{"id":6390,"date":"2026-02-04T18:10:44","date_gmt":"2026-02-04T10:10:44","guid":{"rendered":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-in-software-engineering\/"},"modified":"2026-02-04T18:10:44","modified_gmt":"2026-02-04T10:10:44","slug":"comprehensive-guide-to-data-flow-diagrams-in-software-engineering","status":"publish","type":"post","link":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-in-software-engineering\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m"},"content":{"rendered":"<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p>Vi\u1ec7c \u0111i qua b\u1ee9c tranh ph\u1ee9c t\u1ea1p c\u1ee7a k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m \u0111\u00f2i h\u1ecfi nh\u1eefng c\u00f4ng c\u1ee5 c\u00f3 th\u1ec3 l\u00e0m r\u00f5 s\u1ef1 ph\u1ee9c t\u1ea1p. Trong s\u1ed1 c\u00e1c c\u00f4ng c\u1ee5 \u0111\u00f3, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) \u0111\u00f3ng vai tr\u00f2 n\u1ec1n t\u1ea3ng, cung c\u1ea5p b\u1ea3n \u0111\u1ed3 tr\u1ef1c quan \u0111\u1ec3 hi\u1ec3u r\u00f5 lu\u1ed3ng th\u00f4ng tin b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng. Trong h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y, ch\u00fang ta s\u1ebd c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng n\u1ec1n t\u1ea3ng, nguy\u00ean t\u1eafc v\u00e0 c\u00e1c c\u1ea5p \u0111\u1ed9 c\u1ea5u tr\u00fac c\u1ee7a DFD \u0111\u1ec3 trang b\u1ecb cho b\u1ea1n nh\u1eefng k\u1ef9 n\u0103ng c\u1ea7n thi\u1ebft \u0111\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu n\u00e0y trong thi\u1ebft k\u1ebf ph\u1ea7n m\u1ec1m.<\/p>\n<h3>B\u1ed9c l\u1ed9 b\u1ea3n ch\u1ea5t c\u1ee7a DFD<\/h3>\n<p>\u1ede c\u1ed1t l\u00f5i, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda ghi l\u1ea1i s\u1ef1 di chuy\u1ec3n v\u00e0 bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u trong m\u1ed9t h\u1ec7 th\u1ed1ng. D\u00f9 h\u1ec7 th\u1ed1ng l\u00e0 th\u1ee7 c\u00f4ng, t\u1ef1 \u0111\u1ed9ng hay k\u1ebft h\u1ee3p c\u1ea3 hai, m\u1ed9t s\u01a1 \u0111\u1ed3 DFD \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1ed1t s\u1ebd \u0111\u00f3ng vai tr\u00f2 nh\u01b0 la b\u00e0n, d\u1eabn d\u1eaft c\u00e1c b\u00ean li\u00ean quan qua nh\u1eefng chi ti\u1ebft ph\u1ee9c t\u1ea1p c\u1ee7a y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng.<\/p>\n<p><strong>M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a DFD:<\/strong><\/p>\n<ol>\n<li><strong>X\u00e1c \u0111\u1ecbnh ph\u1ea1m vi:<\/strong>X\u00e1c \u0111\u1ecbnh r\u00f5 ranh gi\u1edbi v\u00e0 ph\u1ea1m vi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>C\u00f4ng c\u1ee5 giao ti\u1ebfp:<\/strong>Th\u00fac \u0111\u1ea9y giao ti\u1ebfp hi\u1ec7u qu\u1ea3 gi\u1eefa c\u00e1c nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c b\u00ean li\u00ean quan.<\/li>\n<li><strong>N\u1ec1n t\u1ea3ng kh\u1edfi \u0111\u1ed9ng l\u1ea1i thi\u1ebft k\u1ebf:<\/strong>\u0110\u00f3ng vai tr\u00f2 l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u cho vi\u1ec7c thi\u1ebft k\u1ebf l\u1ea1i v\u00e0 c\u1ea3i ti\u1ebfn h\u1ec7 th\u1ed1ng.<\/li>\n<\/ol>\n<h3>Nguy\u00ean t\u1eafc h\u01b0\u1edbng d\u1eabn cho DFD hi\u1ec7u qu\u1ea3<\/h3>\n<p>\u0110\u1ec3 khai th\u00e1c t\u1ed1i \u0111a ti\u1ec1m n\u0103ng c\u1ee7a DFD, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 tu\u00e2n th\u1ee7 c\u00e1c nguy\u00ean t\u1eafc ch\u00ednh:<\/p>\n<ol>\n<li><strong>\u0110\u1eb7t t\u00ean ri\u00eang bi\u1ec7t:<\/strong>\u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n trong DFD c\u00f3 t\u00ean ri\u00eang bi\u1ec7t, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho s\u1ef1 r\u00f5 r\u00e0ng v\u00e0 ch\u00ednh x\u00e1c trong c\u00e1c tham chi\u1ebfu.<\/li>\n<li><strong>Ph\u00e2n bi\u1ec7t v\u1edbi s\u01a1 \u0111\u1ed3 d\u00f2ng ch\u1ea3y:<\/strong>Kh\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 d\u00f2ng ch\u1ea3y m\u00f4 t\u1ea3 tr\u00ecnh t\u1ef1 c\u00e1c s\u1ef1 ki\u1ec7n, DFD t\u1eadp trung v\u00e0o lu\u1ed3ng d\u1eef li\u1ec7u. C\u00e1c m\u0169i t\u00ean bi\u1ec3u th\u1ecb s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u, ch\u1ee9 kh\u00f4ng ph\u1ea3i th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n thao t\u00e1c.<\/li>\n<li><strong>Tr\u00e1nh c\u00e1c quy\u1ebft \u0111\u1ecbnh logic:<\/strong>Tr\u00e1nh s\u1eed d\u1ee5ng c\u00e1c \u0111i\u1ec3m quy\u1ebft \u0111\u1ecbnh h\u00ecnh thoi c\u00f3 trong s\u01a1 \u0111\u1ed3 d\u00f2ng ch\u1ea3y, v\u00ec DFD kh\u00f4ng quy \u0111\u1ecbnh th\u1ee9 t\u1ef1 r\u00f5 r\u00e0ng c\u1ee7a c\u00e1c s\u1ef1 ki\u1ec7n.<\/li>\n<li><strong>Chi ti\u1ebft \u0111\u01b0\u1ee3c ho\u00e3n l\u1ea1i:<\/strong>Ho\u00e3n l\u1ea1i c\u00e1c chi ti\u1ebft ph\u1ee9c t\u1ea1p, nh\u01b0 \u0111i\u1ec1u ki\u1ec7n l\u1ed7i v\u00e0 c\u00e1ch x\u1eed l\u00fd, \u0111\u1ebfn c\u00e1c giai \u0111o\u1ea1n sau c\u1ee7a ph\u00e2n t\u00edch \u0111\u1ec3 tr\u00e1nh b\u1ecb ch\u00ecm trong chi ti\u1ebft nh\u1ecf.<\/li>\n<\/ol>\n<h3>C\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n trong DFD<\/h3>\n<p>\u0110\u01b0\u1ee3c l\u1ea5y t\u1eeb ph\u00e2n t\u00edch s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n, DFD s\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n:<\/p>\n<ul>\n<li><strong>H\u00ecnh tr\u00f2n (Bong b\u00f3ng):<\/strong>Bi\u1ec3u di\u1ec5n m\u1ed9t qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o th\u00e0nh d\u1eef li\u1ec7u \u0111\u1ea7u ra.<\/li>\n<li><strong>\u0110\u01b0\u1eddng cong (Lu\u1ed3ng d\u1eef li\u1ec7u):<\/strong>Ch\u1ec9 ra s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u v\u00e0o ho\u1eb7c ra kh\u1ecfi m\u1ed9t qu\u00e1 tr\u00ecnh ho\u1eb7c kho d\u1eef li\u1ec7u.<\/li>\n<li><strong>Hai \u0111\u01b0\u1eddng song song (Kho d\u1eef li\u1ec7u):<\/strong>Ch\u1ec9 ra m\u1ed9t v\u1ecb tr\u00ed l\u01b0u tr\u1eef d\u1eef li\u1ec7u, c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u1ec3 s\u1eed d\u1ee5ng trong t\u01b0\u01a1ng lai b\u1edfi c\u00e1c qu\u00e1 tr\u00ecnh kh\u00e1c.<\/li>\n<li><strong>Ngu\u1ed3n ho\u1eb7c \u0111i\u1ec3m thu:<\/strong>C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i \u0111\u00f3ng vai tr\u00f2 l\u00e0 ngu\u1ed3n cung c\u1ea5p \u0111\u1ea7u v\u00e0o ho\u1eb7c \u0111i\u1ec3m \u0111\u1ebfn cho \u0111\u1ea7u ra.<\/li>\n<\/ul>\n<h3><a href=\"https:\/\/www.visual-paradigm.com\/tutorials\/leveled-dfd.jsp\">C\u1ea5p \u0111\u1ed9 trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/a>: C\u1ea5u tr\u00fac h\u00f3a \u0111\u1ed9 ph\u1ee9c t\u1ea1p<\/h3>\n<p>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c theo c\u00e1c c\u1ea5p \u0111\u1ed9, m\u1ed7i c\u1ea5p \u0111\u1ed9 g\u00f3p ph\u1ea7n v\u00e0o vi\u1ec7c hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 h\u1ec7 th\u1ed1ng theo t\u1eebng m\u1ee9c \u0111\u1ed9 chi ti\u1ebft h\u01a1n:<\/p>\n<ol>\n<li><strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 0 (M\u00f4 h\u00ecnh h\u1ec7 th\u1ed1ng c\u01a1 b\u1ea3n):<\/strong>\n<ul>\n<li>Tr\u00ecnh b\u00e0y to\u00e0n b\u1ed9 y\u00eau c\u1ea7u ph\u1ea7n m\u1ec1m trong m\u1ed9t v\u00f2ng tr\u00f2n duy nh\u1ea5t, th\u1ec3 hi\u1ec7n d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra.<\/li>\n<li>L\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 ph\u00e2n t\u00edch s\u00e2u h\u01a1n th\u00e0nh c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u chi ti\u1ebft h\u01a1n.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><img alt=\"receive order created\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/10\/08_receive_order_created.png\"\/><\/p>\n<ol>\n<li><strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1:<\/strong>\n<ul>\n<li>Chia nh\u1ecf s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh th\u00e0nh nhi\u1ec1u qu\u00e1 tr\u00ecnh, nh\u1ea5n m\u1ea1nh v\u00e0o c\u00e1c m\u1ee5c ti\u00eau ch\u00ednh v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh con c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><img alt=\"handle invalid order created\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/10\/09_handle_invalid_order_created.png\"\/><\/p>\n<ol>\n<li><strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 2:<\/strong>\n<ul>\n<li>\u0110i s\u00e2u h\u01a1n, cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft v\u1ec1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<li>Ghi l\u1ea1i c\u00e1c chi ti\u1ebft c\u1ee5 th\u1ec3 c\u1ea7n thi\u1ebft \u0111\u1ec3 hi\u1ec3u to\u00e0n di\u1ec7n.