{"id":1882,"date":"2026-04-10T11:10:03","date_gmt":"2026-04-10T11:10:03","guid":{"rendered":"https:\/\/www.go-diagram.com\/vi\/10-common-mistakes-uml-package-diagrams-fixes\/"},"modified":"2026-04-10T11:10:03","modified_gmt":"2026-04-10T11:10:03","slug":"10-common-mistakes-uml-package-diagrams-fixes","status":"publish","type":"post","link":"https:\/\/www.go-diagram.com\/vi\/10-common-mistakes-uml-package-diagrams-fixes\/","title":{"rendered":"10 L\u1ed7i Th\u00f4ng D\u1ee5ng Khi T\u1ea1o S\u01a1 \u0110\u1ed3 G\u00f3i UML v\u00e0 C\u00e1ch S\u1eeda Ch\u1eefa"},"content":{"rendered":"<p>S\u01a1 \u0111\u1ed3 g\u00f3i UML \u0111\u00f3ng vai tr\u00f2 n\u1ec1n t\u1ea3ng trong t\u00e0i li\u1ec7u ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m. Ch\u00fang cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ea5p cao v\u1ec1 c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau c\u1ee7a h\u1ec7 th\u1ed1ng t\u01b0\u01a1ng t\u00e1c, t\u1ed5 ch\u1ee9c v\u00e0 ph\u1ee5 thu\u1ed9c l\u1eabn nhau. Tuy nhi\u00ean, vi\u1ec7c t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 v\u1ebd c\u00e1c h\u00ecnh h\u1ed9p v\u00e0 m\u0169i t\u00ean; n\u00f3 \u0111\u00f2i h\u1ecfi s\u1ef1 hi\u1ec3u bi\u1ebft s\u00e2u s\u1eafc v\u1ec1 t\u00ednh ph\u00e2n m\u1ea3nh, \u0111\u1ed9 li\u00ean k\u1ebft v\u00e0 \u0111\u1ed9 g\u1eafn k\u1ebft. Nhi\u1ec1u ki\u1ebfn tr\u00fac s\u01b0 v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n r\u01a1i v\u00e0o nh\u1eefng c\u00e1i b\u1eaby d\u1eabn \u0111\u1ebfn c\u00e1c s\u01a1 \u0111\u1ed3 g\u00e2y nh\u1ea7m l\u1eabn, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng v\u1ea5n \u0111\u1ec1 nghi\u00eam tr\u1ecdng trong c\u00e1c giai \u0111o\u1ea1n tri\u1ec3n khai v\u00e0 b\u1ea3o tr\u00ec.<\/p>\n<p>Khi m\u1ed9t s\u01a1 \u0111\u1ed3 g\u00f3i \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng k\u00e9m, n\u00f3 s\u1ebd kh\u00f4ng truy\u1ec1n \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u1ea5u tr\u00fac mong mu\u1ed1n. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 m\u01a1 h\u1ed3, n\u1ee3 k\u1ef9 thu\u1eadt gia t\u0103ng v\u00e0 kh\u00f3 kh\u0103n trong vi\u1ec7c m\u1edf r\u1ed9ng \u1ee9ng d\u1ee5ng. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 r\u00f5 r\u00e0ng v\u00e0 hi\u1ec7u qu\u1ea3, vi\u1ec7c nh\u1eadn di\u1ec7n c\u00e1c \u0111i\u1ec3m sai ph\u1ed5 bi\u1ebfn v\u00e0 \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p kh\u1eafc ph\u1ee5c \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh l\u00e0 r\u1ea5t quan tr\u1ecdng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00eau r\u00f5 m\u01b0\u1eddi l\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1c chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ec3 kh\u1eafc ph\u1ee5c ch\u00fang m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Hand-drawn infographic showing 10 common UML package diagram mistakes and fixes: overcomplicated hierarchy, missing dependencies, mixed concerns, inconsistent naming, visibility neglect, circular dependencies, lack of documentation, excessive granularity, import vs dependency confusion, and static\/dynamic mixing\u2014with visual solutions, best practices checklist, and benefits of clean architectural modeling\" decoding=\"async\" src=\"https:\/\/www.go-diagram.com\/wp-content\/uploads\/2026\/04\/10-uml-package-diagram-mistakes-infographic-hand-drawn.jpg\"\/><\/figure>\n<\/div>\n<h2>1. L\u00e0m ph\u1ee9c t\u1ea1p h\u00f3a c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p \ud83e\udd2f<\/h2>\n<p>M\u1ed9t trong nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 t\u1ea1o ra c\u1ea5u tr\u00fac g\u00f3i qu\u00e1 s\u00e2u ho\u1eb7c qu\u00e1 chi ti\u1ebft. C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n th\u01b0\u1eddng c\u1ea3m th\u1ea5y c\u1ea7n ph\u1ea3i \u0111\u1eb7t t\u1eebng l\u1edbp hay h\u00e0m nh\u1ecf v\u00e0o m\u1ed9t g\u00f3i ri\u00eang bi\u1ec7t. