{"id":6392,"date":"2026-02-04T18:17:47","date_gmt":"2026-02-04T10:17:47","guid":{"rendered":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow\/"},"modified":"2026-02-04T18:17:47","modified_gmt":"2026-02-04T10:17:47","slug":"comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow","status":"publish","type":"post","link":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): L\u00e0m s\u00e1ng t\u1ecf lu\u1ed3ng th\u00f4ng tin"},"content":{"rendered":"<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p>Vi\u1ec7c \u0111i qua m\u00ea cung c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi m\u1ed9t ng\u1ecdn \u0111\u00e8n soi s\u00e1ng, v\u00e0 \u0111\u00f3 ch\u00ednh l\u00e0 n\u01a1i m\u00e0<a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/a>(DFD) ph\u00e1t huy t\u00e1c d\u1ee5ng. Trong h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y, ch\u00fang t\u00f4i s\u1ebd \u0111i s\u00e2u v\u00e0o b\u1ea3n ch\u1ea5t c\u1ee7a DFD, cung c\u1ea5p kh\u00f4ng ch\u1ec9 c\u00e1c v\u00ed d\u1ee5 m\u00e0 c\u00f2n m\u1ed9t kh\u00e1m ph\u00e1 chi ti\u1ebft v\u1ec1 c\u00e1c th\u00e0nh ph\u1ea7n, quy t\u1eafc, \u01b0u \u0111i\u1ec3m, nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 m\u1ed9t h\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc.<\/p>\n<h3><strong>Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD):<\/strong><\/h3>\n<p>\u1ede b\u1ea3n ch\u1ea5t, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n trong m\u1ed9t h\u1ec7 th\u1ed1ng. N\u00f3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t b\u1ea3n \u0111\u1ed3 \u0111\u1ed9ng minh h\u1ecda \u0111\u1ea7u v\u00e0o, \u0111\u1ea7u ra, ngu\u1ed3n, l\u01b0u tr\u1eef v\u00e0 \u0111i\u1ec3m \u0111\u1ebfn c\u1ee7a d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng. C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a DFD bao g\u1ed3m:<\/p>\n<ol>\n<li><strong>Quy tr\u00ecnh:<\/strong> \u0110\u00e2y l\u00e0 nh\u1eefng ho\u1ea1t \u0111\u1ed9ng c\u1ed1t l\u00f5i trong h\u1ec7 th\u1ed1ng, t\u1eeb c\u00e1c nhi\u1ec7m v\u1ee5 \u0111\u01a1n gi\u1ea3n nh\u01b0 thu th\u1eadp d\u1eef li\u1ec7u \u0111\u1ebfn c\u00e1c quy tr\u00ecnh ph\u1ee9c t\u1ea1p nh\u01b0 t\u1ea1o b\u00e1o c\u00e1o to\u00e0n di\u1ec7n.<\/li>\n<li><strong>C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i:<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c ngu\u1ed3n ho\u1eb7c \u0111i\u1ec3m \u0111\u1ebfn c\u1ee7a th\u00f4ng tin t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng, bao g\u1ed3m c\u00e1 nh\u00e2n, t\u1ed5 ch\u1ee9c, m\u00e1y t\u00ednh ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c.<\/li>\n<li><strong>C\u00e1c kho d\u1eef li\u1ec7u:<\/strong> C\u00e1c kho l\u01b0u tr\u1eef n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef, \u0111\u1ea1i di\u1ec7n cho th\u00f4ng tin \u1edf tr\u1ea1ng th\u00e1i t\u0129nh v\u00e0 kh\u00f4ng \u0111ang di chuy\u1ec3n.<\/li>\n<li><strong>C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u:<\/strong> Ch\u00fang minh h\u1ecda s\u1ef1 di chuy\u1ec3n c\u1ee7a d\u1eef li\u1ec7u gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i, kho d\u1eef li\u1ec7u v\u00e0 c\u00e1c quy tr\u00ecnh, b\u1ea3n \u0111\u1ed3 h\u00f3a c\u00e1c h\u00e0nh tr\u00ecnh m\u00e0 d\u1eef li\u1ec7u \u0111i qua trong h\u1ec7 th\u1ed1ng.<\/li>\n<\/ol>\n<h4><strong>C\u00e1c k\u00fd hi\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong DFD:<\/strong><\/h4>\n<p>\u0110\u1ec3 l\u00e0m s\u1ed1ng \u0111\u1ed9ng c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a DFD, c\u00e1c k\u00fd hi\u1ec7u nh\u01b0 h\u1ec7 th\u1ed1ng Yourdon v\u00e0 Coad \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c t\u1ea1o v\u00e0 hi\u1ec3u c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y.<\/p>\n<h3><strong>C\u00e1c quy t\u1eafc v\u00e0 h\u01b0\u1edbng d\u1eabn \u0111\u1ec3 t\u1ea1o DFD:<\/strong><\/h3>\n<p>Vi\u1ec7c t\u1ea1o ra m\u1ed9t s\u01a1 \u0111\u1ed3 DFD m\u1ea1ch l\u1ea1c v\u00e0 d\u1ec5 hi\u1ec3u \u0111\u00f2i h\u1ecfi tu\u00e2n th\u1ee7 m\u1ed9t s\u1ed1 quy t\u1eafc:<\/p>\n<ol>\n<li><strong>Lu\u1ed3ng quy tr\u00ecnh:<\/strong> M\u1ed7i quy tr\u00ecnh ph\u1ea3i c\u00f3 \u00edt nh\u1ea5t m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u ra v\u00e0 m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o.<\/li>\n<li><strong>K\u1ebft n\u1ed1i kho d\u1eef li\u1ec7u:<\/strong> C\u00e1c kho d\u1eef li\u1ec7u ph\u1ea3i c\u00f3 \u00edt nh\u1ea5t m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o v\u00e0 m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u ra.<\/li>\n<li><strong>Li\u00ean k\u1ebft th\u1ef1c th\u1ec3 &#8211; quy tr\u00ecnh:<\/strong> C\u00e1c th\u1ef1c th\u1ec3 ph\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t quy tr\u00ecnh th\u00f4ng qua m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u.<\/li>\n<li><strong>Tr\u00e1nh giao nhau:<\/strong> C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u kh\u00f4ng \u0111\u01b0\u1ee3c giao nhau v\u1edbi nhau.<\/li>\n<li><strong>Truy c\u1eadp th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i:<\/strong> C\u00e1c kho d\u1eef li\u1ec7u kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i.<\/li>\n<\/ol>\n<h3><strong>\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a DFD:<\/strong><\/h3>\n<p>Hi\u1ec3u r\u00f5 c\u00e1c \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a DFD l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft:<\/p>\n<h4><strong>\u01afu \u0111i\u1ec3m:<\/strong><\/h4>\n<ul>\n<li><strong>\u0110\u01a1n gi\u1ea3n v\u1ec1 m\u1eb7t h\u00ecnh \u1ea3nh:<\/strong>M\u1ed9t k\u1ef9 thu\u1eadt tr\u1ef1c quan d\u1ec5 hi\u1ec3u, d\u1ec5 cho c\u00e1c b\u00ean li\u00ean quan v\u00e0 ng\u01b0\u1eddi d\u00f9ng n\u1eafm b\u1eaft.<\/li>\n<li><strong>G\u00f3c nh\u00ecn chi ti\u1ebft:<\/strong>Cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng:<\/strong>Minh h\u1ecda s\u1ef1 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng, th\u1ec3 hi\u1ec7n c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau.<\/li>\n<li><strong>Gi\u00e1 tr\u1ecb t\u00e0i li\u1ec7u h\u00f3a:<\/strong>Ph\u1ee5c v\u1ee5 nh\u01b0 m\u1ed9t ph\u1ea7n c\u00f3 gi\u00e1 tr\u1ecb trong t\u00e0i li\u1ec7u h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<h4><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong><\/h4>\n<ul>\n<li><strong>T\u1ed1n th\u1eddi gian:<\/strong>Vi\u1ec7c t\u1ea1o DFD c\u00f3 th\u1ec3 t\u1ed1n nhi\u1ec1u th\u1eddi gian.<\/li>\n<li><strong>Kho\u1ea3ng tr\u1ed1ng th\u00f4ng tin v\u1ec1 th\u1eddi gian:<\/strong>Thi\u1ebfu th\u00f4ng tin v\u1ec1 th\u1eddi gian, th\u1ee9 t\u1ef1 v\u00e0 \u0111\u1ed3ng b\u1ed9 h\u00f3a c\u1ee7a c\u00e1c qu\u00e1 tr\u00ecnh.<\/li>\n<li><strong>Th\u00e1ch th\u1ee9c \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng chuy\u00ean:<\/strong>C\u00f3 th\u1ec3 g\u00e2y kh\u00f3 kh\u0103n cho ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng chuy\u00ean trong vi\u1ec7c hi\u1ec3u s\u01a1 \u0111\u1ed3.<\/li>\n<\/ul>\n<h3><strong>V\u00ed d\u1ee5 v\u1ec1 DFD:<\/strong><\/h3>\n<ol>\n<li><strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ng\u1eef c\u1ea3nh (M\u1ee9c 0):<\/strong>\n<p>T\u1ed5ng quan c\u1ea5p cao n\u00e0y s\u1eed d\u1ee5ng m\u1ed9t qu\u00e1 tr\u00ecnh duy nh\u1ea5t \u0111\u1ec3 bi\u1ec3u di\u1ec5n to\u00e0n b\u1ed9 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. M\u1ed9t v\u00ed d\u1ee5 v\u1ec1 H\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng qu\u1ea7n \u00e1o \u0111\u01b0\u1ee3c minh h\u1ecda b\u00ean d\u01b0\u1edbi:<\/p>\n<p><img alt=\"Context DFD example\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/10\/18-context-dfd-example.png\"\/><\/p>\n<p><em>C\u00e1c b\u01b0\u1edbc t\u1ea1o s\u01a1 \u0111\u1ed3 DFD ng\u1eef c\u1ea3nh:<\/em><\/p>\n<ol>\n<li>X\u00e1c \u0111\u1ecbnh qu\u00e1 tr\u00ecnh.<\/li>\n<li>T\u1ea1o danh s\u00e1ch c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i.<\/li>\n<li>Li\u1ec7t k\u00ea c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u.<\/li>\n<li>V\u1ebd s\u01a1 \u0111\u1ed3.<\/li>\n<\/ol>\n<\/li>\n<li><strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1:<\/strong>\n<p>Ph\u00e2n t\u00edch qu\u00e1 tr\u00ecnh ch\u00ednh th\u00e0nh c\u00e1c qu\u00e1 tr\u00ecnh con v\u00e0 bao g\u1ed3m c\u00e1c kho d\u1eef li\u1ec7u, s\u01a1 \u0111\u1ed3 DFD c\u1ea5p 1 cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft h\u01a1n. V\u00ed d\u1ee5:<\/p>\n<p><img alt=\"Level 1 DFD example\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/10\/19-level-1-dfd-example.png\"\/><\/p>\n<p><em>C\u00e1c b\u01b0\u1edbc t\u1ea1o s\u01a1 \u0111\u1ed3 DFD c\u1ea5p 1:<\/em><\/p>\n<ol>\n<li>X\u00e1c \u0111\u1ecbnh c\u00e1c qu\u00e1 tr\u00ecnh (qu\u00e1 tr\u00ecnh ch\u00ednh v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh con).<\/li>\n<li>Li\u1ec7t k\u00ea c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i.<\/li>\n<li>Li\u1ec7t k\u00ea c\u00e1c kho d\u1eef li\u1ec7u.<\/li>\n<li>Li\u1ec7t k\u00ea c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u.<\/li>\n<li>V\u1ebd s\u01a1 \u0111\u1ed3.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<h3><strong>T\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u:<\/strong><\/h3>\n<p>Visual Paradigm l\u00e0 l\u1ef1a ch\u1ecdn tuy\u1ec7t v\u1eddi \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) nh\u1edd v\u00e0o t\u00ednh linh ho\u1ea1t, giao di\u1ec7n th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng v\u00e0 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng tr\u00ean c\u1ea3 phi\u00ean b\u1ea3n tr\u1ef1c tuy\u1ebfn v\u00e0 m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 l\u00fd do v\u00ec sao Visual Paradigm n\u1ed5i b\u1eadt nh\u01b0 m\u1ed9t g\u1ee3i \u00fd h\u00e0ng \u0111\u1ea7u:<\/p>\n<h3><strong>Visual Paradigm: C\u00f4ng c\u1ee5 DFD to\u00e0n di\u1ec7n<\/strong><\/h3>\n<h4>1. <strong>T\u00ednh linh ho\u1ea1t:<\/strong><\/h4>\n<p>Visual Paradigm h\u1ed7 tr\u1ee3 nhi\u1ec1u lo\u1ea1i s\u01a1 \u0111\u1ed3 kh\u00e1c nhau, tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p to\u00e0n di\u1ec7n cho nhi\u1ec1u nhu c\u1ea7u m\u00f4 h\u00ecnh h\u00f3a tr\u1ef1c quan. T\u1eeb s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ebfn s\u01a1 \u0111\u1ed3 UML, n\u00f3 bao ph\u1ee7 m\u1ed9t ph\u1ea1m vi \u0111a d\u1ea1ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 v\u1ebd s\u01a1 \u0111\u1ed3.<\/p>\n<h4>2. <strong>Giao di\u1ec7n th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng:<\/strong><\/h4>\n<p>D\u00f9 b\u1ea1n l\u00e0 chuy\u00ean gia c\u00f3 kinh nghi\u1ec7m hay ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u, Visual Paradigm cung c\u1ea5p giao di\u1ec7n tr\u1ef1c quan gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh t\u1ea1o c\u00e1c s\u01a1 \u0111\u1ed3 ph\u1ee9c t\u1ea1p. T\u00ednh n\u0103ng k\u00e9o v\u00e0 th\u1ea3 c\u00f9ng c\u00e1c m\u1eabu t\u00f9y ch\u1ec9nh gi\u00fap d\u1ec5 d\u00e0ng t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u h\u1ea5p d\u1eabn v\u1ec1 m\u1eb7t th\u1ecb gi\u00e1c.<\/p>\n<h4>3. <strong>Phi\u00ean b\u1ea3n tr\u1ef1c tuy\u1ebfn v\u00e0 m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n:<\/strong><\/h4>\n<p>Visual Paradigm cung c\u1ea5p s\u1ef1 linh ho\u1ea1t v\u1edbi c\u1ea3 hai phi\u00ean b\u1ea3n tr\u1ef1c tuy\u1ebfn v\u00e0 m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n, cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng l\u1ef1a ch\u1ecdn n\u1ec1n t\u1ea3ng ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi s\u1edf th\u00edch v\u00e0 nhu c\u1ea7u c\u1ee7a m\u00ecnh. Phi\u00ean b\u1ea3n tr\u1ef1c tuy\u1ebfn h\u1ed7 tr\u1ee3 l\u00e0m vi\u1ec7c nh\u00f3m, trong khi phi\u00ean b\u1ea3n m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n cung c\u1ea5p kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng ngo\u1ea1i tuy\u1ebfn.<\/p>\n<h4>4. <strong>S\u1eb5n c\u00f3 phi\u00ean b\u1ea3n mi\u1ec5n ph\u00ed:<\/strong><\/h4>\n<p>M\u1eb7c d\u00f9 Visual Paradigm cung c\u1ea5p c\u00e1c t\u00ednh n\u0103ng cao c\u1ea5p trong c\u00e1c phi\u00ean b\u1ea3n tr\u1ea3 ph\u00ed, n\u00f3 c\u0169ng cung c\u1ea5p m\u1ed9t phi\u00ean b\u1ea3n mi\u1ec5n ph\u00ed v\u1edbi c\u00e1c ch\u1ee9c n\u0103ng thi\u1ebft y\u1ebfu. \u0110i\u1ec1u n\u00e0y gi\u00fap n\u00f3 tr\u1edf n\u00ean d\u1ec5 ti\u1ebfp c\u1eadn v\u1edbi ng\u01b0\u1eddi d\u00f9ng c\u00f3 c\u00e1c gi\u1edbi h\u1ea1n ng\u00e2n s\u00e1ch kh\u00e1c nhau, \u0111\u1ed3ng th\u1eddi v\u1eabn mang l\u1ea1i tr\u1ea3i nghi\u1ec7m v\u1ebd s\u01a1 \u0111\u1ed3 m\u1ea1nh m\u1ebd.