{"id":10869,"date":"2026-03-06T01:17:59","date_gmt":"2026-03-05T17:17:59","guid":{"rendered":"https:\/\/www.archimetric.com\/vn\/what-is-class-diagram\/"},"modified":"2026-03-06T01:17:59","modified_gmt":"2026-03-05T17:17:59","slug":"what-is-class-diagram","status":"publish","type":"post","link":"https:\/\/www.archimetric.com\/vn\/what-is-class-diagram\/","title":{"rendered":"S\u01a1 \u0111\u1ed3 l\u1edbp l\u00e0 g\u00ec?"},"content":{"rendered":"<p><span style=\"font-size: 1.125rem;\">Trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m, m\u1ed9t<\/span><a href=\"https:\/\/en.wikipedia.org\/wiki\/Unified_Modeling_Language\" rel=\"noopener\" style=\"font-size: 1.125rem;\" target=\"_blank\">Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML)<\/a><span style=\"font-size: 1.125rem;\">s\u01a1 \u0111\u1ed3 l\u1edbp l\u00e0 m\u1ed9t<\/span><strong style=\"font-size: 1.125rem;\">s\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac t\u0129nh<\/strong><span style=\"font-size: 1.125rem;\">m\u00f4 t\u1ea3 c\u1ea5u tr\u00fac c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1ch hi\u1ec3n th\u1ecb c\u00e1c l\u1edbp, thu\u1ed9c t\u00ednh, thao t\u00e1c (ho\u1eb7c ph\u01b0\u01a1ng th\u1ee9c) c\u1ee7a ch\u00fang, v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng.<\/span><\/p>\n<p><!-- more --><\/p>\n<div class=\"content-container-alt\">\n<div class=\"row small-12 medium-12 large-12 columns\">\n<div class=\"medium-12 large-9 columns float-right\">\n<section data-magellan-target=\"what-is-class-diagram\" id=\"what-is-class-diagram\">\n<div class=\"space-gap-small\"><\/div>\n<p><img alt=\"Class diagram in UML diagram hierarchy\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2022\/02\/01-class-diagram-in-uml-diagram-hierarchy.png\"\/><\/p>\n<\/section>\n<div class=\"bs-calltoaction bs-calltoaction-default\">\n<div class=\"row\">\n<div class=\"medium-10 columns cta-contents\">\n<div class=\"cta-desc\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<section data-magellan-target=\"purposes-of-class-diagram\" id=\"purposes-of-class-diagram\">\n<h2>M\u1ee5c \u0111\u00edch c\u1ee7a s\u01a1 \u0111\u1ed3 l\u1edbp<\/h2>\n<div class=\"space-gap\"><\/div>\n<ol class=\"purpose-list\">\n<li>Hi\u1ec3n th\u1ecb c\u1ea5u tr\u00fac t\u0129nh c\u1ee7a c\u00e1c b\u1ed9 ph\u00e2n lo\u1ea1i trong h\u1ec7 th\u1ed1ng<\/li>\n<li>Cung c\u1ea5p n\u1ec1n t\u1ea3ng k\u00fd hi\u1ec7u cho c\u00e1c s\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac UML kh\u00e1c<\/li>\n<li>R\u1ea5t h\u1eefu \u00edch cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 c\u00e1c th\u00e0nh vi\u00ean kh\u00e1c trong nh\u00f3m<\/li>\n<li>C\u00e1c nh\u00e0 ph\u00e2n t\u00edch kinh doanh c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a h\u1ec7 th\u1ed1ng t\u1eeb g\u00f3c nh\u00ecn kinh doanh<\/li>\n<\/ol>\n<p>S\u01a1 \u0111\u1ed3 l\u1edbp UML bao g\u1ed3m:<\/p>\n<ul>\n<li>M\u1ed9t t\u1eadp h\u1ee3p c\u00e1c l\u1edbp<\/li>\n<li>M\u1ed9t t\u1eadp h\u1ee3p c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c l\u1edbp<\/li>\n<\/ul>\n<\/section>\n<section data-magellan-target=\"what-is-a-class\" id=\"what-is-a-class\">\n<h2>L\u1edbp l\u00e0 g\u00ec?<\/h2>\n<p>M\u1ed9t m\u00f4 t\u1ea3 v\u1ec1 m\u1ed9t nh\u00f3m \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 vai tr\u00f2 t\u01b0\u01a1ng t\u1ef1, bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>C\u00e1c \u0111\u1eb7c tr\u01b0ng c\u1ea5u tr\u00fac<\/strong> (thu\u1ed9c t\u00ednh): x\u00e1c \u0111\u1ecbnh nh\u1eefng g\u00ec c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ee7a l\u1edbp \u201cbi\u1ebft\u201d\n<ul>\n<li>\u0110\u4ee3\u8868 tr\u1ea1ng th\u00e1i c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng<\/li>\n<li>M\u00f4 t\u1ea3 c\u1ea5u tr\u00fac ho\u1eb7c \u0111\u1eb7c \u0111i\u1ec3m t\u0129nh c\u1ee7a l\u1edbp<\/li>\n<\/ul>\n<\/li>\n<li><strong>C\u00e1c \u0111\u1eb7c tr\u01b0ng h\u00e0nh vi<\/strong> (thao t\u00e1c): x\u00e1c \u0111\u1ecbnh nh\u1eefng g\u00ec c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ee7a l\u1edbp \u201cc\u00f3 th\u1ec3 l\u00e0m\u201d\n<ul>\n<li>X\u00e1c \u0111\u1ecbnh c\u00e1ch c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c<\/li>\n<li>M\u00f4 t\u1ea3 h\u00e0nh vi ho\u1eb7c \u0111\u1eb7c \u0111i\u1ec3m \u0111\u1ed9ng c\u1ee7a l\u1edbp<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/section>\n<section data-magellan-target=\"class-notation\" id=\"class-notation\">\n<h2>K\u00fd hi\u1ec7u l\u1edbp<\/h2>\n<p>K\u00fd hi\u1ec7u l\u1edbp bao g\u1ed3m ba ph\u1ea7n:<\/p>\n<ol class=\"purpose-list\">\n<li><strong>T\u00ean l\u1edbp<\/strong>\n<ul>\n<li>T\u00ean l\u1edbp xu\u1ea5t hi\u1ec7n trong \u00f4 \u0111\u1ea7u ti\u00ean.