{"id":6377,"date":"2026-02-04T17:32:48","date_gmt":"2026-02-04T09:32:48","guid":{"rendered":"https:\/\/guides.visual-paradigm.com\/vn\/unveiling-the-complexity-a-guide-to-functional-decomposition-and-data-flow-diagrams-in-system-analysis\/"},"modified":"2026-02-04T17:32:48","modified_gmt":"2026-02-04T09:32:48","slug":"unveiling-the-complexity-a-guide-to-functional-decomposition-and-data-flow-diagrams-in-system-analysis","status":"publish","type":"post","link":"https:\/\/guides.visual-paradigm.com\/vn\/unveiling-the-complexity-a-guide-to-functional-decomposition-and-data-flow-diagrams-in-system-analysis\/","title":{"rendered":"B\u00f3c t\u00e1ch s\u1ef1 ph\u1ee9c t\u1ea1p: H\u01b0\u1edbng d\u1eabn v\u1ec1 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng v\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng"},"content":{"rendered":"<h2><strong>Gi\u1edbi thi\u1ec7u<\/strong><\/h2>\n<p>Trong th\u1ebf gi\u1edbi ph\u1ee9c t\u1ea1p c\u1ee7a ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, s\u1ef1 r\u00f5 r\u00e0ng l\u00e0 \u0111i\u1ec1u t\u1ed1i quan tr\u1ecdng. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1<a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/a> (DFD) v\u00e0 ngh\u1ec7 thu\u1eadt ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng\u2014nh\u1eefng c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd gi\u00fap l\u00e0m r\u00f5 s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a h\u1ec7 th\u1ed1ng, d\u1eabn d\u1eaft ch\u00fang ta qua cu\u1ed9c v\u0169 \u0111i\u1ec7u tinh vi c\u1ee7a d\u1eef li\u1ec7u.<\/p>\n<p>B\u00e0i vi\u1ebft n\u00e0y b\u1eaft \u0111\u1ea7u m\u1ed9t h\u00e0nh tr\u00ecnh l\u00e0m s\u00e1ng t\u1ecf nh\u1eefng kh\u00e1i ni\u1ec7m n\u00e0y, kh\u00e1m ph\u00e1 c\u00e1ch ch\u00fang k\u1ebft h\u1ee3p v\u1edbi nhau \u0111\u1ec3 cung c\u1ea5p c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. T\u1eeb c\u00e1i nh\u00ecn t\u1ed5ng quan c\u1ee7a s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh \u0111\u1ebfn chi ti\u1ebft tinh vi \u1edf c\u00e1c c\u1ea5p \u0111\u1ed9 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ti\u1ebfp theo, ch\u00fang ta \u0111i qua b\u1ee9c tranh ph\u00e2n t\u00edch c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ec3 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 t\u00ednh module v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/p>\n<p><img alt=\"Data Flow Diagram Example: Bank System\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/aeef6c85-a3c3-4a6c-95f0-c2481b83e13c\/data-flow-diagram-design\/data-flow-diagram-example-bank-system.png\"\/><\/p>\n<p><strong>Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD):<\/strong><\/p>\n<p>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 h\u00ecnh \u1ea3nh minh h\u1ecda c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n qua m\u1ed9t h\u1ec7 th\u1ed1ng, th\u1ec3 hi\u1ec7n c\u00e1c qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u, ngu\u1ed3n d\u1eef li\u1ec7u v\u00e0 \u0111\u00edch d\u1eef li\u1ec7u. Ch\u00fang cung c\u1ea5p m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng v\u00e0 s\u00fac t\u00edch \u0111\u1ec3 hi\u1ec3u ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1ch th\u00f4ng tin di chuy\u1ec3n b\u00ean trong n\u00f3.<\/p>\n<p><strong>Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng:<\/strong><\/p>\n<p>Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng l\u00e0 qu\u00e1 tr\u00ecnh chia nh\u1ecf m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c ti\u1ec3u h\u1ec7 th\u1ed1ng ho\u1eb7c ch\u1ee9c n\u0103ng nh\u1ecf h\u01a1n, d\u1ec5 qu\u1ea3n l\u00fd h\u01a1n. N\u00f3 gi\u00fap hi\u1ec3u r\u00f5 c\u1ea5u tr\u00fac v\u00e0 th\u1ee9 b\u1eadc c\u1ee7a h\u1ec7 th\u1ed1ng, l\u00e0m cho vi\u1ec7c ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n<p><strong>C\u00e1c c\u1ea5p \u0111\u1ed9 c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD):<\/strong><\/p>\n<ol>\n<li><strong>S\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh:<\/strong>\n<ul>\n<li><em>M\u1ee5c \u0111\u00edch:<\/em> S\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh cung c\u1ea5p c\u00e1i nh\u00ecn t\u1ed5ng quan v\u1ec1 to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. N\u00f3 th\u1ec3 hi\u1ec7n h\u1ec7 th\u1ed1ng nh\u01b0 m\u1ed9t qu\u00e1 tr\u00ecnh duy nh\u1ea5t v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i t\u01b0\u01a1ng t\u00e1c v\u1edbi n\u00f3. S\u01a1 \u0111\u1ed3 n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 hi\u1ec3u ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0o v\u00e0 ra kh\u1ecfi h\u1ec7 th\u1ed1ng.<\/li>\n<li><em>C\u00e1ch th\u1ef1c hi\u1ec7n:<\/em> B\u1eaft \u0111\u1ea7u b\u1eb1ng m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt \u0111\u1ea1i di\u1ec7n cho to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng (qu\u00e1 tr\u00ecnh) v\u00e0 g\u00e1n nh\u00e3n cho n\u00f3. Sau \u0111\u00f3, x\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i (ngu\u1ed3n ho\u1eb7c \u0111\u00edch c\u1ee7a d\u1eef li\u1ec7u) v\u00e0 k\u1ebft n\u1ed1i ch\u00fang v\u1edbi h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1c m\u0169i t\u00ean th\u1ec3 hi\u1ec7n lu\u1ed3ng d\u1eef li\u1ec7u.<\/li>\n<li><em>\u01afu \u0111i\u1ec3m:<\/em> S\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh l\u00e0m \u0111\u01a1n gi\u1ea3n h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p, gi\u00fap ch\u00fang d\u1ec5 hi\u1ec3u h\u01a1n. \u0110\u00e2y l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 giao ti\u1ebfp qu\u00fd gi\u00e1 gi\u1eefa c\u00e1c b\u00ean li\u00ean quan, gi\u00fap h\u1ecd hi\u1ec3u c\u00e1c t\u01b0\u01a1ng t\u00e1c trong h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng c\u1ea7n \u0111i s\u00e2u v\u00e0o chi ti\u1ebft ph\u1ee9c t\u1ea1p.