{"id":11643,"date":"2026-01-12T10:44:58","date_gmt":"2026-01-12T02:44:58","guid":{"rendered":"https:\/\/blog.visual-paradigm.com\/vn\/step-by-step-class-diagram-tutorial-using-visual-paradigm\/"},"modified":"2026-01-12T10:45:00","modified_gmt":"2026-01-12T02:45:00","slug":"step-by-step-class-diagram-tutorial-using-visual-paradigm","status":"publish","type":"post","link":"https:\/\/blog.visual-paradigm.com\/vn\/step-by-step-class-diagram-tutorial-using-visual-paradigm\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc v\u1ec1 s\u01a1 \u0111\u1ed3 l\u1edbp s\u1eed d\u1ee5ng Visual Paradigm"},"content":{"rendered":"<h2>S\u01a1 \u0111\u1ed3 l\u1edbp l\u00e0 g\u00ec?<\/h2>\n<p>M\u1ed9t <a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-class-diagram\/\">s\u01a1 \u0111\u1ed3 l\u1edbp<\/a> l\u00e0 m\u1ed9t s\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac t\u0129nh trong UML (<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<\/a>) cho th\u1ea5y c\u00e1c l\u1edbp c\u1ee7a h\u1ec7 th\u1ed1ng, thu\u1ed9c t\u00ednh c\u1ee7a ch\u00fang, ph\u01b0\u01a1ng th\u1ee9c (ho\u1ea1t \u0111\u1ed9ng) v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a c\u00e1i nh\u00ecn t\u0129nh c\u1ee7a m\u1ed9t \u1ee9ng d\u1ee5ng.<\/p>\n<p><img alt=\"Class diagram example\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/images\/features\/uml-tool\/01-online-class-diagram-example.png\"\/><\/p>\n<h2>T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp?<\/h2>\n<ol>\n<li><strong>Bi\u1ec3u di\u1ec5n tr\u1ef1c quan:<\/strong> Cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan r\u00f5 r\u00e0ng v\u1ec1 c\u1ea5u tr\u00fac c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>Giao ti\u1ebfp:<\/strong> Gi\u00fap giao ti\u1ebfp thi\u1ebft k\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng v\u1edbi c\u00e1c b\u00ean li\u00ean quan.<\/li>\n<li><strong>B\u1ea3n thi\u1ebft k\u1ebf:<\/strong> \u0110\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t b\u1ea3n thi\u1ebft k\u1ebf cho vi\u1ec7c tri\u1ec3n khai h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>T\u00e0i li\u1ec7u:<\/strong> \u0110\u00f3ng vai tr\u00f2 nh\u01b0 t\u00e0i li\u1ec7u cho thi\u1ebft k\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<\/ol>\n<h2>Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp?<\/h2>\n<ol>\n<li><strong>Giai \u0111o\u1ea1n thi\u1ebft k\u1ebf:<\/strong> Trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf c\u1ee7a ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a c\u1ea5u tr\u00fac c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>T\u00e1i c\u1ea5u tr\u00fac:<\/strong> Khi t\u00e1i c\u1ea5u tr\u00fac c\u00e1c h\u1ec7 th\u1ed1ng hi\u1ec7n c\u00f3 \u0111\u1ec3 hi\u1ec3u v\u00e0 c\u1ea3i thi\u1ec7n thi\u1ebft k\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>T\u00e0i li\u1ec7u:<\/strong> \u0110\u1ec3 t\u00e0i li\u1ec7u h\u00f3a ki\u1ebfn tr\u00fac v\u00e0 thi\u1ebft k\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<\/ol>\n<h2>L\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t v\u1ec1 c\u00f4ng c\u1ee5 UML cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n<\/h2>\n<p>Khi n\u00f3i \u0111\u1ebfn m\u00f4 h\u00ecnh h\u00f3a UML, <a href=\"http:\/\/visual-paradigm.com\">Visual