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Thu\u1ed9c t\u00ednh l\u1edbp<\/strong>\n<ul>\n<li>C\u00e1c thu\u1ed9c t\u00ednh \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb trong \u00f4 th\u1ee9 hai.<\/li>\n<li>Lo\u1ea1i \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb sau d\u1ea5u hai ch\u1ea5m.<\/li>\n<li>Thu\u1ed9c t\u00ednh \u00e1nh x\u1ea1 \u0111\u1ebfn c\u00e1c bi\u1ebfn th\u00e0nh vi\u00ean (c\u00e1c th\u00e0nh vi\u00ean d\u1eef li\u1ec7u) trong m\u00e3 ngu\u1ed3n.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Thao t\u00e1c l\u1edbp<\/strong> (ph\u01b0\u01a1ng th\u1ee9c)\n<ul>\n<li>C\u00e1c thao t\u00e1c \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb trong ng\u0103n th\u1ee9 ba. Ch\u00fang \u0111\u1ea1i di\u1ec7n cho c\u00e1c d\u1ecbch v\u1ee5 do l\u1edbp cung c\u1ea5p.<\/li>\n<li>Ki\u1ec3u tr\u1ea3 v\u1ec1 xu\u1ea5t hi\u1ec7n sau d\u1ea5u hai ch\u1ea5m \u1edf cu\u1ed1i k\u00fd hi\u1ec7u ph\u01b0\u01a1ng th\u1ee9c.<\/li>\n<li>Ki\u1ec3u tham s\u1ed1 xu\u1ea5t hi\u1ec7n sau d\u1ea5u hai ch\u1ea5m theo sau t\u00ean tham s\u1ed1.<\/li>\n<li>C\u00e1c thao t\u00e1c \u00e1nh x\u1ea1 \u0111\u1ebfn c\u00e1c ph\u01b0\u01a1ng th\u1ee9c l\u1edbp trong m\u00e3 ngu\u1ed3n.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><img alt=\"Simple class\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2022\/02\/02-simple-class.png\"\/><\/p>\n<div class=\"space-gap-small\"><\/div>\n<p>Bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda c\u1ee7a l\u1edbp<strong>MyClass<\/strong> nh\u01b0 \u0111\u00e3 hi\u1ec3n th\u1ecb \u1edf tr\u00ean:<\/p>\n<ul>\n<li>MyClass c\u00f3 3 thu\u1ed9c t\u00ednh v\u00e0 3 thao t\u00e1c<\/li>\n<li>Tham s\u1ed1 p3 c\u1ee7a op2 c\u00f3 ki\u1ec3u int<\/li>\n<li>op2 tr\u1ea3 v\u1ec1 m\u1ed9t float<\/li>\n<li>op3 tr\u1ea3 v\u1ec1 m\u1ed9t con tr\u1ecf (\u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh b\u1eb1ng *) \u0111\u1ebfn Class6<\/li>\n<\/ul>\n<\/section>\n<section data-magellan-target=\"class-relationships\" id=\"class-relationships\">\n<h2>M\u1ed1i quan h\u1ec7 l\u1edbp<\/h2>\n<p>M\u1ed9t l\u1edbp c\u00f3 th\u1ec3 tham gia v\u00e0o m\u1ed9t ho\u1eb7c nhi\u1ec1u m\u1ed1i quan h\u1ec7 v\u1edbi c\u00e1c l\u1edbp kh\u00e1c. C\u00e1c m\u1ed1i quan h\u1ec7 c\u00f3 th\u1ec3 thu\u1ed9c c\u00e1c lo\u1ea1i sau: (Xem h\u00ecnh \u1ea3nh b\u00ean ph\u1ea3i \u0111\u1ec3 xem c\u00e1c bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda).<\/p>\n<div class=\"editions\">\n<table class=\"stack\">\n<tbody>\n<tr>\n<th>Lo\u1ea1i m\u1ed1i quan h\u1ec7<\/th>\n<th width=\"250\">S\u01a1 \u0111\u1ed3<\/th>\n<\/tr>\n<tr>\n<td><strong>K\u1ebf th\u1eeba<\/strong> (ho\u1eb7c t\u1ed5ng qu\u00e1t h\u00f3a):<\/p>\n<ul>\n<li>\u0110\u1ea1i di\u1ec7n cho m\u1ed1i quan h\u1ec7 &#8220;l\u00e0 m\u1ed9t&#8221;.<\/li>\n<li>T\u00ean l\u1edbp tr\u1eebu t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb in nghi\u00eang.<\/li>\n<li>SubClass1 v\u00e0 SubClass2 l\u00e0 c\u00e1c \u0111\u1eb7c t\u1ea3 c\u1ee7a SuperClass.<\/li>\n<li>\u0110\u01b0\u1eddng n\u00e9t li\u1ec1n v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean h\u1edf ch\u1ec9 t\u1eeb l\u1edbp con \u0111\u1ebfn l\u1edbp cha.<\/li>\n<\/ul>\n<\/td>\n<td><img alt=\"Inheritance\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2022\/02\/03-inheritance.png\"\/><\/td>\n<\/tr>\n<tr>\n<td><strong>Li\u00ean k\u1ebft \u0111\u01a1n gi\u1ea3n<\/strong>:<\/p>\n<ul>\n<li>M\u1ed9t li\u00ean k\u1ebft c\u1ea5u tr\u00fac gi\u1eefa hai l\u1edbp t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/li>\n<li>Li\u00ean k\u1ebft t\u1ed3n t\u1ea1i gi\u1eefa Class1 v\u00e0 Class2.<\/li>\n<li>\u0110\u01b0\u1eddng n\u00e9t li\u1ec1n n\u1ed1i hai l\u1edbp.<\/li>\n<\/ul>\n<\/td>\n<td><img alt=\"Simple association\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2022\/02\/04-simple-association.png\"\/><\/td>\n<\/tr>\n<tr>\n<td><strong>T\u1eadp h\u1ee3p<\/strong>:<\/p>\n<ul>\n<li>M\u1ed9t lo\u1ea1i li\u00ean k\u1ebft \u0111\u1eb7c bi\u1ec7t bi\u1ec3u di\u1ec5n m\u1ed1i quan h\u1ec7 &#8220;thu\u1ed9c v\u1ec1&#8221;.