9 \u0111\u1ea7u v\u00e0o (m\u1eb7c \u0111\u1ecbnh)<\/td>\n<\/tr>\n<tr>\n<td><code data-backticks=\"1\">ra<\/code><\/td>\n<td>Ch\u1ec9 \u0111\u1ea7u ra<\/td>\n<\/tr>\n<tr>\n<td><code data-backticks=\"1\">v\u00e0o v\u00e0 ra<\/code><\/td>\n<td>\u0110\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img alt=\"Parameter Directionality\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/05-parameter-directionality.png\"\/><\/p>\n<blockquote>\n<p>\ud83d\udca1 M\u1eb9o: H\u1ea7u h\u1ebft c\u00e1c ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh m\u1eb7c \u0111\u1ecbnh s\u1eed d\u1ee5ng\u00a0<code data-backticks=\"1\">v\u00e0o<\/code>\u00a0tham s\u1ed1. S\u1eed d\u1ee5ng h\u01b0\u1edbng khi m\u00f4 h\u00ecnh h\u00f3a API ho\u1eb7c lu\u1ed3ng d\u1eef li\u1ec7u ph\u1ee9c t\u1ea1p.<\/p>\n<\/blockquote>\n<hr\/>\n<h2>\ud83d\udd39 Ba g\u00f3c nh\u00ecn c\u1ee7a s\u01a1 \u0111\u1ed3 l\u1edbp<\/h2>\n<p>Ch\u1ecdn m\u1ee9c \u0111\u1ed9 chi ti\u1ebft c\u1ee7a s\u01a1 \u0111\u1ed3 d\u1ef1a tr\u00ean giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n c\u1ee7a b\u1ea1n:<\/p>\n<p><img alt=\"Perspectives of Class Diagram\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/06-perspective-of-class-diagram.png\"\/><\/p>\n<table>\n<thead>\n<tr>\n<th>G\u00f3c nh\u00ecn<\/th>\n<th>Khi n\u00e0o n\u00ean d\u00f9ng<\/th>\n<th>Tr\u1ecdng t\u00e2m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Kh\u00e1i ni\u1ec7m<\/strong><\/td>\n<td>Ph\u00e2n t\u00edch ban \u0111\u1ea7u, m\u00f4 h\u00ecnh h\u00f3a mi\u1ec1n<\/td>\n<td>C\u00e1c kh\u00e1i ni\u1ec7m kinh doanh, c\u00e1c th\u1ef1c th\u1ec3 th\u1ebf gi\u1edbi th\u1ef1c<\/td>\n<\/tr>\n<tr>\n<td><strong>Chu\u1ea9n h\u00f3a<\/strong><\/td>\n<td>Giai \u0111o\u1ea1n thi\u1ebft k\u1ebf, \u0111\u1ecbnh ngh\u0129a giao di\u1ec7n<\/td>\n<td>Ki\u1ec3u d\u1eef li\u1ec7u tr\u1eebu t\u01b0\u1ee3ng (ADTs), ch\u1eef k\u00fd ph\u01b0\u01a1ng th\u1ee9c<\/td>\n<\/tr>\n<tr>\n<td><strong>Tri\u1ec3n khai<\/strong><\/td>\n<td>Giai \u0111o\u1ea1n l\u1eadp tr\u00ecnh, thi\u1ebft k\u1ebf k\u1ef9 thu\u1eadt<\/td>\n<td>C\u00e1c l\u1edbp c\u1ee5 th\u1ec3, chi ti\u1ebft \u0111\u1eb7c th\u00f9 ng\u00f4n ng\u1eef<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<blockquote>\n<p>\ud83c\udfaf\u00a0<strong>Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t<\/strong>: B\u1eaft \u0111\u1ea7u t\u1eeb kh\u00e1i ni\u1ec7m \u2192 ph\u00e1t tri\u1ec3n d\u1ea7n \u0111\u1ebfn tri\u1ec3n khai. \u0110\u1eebng l\u00e0m qu\u00e1 t\u1ea3i s\u01a1 \u0111\u1ed3 ban \u0111\u1ea7u b\u1eb1ng c\u00e1c chi ti\u1ebft k\u1ef9 thu\u1eadt.