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn m\u1ed9t c\u1ea5u tr\u00fac c\u00e2y kh\u00f3 thao t\u00e1c v\u00e0 thi\u1ebfu s\u1ef1 g\u1eafn k\u1ebft logic.<\/p>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1:<\/strong>M\u1ed9t c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p v\u1edbi m\u01b0\u1eddi c\u1ea5p \u0111\u1ed9 l\u1ed3ng gh\u00e9p khi\u1ebfn vi\u1ec7c t\u00ecm ki\u1ebfm v\u1ecb tr\u00ed c\u1ee7a m\u1ed9t module c\u1ee5 th\u1ec3 tr\u1edf n\u00ean kh\u00f3 kh\u0103n.<\/li>\n<li><strong>H\u1eadu qu\u1ea3:<\/strong>C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n m\u1ea5t th\u1eddi gian t\u00ecm ki\u1ebfm t\u1ec7p tin, v\u00e0 s\u01a1 \u0111\u1ed3 tr\u1edf n\u00ean l\u1ed9n x\u1ed9n v\u00e0 kh\u00f3 \u0111\u1ecdc.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>H\u01b0\u1edbng \u0111\u1ebfn m\u1ed9t c\u1ea5u tr\u00fac ph\u1eb3ng h\u01a1n. Gom c\u00e1c ch\u1ee9c n\u0103ng li\u00ean quan v\u00e0o c\u00e1c danh m\u1ee5c r\u1ed9ng h\u01a1n. N\u1ebfu m\u1ed9t g\u00f3i ch\u1ec9 ch\u1ee9a m\u1ed9t ho\u1eb7c hai l\u1edbp, h\u00e3y c\u00e2n nh\u1eafc g\u1ed9p n\u00f3 v\u00e0o g\u00f3i cha.<\/li>\n<\/ul>\n<p>H\u00e3y ngh\u0129 v\u1ec1 c\u00e1c g\u00f3i nh\u01b0 c\u00e1c th\u01b0 m\u1ee5c tr\u00ean m\u00e1y t\u00ednh. B\u1ea1n kh\u00f4ng c\u1ea7n m\u1ed9t th\u01b0 m\u1ee5c ri\u00eang bi\u1ec7t cho t\u1eebng t\u1ec7p v\u0103n b\u1ea3n. B\u1ea1n nh\u00f3m c\u00e1c t\u00e0i li\u1ec7u theo d\u1ef1 \u00e1n, r\u1ed3i theo ti\u1ec3u d\u1ef1 \u00e1n, v\u00e0 c\u1ee9 th\u1ebf. Gi\u1eef \u0111\u1ed9 s\u00e2u t\u1ed1i \u0111a \u1edf ba ho\u1eb7c b\u1ed1n c\u1ea5p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng \u0111\u1ecdc t\u1ed1t nh\u1ea5t.<\/p>\n<h2>2. B\u1ecf qua c\u00e1c m\u1ed1i quan h\u1ec7 ph\u1ee5 thu\u1ed9c gi\u1eefa c\u00e1c g\u00f3i \u26d3\ufe0f<\/h2>\n<p>M\u1ed9t s\u01a1 \u0111\u1ed3 g\u00f3i kh\u00f4ng c\u00f3 c\u00e1c m\u0169i t\u00ean ph\u1ee5 thu\u1ed9c l\u00e0 ch\u01b0a ho\u00e0n ch\u1ec9nh. C\u00e1c m\u1ed1i quan h\u1ec7 ph\u1ee5 thu\u1ed9c cho th\u1ea5y c\u00e1ch c\u00e1c module t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau. Vi\u1ec7c b\u1ecf qua ch\u00fang s\u1ebd che gi\u1ea5u c\u00e1c m\u1ed1i quan h\u1ec7 quan tr\u1ecdng v\u00e0 c\u00e1c r\u1ee7i ro ti\u1ec1m \u1ea9n trong h\u1ec7 th\u1ed1ng.<\/p>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1:<\/strong>C\u00e1c b\u00ean li\u00ean quan kh\u00f4ng th\u1ec3 th\u1ea5y ph\u1ea7n n\u00e0o c\u1ee7a h\u1ec7 th\u1ed1ng ph\u1ee5 thu\u1ed9c v\u00e0o th\u01b0 vi\u1ec7n b\u00ean ngo\u00e0i hay c\u00e1c module n\u1ed9i b\u1ed9.<\/li>\n<li><strong>H\u1eadu qu\u1ea3:<\/strong>S\u1ef1 thay \u0111\u1ed5i trong m\u1ed9t module c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng c\u00e1c module kh\u00e1c m\u00e0 kh\u00f4ng c\u00f3 c\u1ea3nh b\u00e1o, d\u1eabn \u0111\u1ebfn m\u00e3 ngu\u1ed3n d\u1ec5 g\u00e3y v\u1ee1.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>V\u1ebd r\u00f5 r\u00e0ng c\u00e1c m\u0169i t\u00ean ph\u1ee5 thu\u1ed9c. S\u1eed d\u1ee5ng k\u00fd hi\u1ec7u chu\u1ea9n nh\u01b0 \u0111\u01b0\u1eddng n\u00e9t \u0111\u1ee9t v\u1edbi m\u0169i t\u00ean m\u1edf. Ghi ch\u00fa r\u00f5 lo\u1ea1i ph\u1ee5 thu\u1ed9c n\u1ebfu c\u1ea7n thi\u1ebft (v\u00ed d\u1ee5: \u00abs\u1eed d\u1ee5ng\u00bb, \u00abnh\u1eadp v\u00e0o\u00bb, \u00abph\u1ee5 thu\u1ed9c v\u00e0o\u00bb).