Paradigm<\/a> n\u1ed5i b\u1eadt nh\u01b0 m\u1ed9t trong nh\u1eefng l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n. \u0110\u00e2y l\u00e0 l\u00fd do:<\/p>\n<ol>\n<li><strong>B\u1ed9 c\u00f4ng c\u1ee5 to\u00e0n di\u1ec7n:<\/strong> Visual Paradigm cung c\u1ea5p m\u1ed9t lo\u1ea1t c\u00e1c c\u00f4ng c\u1ee5 v\u1ebd s\u01a1 \u0111\u1ed3, bao g\u1ed3m s\u01a1 \u0111\u1ed3 l\u1edbp, <a href=\"https:\/\/www.visual-paradigm.com\/learning\/handbooks\/software-design-handbook\/sequence-diagram.jsp\">s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1<\/a>, <a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-use-case-diagram\/\">bi\u1ec3u \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/a>, v\u00e0 nhi\u1ec1u h\u01a1n n\u1eefa. B\u1ed9 c\u00f4ng c\u1ee5 to\u00e0n di\u1ec7n n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n c\u00f3 th\u1ec3 m\u00f4 h\u00ecnh h\u00f3a m\u1ecdi kh\u00eda c\u1ea1nh c\u1ee7a h\u1ec7 th\u1ed1ng c\u1ee7a m\u00ecnh m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c.<\/li>\n<li><strong>Giao di\u1ec7n th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng:<\/strong> V\u1edbi m\u1ed9t giao di\u1ec7n tr\u1ef1c quan v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng, <a href=\"http:\/\/online.visual-paradigm.com\">Visual Paradigm<\/a> gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n d\u1ec5 d\u00e0ng t\u1ea1o v\u00e0 qu\u1ea3n l\u00fd c\u00e1c bi\u1ec3u \u0111\u1ed3 ph\u1ee9c t\u1ea1p. Ch\u1ee9c n\u0103ng k\u00e9o v\u00e0 th\u1ea3 c\u00f9ng v\u1edbi c\u00e1c t\u00f9y ch\u1ecdn b\u1ed1 tr\u00ed r\u00f5 r\u00e0ng gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a quy tr\u00ecnh thi\u1ebft k\u1ebf.<\/li>\n<li><strong>T\u00ednh n\u0103ng n\u00e2ng cao:<\/strong> Visual Paradigm bao g\u1ed3m c\u00e1c t\u00ednh n\u0103ng n\u00e2ng cao nh\u01b0 k\u1ef9 thu\u1eadt m\u00e3, ki\u1ebfn tr\u00fac h\u01b0\u1edbng m\u00f4 h\u00ecnh (MDA) v\u00e0 h\u1ed7 tr\u1ee3 ph\u00e1t tri\u1ec3n linh ho\u1ea1t. Nh\u1eefng t\u00ednh n\u0103ng n\u00e0y gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n chuy\u1ec3n \u0111\u1ed5i m\u1ed9t c\u00e1ch li\u1ec1n m\u1ea1ch t\u1eeb thi\u1ebft k\u1ebf sang tri\u1ec3n khai.<\/li>\n<li><strong>C\u00f4ng c\u1ee5 h\u1ee3p t\u00e1c:<\/strong> Visual Paradigm h\u1ed7 tr\u1ee3 h\u1ee3p t\u00e1c nh\u00f3m v\u1edbi c\u00e1c t\u00ednh n\u0103ng nh\u01b0 ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n, kh\u00e1ch h\u00e0ng l\u00e0m vi\u1ec7c nh\u00f3m v\u00e0 h\u1ee3p t\u00e1c th\u1eddi gian th\u1ef1c. \u0110i\u1ec1u n\u00e0y gi\u00fap c\u00e1c nh\u00f3m d\u1ec5 d\u00e0ng l\u00e0m vi\u1ec7c c\u00f9ng nhau tr\u00ean c\u00e1c d\u1ef1 \u00e1n l\u1edbn, \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng t\u00edch h\u1ee3p:<\/strong> Visual Paradigm t\u00edch h\u1ee3p m\u01b0\u1ee3t m\u00e0 v\u1edbi c\u00e1c m\u00f4i tr\u01b0\u1eddng ph\u00e1t tri\u1ec3n v\u00e0 c\u00f4ng c\u1ee5 ph\u1ed5 bi\u1ebfn, ch\u1eb3ng h\u1ea1n nh\u01b0 Eclipse, Visual Studio v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n kh\u00e1c nhau. S\u1ef1 t\u00edch h\u1ee3p n\u00e0y n\u00e2ng cao n\u0103ng su\u1ea5t v\u00e0 \u0111\u1ea3m b\u1ea3o quy tr\u00ecnh l\u00e0m vi\u1ec7c th\u1ed1ng nh\u1ea5t.