<\/p>\n<\/blockquote>\n<hr\/>\n<h2>\ud83d\udd39 C\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c l\u1edbp<\/h2>\n<p>UML \u0111\u1ecbnh ngh\u0129a ch\u00ednh x\u00e1c c\u00e1ch c\u00e1c l\u1edbp t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau. N\u1eafm v\u1eefng 6 m\u1ed1i quan h\u1ec7 c\u1ed1t l\u00f5i n\u00e0y:<\/p>\n<p><img alt=\"Relationships between classes\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/07-relationships-between-classes.png\"\/><\/p>\n<h3>1\ufe0f\u20e3 K\u1ebf th\u1eeba (T\u1ed5ng qu\u00e1t h\u00f3a) \u2192 \u201cL\u00c0-M\u1ed8T\u201d<\/h3>\n<ul>\n<li>\n<p>Bi\u1ec3u di\u1ec5n s\u1ef1 chuy\u00ean bi\u1ec7t h\u00f3a:<code data-backticks=\"1\">L\u1edbp con<\/code>\u00a0<strong>l\u00e0 m\u1ed9t<\/strong>\u00a0<code data-backticks=\"1\">L\u1edbp cha<\/code><\/p>\n<\/li>\n<li>\n<p>K\u00fd hi\u1ec7u: \u0110\u01b0\u1eddng li\u1ec1n v\u1edbi<strong>\u0111\u1ea7u m\u0169i t\u00ean h\u00ecnh tam gi\u00e1c r\u1ed7ng<\/strong>h\u01b0\u1edbng v\u1ec1 cha<\/p>\n<\/li>\n<li>\n<p>C\u00e1c l\u1edbp tr\u1eebu t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb b\u1eb1ng<em>in nghi\u00eang<\/em><\/p>\n<\/li>\n<\/ul>\n<p><img alt=\"Inheritance (or Generalization)\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/08-inheritance-in-class-diagram.png\"\/><\/p>\n<h4>\ud83d\udcd0 V\u00ed d\u1ee5: C\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p H\u00ecnh d\u1ea1ng<\/h4>\n<p><img alt=\"Inheritance Example - Shapes\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/09-inheritance-hierarchy-example.png\"\/><\/p>\n<pre class=\"lang-java\"><code data-language=\"java\">\/\/ T\u01b0\u01a1ng \u0111\u01b0\u01a1ng m\u00e3 ngu\u1ed3n\r\nl\u1edbp tr\u1eebu t\u01b0\u1ee3ng H\u00ecnh { ... }\r\nl\u1edbp Circle k\u1ebf th\u1eeba H\u00ecnh { ... }\r\nl\u1edbp Rectangle k\u1ebf th\u1eeba H\u00ecnh { ... }\r\n<\/code><\/pre>\n<h3>2\ufe0f\u20e3 Li\u00ean k\u1ebft \u2192 \u201cS\u1eec D\u1ee4NG-M\u1ed8T\u201d (Li\u00ean k\u1ebft c\u1ea5u tr\u00fac)<\/h3>\n<ul>\n<li>\n<p>Bi\u1ec3u di\u1ec5n m\u1ed1i quan h\u1ec7 b\u1ec1n v\u1eefng gi\u1eefa c\u00e1c l\u1edbp ngang h\u00e0ng<\/p>\n<\/li>\n<li>\n<p>K\u00fd hi\u1ec7u:<strong>\u0110\u01b0\u1eddng li\u1ec1n<\/strong>gi\u1eefa c\u00e1c l\u1edbp<\/p>\n<\/li>\n<li>\n<p>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u00e1nh nh\u00e3n b\u1eb1ng c\u1ee5m \u0111\u1ed9ng t\u1eeb:<code data-backticks=\"1\">\u0111\u1eb7t<\/code>,\u00a0<code data-backticks=\"1\">qu\u1ea3n l\u00fd<\/code>,\u00a0<code data-backticks=\"1\">ch\u1ee9a<\/code><\/p>\n<\/li>\n<\/ul>\n<h4>V\u00ed d\u1ee5 \u0111\u01a1n gi\u1ea3n v\u1ec1 li\u00ean k\u1ebft:<\/h4>\n<p><img alt=\"Simple Association\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/10-simple-association-example.png\"\/><\/p>\n<h4>\ud83d\udd22 Cardinality (\u0110a d\u1ea1ng)<\/h4>\n<p>X\u00e1c \u0111\u1ecbnh s\u1ed1 l\u01b0\u1ee3ng th\u1ec3 hi\u1ec7n tham gia:<\/p>\n<table>\n<thead>\n<tr>\n<th>K\u00fd hi\u1ec7u<\/th>\n<th>\u00dd ngh\u0129a<\/th>\n<th>V\u00ed d\u1ee5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><code data-backticks=\"1\">1<\/code><\/td>\n<td>Ch\u00ednh x\u00e1c m\u1ed9t<\/td>\n<td>M\u1ed9t kh\u00e1ch h\u00e0ng \u0111\u1eb7t m\u1ed9t \u0111\u01a1n h\u00e0ng<\/td>\n<\/tr>\n<tr>\n<td><code data-backticks=\"1\">0..1<\/code><\/td>\n<td>Kh\u00f4ng ho\u1eb7c m\u1ed9t<\/td>\n<td>M\u1ed9t ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 c\u00f3 m\u1ed9t h\u1ed3 s\u01a1<\/td>\n<\/tr>\n<tr>\n<td><code data-backticks=\"1\">*<\/code>\u00a0ho\u1eb7c\u00a0<code data-backticks=\"1\">0..