<\/li>\n<\/ul>\n<p>\u0110\u1ea3m b\u1ea3o h\u01b0\u1edbng m\u0169i t\u00ean \u0111i t\u1eeb g\u00f3i ph\u1ee5 thu\u1ed9c \u0111\u1ebfn g\u00f3i \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. D\u1ea5u hi\u1ec7u tr\u1ef1c quan n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 hi\u1ec3u lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n.<\/p>\n<h2>3. Tr\u1ed9n l\u1eabn c\u00e1c v\u1ea5n \u0111\u1ec1 trong m\u1ed9t g\u00f3i duy nh\u1ea5t \ud83d\udd04<\/h2>\n<p>L\u1ed7i n\u00e0y x\u1ea3y ra khi m\u1ed9t g\u00f3i ch\u1ee9a c\u00e1c th\u00e0nh ph\u1ea7n thu\u1ed9c c\u00e1c l\u1edbp ki\u1ebfn tr\u00fac kh\u00e1c nhau. V\u00ed d\u1ee5, \u0111\u1eb7t m\u00e3 logic giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng, logic kinh doanh v\u00e0 truy c\u1eadp c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0o c\u00f9ng m\u1ed9t g\u00f3i vi ph\u1ea1m nguy\u00ean t\u1eafc t\u00e1ch bi\u1ec7t c\u00e1c v\u1ea5n \u0111\u1ec1.<\/p>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1:<\/strong>G\u00f3i tr\u1edf th\u00e0nh m\u1ed9t &#8216;g\u00f3i th\u1ea7n&#8217; ch\u1ee9a qu\u00e1 nhi\u1ec1u tr\u00e1ch nhi\u1ec7m.<\/li>\n<li><strong>H\u1eadu qu\u1ea3:<\/strong>Vi\u1ec7c t\u00e1i c\u1ea5u tr\u00fac tr\u1edf n\u00ean kh\u00f3 kh\u0103n v\u00ec thay \u0111\u1ed5i trong giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 v\u00f4 t\u00ecnh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn logic c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>S\u1eafp x\u1ebfp c\u00e1c g\u00f3i theo l\u1edbp ki\u1ebfn tr\u00fac. T\u1ea1o c\u00e1c g\u00f3i ri\u00eang bi\u1ec7t cho Presentation (Tr\u00ecnh b\u00e0y), Domain (L\u0129nh v\u1ef1c) v\u00e0 Infrastructure (H\u1ea1 t\u1ea7ng). \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed9t thay \u0111\u1ed5i \u1edf m\u1ed9t l\u1edbp s\u1ebd kh\u00f4ng lan truy\u1ec1n b\u1ea5t ng\u1edd sang l\u1edbp kh\u00e1c.<\/li>\n<\/ul>\n<h2>4. Quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean kh\u00f4ng nh\u1ea5t qu\u00e1n \ud83d\udcdd<\/h2>\n<p>Vi\u1ec7c \u0111\u1eb7t t\u00ean c\u00e1c g\u00f3i m\u1ed9t c\u00e1ch kh\u00f4ng nh\u1ea5t qu\u00e1n s\u1ebd g\u00e2y nh\u1ea7m l\u1eabn. M\u1ed9t s\u1ed1 g\u00f3i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean b\u1eb1ng ch\u1eef in hoa, s\u1ed1 kh\u00e1c b\u1eb1ng ch\u1eef th\u01b0\u1eddng, v\u00e0 m\u1ed9t s\u1ed1 c\u00f3 th\u1ec3 d\u00f9ng d\u1ea5u g\u1ea1ch d\u01b0\u1edbi trong khi nh\u1eefng g\u00f3i kh\u00e1c l\u1ea1i d\u00f9ng d\u1ea5u g\u1ea1ch ngang.<\/p>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1:<\/strong>M\u1ed9t nh\u00e0 ph\u00e1t tri\u1ec3n \u0111ang t\u00ecm ki\u1ebfm g\u00f3i \u201cUserManager\u201d c\u00f3 th\u1ec3 s\u1ebd kh\u00f4ng t\u00ecm th\u1ea5y \u201cuserManager\u201d trong danh s\u00e1ch.<\/li>\n<li><strong>H\u1eadu qu\u1ea3:<\/strong>N\u00f3 l\u00e0m t\u0103ng g\u00e1nh n\u1eb7ng nh\u1eadn th\u1ee9c v\u00e0 kh\u1ea3 n\u0103ng t\u1ea1o ra c\u00e1c g\u00f3i tr\u00f9ng l\u1eb7p.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>Thi\u1ebft l\u1eadp m\u1ed9t ti\u00eau chu\u1ea9n \u0111\u1eb7t t\u00ean nghi\u00eam ng\u1eb7t cho nh\u00f3m. S\u1eed d\u1ee5ng ch\u1eef th\u01b0\u1eddng c\u00f3 d\u1ea5u g\u1ea1ch d\u01b0\u1edbi cho c\u1ea5u tr\u00fac th\u01b0 m\u1ee5c, ho\u1eb7c PascalCase cho c\u00e1c g\u00f3i logic. Tu\u00e2n th\u1ee7 quy t\u1eafc n\u00e0y tr\u00ean to\u00e0n b\u1ed9 d\u1ef1 \u00e1n.