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><img alt=\"ship order created\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/10\/1_10_ship_order_created.png\"\/><\/p>\n<h3>K\u1ebft lu\u1eadn: Th\u00fac \u0111\u1ea9y ng\u00e0nh k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m<\/h3>\n<p>Khi b\u1ea1n b\u1eaft \u0111\u1ea7u h\u00e0nh tr\u00ecnh trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m, h\u00e3y xem s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u nh\u01b0 ng\u01b0\u1eddi b\u1ea1n \u0111\u1ed3ng h\u00e0nh \u0111\u00e1ng tin c\u1eady. Kh\u00f4ng ch\u1ec9 l\u00e0 c\u00f4ng c\u1ee5 tr\u1ef1c quan, ch\u00fang c\u00f2n l\u00e0 c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd cho giao ti\u1ebfp, ph\u00e2n t\u00edch v\u00e0 t\u00e1i thi\u1ebft k\u1ebf. V\u1edbi c\u00e1c nguy\u00ean t\u1eafc v\u00e0 k\u00fd hi\u1ec7u \u0111\u01b0\u1ee3c n\u00eau trong h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n \u0111\u00e3 n\u1eafm gi\u1eef ch\u00eca kh\u00f3a \u0111\u1ec3 kh\u00e1m ph\u00e1 b\u1ea3n ch\u1ea5t ph\u1ee9c t\u1ea1p c\u1ee7a lu\u1ed3ng d\u1eef li\u1ec7u trong m\u1ed9t h\u1ec7 th\u1ed1ng. H\u00e3y \u0111\u1ec3 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u tr\u1edf th\u00e0nh \u00e1nh s\u00e1ng d\u1eabn \u0111\u01b0\u1eddng cho b\u1ea1n trong th\u1ebf gi\u1edbi r\u1ed9ng l\u1edbn c\u1ee7a thi\u1ebft k\u1ebf v\u00e0 k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m.<\/p>\n<p><strong>Kh\u00e1m ph\u00e1 s\u1ee9c m\u1ea1nh c\u1ee7a vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u tr\u1ef1c tuy\u1ebfn v\u1edbi Visual Paradigm<\/strong><\/p>\n<p>M\u1edf kh\u00f3a ti\u1ec1m n\u0103ng t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) li\u1ec1n m\u1ea1ch v\u1edbi ph\u1ea7n m\u1ec1m DFD tr\u1ef1c tuy\u1ebfn c\u1ee7a Visual Paradigm. L\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m, DFD m\u00f4 t\u1ea3 tr\u1ef1c quan s\u1ef1 di chuy\u1ec3n ph\u1ee9c t\u1ea1p c\u1ee7a d\u1eef li\u1ec7u trong m\u1ed9t h\u1ec7 th\u1ed1ng th\u00f4ng tin doanh nghi\u1ec7p. Gi\u1edd \u0111\u00e2y, vi\u1ec7c v\u1ebd c\u00e1c s\u01a1 \u0111\u1ed3 DFD chuy\u00ean nghi\u1ec7p \u0111\u00e3 n\u1eb1m trong t\u1ea7m tay b\u1ea1n, nh\u1edd n\u1ec1n t\u1ea3ng tr\u1ef1c tuy\u1ebfn tr\u1ef1c quan c\u1ee7a Visual Paradigm.<\/p>\n<h3>T\u1ea1i sao n\u00ean ch\u1ecdn Visual Paradigm \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u?<\/h3>\n<ol>\n<li><strong>V\u1ebd tr\u1ef1c tuy\u1ebfn d\u1ec5 d\u00e0ng:<\/strong>\n<ul>\n<li>Truy c\u1eadp v\u00e0o s\u1ee9c m\u1ea1nh t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u m\u1ecdi l\u00fac, m\u1ecdi n\u01a1i v\u1edbi n\u1ec1n t\u1ea3ng tr\u1ef1c tuy\u1ebfn c\u1ee7a Visual Paradigm.<\/li>\n<li>Giao di\u1ec7n tr\u1ef1c quan \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m v\u1ebd m\u01b0\u1ee3t m\u00e0 v\u00e0 hi\u1ec7u qu\u1ea3.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tr\u1ef1c quan h\u00f3a d\u1eef li\u1ec7u to\u00e0n di\u1ec7n:<\/strong>\n<ul>\n<li>Tr\u1ef1c quan h\u00f3a s\u1ef1 chuy\u1ec3n giao li\u1ec1n m\u1ea1ch c\u1ee7a d\u1eef li\u1ec7u gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i.<\/li>\n<li>C\u00f3 c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 \u0111\u1ed9ng l\u1ef1c lu\u1ed3ng d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng th\u00f4ng tin doanh nghi\u1ec7p c\u1ee7a b\u1ea1n.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Nhi\u1ec1u n\u0103m kinh nghi\u1ec7m trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m:<\/strong>\n<ul>\n<li>S\u1eed d\u1ee5ng m\u1ed9t c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c t\u1ea1o n\u00ean b\u1edfi c\u00e1c chuy\u00ean gia trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m.<\/li>\n<li>\u0110\u1ed3ng b\u1ed9 h\u00f3a c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n t\u1ed1t nh\u1ea5t trong ng\u00e0nh m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng.<\/li>\n<\/ul>\n<\/li>\n<li><strong>K\u1ebft qu\u1ea3 ch\u1ea5t l\u01b0\u1ee3ng chuy\u00ean nghi\u1ec7p:<\/strong>\n<ul>\n<li>T\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u kh\u00f4ng ch\u1ec9 mang t\u00ednh th\u00f4ng tin m\u00e0 c\u00f2n \u0111\u01b0\u1ee3c ho\u00e0n thi\u1ec7n v\u00e0 chuy\u00ean nghi\u1ec7p.<\/li>\n<li>\u1ea4n t\u01b0\u1ee3ng v\u1edbi c\u00e1c b\u00ean li\u00ean quan v\u00e0 \u0111\u1ed3ng nghi\u1ec7p b\u1eb1ng c\u00e1c s\u01a1 \u0111\u1ed3 tr\u1ef1c quan h\u1ea5p d\u1eabn.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h3>L\u1ea5y c\u1ea3m h\u1ee9ng m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng<\/h3>\n<p>C\u1ea7n m\u1ed9t ng\u1ecdn l\u1eeda s\u00e1ng t\u1ea1o \u0111\u1ec3 b\u1eaft \u0111\u1ea7u t\u1ea1o ra s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n? Visual Paradigm cung c\u1ea5p m\u1ed9t b\u1ed9 s\u01b0u t\u1eadp c\u00e1c v\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u truy\u1ec1n c\u1ea3m h\u1ee9ng. Nh\u1ea5p v\u00e0o m\u1ed9t s\u01a1 \u0111\u1ed3 \u0111\u1ec3 xem chi ti\u1ebft, ho\u1eb7c nh\u1ea5n n\u00fat ch\u1ec9nh s\u1eeda \u0111\u1ec3 ngay l\u1eadp t\u1ee9c b\u1eaft \u0111\u1ea7u t\u00f9y ch\u1ec9nh. Nh\u1eefng v\u00ed d\u1ee5 n\u00e0y \u0111\u00f3ng vai tr\u00f2 l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u cho s\u1ef1 s\u00e1ng t\u1ea1o c\u1ee7a b\u1ea1n, cung c\u1ea5p nh\u1eefng hi\u1ec3u bi\u1ebft th\u1ef1c t\u1ebf v\u1ec1 nhi\u1ec1u \u1ee9ng d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u.<\/p>\n<h3>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 b\u1eaft \u0111\u1ea7u:<\/h3>\n<ol>\n<li><strong>Truy c\u1eadp n\u1ec1n t\u1ea3ng tr\u1ef1c tuy\u1ebfn c\u1ee7a Visual Paradigm:<\/strong>\n<ul>\n<li>Truy c\u1eadp ph\u1ea7n m\u1ec1m s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u tr\u1ef1c tuy\u1ebfn tr\u00ean trang web c\u1ee7a Visual Paradigm.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Kh\u00e1m ph\u00e1 c\u00e1c v\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u:<\/strong>\n<ul>\n<li>L\u01b0\u1edbt qua b\u1ed9 s\u01b0u t\u1eadp c\u00e1c v\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ec3 l\u1ea5y c\u1ea3m h\u1ee9ng.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Nh\u1ea5p v\u00e0 ch\u1ec9nh s\u1eeda:<\/strong>\n<ul>\n<li>Nh\u1ea5p v\u00e0o m\u1ed9t s\u01a1 \u0111\u1ed3 \u0111\u1ec3 xem n\u00f3, ho\u1eb7c nh\u1ea5n n\u00fat ch\u1ec9nh s\u1eeda \u0111\u1ec3 b\u1eaft \u0111\u1ea7u s\u00e1ng t\u1ea1o c\u1ee7a ri\u00eang b\u1ea1n.<\/li>\n<\/ul>\n<\/li>\n<li><strong>T\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n:<\/strong>\n<ul>\n<li>S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 v\u1ebd tr\u1ef1c quan \u0111\u1ec3 t\u1ea1o ra m\u1ed9t s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ph\u00f9 h\u1ee3p v\u1edbi nh\u1eefng chi ti\u1ebft ph\u1ee9c t\u1ea1p c\u1ee7a h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n.<\/li>\n<\/ul>\n<\/li>\n<li><strong>L\u01b0u v\u00e0 chia s\u1ebb:<\/strong>\n<ul>\n<li>L\u01b0u c\u00f4ng vi\u1ec7c c\u1ee7a b\u1ea1n tr\u1ef1c tuy\u1ebfn v\u00e0 d\u1ec5 d\u00e0ng chia s\u1ebb v\u1edbi \u0111\u1ed9i nh\u00f3m ho\u1eb7c c\u00e1c b\u00ean li\u00ean quan.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/dfd-maker\/\">Ph\u1ea7n m\u1ec1m s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u tr\u1ef1c tuy\u1ebfn c\u1ee7a Visual Paradigm<\/a>ph\u1ea7n m\u1ec1m gi\u00fap b\u1ea1n bi\u1ebfn c\u00e1c \u00fd t\u01b0\u1edfng v\u1ec1 lu\u1ed3ng d\u1eef li\u1ec7u th\u00e0nh nh\u1eefng s\u01a1 \u0111\u1ed3 tr\u1ef1c quan h\u1ea5p d\u1eabn. Tr\u1ea3i nghi\u1ec7m s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa thi\u1ebft k\u1ebf tr\u1ef1c quan v\u00e0 ch\u1ee9c n\u0103ng m\u1ea1nh m\u1ebd \u0111\u1ec3 n\u00e2ng cao quy tr\u00ecnh t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n. Khai ph\u00e1 ti\u1ec1m n\u0103ng c\u1ee7a vi\u1ec7c v\u1ebd s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u tr\u1ef1c tuy\u1ebfn v\u1edbi Visual Paradigm ngay h\u00f4m nay.