<\/li>\n<li><strong>T\u00e0i li\u1ec7u v\u00e0 h\u1ed7 tr\u1ee3 phong ph\u00fa:<\/strong> Visual Paradigm cung c\u1ea5p t\u00e0i li\u1ec7u phong ph\u00fa, h\u01b0\u1edbng d\u1eabn v\u00e0 h\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng \u0111\u1ec3 gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n t\u1eadn d\u1ee5ng t\u1ed1i \u0111a c\u00f4ng c\u1ee5. D\u00f9 b\u1ea1n l\u00e0 ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u hay l\u00e0 ng\u01b0\u1eddi d\u00f9ng c\u00f3 kinh nghi\u1ec7m, b\u1ea1n s\u1ebd t\u00ecm th\u1ea5y c\u00e1c t\u00e0i nguy\u00ean c\u1ea7n thi\u1ebft \u0111\u1ec3 th\u00e0nh c\u00f4ng.<\/li>\n<\/ol>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/uml-tool\/\">Visual Paradigm<\/a> kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 UML; n\u00f3 l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p to\u00e0n di\u1ec7n gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n t\u1ea1o ra c\u00e1c m\u00f4 h\u00ecnh ch\u1ea5t l\u01b0\u1ee3ng cao, h\u1ee3p t\u00e1c hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u01a1n gi\u1ea3n h\u00f3a quy tr\u00ecnh ph\u00e1t tri\u1ec3n. Ch\u1ecdn <a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/uml-practical-guide\/\">Visual Paradigm cho nhu c\u1ea7u UM c\u1ee7a b\u1ea1n<\/a>v\u00e0 tr\u1ea3i nghi\u1ec7m s\u1ef1 kh\u00e1c bi\u1ec7t m\u00e0 n\u00f3 c\u00f3 th\u1ec3 mang l\u1ea1i cho c\u00e1c d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n.<\/p>\n<h2>C\u00e1ch t\u1ea1o bi\u1ec3u \u0111\u1ed3 l\u1edbp b\u1eb1ng Visual Paradigm<\/h2>\n<h3>B\u01b0\u1edbc 1: M\u1edf Visual Paradigm<\/h3>\n<ol>\n<li>Kh\u1edfi \u0111\u1ed9ng Visual Paradigm.<\/li>\n<li>T\u1ea1o m\u1ed9t d\u1ef1 \u00e1n m\u1edbi ho\u1eb7c m\u1edf m\u1ed9t d\u1ef1 \u00e1n hi\u1ec7n c\u00f3.<\/li>\n<\/ol>\n<h3>B\u01b0\u1edbc 2: T\u1ea1o m\u1ed9t bi\u1ec3u \u0111\u1ed3 l\u1edbp m\u1edbi<\/h3>\n<ol>\n<li>Trong Tr\u00ecnh duy\u1ec7t D\u1ef1 \u00e1n, nh\u1ea5p chu\u1ed9t ph\u1ea3i v\u00e0o t\u00ean d\u1ef1 \u00e1n.<\/li>\n<li>Ch\u1ecdn <code class=\"\">Bi\u1ec3u \u0111\u1ed3 m\u1edbi<\/code>\u00a0&gt;\u00a0<code class=\"\">Bi\u1ec3u \u0111\u1ed3 l\u1edbp<\/code>.<\/li>\n<li>\u0110\u1eb7t t\u00ean cho s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n (v\u00ed d\u1ee5: \u201cS\u01a1 \u0111\u1ed3 l\u1edbp H\u1ec7 th\u1ed1ng H\u1ecdc thu\u1eadt\u201d) v\u00e0 nh\u1ea5p v\u00e0o <code class=\"\">\u0110\u1ed3ng \u00fd<\/code>.<\/li>\n<\/ol>\n<h3>B\u01b0\u1edbc 3: Th\u00eam L\u1edbp<\/h3>\n<ol>\n<li>T\u1eeb Thanh c\u00f4ng c\u1ee5 S\u01a1 \u0111\u1ed3, ch\u1ecdn <code class=\"\">L\u1edbp<\/code> c\u00f4ng c\u1ee5.<\/li>\n<li>Nh\u1ea5p v\u00e0o b\u1ec1 m\u1eb7t s\u01a1 \u0111\u1ed3 \u0111\u1ec3 th\u00eam m\u1ed9t l\u1edbp m\u1edbi.<\/li>\n<li>\u0110\u1eb7t t\u00ean cho l\u1edbp (v\u00ed d\u1ee5, <code class=\"\">Ng\u01b0\u1eddi<\/code>).<\/li>\n<\/ol>\n<h3>B\u01b0\u1edbc 4: \u0110\u1ecbnh ngh\u0129a Thu\u1ed9c t\u00ednh v\u00e0 Ph\u01b0\u01a1ng th\u1ee9c<\/h3>\n<ol>\n<li>Nh\u1ea5p \u0111\u00fap v\u00e0o l\u1edbp \u0111\u1ec3 m\u1edf c\u1eeda s\u1ed5 \u0110\u1eb7c t\u1ea3.<\/li>\n<li>Trong <code class=\"\">Thu\u1ed9c t\u00ednh<\/code> tab, th\u00eam c\u00e1c thu\u1ed9c t\u00ednh (v\u00ed d\u1ee5, <code class=\"\">t\u00ean: str<\/code>,\u00a0<code class=\"\">s\u1ed1\u0110i\u1ec7nTho\u1ea1i: str<\/code>,\u00a0<code class=\"\">\u0111\u1ecbaCh\u1ec9Email: str<\/code>).