<\/li>\n<\/ul>\n<table>\n<caption><strong>C\u00e1c quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb<\/strong><\/caption>\n<thead>\n<tr>\n<th>C\u00e1ch ti\u1ebfp c\u1eadn<\/th>\n<th>V\u00ed d\u1ee5<\/th>\n<th>L\u1ee3i th\u1ebf<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>snake_case<\/td>\n<td>user_management<\/td>\n<td>T\u01b0\u01a1ng th\u00edch v\u1edbi h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng t\u1ec7p tin c\u1ee7a h\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/td>\n<\/tr>\n<tr>\n<td>camelCase<\/td>\n<td>userManagement<\/td>\n<td>Ti\u00eau chu\u1ea9n trong nhi\u1ec1u ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh<\/td>\n<\/tr>\n<tr>\n<td>PascalCase<\/td>\n<td>UserManagement<\/td>\n<td>Ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng cho t\u00ean g\u00f3i<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>5. B\u1ecf qua c\u00e1c quy t\u1eafc hi\u1ec3n th\u1ecb \ud83d\udeab<\/h2>\n<p>M\u1eb7c d\u00f9 s\u01a1 \u0111\u1ed3 g\u00f3i l\u00e0 \u1edf c\u1ea5p \u0111\u1ed9 cao, ch\u00fang v\u1eabn c\u1ea7n tu\u00e2n th\u1ee7 c\u00e1c b\u1ed9 ph\u1eadn hi\u1ec3n th\u1ecb. B\u1ecf qua c\u00e1c quy t\u1eafc truy c\u1eadp c\u00f4ng khai, ri\u00eang t\u01b0 v\u00e0 \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn hi\u1ec3u l\u1ea7m v\u1ec1 nh\u1eefng g\u00ec th\u1ef1c s\u1ef1 c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c.<\/p>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1:<\/strong>M\u1ed9t g\u00f3i d\u01b0\u1eddng nh\u01b0 c\u00f3 th\u1ec3 truy c\u1eadp t\u1eeb b\u1ea5t k\u1ef3 \u0111\u00e2u, nh\u01b0ng tr\u00ean th\u1ef1c t\u1ebf l\u1ea1i b\u1ecb gi\u1edbi h\u1ea1n.<\/li>\n<li><strong>H\u1eadu qu\u1ea3:<\/strong>C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u00f3 th\u1ec3 c\u1ed1 g\u1eafng truy c\u1eadp c\u00e1c l\u1edbp n\u1ed9i b\u1ed9 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u1ea9n \u0111i, d\u1eabn \u0111\u1ebfn l\u1ed7i bi\u00ean d\u1ecbch.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>S\u1eed d\u1ee5ng c\u00e1c ki\u1ec3u d\u00e1ng ho\u1eb7c ch\u00fa th\u00edch \u0111\u1ec3 \u0111\u00e1nh d\u1ea5u m\u1ee9c \u0111\u1ed9 hi\u1ec3n th\u1ecb. Ghi r\u00f5 c\u00e1c g\u00f3i \u0111\u01b0\u1ee3c c\u00f4ng khai th\u00f4ng qua giao di\u1ec7n c\u00f4ng khai so v\u1edbi nh\u1eefng g\u00f3i l\u00e0 chi ti\u1ebft tri\u1ec3n khai n\u1ed9i b\u1ed9.<\/li>\n<\/ul>\n<p>H\u00e3y nh\u1edb r\u1eb1ng m\u1ee9c \u0111\u1ed9 hi\u1ec3n th\u1ecb c\u1ee7a g\u00f3i th\u01b0\u1eddng x\u00e1c \u0111\u1ecbnh c\u00e1ch c\u00e1c module c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c nh\u1eadp v\u00e0o ho\u1eb7c tham chi\u1ebfu b\u1edfi c\u00e1c ph\u1ea7n kh\u00e1c trong h\u1ec7 th\u1ed1ng. S\u1ef1 r\u00f5 r\u00e0ng \u1edf \u0111\u00e2y gi\u00fap ng\u0103n ch\u1eb7n s\u1ef1 ph\u1ee5 thu\u1ed9c ch\u1eb7t ch\u1ebd.<\/p>\n<h2>6. T\u1ea1o ra c\u00e1c ph\u1ee5 thu\u1ed9c v\u00f2ng l\u1eb7p \ud83d\udd01<\/h2>\n<p>C\u00e1c ph\u1ee5 thu\u1ed9c v\u00f2ng tr\u00f2n x\u1ea3y ra khi G\u00f3i A ph\u1ee5 thu\u1ed9c v\u00e0o G\u00f3i B, v\u00e0 G\u00f3i B ph\u1ee5 thu\u1ed9c v\u00e0o G\u00f3i A. \u0110\u00e2y l\u00e0 m\u1ed9t khi\u1ebfm khuy\u1ebft c\u1ea5u tr\u00fac nghi\u00eam tr\u1ecdng.<\/p>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1:<\/strong> H\u1ec7 th\u1ed1ng kh\u00f4ng th\u1ec3 kh\u1edfi t\u1ea1o \u0111\u00fang c\u00e1ch, v\u00e0 c\u00e1c m\u00f4-\u0111un kh\u00f4ng th\u1ec3 bi\u00ean d\u1ecbch \u0111\u1ed9c l\u1eadp.<\/li>\n<li><strong>H\u1eadu qu\u1ea3:<\/strong>N\u00f3 t\u1ea1o ra t\u00ecnh tr\u1ea1ng m\u00e3 ngu\u1ed3n &#8216;m\u00ec \u0103n li\u1ec1n&#8217; g\u1ea7n nh\u01b0 kh\u00f4ng th\u1ec3 t\u00e1i c\u1ea5u tr\u00fac ho\u1eb7c ki\u1ec3m th\u1eed \u0111\u1ed9c l\u1eadp.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>X\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 c\u1ee7a chu k\u1ef3. Gi\u1edbi thi\u1ec7u m\u1ed9t giao di\u1ec7n ho\u1eb7c m\u1ed9t g\u00f3i tr\u1eebu t\u01b0\u1ee3ng chung m\u00e0 c\u1ea3 hai \u0111\u1ec1u ph\u1ee5 thu\u1ed9c v\u00e0o, thay v\u00ec ph\u1ee5 thu\u1ed9c tr\u1ef1c ti\u1ebfp v\u00e0o nhau. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Nguy\u00ean t\u1eafc \u0110\u1ea3o ng\u01b0\u1ee3c Ph\u1ee5 thu\u1ed9c.<\/li>\n<\/ul>\n<p>Lu\u00f4n xem x\u00e9t l\u1ea1i \u0111\u1ed3 th\u1ecb ph\u1ee5 thu\u1ed9c \u0111\u1ec3 t\u00ecm chu k\u1ef3. N\u1ebfu t\u1ed3n t\u1ea1i chu k\u1ef3, h\u00e3y ph\u00e1 v\u1ee1 n\u00f3 b\u1eb1ng c\u00e1ch di chuy\u1ec3n logic chung sang m\u1ed9t g\u00f3i th\u1ee9 ba ho\u1eb7c t\u00e1i c\u1ea5u tr\u00fac \u0111\u1ecbnh ngh\u0129a giao di\u1ec7n.<\/p>\n<h2>7. Thi\u1ebfu t\u00e0i li\u1ec7u v\u00e0 ch\u00fa th\u00edch \ud83d\udcc4<\/h2>\n<p>M\u1ed9t s\u01a1 \u0111\u1ed3 kh\u00f4ng c\u00f3 ch\u00fa th\u00edch gi\u1ed1ng nh\u01b0 b\u1ea3n \u0111\u1ed3 kh\u00f4ng c\u00f3 ch\u00fa gi\u1ea3i. N\u1ebfu m\u1ed9t g\u00f3i c\u00f3 m\u1ee5c \u0111\u00edch ph\u1ee9c t\u1ea1p, n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch r\u00f5 r\u00e0ng.<\/p>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1:<\/strong>C\u00e1c th\u00e0nh vi\u00ean m\u1edbi trong \u0111\u1ed9i kh\u00f4ng th\u1ec3 hi\u1ec3u l\u00fd do t\u1ea1i sao m\u1ed9t g\u00f3i t\u1ed3n t\u1ea1i hay n\u00f3 l\u00e0m g\u00ec.<\/li>\n<li><strong>H\u1eadu qu\u1ea3:<\/strong>C\u00e1c m\u1ea3ng ki\u1ebfn th\u1ee9c c\u00f4 l\u1eadp h\u00ecnh th\u00e0nh, v\u00e0 ch\u1ec9 ng\u01b0\u1eddi s\u00e1ng t\u1ea1o ban \u0111\u1ea7u hi\u1ec3u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>Th\u00eam ghi ch\u00fa v\u00e0 m\u00f4 t\u1ea3 v\u00e0o c\u00e1c g\u00f3i. S\u1eed d\u1ee5ng bi\u1ec3u t\u01b0\u1ee3ng &#8220;ghi ch\u00fa&#8221; trong s\u01a1 \u0111\u1ed3 \u0111\u1ec3 gi\u1ea3i th\u00edch c\u00e1c quy t\u1eafc kinh doanh ho\u1eb7c r\u00e0ng bu\u1ed9c li\u00ean quan \u0111\u1ebfn m\u00f4-\u0111un \u0111\u00f3.<\/li>\n<\/ul>\n<p>T\u00e0i li\u1ec7u kh\u00f4ng n\u00ean gi\u1edbi h\u1ea1n \u1edf c\u00e1c ch\u00fa th\u00edch m\u00e3 ngu\u1ed3n; ch\u00ednh m\u00f4 h\u00ecnh ki\u1ebfn tr\u00fac ph\u1ea3i t\u1ef1 gi\u1ea3i th\u00edch \u0111\u01b0\u1ee3c. S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 tr\u1ee3 gi\u00fap ho\u1eb7c ghi ch\u00fa \u0111\u00ednh k\u00e8m \u0111\u1ec3 l\u00e0m r\u00f5 m\u1ee5c \u0111\u00edch.<\/p>\n<h2>8. T\u1ea1o qu\u00e1 nhi\u1ec1u g\u00f3i (\u0111\u1ed9 chi ti\u1ebft) \ud83d\udce6<\/h2>\n<p>Ng\u01b0\u1ee3c l\u1ea1i v\u1edbi vi\u1ec7c l\u00e0m ph\u1ee9c t\u1ea1p h\u00f3a c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p, m\u1ed9t s\u1ed1 \u0111\u1ed9i t\u1ea1o qu\u00e1 nhi\u1ec1u g\u00f3i v\u1edbi n\u1ed9i dung r\u1ea5t \u00edt. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng l\u00e0 ph\u1ea3n \u1ee9ng khi c\u1ed1 g\u1eafng tr\u00e1nh v\u1ea5n \u0111\u1ec1 &#8220;g\u00f3i th\u1ea7n&#8221;.<\/p>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1:<\/strong>M\u1ed9t d\u1ef1 \u00e1n c\u00f3 n\u0103m m\u01b0\u01a1i g\u00f3i, m\u1ed7i g\u00f3i ch\u1ee9a hai l\u1edbp, kh\u00f3 qu\u1ea3n l\u00fd h\u01a1n so v\u1edbi m\u1ed9t d\u1ef1 \u00e1n c\u00f3 m\u01b0\u1eddi g\u00f3i, m\u1ed7i g\u00f3i ch\u1ee9a hai m\u01b0\u01a1i l\u1edbp.<\/li>\n<li><strong>H\u1eadu qu\u1ea3:<\/strong>Chi ph\u00ed qu\u1ea3n l\u00fd vi\u1ec7c nh\u1eadp v\u00e0 tham chi\u1ebfu v\u01b0\u1ee3t qu\u00e1 l\u1ee3i \u00edch c\u1ee7a vi\u1ec7c t\u00e1ch bi\u1ec7t.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>Xem x\u00e9t \u0111\u1ed9 g\u1eafn k\u1ebft c\u1ee7a t\u1eebng g\u00f3i. N\u1ebfu m\u1ed9t g\u00f3i qu\u00e1 nh\u1ecf, h\u00e3y g\u1ed9p n\u00f3 v\u1edbi g\u00f3i k\u1ec1 b\u00ean. M\u1ed9t nguy\u00ean t\u1eafc t\u1ed1t l\u00e0 m\u1ed9t g\u00f3i n\u00ean \u0111\u1ea1i di\u1ec7n cho m\u1ed9t m\u00f4-\u0111un logic, ch\u1ee9 kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t t\u1eadp tin.