{"id":925,"date":"2026-02-25T18:41:14","date_gmt":"2026-02-25T18:41:14","guid":{"rendered":"https:\/\/www.method-post.com\/vi\/comprehensive-tutorial-on-data-flow-diagrams-dfd-using-top-down-decomposition-technique\/"},"modified":"2026-02-25T18:41:14","modified_gmt":"2026-02-25T18:41:14","slug":"comprehensive-tutorial-on-data-flow-diagrams-dfd-using-top-down-decomposition-technique","status":"publish","type":"post","link":"https:\/\/www.method-post.com\/vi\/comprehensive-tutorial-on-data-flow-diagrams-dfd-using-top-down-decomposition-technique\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) s\u1eed d\u1ee5ng k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch theo ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n c\u1ea5p t\u1eeb tr\u00ean xu\u1ed1ng"},"content":{"rendered":"<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p dir=\"auto\">Trong l\u0129nh v\u1ef1c ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n qua h\u1ec7 th\u1ed1ng l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3, \u0111\u1ed9 tin c\u1eady v\u00e0 an to\u00e0n. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u00f4ng c\u1ee5 tr\u1ef1c quan \u0111\u1ec3 m\u00f4 t\u1ea3 c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u n\u00e0y, cung c\u1ea5p h\u00ecnh \u1ea3nh r\u00f5 r\u00e0ng v\u1ec1 c\u00e1ch th\u00f4ng tin \u0111\u01b0\u1ee3c x\u1eed l\u00fd v\u00e0 l\u01b0u tr\u1eef b\u00ean trong h\u1ec7 th\u1ed1ng. K\u1ef9 thu\u1eadt ph\u00e2n t\u00edch theo ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n c\u1ea5p t\u1eeb tr\u00ean xu\u1ed1ng l\u00e0 m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn h\u1ec7 th\u1ed1ng \u0111\u1ec3 t\u1ea1o ra DFD, gi\u00fap c\u00e1c nh\u00e0 ph\u00e2n t\u00edch chia nh\u1ecf c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c th\u00e0nh ph\u1ea7n d\u1ec5 qu\u1ea3n l\u00fd. H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd d\u1eabn d\u1eaft b\u1ea1n qua c\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh v\u1ec1 DFD, quy tr\u00ecnh ph\u00e2n t\u00edch theo ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n c\u1ea5p t\u1eeb tr\u00ean xu\u1ed1ng, v\u00e0 c\u00e1c m\u1eb9o th\u1ef1c t\u1ebf \u0111\u1ec3 t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 hi\u1ec7u qu\u1ea3. Khi k\u1ebft th\u00fac, b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c trang b\u1ecb ki\u1ebfn th\u1ee9c c\u1ea7n thi\u1ebft \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a h\u1ec7 th\u1ed1ng m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c v\u00e0 hi\u1ec3u s\u00e2u v\u1ec1 c\u01a1 ch\u1ebf x\u1eed l\u00fd d\u1eef li\u1ec7u c\u1ee7a ch\u00fang.<\/p>\n<h2>C\u00e1c kh\u00e1i ni\u1ec7m ch\u00ednh<\/h2>\n<p><img alt=\"DFD Tutorial: Yourdon Notation\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/servlet\/editor-content\/knowledge\/software-design\/dfd-\/sites\/7\/2020\/03\/dfd-notation-comparison.png\"\/><\/p>\n<h3>1.\u00a0<strong>C\u00e1c th\u1ef1c th\u1ec3<\/strong><\/h3>\n<p dir=\"auto\">C\u00e1c th\u1ef1c th\u1ec3 l\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i, c\u00e1 nh\u00e2n ho\u1eb7c thi\u1ebft b\u1ecb t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng \u0111ang \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh h\u00f3a. Ch\u00fang \u0111\u00f3ng vai tr\u00f2 l\u00e0 ngu\u1ed3n ho\u1eb7c \u0111i\u1ec3m \u0111\u1ebfn c\u1ee7a d\u1eef li\u1ec7u.<\/p>\n<h3>2.