<\/li>\n<li>Trong <code class=\"\">Ph\u01b0\u01a1ng th\u1ee9c<\/code> tab, th\u00eam c\u00e1c ph\u01b0\u01a1ng th\u1ee9c (v\u00ed d\u1ee5, <code class=\"\">+muaTh\u1ebb\u0110\u1ed7Xe(): void<\/code>).<\/li>\n<\/ol>\n<h3>B\u01b0\u1edbc 5: Th\u00eam Nhi\u1ec1u L\u1edbp H\u01a1n<\/h3>\n<ol>\n<li>L\u1eb7p l\u1ea1i b\u01b0\u1edbc 3 v\u00e0 4 \u0111\u1ec3 th\u00eam nhi\u1ec1u l\u1edbp h\u01a1n (v\u00ed d\u1ee5, <code class=\"\">\u0110\u1ecba ch\u1ec9<\/code>, <code class=\"\">Sinh vi\u00ean<\/code>, <code class=\"\">Gi\u00e1o s\u01b0<\/code>).<\/li>\n<li>\u0110\u1ecbnh ngh\u0129a c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 ph\u01b0\u01a1ng th\u1ee9c c\u1ee7a ch\u00fang nh\u01b0 sau:\n<ul>\n<li><strong>L\u1edbp \u0110\u1ecba ch\u1ec9:<\/strong>\n<ul>\n<li>Thu\u1ed9c t\u00ednh:\u00a0<code class=\"\">\u0111\u01b0\u1eddng: str<\/code>,\u00a0<code class=\"\">th\u00e0nh ph\u1ed1: str<\/code>,\u00a0<code class=\"\">ti\u1ec3u bang: str<\/code>,\u00a0<code class=\"\">m\u00e3 b\u01b0u \u0111i\u1ec7n: int<\/code>,\u00a0<code class=\"\">qu\u1ed1c gia: str<\/code><\/li>\n<li>Ph\u01b0\u01a1ng th\u1ee9c:\u00a0<code class=\"\">+x\u00e1c th\u1ef1c(): bool<\/code>,\u00a0<code class=\"\">+xu\u1ea5tD\u01b0\u1edbiD\u1ea1ngNh\u00e3n(): str<\/code><\/li>\n<\/ul>\n<\/li>\n<li><strong>L\u1edbp Sinh vi\u00ean:<\/strong>\n<ul>\n<li>Thu\u1ed9c t\u00ednh:\u00a0<code class=\"\">s\u1ed1 sinh vi\u00ean: int<\/code>,\u00a0<code class=\"\">\u0111i\u1ec3m trung b\u00ecnh: int<\/code><\/li>\n<li>Ph\u01b0\u01a1ng th\u1ee9c:\u00a0<code class=\"\">+c\u00f3\u0110\u1ee7\u0110i\u1ec1uKi\u1ec7n\u0110\u1ec3\u0110\u0103ngK\u00fd(str): bool<\/code>,\u00a0<code class=\"\">+l\u1ea5yS\u1ed1Bu\u1ed5iH\u1ecdc\u0110\u00e3ThamGia(): int<\/code><\/li>\n<\/ul>\n<\/li>\n<li><strong>L\u1edbp Gi\u00e1o s\u01b0:<\/strong>\n<ul>\n<li>Thu\u1ed9c t\u00ednh: <code class=\"\">l\u01b0\u01a1ng: int<\/code>,\u00a0<code class=\"\">s\u1ed1 nh\u00e2n vi\u00ean: int<\/code>,\u00a0<code class=\"\">s\u1ed1 n\u0103m ph\u1ee5c v\u1ee5: int<\/code>,\u00a0<code class=\"\">s\u1ed1 l\u1edbp h\u1ecdc: int<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h3>B\u01b0\u1edbc 6: Thi\u1ebft l\u1eadp M\u1ed1i quan h\u1ec7<\/h3>\n<ol>\n<li>T\u1eeb Thanh c\u00f4ng c\u1ee5 S\u01a1 \u0111\u1ed3, ch\u1ecdn <code class=\"\">Li\u00ean k\u1ebft<\/code> c\u00f4ng c\u1ee5.<\/li>\n<li>Nh\u1ea5p v\u00e0o l\u1edbp ngu\u1ed3n (v\u00ed d\u1ee5, <code class=\"\">Ng\u01b0\u1eddi<\/code>) v\u00e0 k\u00e9o \u0111\u1ebfn l\u1edbp m\u1ee5c ti\u00eau (v\u00ed d\u1ee5, <code class=\"\">\u0110\u1ecba ch\u1ec9<\/code>).<\/li>\n<li>\u0110\u1ecbnh ngh\u0129a t\u00ednh \u0111a d\u1ea1ng (v\u00ed d\u1ee5, 0..1 \u0111\u1ebfn 1 cho <code class=\"\">Ng\u01b0\u1eddi<\/code> s\u1ed1ng t\u1ea1i <code class=\"\">\u0110\u1ecba ch\u1ec9<\/code>).<\/li>\n<\/ol>\n<h3>B\u01b0\u1edbc 7: \u0110\u1ecbnh ngh\u0129a K\u1ebf th\u1eeba<\/h3>\n<ol>\n<li>T\u1eeb Thanh c\u00f4ng c\u1ee5 S\u01a1 \u0111\u1ed3, ch\u1ecdn <code class=\"\">T\u1ed5ng qu\u00e1t<\/code> c\u00f4ng c\u1ee5.<\/li>\n<li>Nh\u1ea5p v\u00e0o l\u1edbp con (v\u00ed d\u1ee5, <code class=\"\">Sinh vi\u00ean<\/code>) v\u00e0 k\u00e9o \u0111\u1ebfn l\u1edbp cha (v\u00ed d\u1ee5, <code class=\"\">Ng\u01b0\u1eddi<\/code>).