*<\/code><\/td>\n<td>Kh\u00f4ng ho\u1eb7c nhi\u1ec1u<\/td>\n<td>M\u1ed9t ph\u00f2ng ban c\u00f3 nhi\u1ec1u nh\u00e2n vi\u00ean<\/td>\n<\/tr>\n<tr>\n<td><code data-backticks=\"1\">1..*<\/code><\/td>\n<td>M\u1ed9t ho\u1eb7c nhi\u1ec1u<\/td>\n<td>M\u1ed9t \u0111\u01a1n h\u00e0ng c\u00f3 \u00edt nh\u1ea5t m\u1ed9t m\u1eb7t h\u00e0ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img alt=\"Cardinality\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/11-associations-with-different-multiplicies.png\"\/><\/p>\n<h3>3\ufe0f\u20e3 Aggregation \u2192 \u201cC\u00d3-M\u1ed8T\u201d (Quy\u1ec1n s\u1edf h\u1eefu y\u1ebfu)<\/h3>\n<ul>\n<li>\n<p>Quan h\u1ec7 \u0111\u1eb7c bi\u1ec7t: m\u1ed1i quan h\u1ec7 \u201cthu\u1ed9c v\u1ec1\u201d<\/p>\n<\/li>\n<li>\n<p>C\u00e1c b\u1ed9 ph\u1eadn c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i\u00a0<strong>\u0111\u1ed9c l\u1eadp<\/strong>\u00a0c\u1ee7a to\u00e0n b\u1ed9<\/p>\n<\/li>\n<li>\n<p>K\u00fd hi\u1ec7u: \u0110\u01b0\u1eddng li\u1ec1n v\u1edbi\u00a0<strong>h\u00ecnh thoi tr\u1ed1ng<\/strong>\u00a0\u1edf \u0111\u1ea7u \u201cto\u00e0n b\u1ed9\u201d<\/p>\n<\/li>\n<\/ul>\n<p><img alt=\"Aggregation\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/12-aggregation.png\"\/><\/p>\n<pre class=\"lang-java\"><code data-language=\"java\">\/\/ V\u00ed d\u1ee5: Ph\u00f2ng ban t\u00edch h\u1ee3p Gi\u00e1o s\u01b0\r\nclass Department {\r\n    private List&lt;Professor&gt; professors; \/\/ Gi\u00e1o s\u01b0 v\u1eabn t\u1ed3n t\u1ea1i ngay c\u1ea3 khi ph\u00f2ng ban gi\u1ea3i th\u1ec3\r\n}<\/code><\/pre>\n<h3>4\ufe0f\u20e3 K\u1ebft h\u1ee3p \u2192 \u201cC\u00d3-M\u1ed8T M\u1ea0NH\u201d (Quy\u1ec1n s\u1edf h\u1eefu m\u1ea1nh)<\/h3>\n<ul>\n<li>\n<p>D\u1ea1ng m\u1ea1nh h\u01a1n c\u1ee7a t\u00edch h\u1ee3p<\/p>\n<\/li>\n<li>\n<p>C\u00e1c b\u1ed9 ph\u1eadn\u00a0<strong>kh\u00f4ng th\u1ec3 t\u1ed3n t\u1ea1i<\/strong>\u00a0m\u00e0 kh\u00f4ng c\u00f3 to\u00e0n b\u1ed9; v\u00f2ng \u0111\u1eddi b\u1ecb li\u00ean k\u1ebft<\/p>\n<\/li>\n<li>\n<p>K\u00fd hi\u1ec7u: \u0110\u01b0\u1eddng li\u1ec1n n\u00e9t v\u1edbi\u00a0<strong>h\u00ecnh kim c\u01b0\u01a1ng \u0111\u1ea7y<\/strong>\u00a0\u1edf \u0111\u1ea7u \u201cto\u00e0n b\u1ed9\u201d<\/p>\n<\/li>\n<\/ul>\n<p><img alt=\"Composition\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/13-composition.png\"\/><\/p>\n<pre class=\"lang-java\"><code data-language=\"java\">\/\/ V\u00ed d\u1ee5: Nh\u00e0 g\u1ed3m c\u00e1c Ph\u00f2ng\r\nclass Nh\u00e0 {\r\n    private List&lt;Ph\u00f2ng&gt; ph\u00f2ng; \/\/ C\u00e1c Ph\u00f2ng s\u1ebd b\u1ecb h\u1ee7y khi nh\u00e0 b\u1ecb ph\u00e1 