<\/p>\n<h2>H\u1ecdc qua c\u00e1c v\u00ed d\u1ee5<\/h2>\n<div class=\"cl-preview-section\">\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/logical-data-flow-diagram-example-grocery-store\" title=\"Logical Data Flow Diagram Example: Grocery Store\"><img alt=\"Logical Data Flow Diagram Example: Grocery Store (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/17b473be-0da9-4364-ad58-1910f57014ea.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/17b473be-0da9-4364-ad58-1910f57014ea.xml&amp;name=Logical%20Data%20Flow%20Diagram%20Example:%20Grocery%20Store\">V\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u logic: C\u1eeda h\u00e0ng t\u1ea1p h\u00f3a<\/a><\/p>\n<\/div>\n<div class=\"cl-preview-section\">\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/bank-account-data-flow-diagram\" title=\"Bank Account Data Flow Diagram\"><img alt=\"Bank Account Data Flow Diagram (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/13fcf5a3-39b6-438b-9cfa-3741dc750a2d.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/13fcf5a3-39b6-438b-9cfa-3741dc750a2d.xml&amp;name=Bank%20Account%20Data%20Flow%20Diagram\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u t\u00e0i kho\u1ea3n ng\u00e2n h\u00e0ng<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/physical-data-flow-diagram-example-grocery-store\" title=\"Physical Data Flow Diagram Example: Grocery Store\"><img alt=\"Physical Data Flow Diagram Example: Grocery Store (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/00c294fb-3145-4708-bc8c-e3e2c42bdf14.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/00c294fb-3145-4708-bc8c-e3e2c42bdf14.xml&amp;name=Physical%20Data%20Flow%20Diagram%20Example:%20Grocery%20Store\">V\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u1eadt l\u00fd: C\u1eeda h\u00e0ng t\u1ea1p h\u00f3a<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-purchase-management-system\" title=\"Data Flow Diagram: Purchase Management System\"><img alt=\"Data Flow Diagram: Purchase Management System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/f80e2a07-ff3b-42f3-baae-0f12e7ff6cfc.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/f80e2a07-ff3b-42f3-baae-0f12e7ff6cfc.xml&amp;name=Data%20Flow%20Diagram:%20Purchase%20Management%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd mua h\u00e0ng<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-ecommerce-system\" title=\"Data Flow Diagram: ECommerce System\"><img alt=\"Data Flow Diagram: ECommerce System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/ebf78e9c-0f05-4914-857a-cf16d1df332a.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/ebf78e9c-0f05-4914-857a-cf16d1df332a.xml&amp;name=Data%20Flow%20Diagram:%20ECommerce%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-student-registration-system\" title=\"Data Flow Diagram: Student Registration System\"><img alt=\"Data Flow Diagram: Student Registration System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/e29fbc34-6ffe-4587-84b1-3dce9866c062.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/e29fbc34-6ffe-4587-84b1-3dce9866c062.xml&amp;name=Data%20Flow%20Diagram:%20Student%20Registration%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng \u0111\u0103ng k\u00fd sinh vi\u00ean<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-inventory-management-system\" title=\"Data Flow Diagram: Inventory Management System\"><img alt=\"Data Flow Diagram: Inventory Management System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/e138ec61-3685-478d-af22-5ced9b14b7ba.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/e138ec61-3685-478d-af22-5ced9b14b7ba.xml&amp;name=Data%20Flow%20Diagram:%20Inventory%20Management%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd kho<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-online-shopping-system\" title=\"Data Flow Diagram: Online Shopping System\"><img alt=\"Data Flow Diagram: Online Shopping System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/d67a5d12-b2ba-41d0-a0e5-356a462abcf8.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/d67a5d12-b2ba-41d0-a0e5-356a462abcf8.xml&amp;name=Data%20Flow%20Diagram:%20Online%20Shopping%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng mua s\u1eafm tr\u1ef1c tuy\u1ebfn<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-barangay-information-system\" title=\"Data Flow Diagram: Barangay Information System\"><img alt=\"Data Flow Diagram: Barangay Information System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/cdc9f9bb-33cd-4ea3-9954-f6ca43e216c1.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/cdc9f9bb-33cd-4ea3-9954-f6ca43e216c1.xml&amp;name=Data%20Flow%20Diagram:%20Barangay%20Information%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng th\u00f4ng tin ph\u01b0\u1eddng x\u00e3<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-example-atm\" title=\"Data Flow Diagram Example: ATM\"><img alt=\"Data Flow Diagram Example: ATM (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/cbd67317-691b-4a64-9e83-10e128826022.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/cbd67317-691b-4a64-9e83-10e128826022.xml&amp;name=Data%20Flow%20Diagram%20Example:%20ATM\">V\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: M\u00e1y r\u00fat ti\u1ec1n t\u1ef1 \u0111\u1ed9ng<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/video-rental-system-data-flow-diagram\" title=\"Video Rental System Data Flow Diagram\"><img alt=\"Video Rental System Data Flow Diagram (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/c90e9d35-8751-4645-b0f7-de0b7e09ff53.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/c90e9d35-8751-4645-b0f7-de0b7e09ff53.xml&amp;name=Video%20Rental%20System%20Data%20Flow%20Diagram\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u h\u1ec7 th\u1ed1ng cho thu\u00ea video<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-student-management-system\" title=\"Data Flow Diagram: Student Management System\"><img alt=\"Data Flow Diagram: Student Management System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/bdd6f129-13da-4410-a51f-96bb4d6d94c0.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/bdd6f129-13da-4410-a51f-96bb4d6d94c0.xml&amp;name=Data%20Flow%20Diagram:%20Student%20Management%20System\">S\u01a1 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href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-example-bank-system\" title=\"Data Flow Diagram Example: Bank System\"><img alt=\"Data Flow Diagram Example: Bank System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/aeef6c85-a3c3-4a6c-95f0-c2481b83e13c.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/aeef6c85-a3c3-4a6c-95f0-c2481b83e13c.xml&amp;name=Data%20Flow%20Diagram%20Example:%20Bank%20System\">V\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng ng\u00e2n h\u00e0ng<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-student-enrollment-system\" title=\"Data Flow Diagram: Student Enrollment System\"><img alt=\"Data Flow Diagram: Student Enrollment System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/ac5c5e88-6a9d-424c-84fe-86d9c0f9c49a.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/ac5c5e88-6a9d-424c-84fe-86d9c0f9c49a.xml&amp;name=Data%20Flow%20Diagram:%20Student%20Enrollment%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng \u0111\u0103ng k\u00fd sinh vi\u00ean<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-example-parts-ordering\" title=\"Data Flow Diagram Example: Parts Ordering\"><img alt=\"Data Flow Diagram Example: Parts Ordering (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/9de60a97-0ca3-40dd-9f6a-28fa2d9c1f84.