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><img alt=\"Student Registration System Data Flow\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/7abf891d-c7db-44c1-9b93-93f5d424b4c6\/data-flow-diagram-design\/student-registration-system-data-flow.png\"\/><\/p>\n<p id=\"aTiCJay\">\n<ol>\n<li><strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1:<\/strong>\n<ul>\n<li><em>M\u1ee5c \u0111\u00edch:<\/em> S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1 \u0111i s\u00e2u h\u01a1n v\u00e0o h\u1ec7 th\u1ed1ng, chia nh\u1ecf qu\u00e1 tr\u00ecnh ch\u00ednh th\u00e0nh c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh ch\u00ednh. N\u00f3 cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft h\u01a1n v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n b\u00ean trong h\u1ec7 th\u1ed1ng.<\/li>\n<li><em>C\u00e1ch th\u1ef1c hi\u1ec7n:<\/em> L\u1ea5y qu\u00e1 tr\u00ecnh ch\u00ednh t\u1eeb s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh v\u00e0 chia nh\u1ecf n\u00f3 th\u00e0nh c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh ch\u00ednh. K\u1ebft n\u1ed1i c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh n\u00e0y b\u1eb1ng c\u00e1c m\u0169i t\u00ean th\u1ec3 hi\u1ec7n lu\u1ed3ng d\u1eef li\u1ec7u. C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i v\u1eabn gi\u1eef nguy\u00ean \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y, t\u01b0\u01a1ng t\u00e1c v\u1edbi qu\u00e1 tr\u00ecnh ch\u00ednh v\u00e0 c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh.<\/li>\n<li><em>\u01afu \u0111i\u1ec3m:<\/em> S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1 gi\u00fap hi\u1ec3u r\u00f5 c\u00e1c ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang. N\u00f3 t\u1ea1o n\u1ec1n t\u1ea3ng cho vi\u1ec7c ph\u00e2n t\u00edch s\u00e2u h\u01a1n v\u00e0o c\u00e1c c\u1ea5p \u0111\u1ed9 chi ti\u1ebft h\u01a1n.<\/li>\n<li><img alt=\"What is Data Flow Diagram (DFD)? How to Draw DFD?\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/10\/13-decompose-process.png\"\/>\n<p id=\"QtsXRjk\">\n<\/li>\n<\/ul>\n<\/li>\n<li><strong>C\u00e1c c\u1ea5p \u0111\u1ed9 ti\u1ebfp theo c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u:<\/strong>\n<ul>\n<li><em>M\u1ee5c \u0111\u00edch:<\/em> Ti\u1ebfp t\u1ee5c ph\u00e2n t\u00edch t\u1eebng ti\u1ec3u qu\u00e1 tr\u00ecnh t\u1eeb s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1 th\u00e0nh c\u00e1c ti\u1ec3u 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 h\u1ee3p l\u00fd. M\u1ed7i c\u1ea5p \u0111\u1ed9 ti\u1ebfp theo cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft h\u01a1n v\u1ec1 h\u1ec7 th\u1ed1ng.<\/li>\n<li><em>C\u00e1ch th\u1ef1c hi\u1ec7n:<\/em> L\u1ea5y t\u1eebng ti\u1ec3u qu\u00e1 tr\u00ecnh t\u1eeb c\u1ea5p \u0111\u1ed9 tr\u01b0\u1edbc \u0111\u00f3 v\u00e0 ph\u00e2n t\u00edch s\u00e2u h\u01a1n. L\u1eb7p l\u1ea1i qu\u00e1 tr\u00ecnh n\u00e0y cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111\u1ebfn c\u1ea5p \u0111\u1ed9 m\u00e0 m\u1ed7i ti\u1ec3u qu\u00e1 tr\u00ecnh tr\u1edf n\u00ean d\u1ec5 hi\u1ec3u v\u00e0 d\u1ec5 qu\u1ea3n l\u00fd.<\/li>\n<li><em>\u01afu \u0111i\u1ec3m:<\/em>C\u00e1c c\u1ea5p \u0111\u1ed9 chi ti\u1ebft gi\u00fap trong vi\u1ec7c thi\u1ebft k\u1ebf v\u00e0 tri\u1ec3n khai t\u1eebng ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3. N\u00f3 h\u1ed7 tr\u1ee3 m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 h\u1ec7 th\u1ed1ng \u0111\u1ec3 hi\u1ec3u v\u00e0 qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\u00a0<\/p>\n<p><strong>\u01afu \u0111i\u1ec3m c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng:<\/strong><\/p>\n<ol>\n<li><strong>R\u00f5 r\u00e0ng:<\/strong>\n<ul>\n<li>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan r\u00f5 r\u00e0ng v\u00e0 s\u00fac t\u00edch v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n trong m\u1ed9t h\u1ec7 th\u1ed1ng, gi\u00fap c\u00e1c b\u00ean li\u00ean quan d\u1ec5 hi\u1ec3u h\u01a1n v\u1ec1 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Th\u1ee9 b\u1eadc:<\/strong>\n<ul>\n<li>Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng thi\u1ebft l\u1eadp m\u1ed9t th\u1ee9 b\u1eadc c\u00e1c ch\u1ee9c n\u0103ng, chia nh\u1ecf m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c th\u00e0nh ph\u1ea7n d\u1ec5 qu\u1ea3n l\u00fd v\u00e0 d\u1ec5 hi\u1ec3u.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Giao ti\u1ebfp:<\/strong>\n<ul>\n<li>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u00f3ng vai tr\u00f2 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 giao ti\u1ebfp m\u1ea1nh m\u1ebd gi\u1eefa c\u00e1c b\u00ean li\u00ean quan k\u1ef9 thu\u1eadt v\u00e0 phi k\u1ef9 thu\u1eadt. Ch\u00fang cung c\u1ea5p m\u1ed9t ng\u00f4n ng\u1eef chung \u0111\u1ec3 th\u1ea3o lu\u1eadn v\u00e0 hi\u1ec3u h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng:<\/strong>\n<ul>\n<li>Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng h\u01b0\u1edbng d\u1eabn qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1ch chia nh\u1ecf to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng th\u00e0nh c\u00e1c ph\u1ea7n nh\u1ecf h\u01a1n, d\u1ec5 qu\u1ea3n l\u00fd h\u01a1n. N\u00f3 h\u1ed7 tr\u1ee3 ph\u00e1t tri\u1ec3n c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 t\u00ednh module v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng l\u00e0 nh\u1eefng c\u00f4ng c\u1ee5 v\u00f4 gi\u00e1 trong ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. Ch\u00fang cung c\u1ea5p m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac v\u00e0 tr\u1ef1c quan \u0111\u1ec3 hi\u1ec3u, thi\u1ebft k\u1ebf v\u00e0 truy\u1ec1n \u0111\u1ea1t \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng. B\u1ea3n ch\u1ea5t th\u1ee9 b\u1eadc c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 vi\u1ec7c ph\u00e2n t\u00edch t\u1eebng b\u01b0\u1edbc th\u00f4ng qua ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng g\u00f3p ph\u1ea7n v\u00e0o th\u00e0nh c\u00f4ng c\u1ee7a c\u00e1c d\u1ef1 \u00e1n ph\u00e1t tri\u1ec3n h\u1ec7 th\u1ed1ng.