d\u1ee1\r\n}\r\n<\/code><\/pre>\n<blockquote>\n<p>\u26a0\ufe0f\u00a0<strong>S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh<\/strong>:<\/p>\n<ul>\n<li>\n<p>T\u1ed5 h\u1ee3p:\u00a0<code data-backticks=\"1\">Xe h\u01a1i<\/code>\u00a0c\u00f3\u00a0<code data-backticks=\"1\">B\u00e1nh xe<\/code>\u00a0\u2192 B\u00e1nh xe c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00e1i s\u1eed d\u1ee5ng<\/p>\n<\/li>\n<li>\n<p>Th\u00e0nh ph\u1ea7n:\u00a0<code data-backticks=\"1\">Nh\u00e0<\/code>\u00a0c\u00f3\u00a0<code data-backticks=\"1\">Ph\u00f2ng<\/code>\u00a0\u2192 C\u00e1c ph\u00f2ng kh\u00f4ng th\u1ec3 t\u1ed3n t\u1ea1i n\u1ebfu kh\u00f4ng c\u00f3 ng\u00f4i nh\u00e0<\/p>\n<\/li>\n<\/ul>\n<\/blockquote>\n<h3>5\ufe0f\u20e3 Ph\u1ee5 thu\u1ed9c \u2192 \u201cS\u1eec D\u1ee4NG-T\u1ea0M TH\u1edcI\u201d<\/h3>\n<ul>\n<li>\n<p>M\u1ed9t l\u1edbp\u00a0<strong>ph\u1ee5 thu\u1ed9c v\u00e0o<\/strong>\u00a0l\u1edbp kh\u00e1c \u0111\u1ec3 tri\u1ec3n khai (v\u00ed d\u1ee5: tham s\u1ed1 ph\u01b0\u01a1ng th\u1ee9c)<\/p>\n<\/li>\n<li>\n<p>Kh\u00f4ng ph\u1ea3i m\u1ed1i quan h\u1ec7 c\u1ea5u tr\u00fac; thay \u0111\u1ed5i \u1edf nh\u00e0 cung c\u1ea5p c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u00e1ch h\u00e0ng<\/p>\n<\/li>\n<li>\n<p>K\u00fd hi\u1ec7u:\u00a0<strong>\u0110\u01b0\u1eddng g\u1ea1ch n\u1ed1i v\u1edbi m\u0169i t\u00ean h\u1edf<\/strong><\/p>\n<\/li>\n<\/ul>\n<p><img alt=\"Dependency\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/14-dependency.png\"\/><\/p>\n<h4>V\u00ed d\u1ee5 th\u1ef1c t\u1ebf: Ng\u01b0\u1eddi \u0111\u1ecdc S\u00e1ch<\/h4>\n<p><img alt=\"Dependency\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/15-dependency-example.png\"\/><\/p>\n<pre class=\"lang-java\"><code data-language=\"java\">class Ng\u01b0\u1eddi {\r\n    boolean \u0111\u00e3\u0110\u1ecdc(S\u00e1ch s\u00e1ch) { ... } \/\/ S\u00e1ch l\u00e0 tham s\u1ed1 \u2192 ph\u1ee5 thu\u1ed9c\r\n}\r\n<\/code><\/pre>\n<h3>6\ufe0f\u20e3 Th\u1ef1c hi\u1ec7n \u2192 \u201cTH\u1ef0C HI\u1ec6N\u201d<\/h3>\n<ul>\n<li>\n<p>M\u1ed1i quan h\u1ec7 gi\u1eefa m\u1ed9t\u00a0<strong>giao di\u1ec7n<\/strong>\u00a0v\u00e0 l\u1edbp tri\u1ec3n khai c\u1ee7a n\u00f3<\/p>\n<\/li>\n<li>\n<p>K\u00fd hi\u1ec7u:\u00a0<strong>\u0110\u01b0\u1eddng n\u00e9t \u0111\u1ee9t v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean h\u00ecnh tam gi\u00e1c r\u1ed7ng<\/strong><\/p>\n<\/li>\n<\/ul>\n<p><img alt=\"Realization\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/16-realization.png\"\/><\/p>\n<pre class=\"lang-java\"><code data-language=\"java\">\/\/ V\u00ed d\u1ee5 Java\r\ninterface Owner {\r\n    void acquireProperty();\r\n    void disposeProperty();\r\n}\r\nclass Person implements Owner { ... }\r\nclass Corporation implements Owner { ... }\r\n<\/code><\/pre>\n<hr\/>\n<h2>\ud83d\udd39 C\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf<\/h2>\n<h3>\ud83d\uded2 V\u00ed d\u1ee5 1: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd \u0111\u01a1n