<\/li>\n<li>L\u1edbp2 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a L\u1edbp1.<\/li>\n<li>Nhi\u1ec1u th\u1ec3 hi\u1ec7n c\u1ee7a L\u1edbp2 (\u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh b\u1eb1ng d\u1ea5u *) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi L\u1edbp1.<\/li>\n<li>C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng L\u1edbp1 v\u00e0 L\u1edbp2 c\u00f3 v\u00f2ng \u0111\u1eddi \u0111\u1ed9c l\u1eadp.<\/li>\n<li>H\u00ecnh kim c\u01b0\u01a1ng h\u1edf \u1edf \u0111\u1ea7u l\u1edbp t\u1ed5ng h\u1ee3p.<\/li>\n<\/ul>\n<\/td>\n<td><img alt=\"Aggregation\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2022\/02\/05-aggregation.png\"\/><\/td>\n<\/tr>\n<tr>\n<td><strong>Th\u00e0nh ph\u1ea7n<\/strong>:<\/p>\n<ul>\n<li>M\u1ed9t lo\u1ea1i t\u1eadp h\u1ee3p \u0111\u1eb7c bi\u1ec7t trong \u0111\u00f3 c\u00e1c b\u1ed9 ph\u1eadn b\u1ecb h\u1ee7y khi to\u00e0n b\u1ed9 b\u1ecb h\u1ee7y.<\/li>\n<li>C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng L\u1edbp2 s\u1ed1ng v\u00e0 ch\u1ebft c\u00f9ng L\u1edbp1.<\/li>\n<li>L\u1edbp2 kh\u00f4ng th\u1ec3 t\u1ed3n t\u1ea1i \u0111\u1ed9c l\u1eadp.<\/li>\n<li>H\u00ecnh kim c\u01b0\u01a1ng \u0111\u1ea7y \u1edf \u0111\u1ea7u l\u1edbp t\u1ed5ng h\u1ee3p.<\/li>\n<\/ul>\n<\/td>\n<td><img alt=\"Composition\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2022\/02\/06-composition.png\"\/><\/td>\n<\/tr>\n<tr>\n<td><strong>Ph\u1ee5 thu\u1ed9c<\/strong>:<\/p>\n<ul>\n<li>T\u1ed3n t\u1ea1i gi\u1eefa hai l\u1edbp n\u1ebfu m\u1ed9t thay \u0111\u1ed5i trong \u0111\u1ecbnh ngh\u0129a c\u1ee7a m\u1ed9t l\u1edbp c\u00f3 th\u1ec3 g\u00e2y ra thay \u0111\u1ed5i trong l\u1edbp kia (nh\u01b0ng kh\u00f4ng ng\u01b0\u1ee3c l\u1ea1i).<\/li>\n<li>L\u1edbp1 ph\u1ee5 thu\u1ed9c v\u00e0o L\u1edbp2.<\/li>\n<li>\u0110\u01b0\u1eddng n\u00e9t \u0111\u1ee9t v\u1edbi \u0111\u1ea7u m\u0169i t\u00ean h\u1edf.<\/li>\n<\/ul>\n<\/td>\n<td><img alt=\"Dependency\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2022\/02\/07-dependency.png\"\/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<section data-magellan-target=\"relationship-names\" id=\"relationship-names\">\n<h3>T\u00ean m\u1ed1i quan h\u1ec7<\/h3>\n<div class=\"space-gap-small\"><\/div>\n<ul>\n<li>T\u00ean m\u1ed1i quan h\u1ec7 \u0111\u01b0\u1ee3c vi\u1ebft \u1edf gi\u1eefa \u0111\u01b0\u1eddng li\u00ean k\u1ebft.<\/li>\n<li>C\u00e1c t\u00ean m\u1ed1i quan h\u1ec7 t\u1ed1t l\u00e0 c\u00f3 \u00fd ngh\u0129a khi \u0111\u1ecdc to:\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>\u201cM\u1ed7i b\u1ea3ng t\u00ednh <strong>ch\u1ee9a<\/strong> m\u1ed9t s\u1ed1 \u00f4\u201d<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&lt;li&gt;Bi\u1ec3u th\u1ee9c <strong>\u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 th\u00e0nh<\/strong> m\u1ed9t gi\u00e1 tr\u1ecb\u201d<\/p>\n<\/li>\n<li>Ch\u00fang th\u01b0\u1eddng c\u00f3 m\u1ed9t <strong>m\u0169i t\u00ean nh\u1ecf ch\u1ec9 h\u01b0\u1edbng<\/strong>\u0111\u1ecdc, v\u00ed d\u1ee5: bi\u1ec3u th\u1ee9c \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 th\u00e0nh gi\u00e1 tr\u1ecb, nh\u01b0ng gi\u00e1 tr\u1ecb kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 th\u00e0nh bi\u1ec3u th\u1ee9c.<\/li>\n<\/ul>\n<div class=\"space-gap-small\"><\/div>\n<p><img alt=\"Relationship name\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2022\/02\/08-relationship-name.png\"\/><\/p>\n<\/section>\n<section data-magellan-target=\"relationship-roles\" id=\"relationship-roles\">\n<h3>M\u1ed1i quan h\u1ec7 \u2013 Vai tr\u00f2<\/h3>\n<div class=\"space-gap-small\"><\/div>\n<ul>\n<li>Vai tr\u00f2 x\u00e1c \u0111\u1ecbnh m\u1ee5c \u0111\u00edch c\u1ee7a h\u01b0\u1edbng trong m\u1ed9t m\u1ed1i quan h\u1ec7.<\/li>\n<li>Vai tr\u00f2 \u0111\u01b0\u1ee3c ghi \u1edf cu\u1ed1i \u0111\u01b0\u1eddng n\u1ed1i m\u1ed1i quan h\u1ec7 v\u00e0 m\u00f4 t\u1ea3 vai tr\u00f2 m\u00e0 m\u1ed9t l\u1edbp \u0111\u00f3ng trong m\u1ed1i quan h\u1ec7 \u0111\u00f3.\n<ul>\n<li>V\u00ed d\u1ee5, Cell li\u00ean quan \u0111\u1ebfn Expression. B\u1ea3n ch\u1ea5t c\u1ee7a m\u1ed1i quan h\u1ec7 l\u00e0 Expression l\u00e0 <strong>c\u00f4ng th\u1ee9c<\/strong>c\u1ee7a \u00f4.