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/9de60a97-0ca3-40dd-9f6a-28fa2d9c1f84.xml&amp;name=Data%20Flow%20Diagram%20Example:%20Parts%20Ordering\">V\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: \u0110\u1eb7t h\u00e0ng linh ki\u1ec7n<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/dfd-example-airline-reservation-system\" title=\"DFD Example: Airline Reservation System\"><img alt=\"DFD Example: Airline Reservation System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/9562989c-bbcb-4dd0-bfc1-34c6bec6397d.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/9562989c-bbcb-4dd0-bfc1-34c6bec6397d.xml&amp;name=DFD%20Example:%20Airline%20Reservation%20System\">V\u00ed d\u1ee5 DFD: H\u1ec7 th\u1ed1ng \u0111\u1eb7t v\u00e9 m\u00e1y bay<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/dfd-example-simple-order-processing\" title=\"DFD Example: Simple Order Processing\"><img alt=\"DFD Example: Simple Order Processing (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/8c62858b-6bc8-42c0-baa6-b26e64e0febe.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/8c62858b-6bc8-42c0-baa6-b26e64e0febe.xml&amp;name=DFD%20Example:%20Simple%20Order%20Processing\">V\u00ed d\u1ee5 DFD: X\u1eed l\u00fd \u0111\u01a1n h\u00e0ng \u0111\u01a1n gi\u1ea3n<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-accounting-information-system\" title=\"Data Flow Diagram: Accounting Information System\"><img alt=\"Data Flow Diagram: Accounting Information System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/8c4defce-b113-4da1-86f0-06165cb28a98.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/8c4defce-b113-4da1-86f0-06165cb28a98.xml&amp;name=Data%20Flow%20Diagram:%20Accounting%20Information%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng th\u00f4ng tin k\u1ebf to\u00e1n<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/securities-trading-platform\" title=\"Securities Trading Platform\"><img alt=\"Securities Trading Platform (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/8c2c19d0-cd9d-4e04-8192-ff0a8c6bea8c.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/8c2c19d0-cd9d-4e04-8192-ff0a8c6bea8c.xml&amp;name=Securities%20Trading%20Platform\">N\u1ec1n t\u1ea3ng giao d\u1ecbch ch\u1ee9ng kho\u00e1n<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/student-registration-system-data-flow\" title=\"Student Registration System Data Flow\"><img alt=\"Student Registration System Data Flow (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/7abf891d-c7db-44c1-9b93-93f5d424b4c6.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/7abf891d-c7db-44c1-9b93-93f5d424b4c6.xml&amp;name=Student%20Registration%20System%20Data%20Flow\">Lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a h\u1ec7 th\u1ed1ng \u0111\u0103ng k\u00fd sinh vi\u00ean<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/customer-service-system-railway-company\" title=\"Customer Service System (Railway Company)\"><img alt=\"Customer Service System (Railway Company) (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/6963afef-4946-42f3-9117-f089fa70cfc1.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/6963afef-4946-42f3-9117-f089fa70cfc1.xml&amp;name=Customer%20Service%20System%20(Railway%20Company)\">H\u1ec7 th\u1ed1ng d\u1ecbch v\u1ee5 kh\u00e1ch h\u00e0ng (C\u00f4ng ty \u0111\u01b0\u1eddng s\u1eaft)<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-payroll-management-system\" title=\"Data Flow Diagram: Payroll Management System\"><img alt=\"Data Flow Diagram: Payroll Management System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/6496a2b8-ba75-4d7b-afa9-49e94d0e4ebd.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/6496a2b8-ba75-4d7b-afa9-49e94d0e4ebd.xml&amp;name=Data%20Flow%20Diagram:%20Payroll%20Management%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd l\u01b0\u01a1ng<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/dfd-example-library-management-system\" title=\"DFD Example: Library Management System\"><img alt=\"DFD Example: Library Management System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/6291fa34-034a-4279-91f1-42e9e7f54adb.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/6291fa34-034a-4279-91f1-42e9e7f54adb.xml&amp;name=DFD%20Example:%20Library%20Management%20System\">V\u00ed d\u1ee5 DFD: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd th\u01b0 vi\u1ec7n<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-university-management-system\" title=\"Data Flow Diagram: University Management System\"><img alt=\"Data Flow Diagram: University Management System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/4190b1fa-bf81-47a9-b5c0-ff86bdef65cb.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/4190b1fa-bf81-47a9-b5c0-ff86bdef65cb.xml&amp;name=Data%20Flow%20Diagram:%20University%20Management%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd tr\u01b0\u1eddng \u0111\u1ea1i h\u1ecdc<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-library-management-system\" title=\"Data Flow Diagram: Library Management System\"><img alt=\"Data Flow Diagram: Library Management System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/4046970a-99f4-4dd9-b09b-46cd329c0f49.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/4046970a-99f4-4dd9-b09b-46cd329c0f49.xml&amp;name=Data%20Flow%20Diagram:%20Library%20Management%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd th\u01b0 vi\u1ec7n<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/vehicle-maintenance-depot\" title=\"Vehicle Maintenance Depot\"><img alt=\"Vehicle Maintenance Depot (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/3f0b7361-8afd-463e-b1e2-e5a54d5207b3.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/3f0b7361-8afd-463e-b1e2-e5a54d5207b3.xml&amp;name=Vehicle%20Maintenance%20Depot\">C\u01a1 s\u1edf b\u1ea3o tr\u00ec ph\u01b0\u01a1ng ti\u1ec7n<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-hotel-management-system\" title=\"Data Flow Diagram: Hotel Management System\"><img alt=\"Data Flow Diagram: Hotel Management System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/3368779e-e40a-4607-bec1-5f2e61cd1c0b.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/3368779e-e40a-4607-bec1-5f2e61cd1c0b.xml&amp;name=Data%20Flow%20Diagram:%20Hotel%20Management%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd kh\u00e1ch s\u1ea1n<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/food-ordering-system\" title=\"Food Ordering System\"><img alt=\"Food Ordering System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/2e409d26-3345-4516-acde-c36b59fa3e0b.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/2e409d26-3345-4516-acde-c36b59fa3e0b.xml&amp;name=Food%20Ordering%20System\">H\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n \u0103n<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-collage-management-system\" title=\"Data Flow Diagram: Collage Management System\"><img alt=\"Data Flow Diagram: Collage Management System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/15685b42-e3f6-4340-b634-6245628deb6e.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/15685b42-e3f6-4340-b634-6245628deb6e.xml&amp;name=Data%20Flow%20Diagram:%20Collage%20Management%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd tr\u01b0\u1eddng h\u1ecdc<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-hospital-management-system\" title=\"Data Flow Diagram: Hospital Management System\"><img alt=\"Data Flow Diagram: Hospital Management System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/0acfd4a1-bd68-471d-a7e5-3cf28c2fc6eb.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/0acfd4a1-bd68-471d-a7e5-3cf28c2fc6eb.xml&amp;name=Data%20Flow%20Diagram:%20Hospital%20Management%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd b\u1ec7nh vi\u1ec7n<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/food-ordering-system-context-dfd\" title=\"Food Ordering System Context DFD\"><img alt=\"Food Ordering System Context DFD (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/0a02926d-965e-4443-8103-980b71d7c91f.