h\u00e0ng<\/h3>\n<p><img alt=\"Class Diagram Example: Order System\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/17-class-diagram-example-order-system.png\"\/><\/p>\n<p><strong>Nh\u1eefng \u0111i\u1ec3m ch\u00ednh c\u1ea7n l\u01b0u \u00fd<\/strong>:<\/p>\n<ul>\n<li>\n<p><code data-backticks=\"1\">Kh\u00e1ch h\u00e0ng<\/code>\u00a0<em>\u0111\u1eb7t<\/em>\u00a0<code data-backticks=\"1\">\u0110\u01a1n h\u00e0ng<\/code>\u00a0(quan h\u1ec7, 1..*)<\/p>\n<\/li>\n<li>\n<p><code data-backticks=\"1\">\u0110\u01a1n h\u00e0ng<\/code>\u00a0<em>g\u1ed3m c\u00f3<\/em>\u00a0<code data-backticks=\"1\">Chi ti\u1ebft \u0111\u01a1n h\u00e0ng<\/code>\u00a0(th\u00e0nh ph\u1ea7n)<\/p>\n<\/li>\n<li>\n<p><code data-backticks=\"1\">Chi ti\u1ebft \u0111\u01a1n h\u00e0ng<\/code>\u00a0<em>tham chi\u1ebfu \u0111\u1ebfn<\/em>\u00a0<code data-backticks=\"1\">S\u1ea3n ph\u1ea9m<\/code>\u00a0(quan h\u1ec7)<\/p>\n<\/li>\n<li>\n<p><code data-backticks=\"1\">Thanh to\u00e1n<\/code>\u00a0<em>th\u1ef1c hi\u1ec7n<\/em>\u00a0<code data-backticks=\"1\">IPayment<\/code>\u00a0giao di\u1ec7n (th\u1ef1c hi\u1ec7n)<\/p>\n<\/li>\n<\/ul>\n<h3>\ud83d\udcbb V\u00ed d\u1ee5 2: \u1ee8ng d\u1ee5ng GUI v\u1edbi ghi ch\u00fa<\/h3>\n<p><img alt=\"Class Diagram Example: GUI\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2026\/03\/18-uml-class-diagram-example-gui.png\"\/><\/p>\n<p><strong>Nh\u1eefng \u0111i\u1ec3m ch\u00ednh c\u1ea7n l\u01b0u \u00fd<\/strong>:<\/p>\n<ul>\n<li>\n<p>Ghi ch\u00fa (h\u1ed9p m\u00e0u v\u00e0ng) th\u00eam gi\u1ea3i th\u00edch m\u00e0 kh\u00f4ng l\u00e0m r\u1ed1i c\u00e1c l\u1edbp<\/p>\n<\/li>\n<li>\n<p><code data-backticks=\"1\">JFrame<\/code>\u00a0<em>ch\u1ee9a<\/em>\u00a0<code data-backticks=\"1\">JPanel<\/code>\u00a0(th\u00e0nh ph\u1ea7n)<\/p>\n<\/li>\n<li>\n<p>Ng\u01b0\u1eddi nghe s\u1ef1 ki\u1ec7n s\u1eed d\u1ee5ng m\u1ed1i quan h\u1ec7 ph\u1ee5 thu\u1ed9c<\/p>\n<\/li>\n<\/ul>\n<hr\/>\n<h2>\ud83d\udd39 C\u00f4ng c\u1ee5 UML \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t<\/h2>\n<table>\n<thead>\n<tr>\n<th>C\u00f4ng c\u1ee5<\/th>\n<th>T\u1ed1t nh\u1ea5t cho<\/th>\n<th>Gi\u00e1 c\u1ea3<\/th>\n<th>N\u1ec1n t\u1ea3ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\ud83e\udd47\u00a0<strong>Phi\u00ean b\u1ea3n c\u1ed9ng \u0111\u1ed3ng Visual Paradigm<\/strong><\/td>\n<td>Ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u, sinh vi\u00ean, h\u1ed7 tr\u1ee3 \u0111\u1ea7y \u0111\u1ee7 UML<\/td>\n<td>\u2705\u00a0<strong>Mi\u1ec5n ph\u00ed<\/strong><\/td>\n<td>Win\/macOS\/Linux<\/td>\n<\/tr>\n<tr>\n<td>Lucidchart<\/td>\n<td>H\u1ee3p t\u00e1c, d\u1ef1a tr\u00ean web<\/td>\n<td>Freemium<\/td>\n<td>Web<\/td>\n<\/tr>\n<tr>\n<td>draw.io (diagrams.net)<\/td>\n<td>S\u01a1 \u0111\u1ed3 nhanh, \u0111\u01a1n gi\u1ea3n<\/td>\n<td>\u2705 Mi\u1ec5n ph\u00ed<\/td>\n<td>Web\/Thi\u1ebft b\u1ecb \u0111\u1ec3 b\u00e0n<\/td>\n<\/tr>\n<tr>\n<td>StarUML<\/td>\n<td>Nh\u1eb9, d\u1ec5 m\u1edf r\u1ed9ng<\/td>\n<td>Tr\u1ea3 