\u00a0<strong>C\u00e1c qu\u00e1 tr\u00ecnh<\/strong><\/h3>\n<p dir=\"auto\">C\u00e1c qu\u00e1 tr\u00ecnh l\u00e0 c\u00e1c ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c thao t\u00e1c bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u b\u00ean trong h\u1ec7 th\u1ed1ng. Ch\u00fang nh\u1eadn \u0111\u1ea7u v\u00e0o, x\u1eed l\u00fd v\u00e0 t\u1ea1o ra \u0111\u1ea7u ra.<\/p>\n<h3>3.\u00a0<strong>C\u00e1c kho d\u1eef li\u1ec7u<\/strong><\/h3>\n<p dir=\"auto\">C\u00e1c kho d\u1eef li\u1ec7u l\u00e0 n\u01a1i l\u01b0u tr\u1eef d\u1eef li\u1ec7u \u0111\u1ec3 s\u1eed d\u1ee5ng trong t\u01b0\u01a1ng lai. Ch\u00fang c\u00f3 th\u1ec3 l\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u, t\u1ec7p tin ho\u1eb7c b\u1ea5t k\u1ef3 h\u00ecnh th\u1ee9c l\u01b0u tr\u1eef n\u00e0o kh\u00e1c.<\/p>\n<h3>4.\u00a0<strong>C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u<\/strong><\/h3>\n<p dir=\"auto\">C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u bi\u1ec3u di\u1ec5n s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3, qu\u00e1 tr\u00ecnh v\u00e0 kho d\u1eef li\u1ec7u. Ch\u00fang \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng c\u00e1c m\u0169i t\u00ean k\u1ebft n\u1ed1i c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y.<\/p>\n<h3>5.\u00a0<strong>S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh<\/strong><\/h3>\n<p dir=\"auto\">S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh l\u00e0 DFD c\u1ea5p cao nh\u1ea5t, cung c\u1ea5p c\u00e1i nh\u00ecn t\u1ed5ng quan r\u1ed9ng v\u1ec1 h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c c\u1ee7a n\u00f3 v\u1edbi c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i.<\/p>\n<h3>6.\u00a0<strong>C\u00e1c c\u1ea5p \u0111\u1ed9 ph\u00e2n t\u00edch<\/strong><\/h3>\n<p dir=\"auto\">C\u00e1c DFD th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch th\u00e0nh nhi\u1ec1u c\u1ea5p \u0111\u1ed9, v\u1edbi m\u1ed7i c\u1ea5p \u0111\u1ed9 cung c\u1ea5p th\u00f4ng tin chi ti\u1ebft h\u01a1n v\u1ec1 c\u00e1c qu\u00e1 tr\u00ecnh \u1edf c\u1ea5p \u0111\u1ed9 tr\u00ean.<\/p>\n<h2>K\u1ef9 thu\u1eadt ph\u00e2n t\u00edch theo ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n c\u1ea5p t\u1eeb tr\u00ean xu\u1ed1ng<\/h2>\n<p dir=\"auto\">K\u1ef9 thu\u1eadt ph\u00e2n t\u00edch theo ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n c\u1ea5p t\u1eeb tr\u00ean xu\u1ed1ng bao g\u1ed3m vi\u1ec7c b\u1eaft \u0111\u1ea7u t\u1eeb m\u1ed9t c\u00e1i nh\u00ecn c\u1ea5p cao v\u1ec1 h\u1ec7 th\u1ed1ng (s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh) v\u00e0 d\u1ea7n d\u1ea7n chia nh\u1ecf th\u00e0nh c\u00e1c c\u1ea5p \u0111\u1ed9 chi ti\u1ebft h\u01a1n. M\u1ed7i c\u1ea5p \u0111\u1ed9 cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft h\u01a1n v\u1ec1 c\u00e1c qu\u00e1 tr\u00ecnh v\u00e0 lu\u1ed3ng d\u1eef li\u1ec7u b\u00ean trong h\u1ec7 th\u1ed1ng.<\/p>\n<p dir=\"auto\"><img alt=\"DFD Tutorial: Yourdon Notation\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/servlet\/editor-content\/knowledge\/software-design\/dfd-tutorial-yourdon-notation\/sites\/7\/2020\/03\/dfd-top-down-decomposition.png\"\/><\/p>\n<h3>H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc<\/h3>\n<ol>\n<li>\n<p dir=\"auto\"><strong>T\u1ea1o s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh (c\u1ea5p \u0111\u1ed9 0)<\/strong><\/p>\n<ul>\n<li>X\u00e1c \u0111\u1ecbnh h\u1ec7 th\u1ed1ng ch\u00ednh v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c c\u1ee7a n\u00f3 v\u1edbi c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i.<\/li>\n<li>V\u1ebd h\u1ec7 th\u1ed1ng d\u01b0\u1edbi d\u1ea1ng m\u1ed9t qu\u00e1 tr\u00ecnh duy nh\u1ea5t v\u00e0 k\u1ebft n\u1ed1i n\u00f3 v\u1edbi c\u00e1c th\u1ef1c th\u1ec3 b\u1eb1ng c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u.