<\/p>\n<h4>5. <strong>H\u1ee3p t\u00e1c th\u1eddi gian th\u1ef1c:<\/strong><\/h4>\n<p>Phi\u00ean b\u1ea3n tr\u1ef1c tuy\u1ebfn c\u1ee7a Visual Paradigm h\u1ed7 tr\u1ee3 h\u1ee3p t\u00e1c th\u1eddi gian th\u1ef1c, cho ph\u00e9p nhi\u1ec1u ng\u01b0\u1eddi c\u00f9ng l\u00e0m vi\u1ec7c tr\u00ean c\u00f9ng m\u1ed9t d\u1ef1 \u00e1n \u0111\u1ed3ng th\u1eddi. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch cho c\u00e1c nh\u00f3m l\u00e0m vi\u1ec7c tr\u00ean c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p y\u00eau c\u1ea7u ph\u00e1t tri\u1ec3n s\u01a1 \u0111\u1ed3 theo h\u00ecnh th\u1ee9c h\u1ee3p t\u00e1c.<\/p>\n<h4>6. <strong>T\u00e0i li\u1ec7u v\u00e0 h\u01b0\u1edbng d\u1eabn phong ph\u00fa:<\/strong><\/h4>\n<p>Visual Paradigm cung c\u1ea5p t\u00e0i li\u1ec7u v\u00e0 h\u01b0\u1edbng d\u1eabn phong ph\u00fa, gi\u00fap ng\u01b0\u1eddi d\u00f9ng d\u1ec5 h\u1ecdc v\u00e0 t\u1eadn d\u1ee5ng t\u1ed1i \u0111a c\u00e1c t\u00ednh n\u0103ng c\u1ee7a n\u00f3. S\u1ef1 h\u1ed7 tr\u1ee3 n\u00e0y r\u1ea5t c\u00f3 gi\u00e1 tr\u1ecb \u0111\u1ed1i v\u1edbi c\u1ea3 ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u v\u00e0 ng\u01b0\u1eddi d\u00f9ng n\u00e2ng cao mu\u1ed1n kh\u00e1m ph\u00e1 h\u1ebft ti\u1ec1m n\u0103ng c\u1ee7a c\u00f4ng c\u1ee5.<\/p>\n<h4>7. <strong>Kh\u1ea3 n\u0103ng t\u00edch h\u1ee3p:<\/strong><\/h4>\n<p>Visual Paradigm t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 v\u00e0 n\u1ec1n t\u1ea3ng kh\u00e1c, n\u00e2ng cao gi\u00e1 tr\u1ecb s\u1eed d\u1ee5ng trong c\u00e1c m\u00f4i tr\u01b0\u1eddng ph\u00e1t tri\u1ec3n \u0111a d\u1ea1ng. D\u00f9 b\u1ea1n \u0111ang l\u00e0m vi\u1ec7c v\u1edbi h\u1ec7 th\u1ed1ng ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n hay c\u00e1c c\u00f4ng c\u1ee5 qu\u1ea3n l\u00fd d\u1ef1 \u00e1n, Visual Paradigm \u0111\u1ec1u c\u00f3 th\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ee7a b\u1ea1n.<\/p>\n<h3><strong>C\u00e1ch b\u1eaft \u0111\u1ea7u:<\/strong><\/h3>\n<ol>\n<li><strong>Truy c\u1eadp trang web Visual Paradigm:<\/strong>Truy c\u1eadp trang web Visual Paradigm v\u00e0 ch\u1ecdn phi\u00ean b\u1ea3n ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a b\u1ea1n (tr\u1ef1c tuy\u1ebfn ho\u1eb7c m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n).<\/li>\n<li><strong>T\u1ea3i xu\u1ed1ng v\u00e0 c\u00e0i \u0111\u1eb7t:<\/strong> T\u1ea3i xu\u1ed1ng v\u00e0 c\u00e0i \u0111\u1eb7t phi\u00ean b\u1ea3n d\u00e0nh cho m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n ho\u1eb7c truy c\u1eadp phi\u00ean b\u1ea3n tr\u1ef1c tuy\u1ebfn th\u00f4ng qua tr\u00ecnh duy\u1ec7t web c\u1ee7a b\u1ea1n.<\/li>\n<li><strong>T\u1ea1o t\u00e0i kho\u1ea3n mi\u1ec5n ph\u00ed:<\/strong> N\u1ebfu s\u1eed d\u1ee5ng phi\u00ean b\u1ea3n tr\u1ef1c tuy\u1ebfn, h\u00e3y t\u1ea1o t\u00e0i kho\u1ea3n mi\u1ec5n ph\u00ed \u0111\u1ec3 b\u1eaft \u0111\u1ea7u. N\u1ebfu s\u1eed d\u1ee5ng phi\u00ean b\u1ea3n d\u00e0nh cho m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n, h\u00e3y l\u00e0m theo h\u01b0\u1edbng d\u1eabn c\u00e0i \u0111\u1eb7t.<\/li>\n<li><strong>Kh\u00e1m ph\u00e1 m\u1eabu v\u00e0 t\u00ednh n\u0103ng:<\/strong> Visual Paradigm cung c\u1ea5p nhi\u1ec1u m\u1eabu kh\u00e1c nhau cho c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u. Kh\u00e1m ph\u00e1 c\u00e1c m\u1eabu n\u00e0y v\u00e0 b\u1eaft \u0111\u1ea7u t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n.<\/li>\n<\/ol>\n<h3><strong>K\u1ebft lu\u1eadn<\/strong><\/h3>\n<p>B\u00ean c\u1ea1nh s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh v\u00e0 s\u01a1 \u0111\u1ed3 DFD c\u1ea5p \u0111\u1ed9 1, c\u00f2n c\u00f3 c\u00e1c c\u1ea5p \u0111\u1ed9 s\u00e2u h\u01a1n (c\u1ea5p \u0111\u1ed9 2 v\u00e0 c\u1ea5p \u0111\u1ed9 3) cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft h\u01a1n v\u1ec1 \u0111\u1ed9ng l\u1ef1c c\u1ee7a h\u1ec7 th\u1ed1ng. M\u1eb7c d\u00f9 vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 DFD c\u00f3 th\u1ec3 t\u1ed1n th\u1eddi gian, nh\u01b0ng gi\u00e1 tr\u1ecb kh\u00f4ng th\u1ec3 thi\u1ebfu c\u1ee7a n\u00f3 trong vi\u1ec7c th\u1ec3 hi\u1ec7n v\u00e0 truy\u1ec1n \u0111\u1ea1t th\u00f4ng tin quan tr\u1ecdng trong c\u00e1c quy tr\u00ecnh kinh doanh l\u00e0 \u0111i\u1ec1u kh\u00f4ng th\u1ec3 b\u00e0n c\u00e3i. T\u1eeb h\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng kh\u00e1ch h\u00e0ng \u0111\u1ebfn c\u00e1c quy tr\u00ecnh ng\u00e2n h\u00e0ng ph\u1ee9c t\u1ea1p, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u lu\u00f4n l\u00e0 ng\u01b0\u1eddi b\u1ea1n \u0111\u1ed3ng h\u00e0nh kh\u00f4ng th\u1ec3 thi\u1ebfu trong h\u00e0nh tr\u00ecnh ra quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean d\u1eef li\u1ec7u c\u1ee7a ch\u00fang ta. Vi\u1ec7c hi\u1ec3u r\u00f5 lu\u1ed3ng th\u00f4ng tin ph\u1ee9c t\u1ea1p b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a quy tr\u00ecnh v\u00e0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t, v\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ch\u00ednh l\u00e0 chi\u1ebfc la b\u00e0n d\u1eabn \u0111\u01b0\u1eddng trong h\u00e0nh tr\u00ecnh n\u00e0y.<\/p>\n<p><a href=\"http:\/\/visual-paradigm.com\">Visual Paradigm<\/a> n\u1ed5i b\u1eadt nh\u01b0 m\u1ed9t l\u1ef1a ch\u1ecdn m\u1ea1nh m\u1ebd d\u00e0nh cho c\u00e1 nh\u00e2n v\u00e0 nh\u00f3m \u0111ang t\u00ecm ki\u1ebfm m\u1ed9t c\u00f4ng c\u1ee5 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u linh ho\u1ea1t, th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng v\u00e0 mi\u1ec5n ph\u00ed. Vi\u1ec7c c\u00f3 s\u1eb5n c\u1ea3 phi\u00ean b\u1ea3n tr\u1ef1c tuy\u1ebfn v\u00e0 phi\u00ean b\u1ea3n d\u00e0nh cho m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n \u0111\u1ea3m b\u1ea3o t\u00ednh linh ho\u1ea1t, trong khi b\u1ed9 t\u00ednh n\u0103ng phong ph\u00fa v\u00e0 kh\u1ea3 n\u0103ng h\u1ee3p t\u00e1c gi\u00fap n\u00f3 tr\u1edf th\u00e0nh t\u00e0i s\u1ea3n qu\u00fd gi\u00e1 cho nhu c\u1ea7u m\u00f4 h\u00ecnh h\u00f3a h\u1ec7 th\u1ed1ng v\u00e0 v\u1ebd s\u01a1 \u0111\u1ed3.