ph\u00ed (th\u1eed nghi\u1ec7m mi\u1ec5n ph\u00ed)<\/td>\n<td>Win\/macOS\/Linux<\/td>\n<\/tr>\n<tr>\n<td>Enterprise Architect<\/td>\n<td>\u0110\u1ed9i l\u1edbn, h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p<\/td>\n<td>Tr\u1ea3 ph\u00ed<\/td>\n<td>Th\u1eafng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\ud83c\udfc6 T\u1ea1i sao ch\u1ecdn phi\u00ean b\u1ea3n c\u1ed9ng \u0111\u1ed3ng c\u1ee7a Visual Paradigm?<\/h3>\n<p>\u2705\u00a0<strong>100% Mi\u1ec5n ph\u00ed<\/strong>\u00a0d\u00e0nh cho h\u1ecdc t\u1eadp v\u00e0 s\u1eed d\u1ee5ng phi th\u01b0\u01a1ng m\u1ea1i<br \/>\n\u2705\u00a0<strong>T\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i s\u01a1 \u0111\u1ed3 UML 2.x<\/strong>\u00a0\u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 (L\u1edbp, Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, Chu\u1ed7i, v.v.)<br \/>\n\u2705\u00a0<strong>Giao di\u1ec7n k\u00e9o v\u00e0 th\u1ea3 tr\u1ef1c quan<\/strong>\u00a0\u2013 kh\u00f4ng c\u1ea7n l\u1eadp tr\u00ecnh<br \/>\n\u2705\u00a0<strong>K\u1ef9 thu\u1eadt m\u00e3 h\u00f3a<\/strong>: T\u1ea1o m\u00e3 t\u1eeb s\u01a1 \u0111\u1ed3 &amp; k\u1ef9 thu\u1eadt ng\u01b0\u1ee3c<br \/>\n\u2705\u00a0<strong>\u0110a n\u1ec1n t\u1ea3ng<\/strong>: Windows, macOS, Linux<br \/>\n\u2705\u00a0<strong>\u0110\u01b0\u1ee3c trao gi\u1ea3i th\u01b0\u1edfng<\/strong>: \u0110\u01b0\u1ee3c tin t\u01b0\u1edfng b\u1edfi c\u00e1c tr\u01b0\u1eddng \u0111\u1ea1i h\u1ecdc v\u00e0 chuy\u00ean gia tr\u00ean to\u00e0n th\u1ebf gi\u1edbi<\/p>\n<p>\ud83d\udd17\u00a0<a href=\"https:\/\/www.visual-paradigm.com\/download\/community.jsp\">T\u1ea3i xu\u1ed1ng phi\u00ean b\u1ea3n c\u1ed9ng \u0111\u1ed3ng c\u1ee7a Visual Paradigm mi\u1ec5n ph\u00ed<\/a><\/p>\n<hr\/>\n<h2>\ud83d\udd39 B\u1eaft \u0111\u1ea7u v\u1edbi Visual Paradigm: C\u00e0i \u0111\u1eb7t trong 5 ph\u00fat<\/h2>\n<ol>\n<li>\n<p><strong>T\u1ea3i xu\u1ed1ng &amp; C\u00e0i \u0111\u1eb7t<\/strong><br \/>\n\u2192 Truy c\u1eadp\u00a0<a href=\"https:\/\/www.visual-paradigm.com\/download\/community.jsp\">visual-paradigm.com\/download\/community.jsp<\/a><br \/>\n\u2192 Ch\u1ecdn h\u1ec7 \u0111i\u1ec1u h\u00e0nh c\u1ee7a b\u1ea1n \u2192 C\u00e0i \u0111\u1eb7t (m\u1ea5t \u00edt h\u01a1n 2 ph\u00fat)<\/p>\n<\/li>\n<li>\n<p><strong>T\u1ea1o d\u1ef1 \u00e1n m\u1edbi<\/strong><br \/>\n\u2192 M\u1edf VP \u2192\u00a0<code data-backticks=\"1\">D\u1ef1 \u00e1n<\/code>\u00a0\u2192\u00a0<code data-backticks=\"1\">M\u1edbi<\/code>\u00a0\u2192 Ch\u1ecdn \u201cS\u01a1 \u0111\u1ed3 L\u1edbp\u201d<\/p>\n<\/li>\n<li>\n<p><strong>Th\u00eam l\u1edbp \u0111\u1ea7u ti\u00ean c\u1ee7a b\u1ea1n<\/strong><br \/>\n\u2192 K\u00e9o \u201cL\u1edbp\u201d t\u1eeb b\u1ea3ng c\u00f4ng c\u1ee5 \u2192 Nh\u1ea5p \u0111\u00fap \u0111\u1ec3 ch\u1ec9nh s\u1eeda t\u00ean<br \/>\n\u2192 Nh\u1ea5p chu\u1ed9t ph\u1ea3i v\u00e0o l\u1edbp \u2192\u00a0<code data-backticks=\"1\">Th\u00eam<\/code>\u00a0\u2192\u00a0<code