<\/li>\n<li>L\u1eb7p l\u1ea1i cho <code class=\"\">Gi\u00e1o s\u01b0<\/code>.<\/li>\n<\/ol>\n<h3>B\u01b0\u1edbc 8: Th\u00eam \u0110\u1ed9 nhi\u1ec1u v\u00e0 Vai tr\u00f2<\/h3>\n<ol>\n<li>Nh\u1ea5p \u0111\u00fap v\u00e0o \u0111\u01b0\u1eddng li\u00ean k\u1ebft \u0111\u1ec3 m\u1edf c\u1eeda s\u1ed5 \u0110\u1eb7c t\u1ea3.<\/li>\n<li>X\u00e1c \u0111\u1ecbnh \u0111\u1ed9 nhi\u1ec1u v\u00e0 vai tr\u00f2 (v\u00ed d\u1ee5: 0..* \u0111\u1ebfn 1..5 cho <code class=\"\">Sinh vi\u00ean<\/code> gi\u00e1m s\u00e1t <code class=\"\">Gi\u00e1o s\u01b0<\/code>).<\/li>\n<\/ol>\n<h3>B\u01b0\u1edbc 9: Ho\u00e0n thi\u1ec7n S\u01a1 \u0111\u1ed3<\/h3>\n<ol>\n<li>S\u1eafp x\u1ebfp c\u00e1c l\u1edbp v\u00e0 m\u1ed1i quan h\u1ec7 cho r\u00f5 r\u00e0ng.<\/li>\n<li>L\u01b0u s\u01a1 \u0111\u1ed3.<\/li>\n<\/ol>\n<h3>B\u01b0\u1edbc 10: T\u1ea1o T\u00e0i li\u1ec7u (T\u00f9y ch\u1ecdn)<\/h3>\n<ol>\n<li>\u0110i \u0111\u1ebfn <code class=\"\">C\u00f4ng c\u1ee5<\/code>\u00a0&gt;\u00a0<code class=\"\">T\u00e0i li\u1ec7u<\/code>\u00a0&gt;\u00a0<code class=\"\">So\u1ea1n th\u1ea3o T\u00e0i li\u1ec7u<\/code>.<\/li>\n<li>Ch\u1ecdn s\u01a1 \u0111\u1ed3 v\u00e0 t\u1ea1o t\u00e0i li\u1ec7u.<\/li>\n<\/ol>\n<h2>S\u01a1 \u0111\u1ed3 V\u00ed d\u1ee5<\/h2>\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 c\u00e1ch m\u00e0 s\u01a1 \u0111\u1ed3 l\u1edbp cu\u1ed1i c\u00f9ng c\u00f3 th\u1ec3 tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o:<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.planttext.com\/api\/plantuml\/png\/NLB9QiCm4BqR_0_2fxGXfZtq4df82BcrZI7vWR4zTaHaoMWnXBR_tf7gHUr9pDEyPKRQ6GlQkawaIPfK0enX1MgZ9FjC4yOs4ZhSCcDrgFghalZXkXBr0c87NEphMgCnCxhkdQwkOB00VUEoBKXvzR1bW-9rcdmlRYDnj2CsebsqAsxlIqLPRPn64I0EgYQCI_jBK4vQlN3M0mXU4ysRbqg902fdUsVtvWrA5FucT4UfpjRLAEsSAbJJu9CN3AYXnNUQS0RNt1m5RtafyAAEKYiXLYGUcxTepzXn2TfSu8RI-mTsv5zerT1Mb9uIW00_rMHDWpVD_pnt9CbJSqOzy2hQYGnzf-RWfT74RkDRPqzv_fonpOPbT4nFicM23sWOsBdnzOjwnkNy1UV4QJ8jpwi-Zgfv_f95Kz76NUzpKXwVOuUo3f_m1m00\"\/><\/p>\n<p>\u00a0<\/p>\n<h3>K\u1ebft lu\u1eadn<\/h3>\n<p>T\u1ea1o m\u1ed9t <a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/uml-class-diagram-tutorial\/\">s\u01a1 \u0111\u1ed3 l\u1edbp<\/a> l\u00e0 m\u1ed9t b\u01b0\u1edbc c\u01a1 b\u1ea3n trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf c\u1ee7a ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, cung c\u1ea5p m\u1ed9t \u0111\u1ea1i di\u1ec7n h\u00ecnh \u1ea3nh r\u00f5 r\u00e0ng v\u1ec1 c\u1ea5u tr\u00fac c\u1ee7a h\u1ec7 th\u1ed1ng. H\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u00e3 h\u01b0\u1edbng d\u1eabn b\u1ea1n qua quy tr\u00ecnh t\u1ea1o s\u01a1 \u0111\u1ed3 l\u1edbp b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng Visual Paradigm, chi ti\u1ebft c\u00e1c b\u01b0\u1edbc t\u1eeb vi\u1ec7c m\u1edf c\u00f4ng c\u1ee5 \u0111\u1ebfn ho\u00e0n thi\u1ec7n s\u01a1 \u0111\u1ed3.