<\/li>\n<li>V\u00ed d\u1ee5: Trong h\u00ecnh \u1ea3nh, s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh cho th\u1ea5y h\u1ec7 th\u1ed1ng t\u01b0\u01a1ng t\u00e1c v\u1edbi ba th\u1ef1c th\u1ec3.<\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>Ph\u00e2n t\u00edch xu\u1ed1ng c\u1ea5p \u0111\u1ed9 1<\/strong><\/p>\n<ul>\n<li>Ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng ch\u00ednh th\u00e0nh c\u00e1c qu\u00e1 tr\u00ecnh con ch\u00ednh.<\/li>\n<li>X\u00e1c \u0111\u1ecbnh c\u00e1c kho d\u1eef li\u1ec7u v\u00e0 lu\u1ed3ng d\u1eef li\u1ec7u gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh con v\u00e0 c\u00e1c th\u1ef1c th\u1ec3.<\/li>\n<li>V\u00ed d\u1ee5: Trong h\u00ecnh \u1ea3nh, c\u1ea5p \u0111\u1ed9 1 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng th\u00e0nh Quy tr\u00ecnh 1, Quy tr\u00ecnh 2 v\u00e0 Quy tr\u00ecnh 3, m\u1ed7i quy tr\u00ecnh t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c th\u1ef1c th\u1ec3 v\u00e0 kho d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>Ph\u00e2n t\u00edch s\u00e2u h\u01a1n (c\u1ea5p \u0111\u1ed9 2 v\u00e0 c\u00e1c c\u1ea5p \u0111\u1ed9 ti\u1ebfp theo)<\/strong><\/p>\n<ul>\n<li>Ti\u1ebfp t\u1ee5c ph\u00e2n t\u00edch t\u1eebng qu\u00e1 tr\u00ecnh con th\u00e0nh c\u00e1c qu\u00e1 tr\u00ecnh chi ti\u1ebft h\u01a1n cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee9c \u0111\u1ed9 chi ti\u1ebft mong mu\u1ed1n.<\/li>\n<li>\u0110\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed7i qu\u00e1 tr\u00ecnh \u1edf c\u1ea5p \u0111\u1ed9 th\u1ea5p h\u01a1n l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n chi ti\u1ebft h\u01a1n c\u1ee7a m\u1ed9t qu\u00e1 tr\u00ecnh \u1edf c\u1ea5p \u0111\u1ed9 cao h\u01a1n.<\/li>\n<li>V\u00ed d\u1ee5: Trong h\u00ecnh \u1ea3nh, Quy tr\u00ecnh 2 \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch s\u00e2u h\u01a1n th\u00e0nh Quy tr\u00ecnh 2.1 v\u00e0 Quy tr\u00ecnh 2.2, m\u1ed7i quy tr\u00ecnh c\u00f3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 t\u01b0\u01a1ng t\u00e1c ri\u00eang.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2>M\u1eb9o v\u00e0 th\u1ee7 thu\u1eadt<\/h2>\n<ul>\n<li><strong>B\u1eaft \u0111\u1ea7u \u0111\u01a1n gi\u1ea3n<\/strong>: B\u1eaft \u0111\u1ea7u b\u1eb1ng s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ea7n th\u00eam chi ti\u1ebft khi ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>T\u00ednh nh\u1ea5t qu\u00e1n<\/strong>: \u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 qu\u00e1 tr\u00ecnh nh\u1ea5t qu\u00e1n \u1edf c\u00e1c c\u1ea5p \u0111\u1ed9 ph\u00e2n t\u00edch kh\u00e1c nhau.<\/li>\n<li><strong>T\u1ed1i \u01b0u h\u00f3a l\u1eb7p l\u1ea1i<\/strong>: T\u1ed1i \u01b0u h\u00f3a c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u theo t\u1eebng b\u01b0\u1edbc d\u1ef1a tr\u00ean ph\u1ea3n h\u1ed3i v\u00e0 th\u00f4ng tin b\u1ed5 sung.<\/li>\n<li><strong>S\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n<\/strong>: S\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n cho c\u00e1c th\u1ef1c th\u1ec3, qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u v\u00e0 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ec3 duy tr\u00ec s\u1ef1 r\u00f5 r\u00e0ng v\u00e0 nh\u1ea5t qu\u00e1n.<\/li>\n<li><strong>T\u00e0i li\u1ec7u h\u00f3a c\u00e1c gi\u1ea3 \u0111\u1ecbnh<\/strong>: Ghi r\u00f5 c\u00e1c gi\u1ea3 \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111\u01b0a ra trong qu\u00e1 tr\u00ecnh t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ec3 tr\u00e1nh hi\u1ec3u nh\u1ea7m.