data-backticks=\"1\">Thu\u1ed9c t\u00ednh<\/code>\u00a0\/\u00a0<code data-backticks=\"1\">Thao t\u00e1c<\/code><\/p>\n<\/li>\n<li>\n<p><strong>V\u1ebd m\u1ed1i quan h\u1ec7<\/strong><br \/>\n\u2192 S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 m\u1ed1i quan h\u1ec7 (K\u1ebf th\u1eeba, Li\u00ean k\u1ebft, v.v.) t\u1eeb thanh c\u00f4ng c\u1ee5<br \/>\n\u2192 Nh\u1ea5p v\u00e0o l\u1edbp ngu\u1ed3n \u2192 K\u00e9o \u0111\u1ebfn l\u1edbp \u0111\u00edch<\/p>\n<\/li>\n<li>\n<p><strong>Xu\u1ea5t v\u00e0 Chia s\u1ebb<\/strong><br \/>\n\u2192\u00a0<code data-backticks=\"1\">S\u01a1 \u0111\u1ed3<\/code>\u00a0\u2192\u00a0<code data-backticks=\"1\">Xu\u1ea5t<\/code>\u00a0\u2192 PNG\/PDF\/SVG<br \/>\n\u2192 Ho\u1eb7c t\u1ea1o m\u00e3 Java\/C#:\u00a0<code data-backticks=\"1\">C\u00f4ng c\u1ee5<\/code>\u00a0\u2192\u00a0<code data-backticks=\"1\">K\u1ef9 thu\u1eadt m\u00e3 h\u00f3a<\/code><\/p>\n<\/li>\n<\/ol>\n<p>\ud83c\udfac\u00a0<strong>M\u1eb9o chuy\u00ean gia<\/strong>: S\u1eed d\u1ee5ng\u00a0<code data-backticks=\"1\">M\u00f4 h\u00ecnh<\/code>\u00a0\u2192\u00a0<code data-backticks=\"1\">B\u00e1o c\u00e1o M\u00f4 h\u00ecnh<\/code>t\u1ef1 \u0111\u1ed9ng t\u1ea1o t\u00e0i li\u1ec7u t\u1eeb s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n!<\/p>\n<hr\/>\n<h2>\ud83c\udfaf B\u1ea3n t\u00f3m t\u1eaft nhanh tham kh\u1ea3o<\/h2>\n<h3>T\u00f3m t\u1eaft ng\u1eef ph\u00e1p s\u01a1 \u0111\u1ed3 l\u1edbp<\/h3>\n<pre><code>+---------------------+\r\n|     ClassName       |  \u2190 Tr\u00ean: T\u00ean (b\u1eaft bu\u1ed9c)\r\n+---------------------+\r\n| - attr : Ki\u1ec3u       |  \u2190 Gi\u1eefa: Thu\u1ed9c t\u00ednh\r\n| + name : Chu\u1ed7i      |\r\n+---------------------+\r\n| + method() : Ki\u1ec3u   |  \u2190 D\u01b0\u1edbi: Thao t\u00e1c\r\n| - calc(x: int):int  |\r\n+---------------------+\r\n<\/code><\/pre>\n<h3>H\u01b0\u1edbng d\u1eabn nhanh k\u00fd hi\u1ec7u m\u1ed1i quan h\u1ec7<\/h3>\n<table>\n<thead>\n<tr>\n<th>M\u1ed1i quan h\u1ec7<\/th>\n<th>K\u00fd hi\u1ec7u<\/th>\n<th>T\u1eeb kh\u00f3a<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>K\u1ebf th\u1eeba<\/td>\n<td>\u2500\u2500\u2500\u25b7<\/td>\n<td>\u201cl\u00e0-m\u1ed9t\u201d<\/td>\n<\/tr>\n<tr>\n<td>Li\u00ean k\u1ebft<\/td>\n<td>\u2500\u2500\u2500<\/td>\n<td>\u201cc\u00f3-m\u1ed9t\u201d\/\u201ds\u1eed d\u1ee5ng\u201d<\/td>\n<\/tr>\n<tr>\n<td>T\u1ed5 h\u1ee3p<\/td>\n<td>\u2500\u2500\u2500\u25c7<\/td>\n<td>\u201cthu\u1ed9c-ph\u1ea7n\u201d (y\u1ebfu)<\/td>\n<\/tr>\n<tr>\n<td>Th\u00e0nh ph\u1ea7n<\/td>\n<td>\u2500\u2500\u2500\u25c6<\/td>\n<td>\u201cthu\u1ed9c-ph\u1ea7n\u201d (m\u1ea1nh)<\/td>\n<\/tr>\n<tr>\n<td>Ph\u1ee5 thu\u1ed9c<\/td>\n<td>\u2013 \u2013 -&gt;<\/td>\n<td>\u201cs\u1eed d\u1ee5ng t\u1ea1m th\u1eddi\u201d<\/td>\n<\/tr>\n<tr>\n<td>Th\u1ef1c hi\u1ec7n<\/td>\n<td>\u2013 \u2013 \u25b7<\/td>\n<td>\u201cth\u1ef1c thi\u201d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr\/>\n<h2>\ud83d\ude80 