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/section>\n<section data-magellan-target=\"navigability\" id=\"navigability\">\n<h3>Kh\u1ea3 n\u0103ng \u0111i\u1ec1u h\u01b0\u1edbng<\/h3>\n<p>M\u0169i t\u00ean ch\u1ec9 ra r\u1eb1ng, cho m\u1ed9t th\u1ec3 hi\u1ec7n c\u1ee7a m\u1ed1i quan h\u1ec7, ch\u00fang ta c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n li\u00ean quan c\u1ee7a l\u1edbp kia hay kh\u00f4ng.<\/p>\n<p>Nh\u01b0 minh h\u1ecda trong h\u00ecnh:<\/p>\n<ul>\n<li>Cho m\u1ed9t b\u1ea3ng t\u00ednh, ch\u00fang ta c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y t\u1ea5t c\u1ea3 c\u00e1c \u00f4 m\u00e0 n\u00f3 ch\u1ee9a, nh\u01b0ng\n<ul>\n<li>Ch\u00fang ta kh\u00f4ng th\u1ec3 x\u00e1c \u0111\u1ecbnh b\u1ea3ng t\u00ednh n\u00e0o m\u00e0 m\u1ed9t \u00f4 thu\u1ed9c v\u1ec1 ch\u1ec9 t\u1eeb ch\u00ednh \u00f4 \u0111\u00f3.<\/li>\n<\/ul>\n<\/li>\n<li>Cho m\u1ed9t \u00f4, ch\u00fang ta c\u00f3 th\u1ec3 l\u1ea5y \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ee9c v\u00e0 gi\u00e1 tr\u1ecb li\u00ean quan \u0111\u1ebfn n\u00f3, nh\u01b0ng\n<ul>\n<li>Cho m\u1ed9t gi\u00e1 tr\u1ecb (ho\u1eb7c bi\u1ec3u th\u1ee9c), ch\u00fang ta kh\u00f4ng th\u1ec3 t\u00ecm \u0111\u01b0\u1ee3c c\u00e1c \u00f4 c\u00f3 nh\u1eefng thu\u1ed9c t\u00ednh \u0111\u00f3.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/section>\n<section data-magellan-target=\"class-member-visibility\" id=\"class-member-visibility\">\n<h2>T\u00ednh kh\u1ea3 ki\u1ebfn c\u1ee7a c\u00e1c th\u00e0nh vi\u00ean l\u1edbp<\/h2>\n<p>Trong thi\u1ebft k\u1ebf h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng, t\u00ednh kh\u1ea3 ki\u1ebfn c\u1ee7a c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 thao t\u00e1c \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n. UML \u0111\u1ecbnh ngh\u0129a b\u1ed1n lo\u1ea1i t\u00ednh kh\u1ea3 ki\u1ebfn: <strong>c\u00f4ng khai<\/strong>, <strong>b\u1ea3o v\u1ec7<\/strong>, <strong>ri\u00eang t\u01b0<\/strong>, v\u00e0 <strong>g\u00f3i<\/strong>.<\/p>\n<p>C\u00e1c k\u00fd hi\u1ec7u +, -, # v\u00e0 ~ \u0111\u1eb7t tr\u01b0\u1edbc t\u00ean thu\u1ed9c t\u00ednh v\u00e0 thao t\u00e1c bi\u1ec3u th\u1ecb t\u00ednh kh\u1ea3 ki\u1ebfn:<\/p>\n<ul>\n<li>+ ch\u1ec9 ra thu\u1ed9c t\u00ednh ho\u1eb7c thao t\u00e1c c\u00f4ng khai<\/li>\n<li>\u2013 ch\u1ec9 ra thu\u1ed9c t\u00ednh ho\u1eb7c thao t\u00e1c ri\u00eang t\u01b0<\/li>\n<li># ch\u1ec9 ra thu\u1ed9c t\u00ednh ho\u1eb7c thao t\u00e1c b\u1ea3o v\u1ec7<\/li>\n<li>~ ch\u1ec9 ra thu\u1ed9c t\u00ednh ho\u1eb7c thao t\u00e1c g\u00f3i<\/li>\n<\/ul>\n<\/section>\n<section data-magellan-target=\"class-visibility-example\" id=\"class-visibility-example\">\n<h3>V\u00ed d\u1ee5 v\u1ec1 t\u00ednh kh\u1ea3 ki\u1ebfn l\u1edbp<\/h3>\n<div class=\"space-gap-small\"><\/div>\n<p><img alt=\"Simple class\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2022\/02\/02-simple-class.png\"\/><\/p>\n<div class=\"space-gap-small\"><\/div>\n<p>Trong v\u00ed d\u1ee5 tr\u00ean:<\/p>\n<ul>\n<li>attribute1 v\u00e0 op1 c\u1ee7a MyClassName l\u00e0 c\u00f4ng khai<\/li>\n<li>attribute3 v\u00e0 op3 l\u00e0 b\u1ea3o v\u1ec7<\/li>\n<li>attribute2 v\u00e0 op2 l\u00e0 ri\u00eang t\u01b0<\/li>\n<\/ul>\n<p>Quy\u1ec1n truy c\u1eadp cho c\u00e1c th\u00e0nh vi\u00ean l\u1edbp kh\u00e1c nhau \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb b\u00ean d\u01b0\u1edbi:<\/p>\n<table>\n<tbody>\n<tr>\n<th>M\u1ee9c \u0111\u1ed9 truy c\u1eadp<\/th>\n<th>C\u00f4ng khai (+)<\/th>\n<th>Ri\u00eang t\u01b0 (-)<\/th>\n<th>B\u1ea3o v\u1ec7 (#)<\/th>\n<th>G\u00f3i (~)<\/th>\n<\/tr>\n<tr>\n<td>C\u00e1c th\u00e0nh vi\u00ean c\u1ee7a c\u00f9ng m\u1ed9t l\u1edbp<\/td>\n<td>C\u00f3<\/td>\n<td>C\u00f3<\/td>\n<td>C\u00f3<\/td>\n<td>C\u00f3<\/td>\n<\/tr>\n<tr>\n<td>C\u00e1c th\u00e0nh vi\u00ean c\u1ee7a c\u00e1c l\u1edbp d\u1eabn xu\u1ea5t<\/td>\n<td>C\u00f3<\/td>\n<td>Kh\u00f4ng<\/td>\n<td>C\u00f3<\/td>\n<td>C\u00f3<\/td>\n<\/tr>\n<tr>\n<td>C\u00e1c th\u00e0nh vi\u00ean c\u1ee7a b\u1ea5t k\u1ef3 l\u1edbp n\u00e0o kh\u00e1c<\/td>\n<td>C\u00f3<\/td>\n<td>Kh\u00f4ng<\/td>\n<td>Kh\u00f4ng<\/td>\n<td>Ch\u1ec9 c\u00f9ng g\u00f3i<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n<section data-magellan-target=\"multiplicity\" id=\"multiplicity\">\n<h2>\u0110a d\u1ea1ng<\/h2>\n<p>\u0110a d\u1ea1ng ch\u1ec9 ra c\u00f3 bao nhi\u00eau \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ee7a m\u1ed9t l\u1edbp tham gia v\u00e0o m\u1ed9t m\u1ed1i quan h\u1ec7. N\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n nh\u01b0 sau:<\/p>\n<ul>\n<li>\u0110\u00fang 1 \u2013 1<\/li>\n<li>Kh\u00f4ng ho\u1eb7c m\u1ed9t \u2013 0..1<\/li>\n<li>Nhi\u1ec1u \u2013 0..