<\/li>\n<\/ul>\n<h2>H\u01b0\u1edbng d\u1eabn<\/h2>\n<ul>\n<li><strong>S\u1ef1 r\u00f5 r\u00e0ng v\u00e0 \u0111\u01a1n gi\u1ea3n<\/strong>: H\u01b0\u1edbng \u0111\u1ebfn s\u1ef1 r\u00f5 r\u00e0ng v\u00e0 \u0111\u01a1n gi\u1ea3n trong s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n. Tr\u00e1nh l\u00e0m ph\u1ee9c t\u1ea1p h\u00f3a c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u.<\/li>\n<li><strong>X\u00e1c minh<\/strong>: X\u00e1c minh c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u1edbi c\u00e1c b\u00ean li\u00ean quan \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u00fang ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>T\u00ednh module<\/strong>: \u0110\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed7i qu\u00e1 tr\u00ecnh l\u00e0 m\u1ed9t module v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c hi\u1ec3u \u0111\u1ed9c l\u1eadp v\u1edbi c\u00e1c qu\u00e1 tr\u00ecnh kh\u00e1c.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng truy xu\u1ea5t<\/strong>: Duy tr\u00ec kh\u1ea3 n\u0103ng truy xu\u1ea5t gi\u1eefa c\u00e1c c\u1ea5p \u0111\u1ed9 ph\u00e2n t\u00edch kh\u00e1c nhau \u0111\u1ec3 h\u1ed7 tr\u1ee3 vi\u1ec7c \u0111i\u1ec1u h\u01b0\u1edbng v\u00e0 hi\u1ec3u r\u00f5 d\u1ec5 d\u00e0ng.<\/li>\n<\/ul>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p dir=\"auto\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u, khi \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng b\u1eb1ng k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch t\u1eeb tr\u00ean xu\u1ed1ng, cung c\u1ea5p m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac v\u00e0 to\u00e0n di\u1ec7n \u0111\u1ec3 hi\u1ec3u v\u00e0 ph\u00e2n t\u00edch c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u trong m\u1ed9t h\u1ec7 th\u1ed1ng. B\u1eaft \u0111\u1ea7u t\u1eeb s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh c\u1ea5p cao v\u00e0 d\u1ea7n ph\u00e2n t\u00edch s\u00e2u th\u00e0nh c\u00e1c c\u1ea5p \u0111\u1ed9 chi ti\u1ebft, b\u1ea1n c\u00f3 th\u1ec3 n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c nh\u1eefng chi ti\u1ebft ph\u1ee9c t\u1ea1p trong x\u1eed l\u00fd v\u00e0 l\u01b0u tr\u1eef d\u1eef li\u1ec7u. Tu\u00e2n theo c\u00e1c h\u01b0\u1edbng d\u1eabn v\u00e0 m\u1eb9o \u0111\u01b0\u1ee3c cung c\u1ea5p trong h\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd gi\u00fap b\u1ea1n t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u r\u00f5 r\u00e0ng, nh\u1ea5t qu\u00e1n v\u00e0 hi\u1ec7u qu\u1ea3. D\u00f9 b\u1ea1n l\u00e0 m\u1ed9t nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng, nh\u00e0 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m hay m\u1ed9t b\u00ean li\u00ean quan trong doanh nghi\u1ec7p, vi\u1ec7c th\u00e0nh th\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u s\u1ebd n\u00e2ng cao kh\u1ea3 n\u0103ng thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng v\u1eefng ch\u1eafc v\u00e0 \u0111\u1ea3m b\u1ea3o c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o m\u1eadt. H\u00e3y n\u1eafm b\u1eaft s\u1ee9c m\u1ea1nh c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ec3 kh\u00e1m ph\u00e1 s\u00e2u s\u1eafc h\u01a1n v\u1ec1 h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n v\u00e0 th\u00fac \u0111\u1ea9y ra quy\u1ebft \u0111\u1ecbnh c\u00f3 c\u01a1 s\u1edf.