C\u00e1c b\u01b0\u1edbc ti\u1ebfp theo cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u UML<\/h2>\n<ol>\n<li>\n<p>\u2705\u00a0<strong>Th\u1ef1c h\u00e0nh<\/strong>: M\u00f4 h\u00ecnh h\u00f3a m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u01a1n gi\u1ea3n (Th\u01b0 vi\u1ec7n, T\u00e0i kho\u1ea3n ng\u00e2n h\u00e0ng, Gi\u1ecf h\u00e0ng mua s\u1eafm)<\/p>\n<\/li>\n<li>\n<p>\u2705\u00a0<strong>Reverse-Engineer<\/strong>: Nh\u1eadp m\u00e3 Java\/C# hi\u1ec7n c\u00f3 v\u00e0o Visual Paradigm \u0111\u1ec3 xem c\u00e1c s\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c t\u1ea1o t\u1ef1 \u0111\u1ed9ng<\/p>\n<\/li>\n<li>\n<p>\u2705\u00a0<strong>H\u1ee3p t\u00e1c<\/strong>: Chia s\u1ebb s\u01a1 \u0111\u1ed3 v\u1edbi \u0111\u1ed3ng \u0111\u1ed9i \u0111\u1ec3 xem x\u00e9t thi\u1ebft k\u1ebf<\/p>\n<\/li>\n<li>\n<p>\u2705\u00a0<strong>L\u1eb7p l\u1ea1i<\/strong>: B\u1eaft \u0111\u1ea7u t\u1eeb kh\u00e1i ni\u1ec7m \u2192 tinh ch\u1ec9nh th\u00e0nh tri\u1ec3n khai khi b\u1ea1n vi\u1ebft m\u00e3<\/p>\n<\/li>\n<li>\n<p>\u2705\u00a0<strong>Kh\u00e1m ph\u00e1<\/strong>: H\u1ecdc s\u01a1 \u0111\u1ed3 Use Case, Sequence v\u00e0 Activity ti\u1ebfp theo<\/p>\n<\/li>\n<\/ol>\n<blockquote>\n<p>\ud83d\udcac\u00a0<strong>Nh\u1edb r\u1eb1ng<\/strong>: UML l\u00e0 m\u1ed9t<em>c\u00f4ng c\u1ee5 giao ti\u1ebfp<\/em>, kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t th\u1ee7 t\u1ee5c r\u01b0\u1eddm r\u00e0. Gi\u1eef s\u01a1 \u0111\u1ed3 \u0111\u01a1n gi\u1ea3n nh\u01b0 c\u1ea7n thi\u1ebft \u2014 v\u00e0 kh\u00f4ng \u0111\u01a1n gi\u1ea3n h\u01a1n th\u1ebf.<\/p>\n<\/blockquote>\n<hr\/>\n<p>\u2728\u00a0<strong>B\u1ea1n \u0111\u00e3 s\u1eb5n s\u00e0ng \u0111\u1ec3 thi\u1ebft k\u1ebf nh\u01b0 m\u1ed9t chuy\u00ean gia!<\/strong><br \/>\nB\u1eaft \u0111\u1ea7u m\u00f4 h\u00ecnh h\u00f3a s\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u1ea7u ti\u00ean c\u1ee7a b\u1ea1n ngay h\u00f4m nay v\u1edbi\u00a0<a href=\"https:\/\/www.visual-paradigm.com\/download\/community.jsp\">Phi\u00ean b\u1ea3n C\u1ed9ng \u0111\u1ed3ng Visual Paradigm<\/a>\u00a0\u2014 mi\u1ec5n ph\u00ed, m\u1ea1nh m\u1ebd v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u.<\/p>\n<p class=\"\"><em>Ch\u00fac b\u1ea1n thi\u1ebft k\u1ebf vui v\u1ebb!<\/em>\u00a0\ud83c\udfa8\ud83d\udd27\ud83d\ude80<\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u1ecdc Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t v\u1edbi Visual Paradigm \u201cM\u1ed9t b\u1ee9c tranh \u0111\u00e1ng gi\u00e1 m\u1ed9t ngh\u00ecn d\u00f2ng m\u00e3\u201d\u00a0\u2014<\/p>\n","protected":false},"author":11,"featured_media":11136,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","footnotes":""},"categories":[3],"tags":[],"class_list":["post-11135","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unified-modeling-language"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - 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