* ho\u1eb7c *<\/li>\n<li>M\u1ed9t ho\u1eb7c nhi\u1ec1u \u2013 1..*<\/li>\n<li>S\u1ed1 l\u01b0\u1ee3ng ch\u00ednh x\u00e1c \u2013 v\u00ed d\u1ee5: 3..4 ho\u1eb7c 6<\/li>\n<li>M\u1ed1i quan h\u1ec7 ph\u1ee9c t\u1ea1p \u2013 v\u00ed d\u1ee5: 0..1, 3..4, 6* c\u00f3 ngh\u0129a l\u00e0 b\u1ea5t k\u1ef3 s\u1ed1 l\u01b0\u1ee3ng n\u00e0o tr\u1eeb 2 ho\u1eb7c 5<\/li>\n<\/ul>\n<\/section>\n<section data-magellan-target=\"multiplicity-example\" id=\"multiplicity-example\">\n<h3>V\u00ed d\u1ee5 v\u1ec1 b\u1ed9i s\u1ed1<\/h3>\n<div class=\"space-gap-small\"><\/div>\n<ul>\n<li>Y\u00eau c\u1ea7u: M\u1ed9t sinh vi\u00ean c\u00f3 th\u1ec3 \u0111\u0103ng k\u00fd nhi\u1ec1u kh\u00f3a h\u1ecdc, v\u00e0 nhi\u1ec1u sinh vi\u00ean c\u00f3 th\u1ec3 \u0111\u0103ng k\u00fd m\u1ed9t kh\u00f3a h\u1ecdc.<\/li>\n<li>Trong v\u00ed d\u1ee5 d\u01b0\u1edbi \u0111\u00e2y, <strong>s\u01a1 \u0111\u1ed3 l\u1edbp<\/strong> (b\u00ean tr\u00e1i) m\u00f4 t\u1ea3 m\u00f4 h\u00ecnh t\u0129nh c\u1ee7a y\u00eau c\u1ea7u tr\u00ean, trong khi s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng (b\u00ean ph\u1ea3i) hi\u1ec3n th\u1ecb m\u1ed9t b\u1ee9c \u1ea3nh ch\u1ee5p nhanh v\u1ec1 \u0111\u0103ng k\u00fd kh\u00f3a h\u1ecdc (th\u1ec3 hi\u1ec7n c\u1ee7a s\u01a1 \u0111\u1ed3 l\u1edbp) cho c\u00e1c kh\u00f3a h\u1ecdc k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m v\u00e0 qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n<p><img alt=\"Object diagram\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2022\/02\/09-class-diagram-to-object-diagram.png\"\/><\/p>\n<\/section>\n<section data-magellan-target=\"aggregation-example\" id=\"aggregation-example\">\n<h2>V\u00ed d\u1ee5 v\u1ec1 t\u00edch h\u1ee3p \u2013 M\u00e1y t\u00ednh v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n<\/h2>\n<div class=\"space-gap-small\"><\/div>\n<ul>\n<li>T\u00edch h\u1ee3p l\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p \u0111\u1eb7c bi\u1ec7t c\u1ee7a m\u1ed1i quan h\u1ec7, bi\u1ec3u di\u1ec5n m\u1ed9t th\u1ee9 t\u1ef1 &#8220;ch\u1ee9a&#8221;.<\/li>\n<li>T\u00edch h\u1ee3p l\u00e0 l\u1edbp cha, th\u00e0nh ph\u1ea7n l\u00e0 l\u1edbp con.<\/li>\n<\/ul>\n<div class=\"space-gap-small\"><\/div>\n<p><img alt=\"Aggregation example\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2022\/02\/10-aggregation-example.png\"\/><\/p>\n<\/section>\n<section data-magellan-target=\"inheritance-example\" id=\"inheritance-example\">\n<h2>V\u00ed d\u1ee5 v\u1ec1 k\u1ebf th\u1eeba \u2013 Ph\u00e2n lo\u1ea1i t\u1ebf b\u00e0o<\/h2>\n<div class=\"space-gap-small\"><\/div>\n<ul>\n<li>K\u1ebf th\u1eeba l\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p \u0111\u1eb7c bi\u1ec7t kh\u00e1c c\u1ee7a m\u1ed1i quan h\u1ec7, bi\u1ec3u di\u1ec5n m\u1ed9t th\u1ee9 t\u1ef1 &#8220;lo\u1ea1i&#8221;.<\/li>\n<li>K\u1ebf th\u1eeba \u0111\u01a1n gi\u1ea3n h\u00f3a m\u00f4 h\u00ecnh ph\u00e2n t\u00edch b\u1eb1ng c\u00e1ch gi\u1edbi thi\u1ec7u ph\u00e2n lo\u1ea1i.<\/li>\n<li>C\u00e1c l\u1edbp con k\u1ebf th\u1eeba thu\u1ed9c t\u00ednh v\u00e0 thao t\u00e1c t\u1eeb l\u1edbp cha.<\/li>\n<\/ul>\n<div class=\"space-gap-small\"><\/div>\n<p><img alt=\"Inheritance example\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2022\/02\/11-inheritance-example.png\"\/><\/p>\n<\/section>\n<section data-magellan-target=\"class-diagram-diagram-tool-example\" id=\"class-diagram-diagram-tool-example\">\n<h2>S\u01a1 \u0111\u1ed3 l\u1edbp \u2013 V\u00ed d\u1ee5 v\u1ec1 c\u00f4ng c\u1ee5 s\u01a1 \u0111\u1ed3<\/h2>\n<p>S\u01a1 \u0111\u1ed3 l\u1edbp c\u00f3 th\u1ec3 bao g\u1ed3m c\u00e1c ghi ch\u00fa \u0111\u01b0\u1ee3c \u0111\u00ednh k\u00e8m v\u00e0o c\u00e1c l\u1edbp ho\u1eb7c m\u1ed1i quan h\u1ec7. C\u00e1c ghi ch\u00fa \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb b\u1eb1ng m\u00e0u x\u00e1m.