<\/li>\n<\/ul>\n<p>C\u00e2n b\u1eb1ng l\u00e0 ch\u00eca kh\u00f3a. \u0110\u1ed9 chi ti\u1ebft c\u1ea7n ph\u00f9 h\u1ee3p v\u1edbi quy m\u00f4 d\u1ef1 \u00e1n. C\u00e1c \u0111o\u1ea1n m\u00e3 nh\u1ecf kh\u00f4ng c\u1ea7n c\u1ea5u tr\u00fac g\u00f3i gi\u1ed1ng nh\u01b0 c\u00e1c \u1ee9ng d\u1ee5ng doanh nghi\u1ec7p.<\/p>\n<h2>9. S\u1eed d\u1ee5ng sai kh\u00e1i ni\u1ec7m Nh\u1eadp v\u00e0o so v\u1edbi Ph\u1ee5 thu\u1ed9c \ud83d\udd17<\/h2>\n<p>C\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa vi\u1ec7c nh\u1eadp m\u1ed9t g\u00f3i v\u00e0 ph\u1ee5 thu\u1ed9c v\u00e0o n\u00f3. Nh\u1eadp th\u01b0\u1eddng c\u00f3 ngh\u0129a l\u00e0 s\u1eed d\u1ee5ng m\u1ed9t \u0111\u1ecbnh ngh\u0129a, trong khi ph\u1ee5 thu\u1ed9c ng\u1ee5 \u00fd s\u1eed d\u1ee5ng m\u1ed9t tri\u1ec3n khai.<\/p>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1:<\/strong>S\u1ef1 nh\u1ea7m l\u1eabn gi\u1eefa hai m\u1ed1i quan h\u1ec7 n\u00e0y d\u1eabn \u0111\u1ebfn vi\u1ec7c qu\u1ea3n l\u00fd ph\u1ee5 thu\u1ed9c sai l\u1ec7ch.<\/li>\n<li><strong>T\u00e1c \u0111\u1ed9ng:<\/strong>C\u00e1c h\u1ec7 th\u1ed1ng x\u00e2y d\u1ef1ng c\u00f3 th\u1ec3 th\u1ea5t b\u1ea1i, ho\u1eb7c l\u1ed7i th\u1eddi gian ch\u1ea1y c\u00f3 th\u1ec3 x\u1ea3y ra do thi\u1ebfu \u0111\u1ecbnh ngh\u0129a l\u1edbp.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>S\u1eed d\u1ee5ng k\u00fd hi\u1ec7u UML \u0111\u00fang. S\u1eed d\u1ee5ng \u0111\u01b0\u1eddng n\u00e9t \u0111\u1ee9t v\u1edbi m\u0169i t\u00ean m\u1edf \u0111\u1ec3 bi\u1ec3u di\u1ec5n m\u1ed1i quan h\u1ec7 ph\u1ee5 thu\u1ed9c. S\u1eed d\u1ee5ng ki\u1ec3u \u0111\u1eb7c tr\u01b0ng \u00abimport\u00bb n\u1ebfu b\u1ea1n \u0111ang nh\u1eadp m\u1ed9t kh\u00f4ng gian t\u00ean ho\u1eb7c \u0111\u1ecbnh ngh\u0129a g\u00f3i c\u1ee5 th\u1ec3. H\u00e3y ch\u00ednh x\u00e1c trong m\u00f4 h\u00ecnh h\u00f3a c\u1ee7a b\u1ea1n.<\/li>\n<\/ul>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c s\u1ef1 kh\u00e1c bi\u1ec7t tinh t\u1ebf n\u00e0y gi\u00fap thi\u1ebft l\u1eadp c\u1ea5u h\u00ecnh x\u00e2y d\u1ef1ng m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c. N\u00f3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u1ec9 c\u00e1c th\u00e0nh ph\u1ea7n c\u1ea7n thi\u1ebft m\u1edbi \u0111\u01b0\u1ee3c bi\u00ean d\u1ecbch v\u00e0 li\u00ean k\u1ebft.<\/p>\n<h2>10. Nh\u1ea7m l\u1eabn c\u1ea5u tr\u00fac t\u0129nh v\u1edbi h\u00e0nh vi \u0111\u1ed9ng \ud83c\udfc3<\/h2>\n<p>S\u01a1 \u0111\u1ed3 g\u00f3i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 th\u1ec3 hi\u1ec7n c\u1ea5u tr\u00fac t\u0129nh. \u0110\u00f4i khi, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u1ed1 g\u1eafng th\u1ec3 hi\u1ec7n tr\u00ecnh t\u1ef1 s\u1ef1 ki\u1ec7n ho\u1eb7c th\u1eddi gian, \u0111i\u1ec1u n\u00e0y thu\u1ed9c v\u1ec1 s\u01a1 \u0111\u1ed3 th\u1ee9 t\u1ef1 ho\u1eb7c s\u01a1 \u0111\u1ed3 ho\u1ea1t \u0111\u1ed9ng.<\/p>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1:<\/strong>S\u01a1 \u0111\u1ed3 g\u00f3i tr\u1edf n\u00ean r\u1ed1i r\u1eafm v\u1edbi c\u00e1c m\u0169i t\u00ean lu\u1ed3ng v\u00e0 nh\u00e3n th\u1eddi gian.<\/li>\n<li><strong>T\u00e1c \u0111\u1ed9ng:<\/strong>Tr\u1edf n\u00ean kh\u00f4ng r\u00f5 r\u00e0ng v\u1ec1 ki\u1ebfn tr\u00fac tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o so v\u1edbi c\u00e1ch n\u00f3 ho\u1ea1t \u0111\u1ed9ng.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>Gi\u1eef s\u01a1 \u0111\u1ed3 g\u00f3i t\u1eadp trung v\u00e0o t\u1ed5 ch\u1ee9c. S\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i s\u01a1 \u0111\u1ed3 kh\u00e1c \u0111\u1ec3 minh h\u1ecda lu\u1ed3ng. N\u1ebfu b\u1ea1n c\u1ea7n th\u1ec3 hi\u1ec7n t\u01b0\u01a1ng t\u00e1c, h\u00e3y s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 th\u00e0nh ph\u1ea7n ho\u1eb7c s\u01a1 \u0111\u1ed3 th\u1ee9 t\u1ef1 c\u00f9ng v\u1edbi s\u01a1 \u0111\u1ed3 g\u00f3i.