<\/p>\n<p dir=\"auto\">\n<h2 dir=\"auto\">T\u00e0i li\u1ec7u tham kh\u1ea3o v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/h2>\n<ol>\n<li>\n<p dir=\"auto\"><strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u Visual Paradigm \u2013 Stack Overflow<\/strong><\/p>\n<ul>\n<li>Tr\u00ecnh b\u00e0y v\u1ec1 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong c\u00e1c phi\u00ean b\u1ea3n kh\u00e1c nhau c\u1ee7a Visual Paradigm, bao g\u1ed3m vi\u1ec7c c\u1ea7n c\u00f3 phi\u00ean b\u1ea3n Modeler ho\u1eb7c cao h\u01a1n \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD).<\/li>\n<li><a href=\"https:\/\/stackoverflow.com\/questions\/41533195\/visual-paradigm-data-flow-diagrams\">\u0110\u1ecdc th\u00eam tr\u00ean Stack Overflow<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>C\u00f4ng c\u1ee5 t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u tr\u1ef1c tuy\u1ebfn<\/strong><\/p>\n<ul>\n<li>M\u1ed9t c\u00f4ng c\u1ee5 tr\u1ef1c tuy\u1ebfn \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u nhanh ch\u00f3ng v\u00e0 hi\u1ec7u qu\u1ea3, v\u1edbi c\u00e1c t\u00ednh n\u0103ng chia s\u1ebb s\u01a1 \u0111\u1ed3 d\u01b0\u1edbi nhi\u1ec1u \u0111\u1ecbnh d\u1ea1ng kh\u00e1c nhau.<\/li>\n<li><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/dfd-maker\/\">Kh\u00e1m ph\u00e1 c\u00f4ng c\u1ee5 t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u tr\u1ef1c tuy\u1ebfn<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u b\u1eb1ng Visual Paradigm<\/strong><\/p>\n<ul>\n<li>Cung c\u1ea5p h\u01b0\u1edbng d\u1eabn chi ti\u1ebft v\u1ec1 vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) b\u1eb1ng Visual Paradigm, bao g\u1ed3m t\u00ednh n\u0103ng k\u00e9o v\u00e0 th\u1ea3 cho c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh.<\/li>\n<li><a href=\"https:\/\/guides.visual-paradigm.com\/a-step-by-step-guide-to-creating-data-flow-diagrams-with-visual-paradigm\/\">Truy c\u1eadp h\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>C\u00f4ng c\u1ee5 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u2013 Visual Paradigm<\/strong><\/p>\n<ul>\n<li>Nh\u1ea5n m\u1ea1nh c\u00e1c t\u00ednh n\u0103ng c\u1ee7a c\u00f4ng c\u1ee5 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) c\u1ee7a Visual Paradigm, bao g\u1ed3m kh\u1ea3 n\u0103ng ph\u00e2n t\u00edch qu\u00e1 tr\u00ecnh v\u00e0 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n m\u00f4 h\u00ecnh \u1edf c\u00e1c c\u1ea5p \u0111\u1ed9 kh\u00e1c nhau.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/features\/data-flow-diagram-tool\/\">T\u00ecm hi\u1ec3u v\u1ec1 c\u00f4ng c\u1ee5 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/strong><\/p>\n<ul>\n<li>Gi\u1ea3i th\u00edch c\u1ea5u tr\u00fac v\u00e0 m\u1ee5c \u0111\u00edch c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD), nh\u1ea5n m\u1ea1nh vai tr\u00f2 c\u1ee7a ch\u00fang trong vi\u1ec7c tr\u1ef1c quan h\u00f3a lu\u1ed3ng d\u1eef li\u1ec7u b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/\">Hi\u1ec3u r\u00f5 v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong Visual Paradigm<\/strong><\/p>\n<ul>\n<li>Cung c\u1ea5p m\u1ed9t ch\u01b0\u01a1ng v\u1ec1 vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) b\u1eb1ng Visual Paradigm, bao g\u1ed3m c\u00e1c k\u00fd hi\u1ec7u \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 v\u00e0 c\u00e1c k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch qu\u00e1 tr\u00ecnh.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/support\/documents\/vpuserguide\/285\/2145_dataflowdiag.html\">\u0110\u1ecdc ch\u01b0\u01a1ng v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 v\u1ebd s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD)?