<\/p>\n<p>Ch\u00fang t\u00f4i b\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch hi\u1ec3u s\u01a1 \u0111\u1ed3 l\u1edbp l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao n\u00f3 l\u1ea1i c\u1ea7n thi\u1ebft cho vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a c\u00e1i nh\u00ecn t\u0129nh c\u1ee7a m\u1ed9t \u1ee9ng d\u1ee5ng. Sau \u0111\u00f3, ch\u00fang t\u00f4i kh\u00e1m ph\u00e1 khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp, nh\u1ea5n m\u1ea1nh t\u1ea7m quan tr\u1ecdng c\u1ee7a n\u00f3 trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf, t\u00e1i c\u1ea5u tr\u00fac v\u00e0 t\u00e0i li\u1ec7u.<\/p>\n<p>H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc \u0111\u00e3 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c t\u1ea1o ra c\u00e1c l\u1edbp, x\u00e1c \u0111\u1ecbnh thu\u1ed9c t\u00ednh v\u00e0 ph\u01b0\u01a1ng th\u1ee9c c\u1ee7a ch\u00fang, thi\u1ebft l\u1eadp c\u00e1c m\u1ed1i quan h\u1ec7 v\u00e0 \u0111\u1ecbnh ngh\u0129a k\u1ebf th\u1eeba. Ch\u00fang t\u00f4i c\u0169ng \u0111\u00e3 th\u1ea3o lu\u1eadn v\u1ec1 c\u00e1ch th\u00eam t\u00ednh \u0111a d\u1ea1ng v\u00e0 vai tr\u00f2 v\u00e0o c\u00e1c m\u1ed1i quan h\u1ec7, \u0111\u1ea3m b\u1ea3o m\u1ed9t \u0111\u1ea1i di\u1ec7n to\u00e0n di\u1ec7n v\u00e0 ch\u00ednh x\u00e1c v\u1ec1 c\u1ea5u tr\u00fac c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<p>S\u01a1 \u0111\u1ed3 v\u00ed d\u1ee5 cung c\u1ea5p m\u1ed9t minh h\u1ecda th\u1ef1c ti\u1ec5n v\u1ec1 m\u1ed9t h\u1ec7 th\u1ed1ng h\u1ecdc thu\u1eadt, bao g\u1ed3m <code class=\"\">Ng\u01b0\u1eddi<\/code>, <code class=\"\">\u0110\u1ecba ch\u1ec9<\/code>, <code class=\"\">Sinh vi\u00ean<\/code>, v\u00e0 <code class=\"\">Gi\u00e1o s\u01b0<\/code> c\u00e1c l\u1edbp, c\u00f9ng v\u1edbi c\u00e1c m\u1ed1i quan h\u1ec7 c\u1ee7a ch\u00fang. V\u00ed d\u1ee5 n\u00e0y \u0111\u00e3 ch\u1ee9ng minh c\u00e1ch m\u00f4 h\u00ecnh h\u00f3a c\u00e1c th\u1ef1c th\u1ec3 trong th\u1ebf gi\u1edbi th\u1ef1c v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c c\u1ee7a ch\u00fang trong m\u1ed9t h\u1ec7 th\u1ed1ng.<\/p>\n<p>B\u1eb1ng c\u00e1ch theo d\u00f5i h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n gi\u1edd \u0111\u00e2y n\u00ean \u0111\u01b0\u1ee3c trang b\u1ecb ki\u1ebfn th\u1ee9c v\u00e0 k\u1ef9 n\u0103ng \u0111\u1ec3 t\u1ea1o ra <a href=\"https:\/\/en.wikipedia.org\/wiki\/Class_diagram#:~:text=In%20software%20engineering%2C%20a%20class,and%20the%20relationships%20among%20objects.\">s\u01a1 \u0111\u1ed3 l\u1edbp<\/a> b\u1eb1ng Visual Paradigm. Nh\u1eefng s\u01a1 \u0111\u1ed3 n\u00e0y s\u1ebd ph\u1ee5c v\u1ee5 nh\u01b0 nh\u1eefng b\u1ea3n thi\u1ebft k\u1ebf qu\u00fd gi\u00e1 cho vi\u1ec7c tri\u1ec3n khai, h\u1ed7 tr\u1ee3 trong vi\u1ec7c giao ti\u1ebfp v\u1edbi c\u00e1c b\u00ean li\u00ean quan v\u00e0 \u0111\u1ea3m b\u1ea3o m\u1ed9t thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c t\u00e0i li\u1ec7u h\u00f3a t\u1ed1t.<\/p>\n<h2>V\u00ed d\u1ee5 v\u1ec1 S\u01a1 \u0111\u1ed3 UML<\/h2>\n<p>(Ch\u1ec9nh s\u1eeda ngay l\u1eadp t\u1ee9c)<\/p>\n<ul>\n<li class=\"features-gallery-item-wrapper\">\n<div class=\"features-gallery-image\"><a class=\"\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/class-diagram-software\/\" rel=\"noopener\" target=\"_blank\" title=\"Class Diagram example: Car (Drawn with the online UML Class Diagram tool)\"><img alt=\"Class Diagram example: Car\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/images\/features\/uml-tool\/thumbnails\/02-class-diagram-example-car.png\"\/>\u00a0<i aria-hidden=\"true\" class=\"fa