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gi\u1edbi thi\u1ec7u Vi\u1ec7c \u0111i qua m\u00ea cung c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi m\u1ed9t ng\u1ecdn \u0111\u00e8n soi s\u00e1ng, v\u00e0 \u0111\u00f3 ch\u00ednh l\u00e0 n\u01a1i m\u00e0S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u(DFD) ph\u00e1t huy t\u00e1c d\u1ee5ng. Trong h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y, ch\u00fang t\u00f4i s\u1ebd \u0111i s\u00e2u v\u00e0o b\u1ea3n ch\u1ea5t c\u1ee7a DFD, cung c\u1ea5p kh\u00f4ng ch\u1ec9 c\u00e1c v\u00ed d\u1ee5 m\u00e0 c\u00f2n m\u1ed9t kh\u00e1m ph\u00e1 chi ti\u1ebft v\u1ec1 c\u00e1c th\u00e0nh ph\u1ea7n, quy t\u1eafc, \u01b0u \u0111i\u1ec3m, nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 m\u1ed9t h\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc. Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): \u1ede b\u1ea3n ch\u1ea5t, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n trong m\u1ed9t h\u1ec7 th\u1ed1ng. N\u00f3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t b\u1ea3n \u0111\u1ed3 \u0111\u1ed9ng minh h\u1ecda \u0111\u1ea7u v\u00e0o, \u0111\u1ea7u ra, ngu\u1ed3n, l\u01b0u tr\u1eef v\u00e0 \u0111i\u1ec3m \u0111\u1ebfn c\u1ee7a d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng. C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a DFD bao g\u1ed3m: Quy tr\u00ecnh: \u0110\u00e2y l\u00e0 nh\u1eefng ho\u1ea1t \u0111\u1ed9ng c\u1ed1t l\u00f5i trong h\u1ec7 th\u1ed1ng, t\u1eeb c\u00e1c nhi\u1ec7m v\u1ee5 \u0111\u01a1n gi\u1ea3n nh\u01b0 thu th\u1eadp d\u1eef li\u1ec7u \u0111\u1ebfn c\u00e1c quy tr\u00ecnh ph\u1ee9c t\u1ea1p nh\u01b0 t\u1ea1o b\u00e1o c\u00e1o to\u00e0n di\u1ec7n. C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i: \u0110\u00e2y l\u00e0 c\u00e1c ngu\u1ed3n ho\u1eb7c \u0111i\u1ec3m \u0111\u1ebfn c\u1ee7a th\u00f4ng tin t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng, bao g\u1ed3m c\u00e1 nh\u00e2n, t\u1ed5 ch\u1ee9c, m\u00e1y t\u00ednh ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c. C\u00e1c kho d\u1eef li\u1ec7u: C\u00e1c kho l\u01b0u tr\u1eef n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef, \u0111\u1ea1i di\u1ec7n cho th\u00f4ng tin \u1edf tr\u1ea1ng th\u00e1i t\u0129nh v\u00e0 kh\u00f4ng \u0111ang di chuy\u1ec3n. C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u: Ch\u00fang minh h\u1ecda s\u1ef1 di chuy\u1ec3n c\u1ee7a d\u1eef li\u1ec7u gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i, kho d\u1eef li\u1ec7u v\u00e0 c\u00e1c quy tr\u00ecnh, b\u1ea3n \u0111\u1ed3 h\u00f3a c\u00e1c h\u00e0nh tr\u00ecnh m\u00e0 d\u1eef li\u1ec7u \u0111i qua trong h\u1ec7 th\u1ed1ng. C\u00e1c k\u00fd hi\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong DFD: \u0110\u1ec3 l\u00e0m s\u1ed1ng \u0111\u1ed9ng c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a DFD, c\u00e1c k\u00fd hi\u1ec7u nh\u01b0 h\u1ec7 th\u1ed1ng Yourdon v\u00e0 Coad \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c t\u1ea1o v\u00e0 hi\u1ec3u c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y. C\u00e1c quy t\u1eafc v\u00e0 h\u01b0\u1edbng d\u1eabn \u0111\u1ec3 t\u1ea1o DFD: Vi\u1ec7c t\u1ea1o ra m\u1ed9t s\u01a1 \u0111\u1ed3 DFD m\u1ea1ch l\u1ea1c v\u00e0 d\u1ec5 hi\u1ec3u \u0111\u00f2i h\u1ecfi tu\u00e2n th\u1ee7 m\u1ed9t s\u1ed1 quy t\u1eafc: Lu\u1ed3ng quy tr\u00ecnh: M\u1ed7i quy tr\u00ecnh ph\u1ea3i c\u00f3 \u00edt nh\u1ea5t m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u ra v\u00e0 m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o. K\u1ebft n\u1ed1i kho d\u1eef li\u1ec7u: C\u00e1c kho d\u1eef li\u1ec7u ph\u1ea3i c\u00f3 \u00edt nh\u1ea5t m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o v\u00e0 m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u ra. Li\u00ean k\u1ebft th\u1ef1c th\u1ec3 &#8211; quy tr\u00ecnh: C\u00e1c th\u1ef1c th\u1ec3 ph\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t quy tr\u00ecnh th\u00f4ng qua m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u. Tr\u00e1nh giao nhau: C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u kh\u00f4ng \u0111\u01b0\u1ee3c giao nhau v\u1edbi nhau. Truy c\u1eadp th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i: C\u00e1c kho d\u1eef li\u1ec7u kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. \u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a DFD: Hi\u1ec3u r\u00f5 c\u00e1c \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a DFD l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft: \u01afu \u0111i\u1ec3m: \u0110\u01a1n gi\u1ea3n v\u1ec1 m\u1eb7t h\u00ecnh \u1ea3nh:M\u1ed9t k\u1ef9 thu\u1eadt tr\u1ef1c quan d\u1ec5 hi\u1ec3u, d\u1ec5 cho c\u00e1c b\u00ean li\u00ean quan v\u00e0 ng\u01b0\u1eddi d\u00f9ng n\u1eafm b\u1eaft. G\u00f3c nh\u00ecn chi ti\u1ebft:Cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng. Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng:Minh h\u1ecda s\u1ef1 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng, th\u1ec3 hi\u1ec7n c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau. Gi\u00e1 tr\u1ecb t\u00e0i li\u1ec7u h\u00f3a:Ph\u1ee5c v\u1ee5 nh\u01b0 m\u1ed9t ph\u1ea7n c\u00f3 gi\u00e1 tr\u1ecb trong t\u00e0i li\u1ec7u h\u1ec7 th\u1ed1ng. Nh\u01b0\u1ee3c \u0111i\u1ec3m: T\u1ed1n th\u1eddi gian:Vi\u1ec7c t\u1ea1o DFD c\u00f3 th\u1ec3 t\u1ed1n nhi\u1ec1u th\u1eddi gian. Kho\u1ea3ng tr\u1ed1ng th\u00f4ng tin v\u1ec1 th\u1eddi gian:Thi\u1ebfu th\u00f4ng tin v\u1ec1 th\u1eddi gian, th\u1ee9 t\u1ef1 v\u00e0 \u0111\u1ed3ng b\u1ed9 h\u00f3a c\u1ee7a c\u00e1c qu\u00e1 tr\u00ecnh. Th\u00e1ch th\u1ee9c \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng chuy\u00ean:C\u00f3 th\u1ec3 g\u00e2y kh\u00f3 kh\u0103n cho ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng chuy\u00ean trong vi\u1ec7c hi\u1ec3u s\u01a1 \u0111\u1ed3. V\u00ed d\u1ee5 v\u1ec1 DFD: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ng\u1eef c\u1ea3nh (M\u1ee9c 0): T\u1ed5ng quan c\u1ea5p cao n\u00e0y s\u1eed d\u1ee5ng m\u1ed9t qu\u00e1 tr\u00ecnh duy nh\u1ea5t \u0111\u1ec3 bi\u1ec3u di\u1ec5n to\u00e0n b\u1ed9 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. M\u1ed9t v\u00ed d\u1ee5 v\u1ec1 H\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng qu\u1ea7n \u00e1o \u0111\u01b0\u1ee3c minh h\u1ecda b\u00ean d\u01b0\u1edbi: C\u00e1c b\u01b0\u1edbc t\u1ea1o s\u01a1 \u0111\u1ed3 DFD ng\u1eef c\u1ea3nh: X\u00e1c \u0111\u1ecbnh qu\u00e1 tr\u00ecnh. T\u1ea1o danh s\u00e1ch c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. Li\u1ec7t k\u00ea c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u. V\u1ebd s\u01a1 \u0111\u1ed3. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1: Ph\u00e2n t\u00edch qu\u00e1 tr\u00ecnh ch\u00ednh th\u00e0nh c\u00e1c qu\u00e1 tr\u00ecnh con v\u00e0 bao g\u1ed3m c\u00e1c kho d\u1eef li\u1ec7u, s\u01a1 \u0111\u1ed3 DFD c\u1ea5p 1 cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft h\u01a1n. V\u00ed d\u1ee5: C\u00e1c b\u01b0\u1edbc t\u1ea1o s\u01a1 \u0111\u1ed3 DFD c\u1ea5p 1: X\u00e1c \u0111\u1ecbnh c\u00e1c qu\u00e1 tr\u00ecnh (qu\u00e1 tr\u00ecnh ch\u00ednh v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh con). Li\u1ec7t k\u00ea c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. Li\u1ec7t k\u00ea c\u00e1c kho d\u1eef li\u1ec7u. Li\u1ec7t k\u00ea c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u. V\u1ebd s\u01a1 \u0111\u1ed3. T\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: Visual Paradigm l\u00e0 l\u1ef1a ch\u1ecdn tuy\u1ec7t v\u1eddi \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) nh\u1edd v\u00e0o t\u00ednh linh ho\u1ea1t, giao di\u1ec7n th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng v\u00e0 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng tr\u00ean c\u1ea3 phi\u00ean b\u1ea3n tr\u1ef1c tuy\u1ebfn v\u00e0 m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 l\u00fd do v\u00ec sao Visual Paradigm n\u1ed5i b\u1eadt nh\u01b0 m\u1ed9t g\u1ee3i \u00fd h\u00e0ng \u0111\u1ea7u: Visual Paradigm: C\u00f4ng c\u1ee5 DFD to\u00e0n di\u1ec7n 1. T\u00ednh linh ho\u1ea1t: Visual Paradigm h\u1ed7 tr\u1ee3 nhi\u1ec1u lo\u1ea1i s\u01a1 \u0111\u1ed3 kh\u00e1c nhau, tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p to\u00e0n di\u1ec7n cho nhi\u1ec1u nhu c\u1ea7u m\u00f4 h\u00ecnh h\u00f3a tr\u1ef1c quan. T\u1eeb s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ebfn s\u01a1 \u0111\u1ed3 UML, n\u00f3 bao ph\u1ee7 m\u1ed9t ph\u1ea1m vi \u0111a d\u1ea1ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 v\u1ebd s\u01a1 \u0111\u1ed3. 2. Giao di\u1ec7n th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng: D\u00f9 b\u1ea1n l\u00e0 chuy\u00ean gia c\u00f3 kinh nghi\u1ec7m hay ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u, Visual Paradigm cung c\u1ea5p giao di\u1ec7n tr\u1ef1c quan gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh t\u1ea1o c\u00e1c s\u01a1 \u0111\u1ed3 ph\u1ee9c t\u1ea1p. T\u00ednh n\u0103ng k\u00e9o v\u00e0 th\u1ea3 c\u00f9ng c\u00e1c m\u1eabu t\u00f9y ch\u1ec9nh gi\u00fap d\u1ec5 d\u00e0ng t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u h\u1ea5p d\u1eabn v\u1ec1 m\u1eb7t th\u1ecb gi\u00e1c. 3. Phi\u00ean b\u1ea3n tr\u1ef1c tuy\u1ebfn v\u00e0 m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n: Visual Paradigm cung c\u1ea5p s\u1ef1 linh ho\u1ea1t v\u1edbi c\u1ea3 hai<a href=\"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow\/\" rel=\"bookmark\"><span class=\"screen-reader-text\">H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): L\u00e0m s\u00e1ng t\u1ecf lu\u1ed3ng th\u00f4ng tin<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_eb_attr":"","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[23],"tags":[],"class_list":["post-6392","post","type-post","status-publish","format-standard","hentry","category-dfd"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): L\u00e0m s\u00e1ng t\u1ecf lu\u1ed3ng th\u00f4ng tin - Visual Paradigm Guides Vietnamese<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): L\u00e0m s\u00e1ng t\u1ecf lu\u1ed3ng th\u00f4ng tin - Visual Paradigm Guides Vietnamese\" \/>\n<meta property=\"og:description\" content=\"Gi\u1edbi thi\u1ec7u Vi\u1ec7c \u0111i qua m\u00ea cung c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi m\u1ed9t ng\u1ecdn \u0111\u00e8n soi s\u00e1ng, v\u00e0 \u0111\u00f3 ch\u00ednh l\u00e0 n\u01a1i m\u00e0S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u(DFD) ph\u00e1t huy t\u00e1c d\u1ee5ng. Trong h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y, ch\u00fang t\u00f4i s\u1ebd \u0111i s\u00e2u v\u00e0o b\u1ea3n ch\u1ea5t c\u1ee7a DFD, cung c\u1ea5p kh\u00f4ng ch\u1ec9 c\u00e1c v\u00ed d\u1ee5 m\u00e0 c\u00f2n m\u1ed9t kh\u00e1m ph\u00e1 chi ti\u1ebft v\u1ec1 c\u00e1c th\u00e0nh ph\u1ea7n, quy t\u1eafc, \u01b0u \u0111i\u1ec3m, nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 m\u1ed9t h\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc. Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): \u1ede b\u1ea3n ch\u1ea5t, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n trong m\u1ed9t h\u1ec7 th\u1ed1ng. N\u00f3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t b\u1ea3n \u0111\u1ed3 \u0111\u1ed9ng minh h\u1ecda \u0111\u1ea7u v\u00e0o, \u0111\u1ea7u ra, ngu\u1ed3n, l\u01b0u tr\u1eef v\u00e0 \u0111i\u1ec3m \u0111\u1ebfn c\u1ee7a d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng. C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a DFD bao g\u1ed3m: Quy tr\u00ecnh: \u0110\u00e2y l\u00e0 nh\u1eefng ho\u1ea1t \u0111\u1ed9ng c\u1ed1t l\u00f5i trong h\u1ec7 th\u1ed1ng, t\u1eeb c\u00e1c nhi\u1ec7m v\u1ee5 \u0111\u01a1n gi\u1ea3n nh\u01b0 thu th\u1eadp d\u1eef li\u1ec7u \u0111\u1ebfn c\u00e1c quy tr\u00ecnh ph\u1ee9c t\u1ea1p nh\u01b0 t\u1ea1o b\u00e1o c\u00e1o to\u00e0n di\u1ec7n. C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i: \u0110\u00e2y l\u00e0 c\u00e1c ngu\u1ed3n ho\u1eb7c \u0111i\u1ec3m \u0111\u1ebfn c\u1ee7a th\u00f4ng tin t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng, bao g\u1ed3m c\u00e1 nh\u00e2n, t\u1ed5 ch\u1ee9c, m\u00e1y t\u00ednh ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c. C\u00e1c kho d\u1eef li\u1ec7u: C\u00e1c kho l\u01b0u tr\u1eef n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef, \u0111\u1ea1i di\u1ec7n cho th\u00f4ng tin \u1edf tr\u1ea1ng th\u00e1i t\u0129nh v\u00e0 kh\u00f4ng \u0111ang di chuy\u1ec3n. C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u: Ch\u00fang minh h\u1ecda s\u1ef1 di chuy\u1ec3n c\u1ee7a d\u1eef li\u1ec7u gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i, kho d\u1eef li\u1ec7u v\u00e0 c\u00e1c quy tr\u00ecnh, b\u1ea3n \u0111\u1ed3 h\u00f3a c\u00e1c h\u00e0nh tr\u00ecnh m\u00e0 d\u1eef li\u1ec7u \u0111i qua trong h\u1ec7 th\u1ed1ng. C\u00e1c k\u00fd hi\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong DFD: \u0110\u1ec3 l\u00e0m s\u1ed1ng \u0111\u1ed9ng c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a DFD, c\u00e1c k\u00fd hi\u1ec7u nh\u01b0 h\u1ec7 th\u1ed1ng Yourdon v\u00e0 Coad \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c t\u1ea1o v\u00e0 hi\u1ec3u c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y. C\u00e1c quy t\u1eafc v\u00e0 h\u01b0\u1edbng d\u1eabn \u0111\u1ec3 t\u1ea1o DFD: Vi\u1ec7c t\u1ea1o ra m\u1ed9t s\u01a1 \u0111\u1ed3 DFD m\u1ea1ch l\u1ea1c v\u00e0 d\u1ec5 hi\u1ec3u \u0111\u00f2i h\u1ecfi tu\u00e2n th\u1ee7 m\u1ed9t s\u1ed1 quy t\u1eafc: Lu\u1ed3ng quy tr\u00ecnh: M\u1ed7i quy tr\u00ecnh ph\u1ea3i c\u00f3 \u00edt nh\u1ea5t m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u ra v\u00e0 m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o. K\u1ebft n\u1ed1i kho d\u1eef li\u1ec7u: C\u00e1c kho d\u1eef li\u1ec7u ph\u1ea3i c\u00f3 \u00edt nh\u1ea5t m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o v\u00e0 m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u ra. Li\u00ean k\u1ebft th\u1ef1c th\u1ec3 &#8211; quy tr\u00ecnh: C\u00e1c th\u1ef1c th\u1ec3 ph\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t quy tr\u00ecnh th\u00f4ng qua m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u. Tr\u00e1nh giao nhau: C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u kh\u00f4ng \u0111\u01b0\u1ee3c giao nhau v\u1edbi nhau. Truy c\u1eadp th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i: C\u00e1c kho d\u1eef li\u1ec7u kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. \u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a DFD: Hi\u1ec3u r\u00f5 c\u00e1c \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a DFD l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft: \u01afu \u0111i\u1ec3m: \u0110\u01a1n gi\u1ea3n v\u1ec1 m\u1eb7t h\u00ecnh \u1ea3nh:M\u1ed9t k\u1ef9 thu\u1eadt tr\u1ef1c quan d\u1ec5 hi\u1ec3u, d\u1ec5 cho c\u00e1c b\u00ean li\u00ean quan v\u00e0 ng\u01b0\u1eddi d\u00f9ng n\u1eafm b\u1eaft. G\u00f3c nh\u00ecn chi ti\u1ebft:Cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng. Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng:Minh h\u1ecda s\u1ef1 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng, th\u1ec3 hi\u1ec7n c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau. Gi\u00e1 tr\u1ecb t\u00e0i li\u1ec7u h\u00f3a:Ph\u1ee5c v\u1ee5 nh\u01b0 m\u1ed9t ph\u1ea7n c\u00f3 gi\u00e1 tr\u1ecb trong t\u00e0i li\u1ec7u h\u1ec7 th\u1ed1ng. Nh\u01b0\u1ee3c \u0111i\u1ec3m: T\u1ed1n th\u1eddi gian:Vi\u1ec7c t\u1ea1o DFD c\u00f3 th\u1ec3 t\u1ed1n nhi\u1ec1u th\u1eddi gian. Kho\u1ea3ng tr\u1ed1ng th\u00f4ng tin v\u1ec1 th\u1eddi gian:Thi\u1ebfu th\u00f4ng tin v\u1ec1 th\u1eddi gian, th\u1ee9 t\u1ef1 v\u00e0 \u0111\u1ed3ng b\u1ed9 h\u00f3a c\u1ee7a c\u00e1c qu\u00e1 tr\u00ecnh. Th\u00e1ch th\u1ee9c \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng chuy\u00ean:C\u00f3 th\u1ec3 g\u00e2y kh\u00f3 kh\u0103n cho ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng chuy\u00ean trong vi\u1ec7c hi\u1ec3u s\u01a1 \u0111\u1ed3. V\u00ed d\u1ee5 v\u1ec1 DFD: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ng\u1eef c\u1ea3nh (M\u1ee9c 0): T\u1ed5ng quan c\u1ea5p cao n\u00e0y s\u1eed d\u1ee5ng m\u1ed9t qu\u00e1 tr\u00ecnh duy nh\u1ea5t \u0111\u1ec3 bi\u1ec3u di\u1ec5n to\u00e0n b\u1ed9 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. M\u1ed9t v\u00ed d\u1ee5 v\u1ec1 H\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng qu\u1ea7n \u00e1o \u0111\u01b0\u1ee3c minh h\u1ecda b\u00ean d\u01b0\u1edbi: C\u00e1c b\u01b0\u1edbc t\u1ea1o s\u01a1 \u0111\u1ed3 DFD ng\u1eef c\u1ea3nh: X\u00e1c \u0111\u1ecbnh qu\u00e1 tr\u00ecnh. T\u1ea1o danh s\u00e1ch c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. Li\u1ec7t k\u00ea c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u. V\u1ebd s\u01a1 \u0111\u1ed3. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1: Ph\u00e2n t\u00edch qu\u00e1 tr\u00ecnh ch\u00ednh th\u00e0nh c\u00e1c qu\u00e1 tr\u00ecnh con v\u00e0 bao g\u1ed3m c\u00e1c kho d\u1eef li\u1ec7u, s\u01a1 \u0111\u1ed3 DFD c\u1ea5p 1 cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft h\u01a1n. V\u00ed d\u1ee5: C\u00e1c b\u01b0\u1edbc t\u1ea1o s\u01a1 \u0111\u1ed3 DFD c\u1ea5p 1: X\u00e1c \u0111\u1ecbnh c\u00e1c qu\u00e1 tr\u00ecnh (qu\u00e1 tr\u00ecnh ch\u00ednh v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh con). Li\u1ec7t k\u00ea c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. Li\u1ec7t k\u00ea c\u00e1c kho d\u1eef li\u1ec7u. Li\u1ec7t k\u00ea c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u. V\u1ebd s\u01a1 \u0111\u1ed3. T\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: Visual Paradigm l\u00e0 l\u1ef1a ch\u1ecdn tuy\u1ec7t v\u1eddi \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) nh\u1edd v\u00e0o t\u00ednh linh ho\u1ea1t, giao di\u1ec7n th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng v\u00e0 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng tr\u00ean c\u1ea3 phi\u00ean b\u1ea3n tr\u1ef1c tuy\u1ebfn v\u00e0 m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 l\u00fd do v\u00ec sao Visual Paradigm n\u1ed5i b\u1eadt nh\u01b0 m\u1ed9t g\u1ee3i \u00fd h\u00e0ng \u0111\u1ea7u: Visual Paradigm: C\u00f4ng c\u1ee5 DFD to\u00e0n di\u1ec7n 1. T\u00ednh linh ho\u1ea1t: Visual Paradigm h\u1ed7 tr\u1ee3 nhi\u1ec1u lo\u1ea1i s\u01a1 \u0111\u1ed3 kh\u00e1c nhau, tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p to\u00e0n di\u1ec7n cho nhi\u1ec1u nhu c\u1ea7u m\u00f4 h\u00ecnh h\u00f3a tr\u1ef1c quan. T\u1eeb s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ebfn s\u01a1 \u0111\u1ed3 UML, n\u00f3 bao ph\u1ee7 m\u1ed9t ph\u1ea1m vi \u0111a d\u1ea1ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 v\u1ebd s\u01a1 \u0111\u1ed3. 