<\/li>\n<\/ul>\n<p>Tu\u00e2n th\u1ee7 m\u1ee5c \u0111\u00edch c\u1ee7a s\u01a1 \u0111\u1ed3. S\u01a1 \u0111\u1ed3 g\u00f3i tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi \u201cN\u00f3 \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c nh\u01b0 th\u1ebf n\u00e0o?\u201d, ch\u1ee9 kh\u00f4ng ph\u1ea3i \u201cN\u00f3 ho\u1ea1t \u0111\u1ed9ng th\u1ebf n\u00e0o?\u201d.<\/p>\n<h2>T\u00f3m t\u1eaft c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u2705<\/h2>\n<p>\u0110\u1ec3 t\u00f3m t\u1eaft c\u00e1c \u0111i\u1ec1u ch\u1ec9nh cho nh\u1eefng sai l\u1ea7m \u0111\u01b0\u1ee3c n\u00eau \u1edf tr\u00ean, d\u01b0\u1edbi \u0111\u00e2y l\u00e0 danh s\u00e1ch ki\u1ec3m tra c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t c\u1ea7n tu\u00e2n theo trong qu\u00e1 tr\u00ecnh m\u00f4 h\u00ecnh h\u00f3a.<\/p>\n<ul>\n<li><strong>Gi\u1eef \u0111\u01a1n gi\u1ea3n:<\/strong>Tr\u00e1nh l\u1ed3ng gh\u00e9p s\u00e2u. Ba c\u1ea5p th\u01b0\u1eddng l\u00e0 \u0111\u1ee7.<\/li>\n<li><strong>X\u00e1c \u0111\u1ecbnh m\u1ed1i quan h\u1ec7:<\/strong>Lu\u00f4n hi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng c\u00e1c m\u1ed1i quan h\u1ec7 ph\u1ee5 thu\u1ed9c.<\/li>\n<li><strong>T\u00e1ch bi\u1ec7t c\u00e1c v\u1ea5n \u0111\u1ec1:<\/strong>Gi\u1eef UI, Logic v\u00e0 D\u1eef li\u1ec7u ri\u00eang bi\u1ec7t.<\/li>\n<li><strong>Ti\u00eau chu\u1ea9n h\u00f3a t\u00ean g\u1ecdi:<\/strong>S\u1eed d\u1ee5ng quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean nh\u1ea5t qu\u00e1n.<\/li>\n<li><strong>T\u00f4n tr\u1ecdng t\u00ednh kh\u1ea3 d\u1ee5ng:<\/strong>Ghi ch\u00fa truy c\u1eadp c\u00f4ng khai v\u00e0 ri\u00eang t\u01b0.<\/li>\n<li><strong>Tr\u00e1nh v\u00f2ng l\u1eb7p:<\/strong>Ngay l\u1eadp t\u1ee9c ph\u00e1 v\u1ee1 c\u00e1c m\u1ed1i quan h\u1ec7 ph\u1ee5 thu\u1ed9c v\u00f2ng tr\u00f2n.<\/li>\n<li><strong>T\u00e0i li\u1ec7u h\u00f3a:<\/strong>Th\u00eam ghi ch\u00fa \u0111\u1ec3 gi\u1ea3i th\u00edch logic ph\u1ee9c t\u1ea1p.<\/li>\n<li><strong>C\u00e2n b\u1eb1ng \u0111\u1ed9 chi ti\u1ebft:<\/strong>Kh\u00f4ng n\u00ean chia qu\u00e1 nh\u1ecf ho\u1eb7c qu\u00e1 l\u1edbn.<\/li>\n<li><strong>S\u1eed d\u1ee5ng k\u00fd hi\u1ec7u \u0111\u00fang:<\/strong>Ph\u00e2n bi\u1ec7t gi\u1eefa nh\u1eadp v\u00e0o v\u00e0 ph\u1ee5 thu\u1ed9c.<\/li>\n<li><strong>Gi\u1eef nguy\u00ean tr\u1ea1ng th\u00e1i t\u0129nh:<\/strong>Kh\u00f4ng tr\u1ed9n lu\u1ed3ng h\u00e0nh vi v\u00e0o c\u1ea5u tr\u00fac.<\/li>\n<\/ul>\n<h2>T\u00e1c \u0111\u1ed9ng c\u1ee7a vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a t\u1ed1t \ud83d\ude80<\/h2>\n<p>Vi\u1ec7c \u0111\u1ea7u t\u01b0 th\u1eddi gian \u0111\u1ec3 t\u1ea1o ra m\u1ed9t s\u01a1 \u0111\u1ed3 UML Package s\u1ea1ch s\u1ebd v\u00e0 ch\u00ednh x\u00e1c s\u1ebd mang l\u1ea1i l\u1ee3i \u00edch trong su\u1ed1t v\u00f2ng \u0111\u1eddi ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m. Khi c\u1ea5u tr\u00fac r\u00f5 r\u00e0ng:<\/p>\n<ul>\n<li><strong>Ti\u1ebfp nh\u1eadn th\u00e0nh vi\u00ean m\u1edbi nhanh h\u01a1n:<\/strong>C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n m\u1edbi c\u00f3 th\u1ec3 hi\u1ec3u b\u1ed1 c\u1ee5c h\u1ec7 th\u1ed1ng m\u1ed9t c\u00e1ch nhanh ch\u00f3ng.<\/li>\n<li><strong>T\u00e1i c\u1ea5u tr\u00fac an to\u00e0n h\u01a1n:<\/strong>B\u1ea1n bi\u1ebft ch\u00ednh x\u00e1c \u0111i\u1ec1u g\u00ec s\u1ebd b\u1ecb h\u1ecfng tr\u01b0\u1edbc khi thay \u0111\u1ed5i n\u00f3.<\/li>\n<li><strong>Giao ti\u1ebfp t\u1ed1t h\u01a1n:<\/strong>C\u00e1c b\u00ean li\u00ean quan v\u00e0 \u0111\u1ed9i k\u1ef9 thu\u1eadt chia s\u1ebb m\u1ed9t ng\u00f4n ng\u1eef tr\u1ef1c quan chung.