fa-pencil-square-o features-edit-icon\" title=\"Try Me\"><\/i><\/a><\/div>\n<div class=\"features-caption\">\n<div class=\"text\"><a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:type=ClassDiagram&amp;gallery=\/repository\/e3676c7c-2bb5-44a1-a600-4502fd09e99e.xml&amp;name=Car\" rel=\"noopener\" target=\"_blank\"><span class=\"span-text\">S\u01a1 \u0111\u1ed3 l\u1edbp<\/span>\u00a0<i aria-hidden=\"true\" class=\"fa fa-pencil-square-o features-edit-icon\" title=\"Try Me\"><\/i><\/a><\/div>\n<\/div>\n<\/li>\n<li class=\"features-gallery-item-wrapper\">\n<div class=\"features-gallery-image\"><a class=\"\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/use-case-diagram-software\/\" rel=\"noopener\" target=\"_blank\" title=\"Use Case Diagram example: ATM (Drawn with the online UML Use Case Diagram tool)\"><img alt=\"Use Case Diagram example: ATM\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/images\/features\/uml-tool\/thumbnails\/03-use-case-diagram-example-atm.png\"\/>\u00a0<i aria-hidden=\"true\" class=\"fa fa-pencil-square-o features-edit-icon\" title=\"Try Me\"><\/i><\/a><\/div>\n<div class=\"features-caption\">\n<div class=\"text\"><a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:type=UseCaseDiagram&amp;gallery=\/repository\/b92c57a8-fe64-40ed-8d29-f990c60442ba.xml&amp;name=ATM\" rel=\"noopener\" target=\"_blank\"><span class=\"span-text\">S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/span>\u00a0<i aria-hidden=\"true\" class=\"fa fa-pencil-square-o features-edit-icon\" title=\"Try Me\"><\/i><\/a><\/div>\n<\/div>\n<\/li>\n<li class=\"features-gallery-item-wrapper\">\n<div class=\"features-gallery-image\"><a class=\"\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/sequence-diagram-software\/\" rel=\"noopener\" target=\"_blank\" title=\"Use Case Diagram example: ATM (Drawn with the online UML Use Case Diagram tool)\"><img alt=\"Sequence Diagram example: MVC Stereotypes\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/images\/features\/uml-tool\/thumbnails\/04-sequence-diagram-example-mvc-stereotypes.png\"\/>\u00a0<i aria-hidden=\"true\" class=\"fa fa-pencil-square-o features-edit-icon\" title=\"Try Me\"><\/i><\/a><\/div>\n<div class=\"features-caption\">\n<div class=\"text\"><a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:type=SequenceDiagram&amp;gallery=\/repository\/0fb98a03-cfd4-4a17-8bcd-c7783e8ba735.xml&amp;name=Using%20MVC%20Stereotypes%20with%20Conditional%20Statement\" rel=\"noopener\" target=\"_blank\"><span class=\"span-text\">S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1<\/span>\u00a0<i aria-hidden=\"true\" class=\"fa fa-pencil-square-o features-edit-icon\" title=\"Try Me\"><\/i><\/a><\/div>\n<\/div>\n<\/li>\n<li class=\"features-gallery-item-wrapper\">\n<div class=\"features-gallery-image\"><a class=\"\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/activity-diagram-software\" rel=\"noopener\" target=\"_blank\" title=\"Activity Diagram example: Order processing (Drawn with the online UML Activity Diagram tool)\"><img alt=\"Activity Diagram example: Order processing\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/images\/features\/uml-tool\/thumbnails\/05-activity-diagram-example-order-processing.png\"\/>\u00a0<i