<\/p>\n<p><strong>T\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng: Kh\u01a1i d\u1eady s\u1ee9c m\u1ea1nh c\u1ee7a c\u00f4ng c\u1ee5 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u t\u1eeb Visual Paradigm<\/strong><\/p>\n<p>\u0110i\u1ec1u h\u01b0\u1edbng c\u00e1c k\u00eanh th\u00f4ng tin ph\u1ee9c t\u1ea1p b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u00f2i h\u1ecfi s\u1ef1 ch\u00ednh x\u00e1c v\u00e0 r\u00f5 r\u00e0ng. H\u00e3y b\u01b0\u1edbc v\u00e0o th\u1ebf gi\u1edbi c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD), n\u01a1i m\u00e0 \u0111i\u1ec7u nh\u1ea3y ph\u1ee9c t\u1ea1p c\u1ee7a d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c tr\u1ef1c quan h\u00f3a v\u00e0 t\u1eadn d\u1ee5ng \u0111\u1ec3 ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng hi\u1ec7u qu\u1ea3. Trong th\u1eddi \u0111\u1ea1i c\u00f4ng ngh\u1ec7 hi\u1ec7n nay, nhu c\u1ea7u v\u1ec1 m\u1ed9t c\u00f4ng c\u1ee5 DFD tr\u1ef1c quan v\u00e0 m\u1ea1nh m\u1ebd l\u00e0 \u0111i\u1ec1u c\u1ea5p thi\u1ebft.<a href=\"https:\/\/www.visual-paradigm.com\/features\/data-flow-diagram-tool\/\">Visual Paradigm<\/a> n\u1ed5i b\u1eadt nh\u01b0 m\u1ed9t ng\u1ecdn h\u1ea3i \u0111\u0103ng trong l\u0129nh v\u1ef1c n\u00e0y, cung c\u1ea5p m\u1ed9t tr\u00ecnh ch\u1ec9nh s\u1eeda DFD d\u1ec5 s\u1eed d\u1ee5ng, gi\u00fap ng\u01b0\u1eddi d\u00f9ng t\u1ea1o ra nh\u1eefng bi\u1ec3u di\u1ec5n chi ti\u1ebft v\u00e0 s\u00e2u s\u1eafc v\u1ec1 lu\u1ed3ng th\u00f4ng tin trong h\u1ec7 th\u1ed1ng c\u1ee7a h\u1ecd.<\/p>\n<p><img alt=\"Easy-to-use Data Flow Diagram editor\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/10\/01-data-flow-diagram.png\"\/><\/p>\n<p><strong>T\u00ednh n\u0103ng c\u1ee7a c\u00f4ng c\u1ee5 DFD t\u1eeb Visual Paradigm:<\/strong><\/p>\n<ol>\n<li><strong>Tr\u00ecnh ch\u1ec9nh s\u1eeda d\u1ec5 s\u1eed d\u1ee5ng:<\/strong>\n<ul>\n<li>C\u00f4ng c\u1ee5 DFD c\u1ee7a Visual Paradigm \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi s\u1ef1 th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng. Tr\u00ecnh ch\u1ec9nh s\u1eeda d\u1ec5 s\u1eed d\u1ee5ng cho ph\u00e9p c\u1ea3 ng\u01b0\u1eddi m\u1edbi v\u00e0 ng\u01b0\u1eddi c\u00f3 kinh nghi\u1ec7m t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ph\u1ee9c t\u1ea1p m\u1ed9t c\u00e1ch li\u1ec1n m\u1ea1ch.<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u0110\u1ed9 ch\u00ednh x\u00e1c trong m\u00f4 h\u00ecnh h\u00f3a:<\/strong>\n<ul>\n<li>\u0110\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 ch\u00ednh x\u00e1c trong c\u00e1c s\u01a1 \u0111\u1ed3 DFD c\u1ee7a b\u1ea1n nh\u1edd v\u00e0o vi\u1ec7c t\u1ea1o h\u00ecnh d\u1ea1ng b\u1eb1ng thao t\u00e1c k\u00e9o v\u00e0 th\u1ea3, c\u00f9ng v\u1edbi vi\u1ec7c c\u0103n ch\u1ec9nh ch\u00ednh x\u00e1c v\u1ecb tr\u00ed h\u00ecnh d\u1ea1ng nh\u1edd c\u00e1c h\u01b0\u1edbng d\u1eabn c\u0103n ch\u1ec9nh. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n kh\u00f4ng ch\u1ec9 mang t\u00ednh th\u00f4ng tin m\u00e0 c\u00f2n c\u00f3 t\u00ednh th\u1ea9m m\u1ef9 cao.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng t\u00e1i s\u1eed d\u1ee5ng th\u00e0nh ph\u1ea7n:<\/strong>\n<ul>\n<li>Hi\u1ec7u qu\u1ea3 l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t, v\u00e0 Visual Paradigm hi\u1ec3u r\u00f5 \u0111i\u1ec1u \u0111\u00f3. C\u00f4ng c\u1ee5 n\u00e0y cho ph\u00e9p t\u00e1i s\u1eed d\u1ee5ng c\u00e1c th\u00e0nh ph\u1ea7n, ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 c\u00f4ng s\u1ee9c qu\u00fd gi\u00e1 trong qu\u00e1 tr\u00ecnh m\u00f4 h\u00ecnh h\u00f3a.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><strong>T\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u1edbi Visual Paradigm:<\/strong><\/p>\n<ol>\n<li><strong>X\u00e1c \u0111\u1ecbnh lu\u1ed3ng th\u00f4ng tin:<\/strong>\n<ul>\n<li>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u gi\u00fap ng\u01b0\u1eddi d\u00f9ng x\u00e1c \u0111\u1ecbnh lu\u1ed3ng th\u00f4ng tin b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m vi\u1ec7c hi\u1ec3u \u0111\u01b0\u1ee3c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a th\u00f4ng tin cho c\u00e1c th\u1ef1c th\u1ec3 ho\u1eb7c qu\u00e1 tr\u00ecnh con c\u1ee5 th\u1ec3 trong m\u1ed9t h\u1ec7 th\u1ed1ng ho\u1eb7c ph\u1ea1m vi quy tr\u00ecnh \u0111\u00e3 x\u00e1c \u0111\u1ecbnh.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Y\u00eau c\u1ea7u th\u00f4ng tin:<\/strong>\n<ul>\n<li>C\u00f4ng c\u1ee5 DFD c\u1ee7a Visual Paradigm h\u1ed7 tr\u1ee3 kh\u00e1m ph\u00e1 chi ti\u1ebft v\u1ec1 lo\u1ea1i v\u00e0 d\u1ea1ng th\u00f4ng tin c\u1ea7n thi\u1ebft \u0111\u1ec3 ho\u00e0n th\u00e0nh m\u1ed9t qu\u00e1 tr\u00ecnh c\u1ee5 th\u1ec3. M\u1ee9c \u0111\u1ed9 hi\u1ec3u bi\u1ebft n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t cho vi\u1ec7c ra quy\u1ebft \u0111\u1ecbnh hi\u1ec7u qu\u1ea3 v\u00e0 t\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><a href=\"https:\/\/www.youtube.com\/watch?v=0C8PeD8kq7U\">C\u00f4ng c\u1ee5 DFD c\u1ee7a Visual Paradigm<\/a> n\u1ed5i b\u1eadt nh\u01b0 m\u1ed9t c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd. Nh\u1eefng t\u00ednh n\u0103ng c\u1ee7a n\u00f3, t\u1eeb s\u1ef1 \u0111\u01a1n gi\u1ea3n trong thao t\u00e1c k\u00e9o v\u00e0 th\u1ea3 \u0111\u1ebfn kh\u1ea3 n\u0103ng m\u00f4 h\u00ecnh h\u00f3a ch\u00ednh x\u00e1c, gi\u00fap ng\u01b0\u1eddi d\u00f9ng t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 DFD kh\u00f4ng ch\u1ec9 l\u00e0m r\u00f5 nh\u1eefng chi ti\u1ebft ph\u1ee9c t\u1ea1p c\u1ee7a lu\u1ed3ng th\u00f4ng tin m\u00e0 c\u00f2n tr\u1edf th\u00e0nh t\u00e0i s\u1ea3n qu\u00fd gi\u00e1 cho c\u00e1c bu\u1ed5i tr\u00ecnh b\u00e0y v\u00e0 b\u00e1o c\u00e1o. Khi hi\u1ec7u qu\u1ea3 g\u1eb7p g\u1ee1 \u0111\u1ed9 ch\u00ednh x\u00e1c, k\u1ebft qu\u1ea3 l\u00e0 m\u1ed9t h\u00e0nh tr\u00ecnh li\u1ec1n m\u1ea1ch xuy\u00ean qua b\u1ee9c tranh ph\u1ee9c t\u1ea1p c\u1ee7a vi\u1ec7c hi\u1ec3u h\u1ec7 th\u1ed1ng, v\u00e0 c\u00f4ng c\u1ee5 DFD c\u1ee7a Visual Paradigm ch\u00ednh l\u00e0 chi\u1ebfc la b\u00e0n d\u1eabn \u0111\u01b0\u1eddng.<\/p>\n<h2><strong>T\u00f3m t\u1eaft<\/strong><\/h2>\n<p>Trong l\u0129nh v\u1ef1c h\u1ec7 th\u1ed1ng, s\u1ef1 r\u00f5 r\u00e0ng kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t th\u1ee9 xa x\u1ec9 m\u00e0 l\u00e0 m\u1ed9t \u0111i\u1ec1u c\u1ea7n thi\u1ebft. C\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u, v\u1edbi c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p c\u1ee7a ch\u00fang, v\u00e0 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng, v\u1edbi vi\u1ec7c ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng c\u00e1c ch\u1ee9c n\u0103ng, n\u1ed5i l\u00ean nh\u01b0 nh\u1eefng ng\u1ecdn h\u1ea3i \u0111\u0103ng d\u1eabn \u0111\u01b0\u1eddng \u0111\u1ebfn s\u1ef1 hi\u1ec3u bi\u1ebft.