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n:<\/strong>Vi\u1ec7c th\u00eam t\u00ednh n\u0103ng m\u1edbi tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n khi c\u00e1c ranh gi\u1edbi \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng.<\/li>\n<\/ul>\n<p>Tr\u00e1nh \u0111\u01b0\u1ee3c 10 sai l\u1ea7m ph\u1ed5 bi\u1ebfn n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u00e0i li\u1ec7u ki\u1ebfn tr\u00fac c\u1ee7a b\u1ea1n v\u1eabn l\u00e0 m\u1ed9t t\u00e0i s\u1ea3n qu\u00fd gi\u00e1 thay v\u00ec ngu\u1ed3n g\u00e2y nh\u1ea7m l\u1eabn. B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 c\u00e1c h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n s\u1ebd t\u1ea1o n\u00ean n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho c\u00e1c d\u1ef1 \u00e1n ph\u1ea7n m\u1ec1m c\u1ee7a m\u00ecnh.<\/p>\n<p>H\u00e3y nh\u1edb r\u1eb1ng s\u01a1 \u0111\u1ed3 l\u00e0 t\u00e0i li\u1ec7u s\u1ed1ng. Khi h\u1ec7 th\u1ed1ng ph\u00e1t tri\u1ec3n, c\u1ea5u tr\u00fac g\u00f3i n\u00ean \u0111\u01b0\u1ee3c xem x\u00e9t v\u00e0 c\u1eadp nh\u1eadt. Vi\u1ec7c b\u1ea3o tr\u00ec li\u00ean t\u1ee5c n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng bi\u1ec3u di\u1ec5n tr\u1ef1c quan v\u1eabn ch\u00ednh x\u00e1c v\u1edbi m\u00e3 ngu\u1ed3n th\u1ef1c t\u1ebf. Nh\u1eefng l\u1ea7n xem x\u00e9t \u0111\u1ecbnh k\u1ef3 c\u00f9ng \u0111\u1ed9i nh\u00f3m c\u00f3 th\u1ec3 gi\u00fap ph\u00e1t hi\u1ec7n s\u1ef1 l\u1ec7ch l\u1ea1c v\u1ec1 c\u1ea5u tr\u00fac tr\u01b0\u1edbc khi n\u00f3 tr\u1edf th\u00e0nh v\u1ea5n \u0111\u1ec1 nghi\u00eam tr\u1ecdng.<\/p>\n<p>B\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch ki\u1ec3m tra s\u01a1 \u0111\u1ed3 hi\u1ec7n t\u1ea1i c\u1ee7a b\u1ea1n d\u1ef1a tr\u00ean danh s\u00e1ch n\u00e0y. X\u00e1c \u0111\u1ecbnh nh\u1eefng sai l\u1ea7m n\u00e0o \u0111ang t\u1ed3n t\u1ea1i v\u00e0 l\u00ean k\u1ebf ho\u1ea1ch cho m\u1ed9t bu\u1ed5i t\u00e1i c\u1ea5u tr\u00fac \u0111\u1ec3 kh\u1eafc ph\u1ee5c ch\u00fang. Nh\u1eefng c\u1ea3i ti\u1ebfn nh\u1ecf trong c\u1ea5u tr\u00fac s\u1ebd d\u1eabn \u0111\u1ebfn l\u1ee3i \u00edch \u0111\u00e1ng k\u1ec3 v\u1ec1 kh\u1ea3 n\u0103ng duy tr\u00ec l\u00e2u d\u00e0i.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>S\u01a1 \u0111\u1ed3 g\u00f3i UML \u0111\u00f3ng vai tr\u00f2 n\u1ec1n t\u1ea3ng trong t\u00e0i li\u1ec7u ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m. Ch\u00fang cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ea5p cao v\u1ec1 c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau&hellip;<\/p>\n","protected":false},"author":1,"featured_media":1883,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"10 Sai l\u1ea7m trong s\u01a1 \u0111\u1ed3 UML Package v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c \ud83d\udee0\ufe0f","_yoast_wpseo_metadesc":"Tr\u00e1nh sai s\u00f3t trong m\u00f4 h\u00ecnh h\u00f3a UML. Kh\u00e1m ph\u00e1 10 sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong s\u01a1 \u0111\u1ed3 g\u00f3i v\u00e0 c\u00e1c c\u00e1ch kh\u1eafc ph\u1ee5c \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh \u0111\u1ec3 thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m t\u1ed1t h\u01a1n.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[79],"tags":[82,93],"class_list":["post-1882","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uml","tag-academic","tag-package-diagram"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>10 Sai l\u1ea7m trong s\u01a1 \u0111\u1ed3 UML Package v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c \ud83d\udee0\ufe0f<\/title>\n<meta name=\"description\" content=\"Tr\u00e1nh sai s\u00f3t trong m\u00f4 h\u00ecnh h\u00f3a UML. 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