<\/p>\n<div class=\"space-gap-small\"><\/div>\n<p><img alt=\"Class diagram example\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2022\/02\/12-uml-class-diagram-example.png\"\/><\/p>\n<div class=\"space-gap-small\"><\/div>\n<p>T\u1eeb v\u00ed d\u1ee5 tr\u00ean, ch\u00fang ta c\u00f3 th\u1ec3 hi\u1ec3u s\u01a1 \u0111\u1ed3 nh\u01b0 sau:<\/p>\n<ol>\n<li>Shape l\u00e0 m\u1ed9t l\u1edbp tr\u1eebu t\u01b0\u1ee3ng. N\u00f3 \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb b\u1eb1ng ch\u1eef nghi\u00eang.<\/li>\n<li>Shape l\u00e0 m\u1ed9t l\u1edbp si\u00eau. Circle, Rectangle v\u00e0 Polygon k\u1ebf th\u1eeba t\u1eeb Shape. N\u00f3i c\u00e1ch kh\u00e1c, m\u1ed9t Circle l\u00e0 m\u1ed9t Shape. \u0110\u00e2y l\u00e0 m\u1ed9t m\u1ed1i quan h\u1ec7 t\u1ed5ng qu\u00e1t h\u00f3a\/k\u1ebf th\u1eeba.<\/li>\n<li>C\u00f3 m\u1ed9t m\u1ed1i quan h\u1ec7 gi\u1eefa DialogBox v\u00e0 DataController.<\/li>\n<li>Shape l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a Window. \u0110\u00e2y l\u00e0 m\u1ed9t m\u1ed1i quan h\u1ec7 t\u00edch h\u1ee3p. Shape c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i m\u00e0 kh\u00f4ng c\u1ea7n Window.<\/li>\n<li>Point l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a Circle. \u0110\u00e2y l\u00e0 m\u1ed9t m\u1ed1i quan h\u1ec7 k\u1ebft h\u1ee3p. Point kh\u00f4ng th\u1ec3 t\u1ed3n t\u1ea1i n\u1ebfu kh\u00f4ng c\u00f3 Circle.<\/li>\n<li>Window ph\u1ee5 thu\u1ed9c v\u00e0o Event. Nh\u01b0ng Event kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o Window.<\/li>\n<li>Thu\u1ed9c t\u00ednh c\u1ee7a Circle l\u00e0 radius v\u00e0 center. N\u00f3 l\u00e0 m\u1ed9t l\u1edbp c\u1ee5 th\u1ec3.<\/li>\n<li>C\u00e1c ph\u01b0\u01a1ng th\u1ee9c c\u1ee7a Circle l\u00e0 area(), circum(), setCenter() v\u00e0 setRadius().<\/li>\n<li>Tham s\u1ed1 radius trong Circle c\u00f3 ki\u1ec3u float.<\/li>\n<li>Ph\u01b0\u01a1ng th\u1ee9c area() trong Circle tr\u1ea3 v\u1ec1 m\u1ed9t gi\u00e1 tr\u1ecb double.<\/li>\n<li>C\u00e1c thu\u1ed9c t\u00ednh v\u00e0 ph\u01b0\u01a1ng th\u1ee9c c\u1ee7a Rectangle b\u1ecb \u1ea9n. M\u1ed9t s\u1ed1 l\u1edbp kh\u00e1c trong s\u01a1 \u0111\u1ed3 c\u0169ng \u1ea9n thu\u1ed9c t\u00ednh v\u00e0 ph\u01b0\u01a1ng th\u1ee9c c\u1ee7a ch\u00fang.<\/li>\n<\/ol>\n<\/section>\n<section data-magellan-target=\"multi-or-single-class-diagram\" id=\"multi-or-single-class-diagram\">\n<h2>X\u1eed l\u00fd c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p \u2013 S\u01a1 \u0111\u1ed3 l\u1edbp nhi\u1ec1u hay s\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u01a1n?<\/h2>\n<p>Khi m\u00f4 h\u00ecnh h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng l\u1edbn ho\u1eb7c c\u00e1c l\u0129nh v\u1ef1c kinh doanh l\u1edbn, nhi\u1ec1u th\u1ef1c th\u1ec3 ph\u1ea3i \u0111\u01b0\u1ee3c xem x\u00e9t. Ch\u00fang ta n\u00ean s\u1eed d\u1ee5ng nhi\u1ec1u s\u01a1 \u0111\u1ed3 l\u1edbp hay ch\u1ec9 m\u1ed9t s\u01a1 \u0111\u1ed3 l\u1edbp? C\u00e2u tr\u1ea3 l\u1eddi l\u00e0:<\/p>\n<ul>\n<li>N\u00ean s\u1eed d\u1ee5ng nhi\u1ec1u s\u01a1 \u0111\u1ed3 l\u1edbp thay v\u00ec m\u00f4 h\u00ecnh h\u00f3a m\u1ecdi th\u1ef1c th\u1ec3 v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang tr\u00ean m\u1ed9t s\u01a1 \u0111\u1ed3 duy nh\u1ea5t.<\/li>\n<li>Vi\u1ec7c chia h\u1ec7 th\u1ed1ng th\u00e0nh nhi\u1ec1u s\u01a1 \u0111\u1ed3 l\u1edbp gi\u00fap vi\u1ec7c hi\u1ec3u h\u1ec7 th\u1ed1ng tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n, \u0111\u1eb7c bi\u1ec7t khi m\u1ed7i s\u01a1 \u0111\u1ed3 l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan c\u1ee7a m\u1ed9t ph\u1ea7n c\u1ee5 th\u1ec3 trong h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<\/section>\n<section data-magellan-target=\"class-diagram-in-sdlc\" id=\"class-diagram-in-sdlc\">\n<h2>G\u00f3c nh\u00ecn c\u1ee7a s\u01a1 \u0111\u1ed3 l\u1edbp trong v\u00f2ng \u0111\u1eddi ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m<\/h2>\n<p>S\u01a1 \u0111\u1ed3 l\u1edbp c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf c\u00e1c giai \u0111o\u1ea1n kh\u00e1c nhau c\u1ee7a<a href=\"https:\/\/en.wikipedia.org\/wiki\/Systems_development_life_cycle\" rel=\"noopener\" target=\"_blank\">V\u00f2ng \u0111\u1eddi ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m (SDLC)<\/a>, v\u00e0 th\u01b0\u1eddng ba m\u1ee9c \u0111\u1ed9 chi ti\u1ebft (g\u00f3c nh\u00ecn) kh\u00e1c nhau \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh h\u00f3a d\u1ea7n