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/0a02926d-965e-4443-8103-980b71d7c91f.xml&amp;name=Food%20Ordering%20System%20Context%20DFD\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u b\u1ed1i c\u1ea3nh: H\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n \u0103n<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/supermarket-app\" title=\"Supermarket App\"><img alt=\"Supermarket App (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/0640ff0f-f7f8-4327-a735-94b451a6fd88.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/0640ff0f-f7f8-4327-a735-94b451a6fd88.xml&amp;name=Supermarket%20App\">\u1ee8ng d\u1ee5ng si\u00eau th\u1ecb<\/a><\/p>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-assignment-management-system\" title=\"Data Flow Diagram: Assignment Management System\"><img alt=\"Data Flow Diagram: Assignment Management System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/031919d6-358a-4aed-aa94-990cb6affb77.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/031919d6-358a-4aed-aa94-990cb6affb77.xml&amp;name=Data%20Flow%20Diagram:%20Assignment%20Management%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd nhi\u1ec7m v\u1ee5<\/a><\/p>\n<ul>\n<li><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/data-flow-diagram\/data-flow-diagram-point-of-sales-pos-system\" title=\"Data Flow Diagram: Point of Sales (POS) System\"><img alt=\"Data Flow Diagram: Point of Sales (POS) System (Data Flow Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/01f55027-1979-4cb0-a14e-4e0fd659d519.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/01f55027-1979-4cb0-a14e-4e0fd659d519.xml&amp;name=Data%20Flow%20Diagram:%20Point%20of%20Sales%20(POS)%20System\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u1ec7 th\u1ed1ng \u0111i\u1ec3m b\u00e1n h\u00e0ng (POS)<\/a><\/li>\n<\/ul>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Gi\u1edbi thi\u1ec7u Vi\u1ec7c \u0111i qua b\u1ee9c tranh ph\u1ee9c t\u1ea1p c\u1ee7a k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m \u0111\u00f2i h\u1ecfi nh\u1eefng c\u00f4ng c\u1ee5 c\u00f3 th\u1ec3 l\u00e0m r\u00f5 s\u1ef1 ph\u1ee9c t\u1ea1p. Trong s\u1ed1 c\u00e1c c\u00f4ng c\u1ee5 \u0111\u00f3, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) \u0111\u00f3ng vai tr\u00f2 n\u1ec1n t\u1ea3ng, cung c\u1ea5p b\u1ea3n \u0111\u1ed3 tr\u1ef1c quan \u0111\u1ec3 hi\u1ec3u r\u00f5 lu\u1ed3ng th\u00f4ng tin b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng. Trong h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y, ch\u00fang ta s\u1ebd c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng n\u1ec1n t\u1ea3ng, nguy\u00ean t\u1eafc v\u00e0 c\u00e1c c\u1ea5p \u0111\u1ed9 c\u1ea5u tr\u00fac c\u1ee7a DFD \u0111\u1ec3 trang b\u1ecb cho b\u1ea1n nh\u1eefng k\u1ef9 n\u0103ng c\u1ea7n thi\u1ebft \u0111\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu n\u00e0y trong thi\u1ebft k\u1ebf ph\u1ea7n m\u1ec1m. B\u1ed9c l\u1ed9 b\u1ea3n ch\u1ea5t c\u1ee7a DFD \u1ede c\u1ed1t l\u00f5i, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda ghi l\u1ea1i s\u1ef1 di chuy\u1ec3n v\u00e0 bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u trong m\u1ed9t h\u1ec7 th\u1ed1ng. D\u00f9 h\u1ec7 th\u1ed1ng l\u00e0 th\u1ee7 c\u00f4ng, t\u1ef1 \u0111\u1ed9ng hay k\u1ebft h\u1ee3p c\u1ea3 hai, m\u1ed9t s\u01a1 \u0111\u1ed3 DFD \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1ed1t s\u1ebd \u0111\u00f3ng vai tr\u00f2 nh\u01b0 la b\u00e0n, d\u1eabn d\u1eaft c\u00e1c b\u00ean li\u00ean quan qua nh\u1eefng chi ti\u1ebft ph\u1ee9c t\u1ea1p c\u1ee7a y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng. M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a DFD: X\u00e1c \u0111\u1ecbnh ph\u1ea1m vi:X\u00e1c \u0111\u1ecbnh r\u00f5 ranh gi\u1edbi v\u00e0 ph\u1ea1m vi c\u1ee7a h\u1ec7 th\u1ed1ng. C\u00f4ng c\u1ee5 giao ti\u1ebfp:Th\u00fac \u0111\u1ea9y giao ti\u1ebfp hi\u1ec7u qu\u1ea3 gi\u1eefa c\u00e1c nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c b\u00ean li\u00ean quan. N\u1ec1n t\u1ea3ng kh\u1edfi \u0111\u1ed9ng l\u1ea1i thi\u1ebft k\u1ebf:\u0110\u00f3ng vai tr\u00f2 l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u cho vi\u1ec7c thi\u1ebft k\u1ebf l\u1ea1i v\u00e0 c\u1ea3i ti\u1ebfn h\u1ec7 th\u1ed1ng. Nguy\u00ean t\u1eafc h\u01b0\u1edbng d\u1eabn cho DFD hi\u1ec7u qu\u1ea3 \u0110\u1ec3 khai th\u00e1c t\u1ed1i \u0111a ti\u1ec1m n\u0103ng c\u1ee7a DFD, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 tu\u00e2n th\u1ee7 c\u00e1c nguy\u00ean t\u1eafc ch\u00ednh: \u0110\u1eb7t t\u00ean ri\u00eang bi\u1ec7t:\u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n trong DFD c\u00f3 t\u00ean ri\u00eang bi\u1ec7t, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho s\u1ef1 r\u00f5 r\u00e0ng v\u00e0 ch\u00ednh x\u00e1c trong c\u00e1c tham chi\u1ebfu. Ph\u00e2n bi\u1ec7t v\u1edbi s\u01a1 \u0111\u1ed3 d\u00f2ng ch\u1ea3y:Kh\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 d\u00f2ng ch\u1ea3y m\u00f4 t\u1ea3 tr\u00ecnh t\u1ef1 c\u00e1c s\u1ef1 ki\u1ec7n, DFD t\u1eadp trung v\u00e0o lu\u1ed3ng d\u1eef li\u1ec7u. C\u00e1c m\u0169i t\u00ean bi\u1ec3u th\u1ecb s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u, ch\u1ee9 kh\u00f4ng ph\u1ea3i th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n thao t\u00e1c. Tr\u00e1nh c\u00e1c quy\u1ebft \u0111\u1ecbnh logic:Tr\u00e1nh s\u1eed d\u1ee5ng c\u00e1c \u0111i\u1ec3m quy\u1ebft \u0111\u1ecbnh h\u00ecnh thoi c\u00f3 trong s\u01a1 \u0111\u1ed3 d\u00f2ng ch\u1ea3y, v\u00ec DFD kh\u00f4ng quy \u0111\u1ecbnh th\u1ee9 t\u1ef1 r\u00f5 r\u00e0ng c\u1ee7a c\u00e1c s\u1ef1 ki\u1ec7n. Chi ti\u1ebft \u0111\u01b0\u1ee3c ho\u00e3n l\u1ea1i:Ho\u00e3n l\u1ea1i c\u00e1c chi ti\u1ebft ph\u1ee9c t\u1ea1p, nh\u01b0 \u0111i\u1ec1u ki\u1ec7n l\u1ed7i v\u00e0 c\u00e1ch x\u1eed l\u00fd, \u0111\u1ebfn c\u00e1c giai \u0111o\u1ea1n sau c\u1ee7a ph\u00e2n t\u00edch \u0111\u1ec3 tr\u00e1nh b\u1ecb ch\u00ecm trong chi ti\u1ebft nh\u1ecf. C\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n trong DFD \u0110\u01b0\u1ee3c l\u1ea5y t\u1eeb ph\u00e2n t\u00edch s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n, DFD s\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n: H\u00ecnh tr\u00f2n (Bong b\u00f3ng):Bi\u1ec3u di\u1ec5n m\u1ed9t qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o th\u00e0nh d\u1eef li\u1ec7u \u0111\u1ea7u ra. \u0110\u01b0\u1eddng cong (Lu\u1ed3ng d\u1eef li\u1ec7u):Ch\u1ec9 ra s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u v\u00e0o ho\u1eb7c ra kh\u1ecfi m\u1ed9t qu\u00e1 tr\u00ecnh ho\u1eb7c kho d\u1eef li\u1ec7u. Hai \u0111\u01b0\u1eddng song song (Kho d\u1eef li\u1ec7u):Ch\u1ec9 ra m\u1ed9t v\u1ecb tr\u00ed l\u01b0u tr\u1eef d\u1eef li\u1ec7u, c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u1ec3 s\u1eed d\u1ee5ng trong t\u01b0\u01a1ng lai b\u1edfi c\u00e1c qu\u00e1 tr\u00ecnh kh\u00e1c. Ngu\u1ed3n ho\u1eb7c \u0111i\u1ec3m thu:C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i \u0111\u00f3ng vai tr\u00f2 l\u00e0 ngu\u1ed3n cung c\u1ea5p \u0111\u1ea7u v\u00e0o ho\u1eb7c \u0111i\u1ec3m \u0111\u1ebfn cho \u0111\u1ea7u ra. C\u1ea5p \u0111\u1ed9 trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: C\u1ea5u tr\u00fac h\u00f3a \u0111\u1ed9 ph\u1ee9c t\u1ea1p S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c theo c\u00e1c c\u1ea5p \u0111\u1ed9, m\u1ed7i c\u1ea5p \u0111\u1ed9 g\u00f3p ph\u1ea7n v\u00e0o vi\u1ec7c hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 h\u1ec7 th\u1ed1ng theo t\u1eebng m\u1ee9c \u0111\u1ed9 chi ti\u1ebft h\u01a1n: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 0 (M\u00f4 h\u00ecnh h\u1ec7 th\u1ed1ng c\u01a1 b\u1ea3n): Tr\u00ecnh b\u00e0y to\u00e0n b\u1ed9 y\u00eau c\u1ea7u ph\u1ea7n m\u1ec1m trong m\u1ed9t v\u00f2ng tr\u00f2n duy nh\u1ea5t, th\u1ec3 hi\u1ec7n d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra. L\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 ph\u00e2n t\u00edch s\u00e2u h\u01a1n th\u00e0nh c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u chi ti\u1ebft h\u01a1n. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1: Chia nh\u1ecf s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh th\u00e0nh nhi\u1ec1u qu\u00e1 tr\u00ecnh, nh\u1ea5n m\u1ea1nh v\u00e0o c\u00e1c m\u1ee5c ti\u00eau ch\u00ednh v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh con c\u1ee7a h\u1ec7 th\u1ed1ng. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 2: \u0110i s\u00e2u h\u01a1n, cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft v\u1ec1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng. Ghi l\u1ea1i c\u00e1c chi ti\u1ebft c\u1ee5 th\u1ec3 c\u1ea7n thi\u1ebft \u0111\u1ec3 hi\u1ec3u to\u00e0n di\u1ec7n. K\u1ebft lu\u1eadn: Th\u00fac \u0111\u1ea9y ng\u00e0nh k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m Khi b\u1ea1n b\u1eaft \u0111\u1ea7u h\u00e0nh tr\u00ecnh trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m, h\u00e3y xem s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u nh\u01b0 ng\u01b0\u1eddi b\u1ea1n \u0111\u1ed3ng h\u00e0nh \u0111\u00e1ng tin c\u1eady. Kh\u00f4ng ch\u1ec9 l\u00e0 c\u00f4ng c\u1ee5 tr\u1ef1c quan, ch\u00fang c\u00f2n l\u00e0 c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd cho giao ti\u1ebfp, ph\u00e2n t\u00edch v\u00e0 t\u00e1i thi\u1ebft k\u1ebf. V\u1edbi c\u00e1c nguy\u00ean t\u1eafc v\u00e0 k\u00fd hi\u1ec7u \u0111\u01b0\u1ee3c n\u00eau trong h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n \u0111\u00e3 n\u1eafm gi\u1eef ch\u00eca kh\u00f3a \u0111\u1ec3 kh\u00e1m ph\u00e1 b\u1ea3n ch\u1ea5t ph\u1ee9c t\u1ea1p c\u1ee7a lu\u1ed3ng d\u1eef li\u1ec7u trong m\u1ed9t h\u1ec7 th\u1ed1ng. H\u00e3y \u0111\u1ec3 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u tr\u1edf th\u00e0nh \u00e1nh s\u00e1ng d\u1eabn \u0111\u01b0\u1eddng cho b\u1ea1n trong th\u1ebf gi\u1edbi r\u1ed9ng l\u1edbn c\u1ee7a thi\u1ebft k\u1ebf v\u00e0 k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m. Kh\u00e1m ph\u00e1 s\u1ee9c m\u1ea1nh c\u1ee7a vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u tr\u1ef1c tuy\u1ebfn v\u1edbi Visual Paradigm M\u1edf kh\u00f3a ti\u1ec1m n\u0103ng t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) li\u1ec1n m\u1ea1ch v\u1edbi ph\u1ea7n m\u1ec1m DFD tr\u1ef1c tuy\u1ebfn c\u1ee7a Visual Paradigm. L\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m, DFD m\u00f4 t\u1ea3 tr\u1ef1c quan s\u1ef1 di chuy\u1ec3n ph\u1ee9c t\u1ea1p c\u1ee7a d\u1eef li\u1ec7u trong m\u1ed9t h\u1ec7 th\u1ed1ng th\u00f4ng tin doanh nghi\u1ec7p. Gi\u1edd \u0111\u00e2y, vi\u1ec7c v\u1ebd c\u00e1c s\u01a1 \u0111\u1ed3 DFD chuy\u00ean nghi\u1ec7p \u0111\u00e3 n\u1eb1m trong t\u1ea7m tay b\u1ea1n, nh\u1edd n\u1ec1n t\u1ea3ng tr\u1ef1c tuy\u1ebfn tr\u1ef1c quan c\u1ee7a Visual Paradigm. T\u1ea1i sao n\u00ean ch\u1ecdn Visual Paradigm \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u? V\u1ebd tr\u1ef1c tuy\u1ebfn d\u1ec5 d\u00e0ng: Truy c\u1eadp v\u00e0o s\u1ee9c m\u1ea1nh t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u m\u1ecdi l\u00fac, m\u1ecdi n\u01a1i v\u1edbi n\u1ec1n t\u1ea3ng tr\u1ef1c tuy\u1ebfn c\u1ee7a Visual Paradigm. Giao di\u1ec7n tr\u1ef1c quan \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m v\u1ebd m\u01b0\u1ee3t m\u00e0 v\u00e0 hi\u1ec7u qu\u1ea3. Tr\u1ef1c quan h\u00f3a d\u1eef li\u1ec7u to\u00e0n di\u1ec7n: Tr\u1ef1c quan h\u00f3a s\u1ef1 chuy\u1ec3n giao li\u1ec1n m\u1ea1ch c\u1ee7a d\u1eef li\u1ec7u gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh,<a href=\"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-in-software-engineering\/\" 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 trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m<\/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-6390","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 trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m - 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-in-software-engineering\/\" \/>\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 trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m - Visual Paradigm Guides Vietnamese\" \/>\n<meta property=\"og:description\" content=\"Gi\u1edbi thi\u1ec7u Vi\u1ec7c \u0111i qua b\u1ee9c tranh ph\u1ee9c t\u1ea1p c\u1ee7a k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m \u0111\u00f2i h\u1ecfi nh\u1eefng c\u00f4ng c\u1ee5 c\u00f3 th\u1ec3 l\u00e0m r\u00f5 s\u1ef1 ph\u1ee9c t\u1ea1p. Trong s\u1ed1 c\u00e1c c\u00f4ng c\u1ee5 \u0111\u00f3, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) \u0111\u00f3ng vai tr\u00f2 n\u1ec1n t\u1ea3ng, cung c\u1ea5p b\u1ea3n \u0111\u1ed3 tr\u1ef1c quan \u0111\u1ec3 hi\u1ec3u r\u00f5 lu\u1ed3ng th\u00f4ng tin b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng. Trong h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y, ch\u00fang ta s\u1ebd c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng n\u1ec1n t\u1ea3ng, nguy\u00ean t\u1eafc v\u00e0 c\u00e1c c\u1ea5p \u0111\u1ed9 c\u1ea5u tr\u00fac c\u1ee7a DFD \u0111\u1ec3 trang b\u1ecb cho b\u1ea1n nh\u1eefng k\u1ef9 n\u0103ng c\u1ea7n thi\u1ebft \u0111\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu n\u00e0y trong thi\u1ebft k\u1ebf ph\u1ea7n m\u1ec1m. B\u1ed9c l\u1ed9 b\u1ea3n ch\u1ea5t c\u1ee7a DFD \u1ede c\u1ed1t l\u00f5i, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda ghi l\u1ea1i s\u1ef1 di chuy\u1ec3n v\u00e0 bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u trong m\u1ed9t h\u1ec7 th\u1ed1ng. D\u00f9 h\u1ec7 th\u1ed1ng l\u00e0 th\u1ee7 c\u00f4ng, t\u1ef1 \u0111\u1ed9ng hay k\u1ebft h\u1ee3p c\u1ea3 hai, m\u1ed9t s\u01a1 \u0111\u1ed3 DFD \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1ed1t s\u1ebd \u0111\u00f3ng vai tr\u00f2 nh\u01b0 la b\u00e0n, d\u1eabn d\u1eaft c\u00e1c b\u00ean li\u00ean quan qua nh\u1eefng chi ti\u1ebft ph\u1ee9c t\u1ea1p c\u1ee7a y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng. M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a DFD: X\u00e1c \u0111\u1ecbnh ph\u1ea1m vi:X\u00e1c \u0111\u1ecbnh r\u00f5 ranh gi\u1edbi v\u00e0 ph\u1ea1m vi c\u1ee7a h\u1ec7 th\u1ed1ng. C\u00f4ng c\u1ee5 giao ti\u1ebfp:Th\u00fac \u0111\u1ea9y giao ti\u1ebfp hi\u1ec7u qu\u1ea3 gi\u1eefa c\u00e1c nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c b\u00ean li\u00ean quan. N\u1ec1n t\u1ea3ng kh\u1edfi \u0111\u1ed9ng l\u1ea1i thi\u1ebft k\u1ebf:\u0110\u00f3ng vai tr\u00f2 l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u cho vi\u1ec7c thi\u1ebft k\u1ebf l\u1ea1i v\u00e0 c\u1ea3i ti\u1ebfn h\u1ec7 th\u1ed1ng. Nguy\u00ean t\u1eafc h\u01b0\u1edbng d\u1eabn cho DFD hi\u1ec7u qu\u1ea3 \u0110\u1ec3 khai th\u00e1c t\u1ed1i \u0111a ti\u1ec1m n\u0103ng c\u1ee7a DFD, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 tu\u00e2n th\u1ee7 c\u00e1c nguy\u00ean t\u1eafc ch\u00ednh: \u0110\u1eb7t t\u00ean ri\u00eang bi\u1ec7t:\u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n trong DFD c\u00f3 t\u00ean ri\u00eang bi\u1ec7t, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho s\u1ef1 r\u00f5 r\u00e0ng v\u00e0 ch\u00ednh x\u00e1c trong c\u00e1c tham chi\u1ebfu. Ph\u00e2n bi\u1ec7t v\u1edbi s\u01a1 \u0111\u1ed3 d\u00f2ng ch\u1ea3y:Kh\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 d\u00f2ng ch\u1ea3y m\u00f4 t\u1ea3 tr\u00ecnh t\u1ef1 c\u00e1c s\u1ef1 ki\u1ec7n, DFD t\u1eadp trung v\u00e0o lu\u1ed3ng d\u1eef li\u1ec7u. C\u00e1c m\u0169i t\u00ean bi\u1ec3u th\u1ecb s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u, ch\u1ee9 kh\u00f4ng ph\u1ea3i th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n thao t\u00e1c. Tr\u00e1nh c\u00e1c quy\u1ebft \u0111\u1ecbnh logic:Tr\u00e1nh s\u1eed d\u1ee5ng c\u00e1c \u0111i\u1ec3m quy\u1ebft \u0111\u1ecbnh h\u00ecnh thoi c\u00f3 trong s\u01a1 \u0111\u1ed3 d\u00f2ng ch\u1ea3y, v\u00ec DFD kh\u00f4ng quy \u0111\u1ecbnh th\u1ee9 t\u1ef1 r\u00f5 r\u00e0ng c\u1ee7a c\u00e1c s\u1ef1 ki\u1ec7n. Chi ti\u1ebft \u0111\u01b0\u1ee3c ho\u00e3n l\u1ea1i:Ho\u00e3n l\u1ea1i c\u00e1c chi ti\u1ebft ph\u1ee9c t\u1ea1p, nh\u01b0 \u0111i\u1ec1u ki\u1ec7n l\u1ed7i v\u00e0 c\u00e1ch x\u1eed l\u00fd, \u0111\u1ebfn c\u00e1c giai \u0111o\u1ea1n sau c\u1ee7a ph\u00e2n t\u00edch \u0111\u1ec3 tr\u00e1nh b\u1ecb ch\u00ecm trong chi ti\u1ebft nh\u1ecf. C\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n