aria-hidden=\"true\" class=\"fa fa-pencil-square-o features-edit-icon\" title=\"Try Me\"><\/i><\/a><\/div>\n<div class=\"features-caption\">\n<div class=\"text\"><a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:type=ActivityDiagram&amp;gallery=\/repository\/0824445e-bd3b-4889-9098-bef4503cf3ce.xml&amp;name=Order%20Processing\" rel=\"noopener\" target=\"_blank\"><span class=\"span-text\">S\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng<\/span>\u00a0<i aria-hidden=\"true\" class=\"fa fa-pencil-square-o features-edit-icon\" title=\"Try Me\"><\/i><\/a><\/div>\n<\/div>\n<\/li>\n<li class=\"features-gallery-item-wrapper\">\n<div class=\"features-gallery-image\"><a class=\"\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/deployment-diagram-software\" rel=\"noopener\" target=\"_blank\" title=\"Deployment Diagram example: Firewall and switch (Drawn with the online UML Deployment Diagram tool)\"><img alt=\"Deployment Diagram example: Firewall and switch\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/images\/features\/uml-tool\/thumbnails\/06-deployment-diagram-example.png\"\/>\u00a0<i aria-hidden=\"true\" class=\"fa fa-pencil-square-o features-edit-icon\" title=\"Try Me\"><\/i><\/a><\/div>\n<div class=\"features-caption\">\n<div class=\"text\"><a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:type=DeploymentDiagram&amp;gallery=\/repository\/e191d3d4-71bf-4b0d-a216-381918af6e0d.xml&amp;name=Switch%20and%20WebServers\" rel=\"noopener\" target=\"_blank\"><span class=\"span-text\">S\u01a1 \u0111\u1ed3 tri\u1ec3n khai<\/span>\u00a0<i aria-hidden=\"true\" class=\"fa fa-pencil-square-o features-edit-icon\" title=\"Try Me\"><\/i><\/a><\/div>\n<\/div>\n<\/li>\n<li class=\"features-gallery-item-wrapper\">\n<div class=\"features-gallery-image\"><a class=\"\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/component-diagram-software\" rel=\"noopener\" target=\"_blank\" title=\"Component Diagram example: Webstore (Drawn with the online UML Component Diagram tool)\"><img alt=\"Component Diagram example: Web store\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/images\/features\/uml-tool\/thumbnails\/07-component-diagram-example.png\"\/>\u00a0<i aria-hidden=\"true\" class=\"fa fa-pencil-square-o features-edit-icon\" title=\"Try Me\"><\/i><\/a><\/div>\n<div class=\"features-caption\">\n<div class=\"text\"><a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:type=ComponentDiagram&amp;gallery=\/repository\/f9b165b1-db3f-4f40-9786-3809a60df830.xml&amp;name=Web%20Store\" rel=\"noopener\" target=\"_blank\"><span class=\"span-text\">S\u01a1 \u0111\u1ed3 th\u00e0nh ph\u1ea7n<\/span>\u00a0<i aria-hidden=\"true\" class=\"fa fa-pencil-square-o features-edit-icon\" title=\"Try Me\"><\/i><\/a><\/div>\n<\/div>\n<\/li>\n<li class=\"features-gallery-item-wrapper\">\n<div class=\"features-gallery-image\"><a class=\"\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/state-machine-diagram-software\" rel=\"noopener\" target=\"_blank\" title=\"State Machine Diagram example: Phone (Drawn with the online UML State Machine Diagram tool)\"><img alt=\"State Machine Diagram example: Phone\" decoding=\"async\" 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