d\u1ea7n:<\/p>\n<p><strong>G\u00f3c nh\u00ecn kh\u00e1i ni\u1ec7m<\/strong>: S\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 m\u00f4 t\u1ea3 c\u00e1c th\u1ef1c th\u1ec3 trong th\u1ebf gi\u1edbi th\u1ef1c. Do \u0111\u00f3, n\u1ebfu b\u1ea1n b\u1eaft \u0111\u1ea7u t\u1eeb g\u00f3c nh\u00ecn kh\u00e1i ni\u1ec7m, b\u1ea1n s\u1ebd v\u1ebd m\u1ed9t s\u01a1 \u0111\u1ed3 bi\u1ec3u di\u1ec5n c\u00e1c kh\u00e1i ni\u1ec7m trong l\u0129nh v\u1ef1c \u0111ang \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u. Nh\u1eefng kh\u00e1i ni\u1ec7m n\u00e0y t\u1ef1 nhi\u00ean li\u00ean quan \u0111\u1ebfn c\u00e1c l\u1edbp th\u1ef1c hi\u1ec7n ch\u00fang. G\u00f3c nh\u00ecn n\u00e0y l\u00e0<strong>\u0111\u01b0\u1ee3c coi l\u00e0 kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o ng\u00f4n ng\u1eef<\/strong>.<br \/>\n<strong>G\u00f3c nh\u00ecn \u0111\u1eb7c t\u1ea3<\/strong>: S\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 m\u00f4 t\u1ea3 c\u00e1c tr\u1eebu t\u01b0\u1ee3ng ph\u1ea7n m\u1ec1m ho\u1eb7c th\u00e0nh ph\u1ea7n v\u1edbi c\u00e1c \u0111\u1eb7c t\u1ea3 v\u00e0 giao di\u1ec7n, m\u00e0 kh\u00f4ng cam k\u1ebft v\u00e0o m\u1ed9t c\u00e1ch tri\u1ec3n khai c\u1ee5 th\u1ec3. Do \u0111\u00f3, n\u1ebfu b\u1ea1n ti\u1ebfp c\u1eadn t\u1eeb g\u00f3c nh\u00ecn \u0111\u1eb7c t\u1ea3, b\u1ea1n \u0111ang<strong>nghi\u00ean c\u1ee9u c\u00e1c giao di\u1ec7n ph\u1ea7n m\u1ec1m thay v\u00ec tri\u1ec3n khai<\/strong>.<br \/>\n<strong>G\u00f3c nh\u00ecn tri\u1ec3n khai<\/strong>: S\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 m\u00f4 t\u1ea3 m\u1ed9t c\u00f4ng ngh\u1ec7 c\u1ee5 th\u1ec3 v\u00e0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Programming_language\" rel=\"noopener\" target=\"_blank\">ng\u00f4n ng\u1eef<\/a>tri\u1ec3n khai ph\u1ea7n m\u1ec1m. Do \u0111\u00f3, n\u1ebfu b\u1ea1n ti\u1ebfp c\u1eadn t\u1eeb g\u00f3c nh\u00ecn tri\u1ec3n khai, b\u1ea1n \u0111ang<strong>nghi\u00ean c\u1ee9u tri\u1ec3n khai ph\u1ea7n m\u1ec1m<\/strong>.<\/p>\n<\/section>\n<div class=\"bs-calltoaction bs-calltoaction-default1\">\n<div class=\"row\">\n<div class=\"medium-12 columns\">\n<div class=\"medium-3 small-3 columns\"><\/div>\n<div class=\"medium-9 small-9 columns cta-contents text-center\">\n<h1 class=\"cta-title1\">H\u00e3y th\u1eed v\u1ebd m\u1ed9t s\u01a1 \u0111\u1ed3 l\u1edbp UML ngay b\u00e2y gi\u1edd<\/h1>\n<div class=\"cta-desc\">B\u1ea1n \u0111\u00e3 h\u1ecdc \u0111\u01b0\u1ee3c s\u01a1 \u0111\u1ed3 l\u1edbp l\u00e0 g\u00ec v\u00e0 c\u00e1ch v\u1ebd n\u00f3. \u0110\u1ebfn l\u00fac v\u1ebd s\u01a1 \u0111\u1ed3 c\u1ee7a ri\u00eang b\u1ea1n r\u1ed3i. T\u1ea3i v\u1ec1 Visual Paradigm Community Edition, m\u1ed9t c\u00f4ng c\u1ee5 UML mi\u1ec5n ph\u00ed, v\u00e0 t\u1ea1o s\u01a1 \u0111\u1ed3 l\u1edbp c\u1ee7a b\u1ea1n b\u1eb1ng c\u00f4ng c\u1ee5 s\u01a1 \u0111\u1ed3 l\u1edbp mi\u1ec5n ph\u00ed. D\u1ec5 s\u1eed d\u1ee5ng v\u00e0 tr\u1ef1c quan.<br \/>\n<a class=\"drawnow-btn\" href=\"https:\/\/www.visual-paradigm.com\/download\/community.jsp\">T\u1ea3i v\u1ec1 mi\u1ec5n ph\u00ed<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<section data-magellan-target=\"related-links\" id=\"related-links\">\n<h2>C\u00e1c li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ol>\n<li><strong>H\u01b0\u1edbng d\u1eabn s\u01a1 \u0111\u1ed3 l\u1edbp UML<\/strong>\n<ul>\n<li>Visual Paradigm. (2022, ng\u00e0y 2 th\u00e1ng 9).<a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/uml-class-diagram-tutorial\/\">H\u01b0\u1edbng d\u1eabn s\u01a1 \u0111\u1ed3 l\u1edbp UML<\/a> <a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/uml-class-diagram-tutorial\/\" rel=\"noopener\" target=\"_blank\">52<\/a>.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Th\u1eed nghi\u1ec7m: T\u1ea1o s\u01a1 \u0111\u1ed3 l\u1edbp trong Visual Paradigm<\/strong>\n<ul>\n<li>\u0110\u1ea1i h\u1ecdc James Madison. (n.d.). <a href=\"https:\/\/w3.cs.jmu.edu\/bernstdh\/web\/common\/labs\/skills_visualparadigm_class-diagrams\/index.php\">Th\u00ed nghi\u1ec7m: T\u1ea1o s\u01a1 \u0111\u1ed3 l\u1edbp trong Visual Paradigm<\/a> <a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/w3.cs.jmu.edu\/bernstdh\/web\/common\/labs\/skills_visualparadigm_class-diagrams\/index.php\" rel=\"noopener\" target=\"_blank\">54<\/a>.