trong DFD \u0110\u01b0\u1ee3c l\u1ea5y t\u1eeb ph\u00e2n t\u00edch s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n, DFD s\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n: H\u00ecnh tr\u00f2n (Bong b\u00f3ng):Bi\u1ec3u di\u1ec5n m\u1ed9t qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o th\u00e0nh d\u1eef li\u1ec7u \u0111\u1ea7u ra. \u0110\u01b0\u1eddng cong (Lu\u1ed3ng d\u1eef li\u1ec7u):Ch\u1ec9 ra s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u v\u00e0o ho\u1eb7c ra kh\u1ecfi m\u1ed9t qu\u00e1 tr\u00ecnh ho\u1eb7c kho d\u1eef li\u1ec7u. Hai \u0111\u01b0\u1eddng song song (Kho d\u1eef li\u1ec7u):Ch\u1ec9 ra m\u1ed9t v\u1ecb tr\u00ed l\u01b0u tr\u1eef d\u1eef li\u1ec7u, c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u1ec3 s\u1eed d\u1ee5ng trong t\u01b0\u01a1ng lai b\u1edfi c\u00e1c qu\u00e1 tr\u00ecnh kh\u00e1c. Ngu\u1ed3n ho\u1eb7c \u0111i\u1ec3m thu:C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i \u0111\u00f3ng vai tr\u00f2 l\u00e0 ngu\u1ed3n cung c\u1ea5p \u0111\u1ea7u v\u00e0o ho\u1eb7c \u0111i\u1ec3m \u0111\u1ebfn cho \u0111\u1ea7u ra. C\u1ea5p \u0111\u1ed9 trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: C\u1ea5u tr\u00fac h\u00f3a \u0111\u1ed9 ph\u1ee9c t\u1ea1p S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c theo c\u00e1c c\u1ea5p \u0111\u1ed9, m\u1ed7i c\u1ea5p \u0111\u1ed9 g\u00f3p ph\u1ea7n v\u00e0o vi\u1ec7c hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 h\u1ec7 th\u1ed1ng theo t\u1eebng m\u1ee9c \u0111\u1ed9 chi ti\u1ebft h\u01a1n: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 0 (M\u00f4 h\u00ecnh h\u1ec7 th\u1ed1ng c\u01a1 b\u1ea3n): Tr\u00ecnh b\u00e0y to\u00e0n b\u1ed9 y\u00eau c\u1ea7u ph\u1ea7n m\u1ec1m trong m\u1ed9t v\u00f2ng tr\u00f2n duy nh\u1ea5t, th\u1ec3 hi\u1ec7n d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra. L\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 ph\u00e2n t\u00edch s\u00e2u h\u01a1n th\u00e0nh c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u chi ti\u1ebft h\u01a1n. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1: Chia nh\u1ecf s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh th\u00e0nh nhi\u1ec1u qu\u00e1 tr\u00ecnh, nh\u1ea5n m\u1ea1nh v\u00e0o c\u00e1c m\u1ee5c ti\u00eau ch\u00ednh v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh con c\u1ee7a h\u1ec7 th\u1ed1ng. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 2: \u0110i s\u00e2u h\u01a1n, cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft v\u1ec1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng. Ghi l\u1ea1i c\u00e1c chi ti\u1ebft c\u1ee5 th\u1ec3 c\u1ea7n thi\u1ebft \u0111\u1ec3 hi\u1ec3u to\u00e0n di\u1ec7n. K\u1ebft lu\u1eadn: Th\u00fac \u0111\u1ea9y ng\u00e0nh k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m Khi b\u1ea1n b\u1eaft \u0111\u1ea7u h\u00e0nh tr\u00ecnh trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m, h\u00e3y xem s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u nh\u01b0 ng\u01b0\u1eddi b\u1ea1n \u0111\u1ed3ng h\u00e0nh \u0111\u00e1ng tin c\u1eady. Kh\u00f4ng ch\u1ec9 l\u00e0 c\u00f4ng c\u1ee5 tr\u1ef1c quan, ch\u00fang c\u00f2n l\u00e0 c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd cho giao ti\u1ebfp, ph\u00e2n t\u00edch v\u00e0 t\u00e1i thi\u1ebft k\u1ebf. V\u1edbi c\u00e1c nguy\u00ean t\u1eafc v\u00e0 k\u00fd hi\u1ec7u \u0111\u01b0\u1ee3c n\u00eau trong h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n \u0111\u00e3 n\u1eafm gi\u1eef ch\u00eca kh\u00f3a \u0111\u1ec3 kh\u00e1m ph\u00e1 b\u1ea3n ch\u1ea5t ph\u1ee9c t\u1ea1p c\u1ee7a lu\u1ed3ng d\u1eef li\u1ec7u trong m\u1ed9t h\u1ec7 th\u1ed1ng. H\u00e3y \u0111\u1ec3 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u tr\u1edf th\u00e0nh \u00e1nh s\u00e1ng d\u1eabn \u0111\u01b0\u1eddng cho b\u1ea1n trong th\u1ebf gi\u1edbi r\u1ed9ng l\u1edbn c\u1ee7a thi\u1ebft k\u1ebf v\u00e0 k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m. Kh\u00e1m ph\u00e1 s\u1ee9c m\u1ea1nh c\u1ee7a vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u tr\u1ef1c tuy\u1ebfn v\u1edbi Visual Paradigm M\u1edf kh\u00f3a ti\u1ec1m n\u0103ng t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) li\u1ec1n m\u1ea1ch v\u1edbi ph\u1ea7n m\u1ec1m DFD tr\u1ef1c tuy\u1ebfn c\u1ee7a Visual Paradigm. L\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m, DFD m\u00f4 t\u1ea3 tr\u1ef1c quan s\u1ef1 di chuy\u1ec3n ph\u1ee9c t\u1ea1p c\u1ee7a d\u1eef li\u1ec7u trong m\u1ed9t h\u1ec7 th\u1ed1ng th\u00f4ng tin doanh nghi\u1ec7p. Gi\u1edd \u0111\u00e2y, vi\u1ec7c v\u1ebd c\u00e1c s\u01a1 \u0111\u1ed3 DFD chuy\u00ean nghi\u1ec7p \u0111\u00e3 n\u1eb1m trong t\u1ea7m tay b\u1ea1n, nh\u1edd n\u1ec1n t\u1ea3ng tr\u1ef1c tuy\u1ebfn tr\u1ef1c quan c\u1ee7a Visual Paradigm. T\u1ea1i sao n\u00ean ch\u1ecdn Visual Paradigm \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u? V\u1ebd tr\u1ef1c tuy\u1ebfn d\u1ec5 d\u00e0ng: Truy c\u1eadp v\u00e0o s\u1ee9c m\u1ea1nh t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u m\u1ecdi l\u00fac, m\u1ecdi n\u01a1i v\u1edbi n\u1ec1n t\u1ea3ng tr\u1ef1c tuy\u1ebfn c\u1ee7a Visual Paradigm. Giao di\u1ec7n tr\u1ef1c quan \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m v\u1ebd m\u01b0\u1ee3t m\u00e0 v\u00e0 hi\u1ec7u qu\u1ea3. 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Trong s\u1ed1 c\u00e1c c\u00f4ng c\u1ee5 \u0111\u00f3, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) \u0111\u00f3ng vai tr\u00f2 n\u1ec1n t\u1ea3ng, cung c\u1ea5p b\u1ea3n \u0111\u1ed3 tr\u1ef1c quan \u0111\u1ec3 hi\u1ec3u r\u00f5 lu\u1ed3ng th\u00f4ng tin b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng. Trong h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y, ch\u00fang ta s\u1ebd c\u00f9ng kh\u00e1m ph\u00e1 nh\u1eefng n\u1ec1n t\u1ea3ng, nguy\u00ean t\u1eafc v\u00e0 c\u00e1c c\u1ea5p \u0111\u1ed9 c\u1ea5u tr\u00fac c\u1ee7a DFD \u0111\u1ec3 trang b\u1ecb cho b\u1ea1n nh\u1eefng k\u1ef9 n\u0103ng c\u1ea7n thi\u1ebft \u0111\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu n\u00e0y trong thi\u1ebft k\u1ebf ph\u1ea7n m\u1ec1m. B\u1ed9c l\u1ed9 b\u1ea3n ch\u1ea5t c\u1ee7a DFD \u1ede c\u1ed1t l\u00f5i, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda ghi l\u1ea1i s\u1ef1 di chuy\u1ec3n v\u00e0 bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u trong m\u1ed9t h\u1ec7 th\u1ed1ng. D\u00f9 h\u1ec7 th\u1ed1ng l\u00e0 th\u1ee7 c\u00f4ng, t\u1ef1 \u0111\u1ed9ng hay k\u1ebft h\u1ee3p c\u1ea3 hai, m\u1ed9t s\u01a1 \u0111\u1ed3 DFD \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1ed1t s\u1ebd \u0111\u00f3ng vai tr\u00f2 nh\u01b0 la b\u00e0n, d\u1eabn d\u1eaft c\u00e1c b\u00ean li\u00ean quan qua nh\u1eefng chi ti\u1ebft ph\u1ee9c t\u1ea1p c\u1ee7a y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng. M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a DFD: X\u00e1c \u0111\u1ecbnh ph\u1ea1m vi:X\u00e1c \u0111\u1ecbnh r\u00f5 ranh gi\u1edbi v\u00e0 ph\u1ea1m vi c\u1ee7a h\u1ec7 th\u1ed1ng. C\u00f4ng c\u1ee5 giao ti\u1ebfp:Th\u00fac \u0111\u1ea9y giao ti\u1ebfp hi\u1ec7u qu\u1ea3 gi\u1eefa c\u00e1c nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c b\u00ean li\u00ean quan. N\u1ec1n t\u1ea3ng kh\u1edfi \u0111\u1ed9ng l\u1ea1i thi\u1ebft k\u1ebf:\u0110\u00f3ng vai tr\u00f2 l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u cho vi\u1ec7c thi\u1ebft k\u1ebf l\u1ea1i v\u00e0 c\u1ea3i ti\u1ebfn h\u1ec7 th\u1ed1ng. Nguy\u00ean t\u1eafc h\u01b0\u1edbng d\u1eabn cho DFD hi\u1ec7u qu\u1ea3 \u0110\u1ec3 khai th\u00e1c t\u1ed1i \u0111a ti\u1ec1m n\u0103ng c\u1ee7a DFD, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 tu\u00e2n th\u1ee7 c\u00e1c nguy\u00ean t\u1eafc ch\u00ednh: \u0110\u1eb7t t\u00ean ri\u00eang bi\u1ec7t:\u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n trong DFD c\u00f3 t\u00ean ri\u00eang bi\u1ec7t, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho s\u1ef1 r\u00f5 r\u00e0ng v\u00e0 ch\u00ednh x\u00e1c trong c\u00e1c tham chi\u1ebfu. Ph\u00e2n bi\u1ec7t v\u1edbi s\u01a1 \u0111\u1ed3 d\u00f2ng