2. Giao di\u1ec7n th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng: D\u00f9 b\u1ea1n l\u00e0 chuy\u00ean gia c\u00f3 kinh nghi\u1ec7m hay ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u, Visual Paradigm cung c\u1ea5p giao di\u1ec7n tr\u1ef1c quan gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh t\u1ea1o c\u00e1c s\u01a1 \u0111\u1ed3 ph\u1ee9c t\u1ea1p. T\u00ednh n\u0103ng k\u00e9o v\u00e0 th\u1ea3 c\u00f9ng c\u00e1c m\u1eabu t\u00f9y ch\u1ec9nh gi\u00fap d\u1ec5 d\u00e0ng t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u h\u1ea5p d\u1eabn v\u1ec1 m\u1eb7t th\u1ecb gi\u00e1c. 3. 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Visual Paradigm Guides Vietnamese","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow\/","og_locale":"vi_VN","og_type":"article","og_title":"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): L\u00e0m s\u00e1ng t\u1ecf lu\u1ed3ng th\u00f4ng tin - Visual Paradigm Guides Vietnamese","og_description":"Gi\u1edbi thi\u1ec7u Vi\u1ec7c \u0111i qua m\u00ea cung c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi m\u1ed9t ng\u1ecdn \u0111\u00e8n soi s\u00e1ng, v\u00e0 \u0111\u00f3 ch\u00ednh l\u00e0 n\u01a1i m\u00e0S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u(DFD) ph\u00e1t huy t\u00e1c d\u1ee5ng. Trong h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y, ch\u00fang t\u00f4i s\u1ebd \u0111i s\u00e2u v\u00e0o b\u1ea3n ch\u1ea5t c\u1ee7a DFD, cung c\u1ea5p kh\u00f4ng ch\u1ec9 c\u00e1c v\u00ed d\u1ee5 m\u00e0 c\u00f2n m\u1ed9t kh\u00e1m ph\u00e1 chi ti\u1ebft v\u1ec1 c\u00e1c th\u00e0nh ph\u1ea7n, quy t\u1eafc, \u01b0u \u0111i\u1ec3m, nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 m\u1ed9t h\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc. Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): \u1ede b\u1ea3n ch\u1ea5t, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n trong m\u1ed9t h\u1ec7 th\u1ed1ng. N\u00f3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t b\u1ea3n \u0111\u1ed3 \u0111\u1ed9ng minh h\u1ecda \u0111\u1ea7u v\u00e0o, \u0111\u1ea7u ra, ngu\u1ed3n, l\u01b0u tr\u1eef v\u00e0 \u0111i\u1ec3m \u0111\u1ebfn c\u1ee7a d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng. C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a DFD bao g\u1ed3m: Quy tr\u00ecnh: \u0110\u00e2y l\u00e0 nh\u1eefng ho\u1ea1t \u0111\u1ed9ng c\u1ed1t l\u00f5i trong h\u1ec7 th\u1ed1ng, t\u1eeb c\u00e1c nhi\u1ec7m v\u1ee5 \u0111\u01a1n gi\u1ea3n nh\u01b0 thu th\u1eadp d\u1eef li\u1ec7u \u0111\u1ebfn c\u00e1c quy tr\u00ecnh ph\u1ee9c t\u1ea1p nh\u01b0 t\u1ea1o b\u00e1o c\u00e1o to\u00e0n di\u1ec7n. C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i: \u0110\u00e2y l\u00e0 c\u00e1c ngu\u1ed3n ho\u1eb7c \u0111i\u1ec3m \u0111\u1ebfn c\u1ee7a th\u00f4ng tin t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng, bao g\u1ed3m c\u00e1 nh\u00e2n, t\u1ed5 ch\u1ee9c, m\u00e1y t\u00ednh ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c. C\u00e1c kho d\u1eef li\u1ec7u: C\u00e1c kho l\u01b0u tr\u1eef n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef, \u0111\u1ea1i di\u1ec7n cho th\u00f4ng tin \u1edf tr\u1ea1ng th\u00e1i t\u0129nh v\u00e0 kh\u00f4ng \u0111ang di chuy\u1ec3n. C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u: Ch\u00fang minh h\u1ecda s\u1ef1 di chuy\u1ec3n c\u1ee7a d\u1eef li\u1ec7u gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i, kho d\u1eef li\u1ec7u v\u00e0 c\u00e1c quy tr\u00ecnh, b\u1ea3n \u0111\u1ed3 h\u00f3a c\u00e1c h\u00e0nh tr\u00ecnh m\u00e0 d\u1eef li\u1ec7u \u0111i qua trong h\u1ec7 th\u1ed1ng. C\u00e1c k\u00fd hi\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong DFD: \u0110\u1ec3 l\u00e0m s\u1ed1ng \u0111\u1ed9ng c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a DFD, c\u00e1c k\u00fd hi\u1ec7u nh\u01b0 h\u1ec7 th\u1ed1ng Yourdon v\u00e0 Coad \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c t\u1ea1o v\u00e0 hi\u1ec3u c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y. C\u00e1c quy t\u1eafc v\u00e0 h\u01b0\u1edbng d\u1eabn \u0111\u1ec3 t\u1ea1o DFD: Vi\u1ec7c t\u1ea1o ra m\u1ed9t s\u01a1 \u0111\u1ed3 DFD m\u1ea1ch l\u1ea1c v\u00e0 d\u1ec5 hi\u1ec3u \u0111\u00f2i h\u1ecfi tu\u00e2n th\u1ee7 m\u1ed9t s\u1ed1 quy t\u1eafc: Lu\u1ed3ng quy tr\u00ecnh: M\u1ed7i quy tr\u00ecnh ph\u1ea3i c\u00f3 \u00edt nh\u1ea5t m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u ra v\u00e0 m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o. K\u1ebft n\u1ed1i kho d\u1eef li\u1ec7u: C\u00e1c kho d\u1eef li\u1ec7u ph\u1ea3i c\u00f3 \u00edt nh\u1ea5t m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o v\u00e0 m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u ra. Li\u00ean k\u1ebft th\u1ef1c th\u1ec3 &#8211; quy tr\u00ecnh: C\u00e1c th\u1ef1c th\u1ec3 ph\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t quy tr\u00ecnh th\u00f4ng qua m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u. Tr\u00e1nh giao nhau: C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u kh\u00f4ng \u0111\u01b0\u1ee3c giao nhau v\u1edbi nhau. Truy c\u1eadp th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i: C\u00e1c kho d\u1eef li\u1ec7u kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. \u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a DFD: Hi\u1ec3u r\u00f5 c\u00e1c \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a DFD l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft: \u01afu \u0111i\u1ec3m: \u0110\u01a1n gi\u1ea3n v\u1ec1 m\u1eb7t h\u00ecnh \u1ea3nh:M\u1ed9t k\u1ef9 thu\u1eadt tr\u1ef1c quan d\u1ec5 hi\u1ec3u, d\u1ec5 cho c\u00e1c b\u00ean li\u00ean quan v\u00e0 ng\u01b0\u1eddi d\u00f9ng n\u1eafm b\u1eaft. G\u00f3c nh\u00ecn chi ti\u1ebft:Cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng. Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng:Minh h\u1ecda s\u1ef1 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng, th\u1ec3 hi\u1ec7n c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau. Gi\u00e1 tr\u1ecb t\u00e0i li\u1ec7u h\u00f3a:Ph\u1ee5c v\u1ee5 nh\u01b0 m\u1ed9t ph\u1ea7n c\u00f3 gi\u00e1 tr\u1ecb trong t\u00e0i li\u1ec7u h\u1ec7 th\u1ed1ng. Nh\u01b0\u1ee3c \u0111i\u1ec3m: T\u1ed1n th\u1eddi gian:Vi\u1ec7c t\u1ea1o DFD c\u00f3 th\u1ec3 t\u1ed1n nhi\u1ec1u th\u1eddi gian. Kho\u1ea3ng tr\u1ed1ng th\u00f4ng tin v\u1ec1 th\u1eddi gian:Thi\u1ebfu th\u00f4ng tin v\u1ec1 th\u1eddi gian, th\u1ee9 t\u1ef1 v\u00e0 \u0111\u1ed3ng b\u1ed9 h\u00f3a c\u1ee7a c\u00e1c qu\u00e1 tr\u00ecnh. Th\u00e1ch th\u1ee9c \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng chuy\u00ean:C\u00f3 th\u1ec3 g\u00e2y kh\u00f3 kh\u0103n cho ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng chuy\u00ean trong vi\u1ec7c hi\u1ec3u s\u01a1 \u0111\u1ed3. V\u00ed d\u1ee5 v\u1ec1 DFD: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ng\u1eef c\u1ea3nh (M\u1ee9c 0): T\u1ed5ng quan c\u1ea5p cao n\u00e0y s\u1eed d\u1ee5ng m\u1ed9t qu\u00e1 tr\u00ecnh duy nh\u1ea5t \u0111\u1ec3 bi\u1ec3u di\u1ec5n to\u00e0n b\u1ed9 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. M\u1ed9t v\u00ed d\u1ee5 v\u1ec1 H\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng qu\u1ea7n \u00e1o \u0111\u01b0\u1ee3c minh h\u1ecda b\u00ean d\u01b0\u1edbi: C\u00e1c b\u01b0\u1edbc t\u1ea1o s\u01a1 \u0111\u1ed3 DFD ng\u1eef c\u1ea3nh: X\u00e1c \u0111\u1ecbnh qu\u00e1 tr\u00ecnh. T\u1ea1o danh s\u00e1ch c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. Li\u1ec7t k\u00ea c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u. V\u1ebd s\u01a1 \u0111\u1ed3. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1: Ph\u00e2n t\u00edch qu\u00e1 tr\u00ecnh ch\u00ednh th\u00e0nh c\u00e1c qu\u00e1 tr\u00ecnh con v\u00e0 bao g\u1ed3m c\u00e1c kho d\u1eef li\u1ec7u, s\u01a1 \u0111\u1ed3 DFD c\u1ea5p 1 cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft h\u01a1n. V\u00ed d\u1ee5: C\u00e1c b\u01b0\u1edbc t\u1ea1o s\u01a1 \u0111\u1ed3 DFD c\u1ea5p 1: X\u00e1c \u0111\u1ecbnh c\u00e1c qu\u00e1 tr\u00ecnh (qu\u00e1 tr\u00ecnh ch\u00ednh v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh con). Li\u1ec7t k\u00ea c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. Li\u1ec7t k\u00ea c\u00e1c kho d\u1eef li\u1ec7u. Li\u1ec7t k\u00ea c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u. V\u1ebd s\u01a1 \u0111\u1ed3. T\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: Visual Paradigm l\u00e0 l\u1ef1a ch\u1ecdn tuy\u1ec7t v\u1eddi \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) nh\u1edd v\u00e0o t\u00ednh linh ho\u1ea1t, giao di\u1ec7n th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng v\u00e0 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng tr\u00ean c\u1ea3 phi\u00ean b\u1ea3n tr\u1ef1c tuy\u1ebfn v\u00e0 m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 l\u00fd do v\u00ec sao Visual Paradigm n\u1ed5i b\u1eadt nh\u01b0 m\u1ed9t g\u1ee3i \u00fd h\u00e0ng \u0111\u1ea7u: Visual Paradigm: C\u00f4ng c\u1ee5 DFD to\u00e0n di\u1ec7n 1. T\u00ednh linh ho\u1ea1t: Visual Paradigm h\u1ed7 tr\u1ee3 nhi\u1ec1u lo\u1ea1i s\u01a1 \u0111\u1ed3 kh\u00e1c nhau, tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p to\u00e0n di\u1ec7n cho nhi\u1ec1u nhu c\u1ea7u m\u00f4 h\u00ecnh h\u00f3a tr\u1ef1c quan. T\u1eeb s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ebfn s\u01a1 \u0111\u1ed3 UML, n\u00f3 bao ph\u1ee7 m\u1ed9t ph\u1ea1m vi \u0111a d\u1ea1ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 v\u1ebd s\u01a1 \u0111\u1ed3. 2. Giao di\u1ec7n th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng: D\u00f9 b\u1ea1n l\u00e0 chuy\u00ean gia c\u00f3 kinh nghi\u1ec7m hay ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u, Visual Paradigm cung c\u1ea5p giao di\u1ec7n tr\u1ef1c quan gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh t\u1ea1o c\u00e1c s\u01a1 \u0111\u1ed3 ph\u1ee9c t\u1ea1p. T\u00ednh n\u0103ng k\u00e9o v\u00e0 th\u1ea3 c\u00f9ng c\u00e1c m\u1eabu t\u00f9y ch\u1ec9nh gi\u00fap d\u1ec5 d\u00e0ng t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u h\u1ea5p d\u1eabn v\u1ec1 m\u1eb7t th\u1ecb gi\u00e1c. 3. Phi\u00ean b\u1ea3n tr\u1ef1c tuy\u1ebfn v\u00e0 m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n: Visual Paradigm cung c\u1ea5p s\u1ef1 linh ho\u1ea1t v\u1edbi c\u1ea3 haiH\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): L\u00e0m s\u00e1ng t\u1ecf lu\u1ed3ng th\u00f4ng tin","og_url":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow\/","og_site_name":"Visual Paradigm Guides Vietnamese","article_published_time":"2026-02-04T10:17:47+00:00","og_image":[{"url":"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/10\/18-context-dfd-example.png","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_misc":{"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi":"vpadmin","\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"6 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow\/#article","isPartOf":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow\/"},"headline":"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): L\u00e0m s\u00e1ng t\u1ecf lu\u1ed3ng th\u00f4ng tin","datePublished":"2026-02-04T10:17:47+00:00","mainEntityOfPage":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow\/"},"wordCount":2688,"commentCount":0,"image":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow\/#primaryimage"},"thumbnailUrl":"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/10\/18-context-dfd-example.png","articleSection":["DFD"],"inLanguage":"vi","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow\/","url":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-dfd-demystifying-information-flow\/","name":"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): L\u00e0m s\u00e1ng t\u1ecf lu\u1ed3ng th\u00f4ng tin - 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