<\/p>\n<p>S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh \u0111\u1eb7t n\u1ec1n t\u1ea3ng, ti\u1ebft l\u1ed9 ranh gi\u1edbi v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c c\u1ee7a h\u1ec7 th\u1ed1ng. Khi ch\u00fang ta \u0111i s\u00e2u v\u00e0o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1 v\u00e0 c\u00e1c c\u1ea5p ti\u1ebfp theo, \u0111\u1ed9 chi ti\u1ebft t\u0103ng l\u00ean, cung c\u1ea5p m\u1ed9t b\u1ea3n \u0111\u1ed3 d\u1eabn \u0111\u01b0\u1eddng cho thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. Nh\u1eefng l\u1ee3i \u00edch l\u00e0 \u0111a d\u1ea1ng\u2014s\u1ef1 r\u00f5 r\u00e0ng, c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p, giao ti\u1ebfp hi\u1ec7u qu\u1ea3 v\u00e0 m\u1ed9t b\u1ea3n thi\u1ebft k\u1ebf m\u1eabu cho ph\u00e1t tri\u1ec3n h\u1ec7 th\u1ed1ng. C\u00f9ng nhau, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng m\u1edf ra c\u00e1nh c\u1eeda \u0111\u1ec3 hi\u1ec3u v\u00e0 qu\u1ea3n l\u00fd c\u00e1c ph\u1ee9c t\u1ea1p c\u1ee7a h\u1ec7 th\u1ed1ng, \u0111\u1ea3m b\u1ea3o m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p c\u00f3 c\u1ea5u tr\u00fac v\u00e0 \u0111\u01b0\u1ee3c th\u00f4ng tin \u0111\u1ea7y \u0111\u1ee7 trong ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng.<\/p>\n<p>\u00a0<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gi\u1edbi thi\u1ec7u Trong th\u1ebf gi\u1edbi ph\u1ee9c t\u1ea1p c\u1ee7a ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, s\u1ef1 r\u00f5 r\u00e0ng l\u00e0 \u0111i\u1ec1u t\u1ed1i quan tr\u1ecdng. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) v\u00e0 ngh\u1ec7 thu\u1eadt ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng\u2014nh\u1eefng c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd gi\u00fap l\u00e0m r\u00f5 s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a h\u1ec7 th\u1ed1ng, d\u1eabn d\u1eaft ch\u00fang ta qua cu\u1ed9c v\u0169 \u0111i\u1ec7u tinh vi c\u1ee7a d\u1eef li\u1ec7u. B\u00e0i vi\u1ebft n\u00e0y b\u1eaft \u0111\u1ea7u m\u1ed9t h\u00e0nh tr\u00ecnh l\u00e0m s\u00e1ng t\u1ecf nh\u1eefng kh\u00e1i ni\u1ec7m n\u00e0y, kh\u00e1m ph\u00e1 c\u00e1ch ch\u00fang k\u1ebft h\u1ee3p v\u1edbi nhau \u0111\u1ec3 cung c\u1ea5p c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. T\u1eeb c\u00e1i nh\u00ecn t\u1ed5ng quan c\u1ee7a s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh \u0111\u1ebfn chi ti\u1ebft tinh vi \u1edf c\u00e1c c\u1ea5p \u0111\u1ed9 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ti\u1ebfp theo, ch\u00fang ta \u0111i qua b\u1ee9c tranh ph\u00e2n t\u00edch c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ec3 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 t\u00ednh module v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng. Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 h\u00ecnh \u1ea3nh minh h\u1ecda c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n qua m\u1ed9t h\u1ec7 th\u1ed1ng, th\u1ec3 hi\u1ec7n c\u00e1c qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u, ngu\u1ed3n d\u1eef li\u1ec7u v\u00e0 \u0111\u00edch d\u1eef li\u1ec7u. Ch\u00fang cung c\u1ea5p m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng v\u00e0 s\u00fac t\u00edch \u0111\u1ec3 hi\u1ec3u ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1ch th\u00f4ng tin di chuy\u1ec3n b\u00ean trong n\u00f3. Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng: Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng l\u00e0 qu\u00e1 tr\u00ecnh chia nh\u1ecf m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c ti\u1ec3u h\u1ec7 th\u1ed1ng ho\u1eb7c ch\u1ee9c n\u0103ng nh\u1ecf h\u01a1n, d\u1ec5 qu\u1ea3n l\u00fd h\u01a1n. N\u00f3 gi\u00fap hi\u1ec3u r\u00f5 c\u1ea5u tr\u00fac v\u00e0 th\u1ee9 b\u1eadc c\u1ee7a h\u1ec7 th\u1ed1ng, l\u00e0m cho vi\u1ec7c ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n. C\u00e1c c\u1ea5p \u0111\u1ed9 c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): S\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh: M\u1ee5c \u0111\u00edch: S\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh cung c\u1ea5p c\u00e1i nh\u00ecn t\u1ed5ng quan v\u1ec1 to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. N\u00f3 th\u1ec3 hi\u1ec7n h\u1ec7 th\u1ed1ng nh\u01b0 m\u1ed9t qu\u00e1 tr\u00ecnh duy nh\u1ea5t v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i t\u01b0\u01a1ng t\u00e1c v\u1edbi n\u00f3. S\u01a1 \u0111\u1ed3 n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 hi\u1ec3u ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0o v\u00e0 ra kh\u1ecfi h\u1ec7 th\u1ed1ng. C\u00e1ch th\u1ef1c hi\u1ec7n: B\u1eaft \u0111\u1ea7u b\u1eb1ng m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt \u0111\u1ea1i di\u1ec7n cho to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng (qu\u00e1 tr\u00ecnh) v\u00e0 g\u00e1n nh\u00e3n cho n\u00f3. Sau \u0111\u00f3, x\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i (ngu\u1ed3n ho\u1eb7c \u0111\u00edch c\u1ee7a d\u1eef li\u1ec7u) v\u00e0 k\u1ebft n\u1ed1i ch\u00fang v\u1edbi h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1c m\u0169i t\u00ean th\u1ec3 hi\u1ec7n lu\u1ed3ng d\u1eef li\u1ec7u. \u01afu \u0111i\u1ec3m: S\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh l\u00e0m \u0111\u01a1n gi\u1ea3n h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p, gi\u00fap ch\u00fang d\u1ec5 hi\u1ec3u h\u01a1n. \u0110\u00e2y l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 giao ti\u1ebfp qu\u00fd gi\u00e1 gi\u1eefa c\u00e1c b\u00ean li\u00ean quan, gi\u00fap h\u1ecd hi\u1ec3u c\u00e1c t\u01b0\u01a1ng t\u00e1c trong h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng c\u1ea7n \u0111i s\u00e2u v\u00e0o chi ti\u1ebft ph\u1ee9c t\u1ea1p. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1: M\u1ee5c \u0111\u00edch: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1 \u0111i s\u00e2u h\u01a1n v\u00e0o h\u1ec7 th\u1ed1ng, chia nh\u1ecf qu\u00e1 tr\u00ecnh ch\u00ednh th\u00e0nh c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh ch\u00ednh. N\u00f3 cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft h\u01a1n v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n b\u00ean trong h\u1ec7 th\u1ed1ng. C\u00e1ch th\u1ef1c hi\u1ec7n: L\u1ea5y qu\u00e1 tr\u00ecnh ch\u00ednh t\u1eeb s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh v\u00e0 chia nh\u1ecf n\u00f3 th\u00e0nh c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh ch\u00ednh. K\u1ebft n\u1ed1i c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh n\u00e0y b\u1eb1ng c\u00e1c m\u0169i t\u00ean th\u1ec3 hi\u1ec7n lu\u1ed3ng d\u1eef li\u1ec7u. C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i v\u1eabn gi\u1eef nguy\u00ean \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y, t\u01b0\u01a1ng t\u00e1c v\u1edbi qu\u00e1 tr\u00ecnh ch\u00ednh v\u00e0 c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh. \u01afu \u0111i\u1ec3m: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1 gi\u00fap hi\u1ec3u r\u00f5 c\u00e1c ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang. N\u00f3 t\u1ea1o n\u1ec1n t\u1ea3ng cho vi\u1ec7c ph\u00e2n t\u00edch s\u00e2u h\u01a1n v\u00e0o c\u00e1c c\u1ea5p \u0111\u1ed9 chi ti\u1ebft h\u01a1n. C\u00e1c c\u1ea5p \u0111\u1ed9 ti\u1ebfp theo c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: M\u1ee5c \u0111\u00edch: Ti\u1ebfp t\u1ee5c ph\u00e2n t\u00edch t\u1eebng ti\u1ec3u qu\u00e1 tr\u00ecnh t\u1eeb s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1 th\u00e0nh c\u00e1c ti\u1ec3u 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 h\u1ee3p l\u00fd. M\u1ed7i c\u1ea5p \u0111\u1ed9 ti\u1ebfp theo cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft h\u01a1n v\u1ec1 h\u1ec7 th\u1ed1ng. C\u00e1ch th\u1ef1c hi\u1ec7n: L\u1ea5y t\u1eebng ti\u1ec3u qu\u00e1 tr\u00ecnh t\u1eeb c\u1ea5p \u0111\u1ed9 tr\u01b0\u1edbc \u0111\u00f3 v\u00e0 ph\u00e2n t\u00edch s\u00e2u h\u01a1n. L\u1eb7p l\u1ea1i qu\u00e1 tr\u00ecnh n\u00e0y cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111\u1ebfn c\u1ea5p \u0111\u1ed9 m\u00e0 m\u1ed7i ti\u1ec3u qu\u00e1 tr\u00ecnh tr\u1edf n\u00ean d\u1ec5 hi\u1ec3u v\u00e0 d\u1ec5 qu\u1ea3n l\u00fd. \u01afu \u0111i\u1ec3m:C\u00e1c c\u1ea5p \u0111\u1ed9 chi ti\u1ebft gi\u00fap trong vi\u1ec7c thi\u1ebft k\u1ebf v\u00e0 tri\u1ec3n khai t\u1eebng ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3. N\u00f3 h\u1ed7 tr\u1ee3 m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 h\u1ec7 th\u1ed1ng \u0111\u1ec3 hi\u1ec3u v\u00e0 qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng. \u00a0 \u01afu \u0111i\u1ec3m c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng: R\u00f5 r\u00e0ng: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan r\u00f5 r\u00e0ng v\u00e0 s\u00fac t\u00edch v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n trong m\u1ed9t h\u1ec7 th\u1ed1ng, gi\u00fap c\u00e1c b\u00ean li\u00ean quan d\u1ec5 hi\u1ec3u h\u01a1n v\u1ec1 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. Th\u1ee9 b\u1eadc: Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng thi\u1ebft l\u1eadp m\u1ed9t th\u1ee9 b\u1eadc c\u00e1c ch\u1ee9c n\u0103ng, chia nh\u1ecf m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c th\u00e0nh ph\u1ea7n d\u1ec5 qu\u1ea3n l\u00fd v\u00e0 d\u1ec5 hi\u1ec3u. Giao ti\u1ebfp: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u00f3ng vai tr\u00f2 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 giao ti\u1ebfp m\u1ea1nh m\u1ebd gi\u1eefa c\u00e1c b\u00ean li\u00ean quan k\u1ef9 thu\u1eadt v\u00e0 phi k\u1ef9 thu\u1eadt. Ch\u00fang cung c\u1ea5p m\u1ed9t ng\u00f4n ng\u1eef chung \u0111\u1ec3 th\u1ea3o lu\u1eadn v\u00e0 hi\u1ec3u h\u1ec7 th\u1ed1ng. Thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng: Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng h\u01b0\u1edbng d\u1eabn qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1ch chia nh\u1ecf to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng th\u00e0nh c\u00e1c ph\u1ea7n nh\u1ecf h\u01a1n, d\u1ec5 qu\u1ea3n l\u00fd h\u01a1n. N\u00f3 h\u1ed7 tr\u1ee3 ph\u00e1t tri\u1ec3n c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 t\u00ednh module v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng l\u00e0 nh\u1eefng c\u00f4ng c\u1ee5 v\u00f4 gi\u00e1 trong ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. Ch\u00fang cung c\u1ea5p m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac v\u00e0 tr\u1ef1c quan \u0111\u1ec3 hi\u1ec3u, thi\u1ebft k\u1ebf v\u00e0 truy\u1ec1n \u0111\u1ea1t \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng. B\u1ea3n ch\u1ea5t th\u1ee9 b\u1eadc c\u1ee7a s\u01a1 \u0111\u1ed3<a href=\"https:\/\/guides.visual-paradigm.com\/vn\/unveiling-the-complexity-a-guide-to-functional-decomposition-and-data-flow-diagrams-in-system-analysis\/\" rel=\"bookmark\"><span class=\"screen-reader-text\">B\u00f3c t\u00e1ch s\u1ef1 ph\u1ee9c t\u1ea1p: H\u01b0\u1edbng d\u1eabn v\u1ec1 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng v\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng<\/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-6377","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>B\u00f3c t\u00e1ch s\u1ef1 ph\u1ee9c t\u1ea1p: H\u01b0\u1edbng d\u1eabn v\u1ec1 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng v\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng - 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\/unveiling-the-complexity-a-guide-to-functional-decomposition-and-data-flow-diagrams-in-system-analysis\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"B\u00f3c t\u00e1ch s\u1ef1 ph\u1ee9c t\u1ea1p: H\u01b0\u1edbng d\u1eabn v\u1ec1 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng v\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng - Visual Paradigm Guides Vietnamese\" \/>\n<meta property=\"og:description\" content=\"Gi\u1edbi thi\u1ec7u Trong th\u1ebf gi\u1edbi ph\u1ee9c t\u1ea1p c\u1ee7a ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, s\u1ef1 r\u00f5 r\u00e0ng l\u00e0 \u0111i\u1ec1u t\u1ed1i quan tr\u1ecdng. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) v\u00e0 ngh\u1ec7 thu\u1eadt ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng\u2014nh\u1eefng c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd gi\u00fap l\u00e0m r\u00f5 s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a h\u1ec7 th\u1ed1ng, d\u1eabn d\u1eaft ch\u00fang ta qua cu\u1ed9c v\u0169 \u0111i\u1ec7u tinh vi c\u1ee7a d\u1eef li\u1ec7u. B\u00e0i vi\u1ebft n\u00e0y b\u1eaft \u0111\u1ea7u m\u1ed9t h\u00e0nh tr\u00ecnh l\u00e0m s\u00e1ng t\u1ecf nh\u1eefng kh\u00e1i ni\u1ec7m n\u00e0y, kh\u00e1m ph\u00e1 c\u00e1ch ch\u00fang k\u1ebft h\u1ee3p v\u1edbi nhau \u0111\u1ec3 cung c\u1ea5p c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. T\u1eeb c\u00e1i nh\u00ecn t\u1ed5ng quan c\u1ee7a s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh \u0111\u1ebfn chi ti\u1ebft tinh vi \u1edf c\u00e1c c\u1ea5p \u0111\u1ed9 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ti\u1ebfp theo, ch\u00fang ta \u0111i qua b\u1ee9c tranh ph\u00e2n t\u00edch c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ec3 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 t\u00ednh module v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng. Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 h\u00ecnh \u1ea3nh minh h\u1ecda c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n qua m\u1ed9t h\u1ec7 th\u1ed1ng, th\u1ec3 hi\u1ec7n c\u00e1c qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u, ngu\u1ed3n d\u1eef li\u1ec7u v\u00e0 \u0111\u00edch d\u1eef li\u1ec7u. Ch\u00fang cung c\u1ea5p m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng v\u00e0 s\u00fac t\u00edch \u0111\u1ec3 hi\u1ec3u ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1ch th\u00f4ng tin di chuy\u1ec3n b\u00ean trong n\u00f3. Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng: Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng l\u00e0 qu\u00e1 tr\u00ecnh chia nh\u1ecf m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c ti\u1ec3u h\u1ec7 th\u1ed1ng ho\u1eb7c ch\u1ee9c n\u0103ng nh\u1ecf h\u01a1n, d\u1ec5 qu\u1ea3n l\u00fd h\u01a1n. N\u00f3 gi\u00fap hi\u1ec3u r\u00f5 c\u1ea5u tr\u00fac v\u00e0 th\u1ee9 b\u1eadc c\u1ee7a h\u1ec7 th\u1ed1ng, l\u00e0m cho vi\u1ec7c ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n. C\u00e1c c\u1ea5p \u0111\u1ed9 c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): S\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh: M\u1ee5c \u0111\u00edch: S\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh cung c\u1ea5p c\u00e1i nh\u00ecn t\u1ed5ng quan v\u1ec1 to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. N\u00f3 th\u1ec3 hi\u1ec7n h\u1ec7 th\u1ed1ng nh\u01b0 m\u1ed9t qu\u00e1 tr\u00ecnh duy nh\u1ea5t v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i t\u01b0\u01a1ng t\u00e1c v\u1edbi n\u00f3. S\u01a1 \u0111\u1ed3 n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 hi\u1ec3u ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0o v\u00e0 ra kh\u1ecfi h\u1ec7 th\u1ed1ng. C\u00e1ch th\u1ef1c hi\u1ec7n: B\u1eaft \u0111\u1ea7u b\u1eb1ng m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt \u0111\u1ea1i di\u1ec7n cho to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng (qu\u00e1 tr\u00ecnh) v\u00e0 g\u00e1n nh\u00e3n cho n\u00f3. Sau \u0111\u00f3, x\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i (ngu\u1ed3n ho\u1eb7c \u0111\u00edch c\u1ee7a d\u1eef li\u1ec7u) v\u00e0 k\u1ebft n\u1ed1i ch\u00fang v\u1edbi h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1c m\u0169i t\u00ean th\u1ec3 hi\u1ec7n lu\u1ed3ng d\u1eef li\u1ec7u. \u01afu \u0111i\u1ec3m: S\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh l\u00e0m \u0111\u01a1n gi\u1ea3n h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p, gi\u00fap ch\u00fang d\u1ec5 hi\u1ec3u h\u01a1n. \u0110\u00e2y l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 giao ti\u1ebfp qu\u00fd gi\u00e1 gi\u1eefa c\u00e1c b\u00ean li\u00ean quan, gi\u00fap h\u1ecd hi\u1ec3u c\u00e1c t\u01b0\u01a1ng t\u00e1c trong h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng c\u1ea7n \u0111i s\u00e2u v\u00e0o chi ti\u1ebft ph\u1ee9c t\u1ea1p. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1: M\u1ee5c \u0111\u00edch: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1 \u0111i s\u00e2u h\u01a1n v\u00e0o h\u1ec7 th\u1ed1ng, chia nh\u1ecf qu\u00e1 tr\u00ecnh ch\u00ednh th\u00e0nh c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh ch\u00ednh. N\u00f3 cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft h\u01a1n v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n b\u00ean trong h\u1ec7 th\u1ed1ng. C\u00e1ch th\u1ef1c hi\u1ec7n: L\u1ea5y qu\u00e1 tr\u00ecnh ch\u00ednh t\u1eeb s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh v\u00e0 chia nh\u1ecf n\u00f3 th\u00e0nh c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh ch\u00ednh. K\u1ebft n\u1ed1i c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh n\u00e0y b\u1eb1ng c\u00e1c m\u0169i t\u00ean th\u1ec3 hi\u1ec7n lu\u1ed3ng d\u1eef li\u1ec7u. C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i v\u1eabn gi\u1eef nguy\u00ean \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y, t\u01b0\u01a1ng t\u00e1c v\u1edbi qu\u00e1 tr\u00ecnh ch\u00ednh v\u00e0 c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh. \u01afu \u0111i\u1ec3m: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1 gi\u00fap hi\u1ec3u r\u00f5 c\u00e1c ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang. N\u00f3 t\u1ea1o n\u1ec1n t\u1ea3ng cho vi\u1ec7c ph\u00e2n t\u00edch s\u00e2u h\u01a1n v\u00e0o c\u00e1c c\u1ea5p \u0111\u1ed9 chi ti\u1ebft h\u01a1n. C\u00e1c c\u1ea5p \u0111\u1ed9 ti\u1ebfp theo c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: M\u1ee5c \u0111\u00edch: Ti\u1ebfp t\u1ee5c ph\u00e2n t\u00edch t\u1eebng ti\u1ec3u qu\u00e1 tr\u00ecnh t\u1eeb s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1 th\u00e0nh c\u00e1c ti\u1ec3u 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 h\u1ee3p l\u00fd. M\u1ed7i c\u1ea5p \u0111\u1ed9 ti\u1ebfp theo cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft h\u01a1n v\u1ec1 h\u1ec7 th\u1ed1ng. C\u00e1ch th\u1ef1c hi\u1ec7n: L\u1ea5y t\u1eebng ti\u1ec3u