<\/strong><\/p>\n<ul>\n<li>Cung c\u1ea5p h\u01b0\u1edbng d\u1eabn v\u1ebd s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD), bao g\u1ed3m c\u00e1ch ph\u00e2n t\u00edch qu\u00e1 tr\u00ecnh v\u00e0 qu\u1ea3n l\u00fd lu\u1ed3ng d\u1eef li\u1ec7u gi\u1eefa c\u00e1c c\u1ea5p \u0111\u1ed9 kh\u00e1c nhau.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/support\/documents\/vpuserguide\/285\/2145\/56977_creatingdata.html\">H\u1ecdc c\u00e1ch v\u1ebd s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/a>\u00a0<a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/www.visual-paradigm.com\/support\/documents\/vpuserguide\/285\/2145\/56977_creatingdata.html\" rel=\"noopener\" target=\"_blank\">7<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>Th\u00e0nh th\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u1edbi Visual Paradigm: H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc<\/strong><\/p>\n<ul>\n<li>M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 vi\u1ec7c th\u00e0nh th\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) b\u1eb1ng Visual Paradigm, v\u1edbi c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u00e0 m\u1eabu s\u1eb5n.<\/li>\n<li><a href=\"https:\/\/guides.visual-paradigm.com\/mastering-data-flow-diagrams-with-visual-paradigm-a-step-by-step-guide\/\">Truy c\u1eadp h\u01b0\u1edbng d\u1eabn th\u00e0nh th\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>M\u1eabu s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/strong><\/p>\n<ul>\n<li>Cung c\u1ea5p c\u00e1c m\u1eabu s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) tr\u1ef1c tuy\u1ebfn mi\u1ec5n ph\u00ed v\u00e0 c\u00e1c v\u00ed d\u1ee5 \u0111\u1ec3 gi\u00fap ng\u01b0\u1eddi d\u00f9ng t\u1ea1o c\u00e1c s\u01a1 \u0111\u1ed3 chuy\u00ean nghi\u1ec7p.<\/li>\n<li><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/\">Kh\u00e1m ph\u00e1 c\u00e1c m\u1eabu s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD)?<\/strong><\/p>\n<ul>\n<li>M\u1ed9t b\u00e0i h\u01b0\u1edbng d\u1eabn v\u1ec1 vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD), bao g\u1ed3m c\u00e1c b\u01b0\u1edbc ch\u1ecdn m\u1eabu v\u00e0 th\u00eam chi ti\u1ebft v\u00e0o s\u01a1 \u0111\u1ed3.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/tutorials\/how-to-create-data-flow-diagram\/\">Theo d\u00f5i H\u01b0\u1edbng d\u1eabn t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p dir=\"auto\">C\u00e1c t\u00e0i li\u1ec7u tham kh\u1ea3o n\u00e0y cung c\u1ea5p n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc \u0111\u1ec3 hi\u1ec3u v\u00e0 t\u1ea1o c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u b\u1eb1ng Visual Paradigm, v\u1edbi c\u00e1c t\u00e0i nguy\u00ean bao g\u1ed3m t\u1eeb c\u00e1c h\u01b0\u1edbng d\u1eabn c\u01a1 b\u1ea3n \u0111\u1ebfn c\u00e1c b\u00e0i h\u01b0\u1edbng d\u1eabn n\u00e2ng cao.<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gi\u1edbi thi\u1ec7u Trong l\u0129nh v\u1ef1c ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n qua h\u1ec7 th\u1ed1ng l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o&hellip;<\/p>\n","protected":false},"author":2,"featured_media":926,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","fifu_image_url":"https:\/\/online.visual-paradigm.com\/servlet\/editor-content\/knowledge\/software-design\/dfd-tutorial-yourdon-notation\/sites\/7\/2020\/03\/dfd-top-down-decomposition.png","fifu_image_alt":"","footnotes":""},"categories":[21],"tags":[],"class_list":["post-925","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-flowchart"],"yoast_head":"<!-- This site is optimized with 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