ch\u1ea3y:Kh\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 d\u00f2ng ch\u1ea3y m\u00f4 t\u1ea3 tr\u00ecnh t\u1ef1 c\u00e1c s\u1ef1 ki\u1ec7n, DFD t\u1eadp trung v\u00e0o lu\u1ed3ng d\u1eef li\u1ec7u. C\u00e1c m\u0169i t\u00ean bi\u1ec3u th\u1ecb s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u, ch\u1ee9 kh\u00f4ng ph\u1ea3i th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n thao t\u00e1c. Tr\u00e1nh c\u00e1c quy\u1ebft \u0111\u1ecbnh logic:Tr\u00e1nh s\u1eed d\u1ee5ng c\u00e1c \u0111i\u1ec3m quy\u1ebft \u0111\u1ecbnh h\u00ecnh thoi c\u00f3 trong s\u01a1 \u0111\u1ed3 d\u00f2ng ch\u1ea3y, v\u00ec DFD kh\u00f4ng quy \u0111\u1ecbnh th\u1ee9 t\u1ef1 r\u00f5 r\u00e0ng c\u1ee7a c\u00e1c s\u1ef1 ki\u1ec7n. Chi ti\u1ebft \u0111\u01b0\u1ee3c ho\u00e3n l\u1ea1i:Ho\u00e3n l\u1ea1i c\u00e1c chi ti\u1ebft ph\u1ee9c t\u1ea1p, nh\u01b0 \u0111i\u1ec1u ki\u1ec7n l\u1ed7i v\u00e0 c\u00e1ch x\u1eed l\u00fd, \u0111\u1ebfn c\u00e1c giai \u0111o\u1ea1n sau c\u1ee7a ph\u00e2n t\u00edch \u0111\u1ec3 tr\u00e1nh b\u1ecb ch\u00ecm trong chi ti\u1ebft nh\u1ecf. C\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n trong DFD \u0110\u01b0\u1ee3c l\u1ea5y t\u1eeb ph\u00e2n t\u00edch s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n, DFD s\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n: H\u00ecnh tr\u00f2n (Bong b\u00f3ng):Bi\u1ec3u di\u1ec5n m\u1ed9t qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o th\u00e0nh d\u1eef li\u1ec7u \u0111\u1ea7u ra. \u0110\u01b0\u1eddng cong (Lu\u1ed3ng d\u1eef li\u1ec7u):Ch\u1ec9 ra s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u v\u00e0o ho\u1eb7c ra kh\u1ecfi m\u1ed9t qu\u00e1 tr\u00ecnh ho\u1eb7c kho d\u1eef li\u1ec7u. Hai \u0111\u01b0\u1eddng song song (Kho d\u1eef li\u1ec7u):Ch\u1ec9 ra m\u1ed9t v\u1ecb tr\u00ed l\u01b0u tr\u1eef d\u1eef li\u1ec7u, c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u1ec3 s\u1eed d\u1ee5ng trong t\u01b0\u01a1ng lai b\u1edfi c\u00e1c qu\u00e1 tr\u00ecnh kh\u00e1c. Ngu\u1ed3n ho\u1eb7c \u0111i\u1ec3m thu:C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i \u0111\u00f3ng vai tr\u00f2 l\u00e0 ngu\u1ed3n cung c\u1ea5p \u0111\u1ea7u v\u00e0o ho\u1eb7c \u0111i\u1ec3m \u0111\u1ebfn cho \u0111\u1ea7u ra. C\u1ea5p \u0111\u1ed9 trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: C\u1ea5u tr\u00fac h\u00f3a \u0111\u1ed9 ph\u1ee9c t\u1ea1p S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c theo c\u00e1c c\u1ea5p \u0111\u1ed9, m\u1ed7i c\u1ea5p \u0111\u1ed9 g\u00f3p ph\u1ea7n v\u00e0o vi\u1ec7c hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 h\u1ec7 th\u1ed1ng theo t\u1eebng m\u1ee9c \u0111\u1ed9 chi ti\u1ebft h\u01a1n: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 0 (M\u00f4 h\u00ecnh h\u1ec7 th\u1ed1ng c\u01a1 b\u1ea3n): Tr\u00ecnh b\u00e0y to\u00e0n b\u1ed9 y\u00eau c\u1ea7u ph\u1ea7n m\u1ec1m trong m\u1ed9t v\u00f2ng tr\u00f2n duy nh\u1ea5t, th\u1ec3 hi\u1ec7n d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra. L\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 ph\u00e2n t\u00edch s\u00e2u h\u01a1n th\u00e0nh c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u chi ti\u1ebft h\u01a1n. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1: Chia nh\u1ecf s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh th\u00e0nh nhi\u1ec1u qu\u00e1 tr\u00ecnh, nh\u1ea5n m\u1ea1nh v\u00e0o c\u00e1c m\u1ee5c ti\u00eau ch\u00ednh v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh con c\u1ee7a h\u1ec7 th\u1ed1ng. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 2: \u0110i s\u00e2u h\u01a1n, cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft v\u1ec1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng. Ghi l\u1ea1i c\u00e1c chi ti\u1ebft c\u1ee5 th\u1ec3 c\u1ea7n thi\u1ebft \u0111\u1ec3 hi\u1ec3u to\u00e0n di\u1ec7n. K\u1ebft lu\u1eadn: Th\u00fac \u0111\u1ea9y ng\u00e0nh k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m Khi b\u1ea1n b\u1eaft \u0111\u1ea7u h\u00e0nh tr\u00ecnh trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m, h\u00e3y xem s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u nh\u01b0 ng\u01b0\u1eddi b\u1ea1n \u0111\u1ed3ng h\u00e0nh \u0111\u00e1ng tin c\u1eady. Kh\u00f4ng ch\u1ec9 l\u00e0 c\u00f4ng c\u1ee5 tr\u1ef1c quan, ch\u00fang c\u00f2n l\u00e0 c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd cho giao ti\u1ebfp, ph\u00e2n t\u00edch v\u00e0 t\u00e1i thi\u1ebft k\u1ebf. V\u1edbi c\u00e1c nguy\u00ean t\u1eafc v\u00e0 k\u00fd hi\u1ec7u \u0111\u01b0\u1ee3c n\u00eau trong h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n \u0111\u00e3 n\u1eafm gi\u1eef ch\u00eca kh\u00f3a \u0111\u1ec3 kh\u00e1m ph\u00e1 b\u1ea3n ch\u1ea5t ph\u1ee9c t\u1ea1p c\u1ee7a lu\u1ed3ng d\u1eef li\u1ec7u trong m\u1ed9t h\u1ec7 th\u1ed1ng. H\u00e3y \u0111\u1ec3 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u tr\u1edf th\u00e0nh \u00e1nh s\u00e1ng d\u1eabn \u0111\u01b0\u1eddng cho b\u1ea1n trong th\u1ebf gi\u1edbi r\u1ed9ng l\u1edbn c\u1ee7a thi\u1ebft k\u1ebf v\u00e0 k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m. Kh\u00e1m ph\u00e1 s\u1ee9c m\u1ea1nh c\u1ee7a vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u tr\u1ef1c tuy\u1ebfn v\u1edbi Visual Paradigm M\u1edf kh\u00f3a ti\u1ec1m n\u0103ng t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) li\u1ec1n m\u1ea1ch v\u1edbi ph\u1ea7n m\u1ec1m DFD tr\u1ef1c tuy\u1ebfn c\u1ee7a Visual Paradigm. L\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m, DFD m\u00f4 t\u1ea3 tr\u1ef1c quan s\u1ef1 di chuy\u1ec3n ph\u1ee9c t\u1ea1p c\u1ee7a d\u1eef li\u1ec7u trong m\u1ed9t h\u1ec7 th\u1ed1ng th\u00f4ng tin doanh nghi\u1ec7p. Gi\u1edd \u0111\u00e2y, vi\u1ec7c v\u1ebd c\u00e1c s\u01a1 \u0111\u1ed3 DFD chuy\u00ean nghi\u1ec7p \u0111\u00e3 n\u1eb1m trong t\u1ea7m tay b\u1ea1n, nh\u1edd n\u1ec1n t\u1ea3ng tr\u1ef1c tuy\u1ebfn tr\u1ef1c quan c\u1ee7a Visual Paradigm. T\u1ea1i sao n\u00ean ch\u1ecdn Visual Paradigm \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u? V\u1ebd tr\u1ef1c tuy\u1ebfn d\u1ec5 d\u00e0ng: Truy c\u1eadp v\u00e0o s\u1ee9c m\u1ea1nh t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u m\u1ecdi l\u00fac, m\u1ecdi n\u01a1i v\u1edbi n\u1ec1n t\u1ea3ng tr\u1ef1c tuy\u1ebfn c\u1ee7a Visual Paradigm. Giao di\u1ec7n tr\u1ef1c quan \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m v\u1ebd m\u01b0\u1ee3t m\u00e0 v\u00e0 hi\u1ec7u qu\u1ea3. Tr\u1ef1c quan h\u00f3a d\u1eef li\u1ec7u to\u00e0n di\u1ec7n: Tr\u1ef1c quan h\u00f3a s\u1ef1 chuy\u1ec3n giao li\u1ec1n m\u1ea1ch c\u1ee7a d\u1eef li\u1ec7u gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh,H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m","og_url":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-in-software-engineering\/","og_site_name":"Visual Paradigm Guides Vietnamese","article_published_time":"2026-02-04T10:10:44+00:00","og_image":[{"url":"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/10\/08_receive_order_created.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":"5 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-in-software-engineering\/#article","isPartOf":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-in-software-engineering\/"},"headline":"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m","datePublished":"2026-02-04T10:10:44+00:00","mainEntityOfPage":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-in-software-engineering\/"},"wordCount":2755,"commentCount":0,"image":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-in-software-engineering\/#primaryimage"},"thumbnailUrl":"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/10\/08_receive_order_created.png","articleSection":["DFD"],"inLanguage":"vi","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-in-software-engineering\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-in-software-engineering\/","url":"https:\/\/guides.visual-paradigm.com\/vn\/comprehensive-guide-to-data-flow-diagrams-in-software-engineering\/","name":"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m - 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