qu\u00e1 tr\u00ecnh t\u1eeb c\u1ea5p \u0111\u1ed9 tr\u01b0\u1edbc \u0111\u00f3 v\u00e0 ph\u00e2n t\u00edch s\u00e2u h\u01a1n. L\u1eb7p l\u1ea1i qu\u00e1 tr\u00ecnh n\u00e0y cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111\u1ebfn c\u1ea5p \u0111\u1ed9 m\u00e0 m\u1ed7i ti\u1ec3u qu\u00e1 tr\u00ecnh tr\u1edf n\u00ean d\u1ec5 hi\u1ec3u v\u00e0 d\u1ec5 qu\u1ea3n l\u00fd. \u01afu \u0111i\u1ec3m:C\u00e1c c\u1ea5p \u0111\u1ed9 chi ti\u1ebft gi\u00fap trong vi\u1ec7c thi\u1ebft k\u1ebf v\u00e0 tri\u1ec3n khai t\u1eebng ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3. N\u00f3 h\u1ed7 tr\u1ee3 m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 h\u1ec7 th\u1ed1ng \u0111\u1ec3 hi\u1ec3u v\u00e0 qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng. \u00a0 \u01afu \u0111i\u1ec3m c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng: R\u00f5 r\u00e0ng: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan r\u00f5 r\u00e0ng v\u00e0 s\u00fac t\u00edch v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n trong m\u1ed9t h\u1ec7 th\u1ed1ng, gi\u00fap c\u00e1c b\u00ean li\u00ean quan d\u1ec5 hi\u1ec3u h\u01a1n v\u1ec1 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. Th\u1ee9 b\u1eadc: Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng thi\u1ebft l\u1eadp m\u1ed9t th\u1ee9 b\u1eadc c\u00e1c ch\u1ee9c n\u0103ng, chia nh\u1ecf m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c th\u00e0nh ph\u1ea7n d\u1ec5 qu\u1ea3n l\u00fd v\u00e0 d\u1ec5 hi\u1ec3u. Giao ti\u1ebfp: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u00f3ng vai tr\u00f2 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 giao ti\u1ebfp m\u1ea1nh m\u1ebd gi\u1eefa c\u00e1c b\u00ean li\u00ean quan k\u1ef9 thu\u1eadt v\u00e0 phi k\u1ef9 thu\u1eadt. Ch\u00fang cung c\u1ea5p m\u1ed9t ng\u00f4n ng\u1eef chung \u0111\u1ec3 th\u1ea3o lu\u1eadn v\u00e0 hi\u1ec3u h\u1ec7 th\u1ed1ng. Thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng: Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng h\u01b0\u1edbng d\u1eabn qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1ch chia nh\u1ecf to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng th\u00e0nh c\u00e1c ph\u1ea7n nh\u1ecf h\u01a1n, d\u1ec5 qu\u1ea3n l\u00fd h\u01a1n. N\u00f3 h\u1ed7 tr\u1ee3 ph\u00e1t tri\u1ec3n c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 t\u00ednh module v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng l\u00e0 nh\u1eefng c\u00f4ng c\u1ee5 v\u00f4 gi\u00e1 trong ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. Ch\u00fang cung c\u1ea5p m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac v\u00e0 tr\u1ef1c quan \u0111\u1ec3 hi\u1ec3u, thi\u1ebft k\u1ebf v\u00e0 truy\u1ec1n \u0111\u1ea1t \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng. 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Visual Paradigm Guides Vietnamese","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/guides.visual-paradigm.com\/vn\/unveiling-the-complexity-a-guide-to-functional-decomposition-and-data-flow-diagrams-in-system-analysis\/","og_locale":"vi_VN","og_type":"article","og_title":"B\u00f3c t\u00e1ch s\u1ef1 ph\u1ee9c t\u1ea1p: H\u01b0\u1edbng d\u1eabn v\u1ec1 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng v\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng - Visual Paradigm Guides Vietnamese","og_description":"Gi\u1edbi thi\u1ec7u Trong th\u1ebf gi\u1edbi ph\u1ee9c t\u1ea1p c\u1ee7a ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, s\u1ef1 r\u00f5 r\u00e0ng l\u00e0 \u0111i\u1ec1u t\u1ed1i quan tr\u1ecdng. H\u00e3y c\u00f9ng kh\u00e1m ph\u00e1S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) v\u00e0 ngh\u1ec7 thu\u1eadt ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng\u2014nh\u1eefng c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd gi\u00fap l\u00e0m r\u00f5 s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a h\u1ec7 th\u1ed1ng, d\u1eabn d\u1eaft ch\u00fang ta qua cu\u1ed9c v\u0169 \u0111i\u1ec7u tinh vi c\u1ee7a d\u1eef li\u1ec7u. B\u00e0i vi\u1ebft n\u00e0y b\u1eaft \u0111\u1ea7u m\u1ed9t h\u00e0nh tr\u00ecnh l\u00e0m s\u00e1ng t\u1ecf nh\u1eefng kh\u00e1i ni\u1ec7m n\u00e0y, kh\u00e1m ph\u00e1 c\u00e1ch ch\u00fang k\u1ebft h\u1ee3p v\u1edbi nhau \u0111\u1ec3 cung c\u1ea5p c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. T\u1eeb c\u00e1i nh\u00ecn t\u1ed5ng quan c\u1ee7a s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh \u0111\u1ebfn chi ti\u1ebft tinh vi \u1edf c\u00e1c c\u1ea5p \u0111\u1ed9 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ti\u1ebfp theo, ch\u00fang ta \u0111i qua b\u1ee9c tranh ph\u00e2n t\u00edch c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ec3 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 t\u00ednh module v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng. Hi\u1ec3u v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 h\u00ecnh \u1ea3nh minh h\u1ecda c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n qua m\u1ed9t h\u1ec7 th\u1ed1ng, th\u1ec3 hi\u1ec7n c\u00e1c qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u, ngu\u1ed3n d\u1eef li\u1ec7u v\u00e0 \u0111\u00edch d\u1eef li\u1ec7u. Ch\u00fang cung c\u1ea5p m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng v\u00e0 s\u00fac t\u00edch \u0111\u1ec3 hi\u1ec3u ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1ch th\u00f4ng tin di chuy\u1ec3n b\u00ean trong n\u00f3. Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng: Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng l\u00e0 qu\u00e1 tr\u00ecnh chia nh\u1ecf m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c ti\u1ec3u h\u1ec7 th\u1ed1ng ho\u1eb7c ch\u1ee9c n\u0103ng nh\u1ecf h\u01a1n, d\u1ec5 qu\u1ea3n l\u00fd h\u01a1n. N\u00f3 gi\u00fap hi\u1ec3u r\u00f5 c\u1ea5u tr\u00fac v\u00e0 th\u1ee9 b\u1eadc c\u1ee7a h\u1ec7 th\u1ed1ng, l\u00e0m cho vi\u1ec7c ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n. C\u00e1c c\u1ea5p \u0111\u1ed9 c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD): S\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh: M\u1ee5c \u0111\u00edch: S\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh cung c\u1ea5p c\u00e1i nh\u00ecn t\u1ed5ng quan v\u1ec1 to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. N\u00f3 th\u1ec3 hi\u1ec7n h\u1ec7 th\u1ed1ng nh\u01b0 m\u1ed9t qu\u00e1 tr\u00ecnh duy nh\u1ea5t v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i t\u01b0\u01a1ng t\u00e1c v\u1edbi n\u00f3. S\u01a1 \u0111\u1ed3 n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 hi\u1ec3u ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0o v\u00e0 ra kh\u1ecfi h\u1ec7 th\u1ed1ng. C\u00e1ch th\u1ef1c hi\u1ec7n: B\u1eaft \u0111\u1ea7u b\u1eb1ng m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt \u0111\u1ea1i di\u1ec7n cho to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng (qu\u00e1 tr\u00ecnh) v\u00e0 g\u00e1n nh\u00e3n cho n\u00f3. Sau \u0111\u00f3, x\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i (ngu\u1ed3n ho\u1eb7c \u0111\u00edch c\u1ee7a d\u1eef li\u1ec7u) v\u00e0 k\u1ebft n\u1ed1i ch\u00fang v\u1edbi h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1c m\u0169i t\u00ean th\u1ec3 hi\u1ec7n lu\u1ed3ng d\u1eef li\u1ec7u. \u01afu \u0111i\u1ec3m: S\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh l\u00e0m \u0111\u01a1n gi\u1ea3n h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p, gi\u00fap ch\u00fang d\u1ec5 hi\u1ec3u h\u01a1n. \u0110\u00e2y l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 giao ti\u1ebfp qu\u00fd gi\u00e1 gi\u1eefa c\u00e1c b\u00ean li\u00ean quan, gi\u00fap h\u1ecd hi\u1ec3u c\u00e1c t\u01b0\u01a1ng t\u00e1c trong h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng c\u1ea7n \u0111i s\u00e2u v\u00e0o chi ti\u1ebft ph\u1ee9c t\u1ea1p. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1: M\u1ee5c \u0111\u00edch: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1 \u0111i s\u00e2u h\u01a1n v\u00e0o h\u1ec7 th\u1ed1ng, chia nh\u1ecf qu\u00e1 tr\u00ecnh ch\u00ednh th\u00e0nh c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh ch\u00ednh. N\u00f3 cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft h\u01a1n v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n b\u00ean trong h\u1ec7 th\u1ed1ng. C\u00e1ch th\u1ef1c hi\u1ec7n: L\u1ea5y qu\u00e1 tr\u00ecnh ch\u00ednh t\u1eeb s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh v\u00e0 chia nh\u1ecf n\u00f3 th\u00e0nh c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh ch\u00ednh. K\u1ebft n\u1ed1i c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh n\u00e0y b\u1eb1ng c\u00e1c m\u0169i t\u00ean th\u1ec3 hi\u1ec7n lu\u1ed3ng d\u1eef li\u1ec7u. C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i v\u1eabn gi\u1eef nguy\u00ean \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y, t\u01b0\u01a1ng t\u00e1c v\u1edbi qu\u00e1 tr\u00ecnh ch\u00ednh v\u00e0 c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh. \u01afu \u0111i\u1ec3m: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1 gi\u00fap hi\u1ec3u r\u00f5 c\u00e1c ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang. N\u00f3 t\u1ea1o n\u1ec1n t\u1ea3ng cho vi\u1ec7c ph\u00e2n t\u00edch s\u00e2u h\u01a1n v\u00e0o c\u00e1c c\u1ea5p \u0111\u1ed9 chi ti\u1ebft h\u01a1n. C\u00e1c c\u1ea5p \u0111\u1ed9 ti\u1ebfp theo c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: M\u1ee5c \u0111\u00edch: Ti\u1ebfp t\u1ee5c ph\u00e2n t\u00edch t\u1eebng ti\u1ec3u qu\u00e1 tr\u00ecnh t\u1eeb s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 1 th\u00e0nh c\u00e1c ti\u1ec3u 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 h\u1ee3p l\u00fd. M\u1ed7i c\u1ea5p \u0111\u1ed9 ti\u1ebfp theo cung c\u1ea5p c\u00e1i nh\u00ecn chi ti\u1ebft h\u01a1n v\u1ec1 h\u1ec7 th\u1ed1ng. C\u00e1ch th\u1ef1c hi\u1ec7n: L\u1ea5y t\u1eebng ti\u1ec3u qu\u00e1 tr\u00ecnh t\u1eeb c\u1ea5p \u0111\u1ed9 tr\u01b0\u1edbc \u0111\u00f3 v\u00e0 ph\u00e2n t\u00edch s\u00e2u h\u01a1n. 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N\u00f3 h\u1ed7 tr\u1ee3 m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 h\u1ec7 th\u1ed1ng \u0111\u1ec3 hi\u1ec3u v\u00e0 qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng. \u00a0 \u01afu \u0111i\u1ec3m c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng: R\u00f5 r\u00e0ng: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan r\u00f5 r\u00e0ng v\u00e0 s\u00fac t\u00edch v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n trong m\u1ed9t h\u1ec7 th\u1ed1ng, gi\u00fap c\u00e1c b\u00ean li\u00ean quan d\u1ec5 hi\u1ec3u h\u01a1n v\u1ec1 ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. Th\u1ee9 b\u1eadc: Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng thi\u1ebft l\u1eadp m\u1ed9t th\u1ee9 b\u1eadc c\u00e1c ch\u1ee9c n\u0103ng, chia nh\u1ecf m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c th\u00e0nh ph\u1ea7n d\u1ec5 qu\u1ea3n l\u00fd v\u00e0 d\u1ec5 hi\u1ec3u. Giao ti\u1ebfp: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u00f3ng vai tr\u00f2 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 giao ti\u1ebfp m\u1ea1nh m\u1ebd gi\u1eefa c\u00e1c b\u00ean li\u00ean quan k\u1ef9 thu\u1eadt v\u00e0 phi k\u1ef9 thu\u1eadt. Ch\u00fang cung c\u1ea5p m\u1ed9t ng\u00f4n ng\u1eef chung \u0111\u1ec3 th\u1ea3o lu\u1eadn v\u00e0 hi\u1ec3u h\u1ec7 th\u1ed1ng. Thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng: Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng h\u01b0\u1edbng d\u1eabn qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1ch chia nh\u1ecf to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng th\u00e0nh c\u00e1c ph\u1ea7n nh\u1ecf h\u01a1n, d\u1ec5 qu\u1ea3n l\u00fd h\u01a1n. N\u00f3 h\u1ed7 tr\u1ee3 ph\u00e1t tri\u1ec3n c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 t\u00ednh module v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng l\u00e0 nh\u1eefng c\u00f4ng c\u1ee5 v\u00f4 gi\u00e1 trong ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. Ch\u00fang cung c\u1ea5p m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac v\u00e0 tr\u1ef1c quan \u0111\u1ec3 hi\u1ec3u, thi\u1ebft k\u1ebf v\u00e0 truy\u1ec1n \u0111\u1ea1t \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng. 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