<\/li>\n<\/ul>\n<\/li>\n<li><strong>H\u01b0\u1edbng d\u1eabn s\u01a1 \u0111\u1ed3 l\u1edbp | M\u00f4 h\u00ecnh h\u00f3a UML v\u1edbi Visual Paradigm<\/strong>\n<ul>\n<li>UML. (n.d.). <a href=\"https:\/\/uml.gitbook.io\/learning-uml-with-visual-paradigm\/class-diagram-tutorial\">H\u01b0\u1edbng d\u1eabn s\u01a1 \u0111\u1ed3 l\u1edbp | M\u00f4 h\u00ecnh h\u00f3a UML v\u1edbi Visual Paradigm<\/a> <a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/uml.gitbook.io\/learning-uml-with-visual-paradigm\/class-diagram-tutorial\" rel=\"noopener\" target=\"_blank\">55<\/a>.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Ph\u1ea7n m\u1ec1m s\u01a1 \u0111\u1ed3 l\u1edbp tr\u1ef1c tuy\u1ebfn<\/strong>\n<ul>\n<li>Visual Paradigm Online. (n.d.). <a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/class-diagram-software\/\">Ph\u1ea7n m\u1ec1m s\u01a1 \u0111\u1ed3 l\u1edbp tr\u1ef1c tuy\u1ebfn<\/a> <a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/class-diagram-software\/\" rel=\"noopener\" target=\"_blank\">56<\/a>.<\/li>\n<\/ul>\n<\/li>\n<li><strong>V\u1ebd s\u01a1 \u0111\u1ed3 l\u1edbp Visual Paradigm<\/strong>\n<ul>\n<li>Stack Overflow. (2013, ng\u00e0y 10 th\u00e1ng 2). <a href=\"https:\/\/stackoverflow.com\/questions\/14796695\/visual-paradigm-class-diagram-drawing\">V\u1ebd s\u01a1 \u0111\u1ed3 l\u1edbp Visual Paradigm<\/a> <a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/stackoverflow.com\/questions\/14796695\/visual-paradigm-class-diagram-drawing\" rel=\"noopener\" target=\"_blank\">57<\/a>.<\/li>\n<\/ul>\n<\/li>\n<li><strong>M\u1eabu s\u01a1 \u0111\u1ed3 l\u1edbp<\/strong>\n<ul>\n<li>Visual Paradigm Online. (n.d.). <a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/class-diagram\/\">M\u1eabu s\u01a1 \u0111\u1ed3 l\u1edbp<\/a> <a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/class-diagram\/\" rel=\"noopener\" target=\"_blank\">58<\/a>.<\/li>\n<\/ul>\n<\/li>\n<li><strong>C\u00f4ng c\u1ee5 s\u01a1 \u0111\u1ed3 l\u1edbp mi\u1ec5n ph\u00ed<\/strong>\n<ul>\n<li>Visual Paradigm Online. (2019, ng\u00e0y 6 th\u00e1ng 6). <a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/solutions\/free-class-diagram-tool\/\">C\u00f4ng c\u1ee5 s\u01a1 \u0111\u1ed3 l\u1edbp mi\u1ec5n ph\u00ed<\/a> <a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/solutions\/free-class-diagram-tool\/\" rel=\"noopener\" target=\"_blank\">59<\/a>.<\/li>\n<\/ul>\n<\/li>\n<li><strong>H\u01b0\u1edbng d\u1eabn s\u01a1 \u0111\u1ed3 l\u1edbp<\/strong>\n<ul>\n<li>Visual Paradigm Online. (2010, ng\u00e0y 11 th\u00e1ng 1). <a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/tutorials\/class-diagram-tutorial\/\">H\u01b0\u1edbng d\u1eabn s\u01a1 \u0111\u1ed3 l\u1edbp<\/a> <a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/tutorials\/class-diagram-tutorial\/\" rel=\"noopener\" target=\"_blank\">60<\/a>.<\/li>\n<\/ul>\n<\/li>\n<li><strong>S\u01a1 \u0111\u1ed3 l\u1edbp l\u00e0 g\u00ec?<\/strong>\n<ul>\n<li>Visual Paradigm. (2022, ng\u00e0y 9 th\u00e1ng 2). <a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-class-diagram\/\">S\u01a1 \u0111\u1ed3 l\u1edbp l\u00e0 g\u00ec?<\/a> <a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-class-diagram\/\" rel=\"noopener\" target=\"_blank\">61<\/a>.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<\/section>\n<\/div>\n<\/div>\n<\/div>\n<p>\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m, m\u1ed9tNg\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML)s\u01a1 \u0111\u1ed3 l\u1edbp l\u00e0 m\u1ed9ts\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac<\/p>\n","protected":false},"author":3479,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"S\u01a1 \u0111\u1ed3 l\u1edbp l\u00e0 g\u00ec? (","_yoast_wpseo_metadesc":"T\u00ecm hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 l\u1edbp UML: m\u1ee5c \u0111\u00edch, c\u1ea5u tr\u00fac, m\u1ed1i quan h\u1ec7, t\u00ednh kh\u1ea3 ki\u1ebfn, b\u1ed9i s\u1ed1 v\u00e0 \u1ee9ng d\u1ee5ng trong v\u00f2ng \u0111\u1eddi ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[127],"tags":[],"class_list":["post-10869","post","type-post","status-publish","format-standard","hentry","category-unified-modeling-language"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>S\u01a1 \u0111\u1ed3 l\u1edbp l\u00e0 g\u00ec? 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