{"id":4068,"date":"2026-03-28T20:15:11","date_gmt":"2026-03-28T20:15:11","guid":{"rendered":"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/"},"modified":"2026-03-28T20:15:11","modified_gmt":"2026-03-28T20:15:11","slug":"how-to-validate-your-dfd-step-by-step-review","status":"publish","type":"post","link":"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c minh DFD c\u1ee7a b\u1ea1n: Quy tr\u00ecnh xem x\u00e9t t\u1eebng b\u01b0\u1edbc"},"content":{"rendered":"

Vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) l\u00e0 m\u1ed9t m\u1ed1c quan tr\u1ecdng trong ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. N\u00f3 m\u00f4 t\u1ea3 s\u1ef1 di chuy\u1ec3n c\u1ee7a d\u1eef li\u1ec7u qua h\u1ec7 th\u1ed1ng, x\u00e1c \u0111\u1ecbnh c\u00e1ch th\u00f4ng tin \u0111\u01b0\u1ee3c x\u1eed l\u00fd, l\u01b0u tr\u1eef v\u00e0 chuy\u1ec3n giao. Tuy nhi\u00ean, m\u1ed9t s\u01a1 \u0111\u1ed3 tr\u00f4ng h\u1ea5p d\u1eabn v\u1ec1 m\u1eb7t th\u1ecb gi\u00e1c kh\u00f4ng nh\u1ea5t thi\u1ebft ch\u00ednh x\u00e1c v\u1ec1 m\u1eb7t ch\u1ee9c n\u0103ng. X\u00e1c minh l\u00e0 giai \u0111o\u1ea1n then ch\u1ed1t khi b\u1ea1n ki\u1ec3m tra xem s\u01a1 \u0111\u1ed3 c\u00f3 \u0111\u1ea1i di\u1ec7n \u0111\u00fang y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng c\u00f3 l\u1ed7i logic hay kh\u00f4ng. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u1ea3m b\u1ea3o c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u nh\u1ea5t qu\u00e1n, c\u00e1c qu\u00e1 tr\u00ecnh \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng v\u00e0 c\u1ea5u tr\u00fac h\u1ed7 tr\u1ee3 logic kinh doanh mong mu\u1ed1n.<\/p>\n

Vi\u1ec7c x\u00e1c minh kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t h\u00e0nh \u0111\u1ed9ng \u0111\u01a1n l\u1ebb m\u00e0 l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh xem x\u00e9t c\u00f3 k\u1ef7 lu\u1eadt. N\u00f3 \u0111\u00f2i h\u1ecfi c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 h\u1ec7 th\u1ed1ng \u0111\u1ec3 ki\u1ec3m tra t\u1eebng y\u1ebfu t\u1ed1 theo c\u00e1c quy t\u1eafc \u0111\u00e3 thi\u1ebft l\u1eadp. B\u1eb1ng c\u00e1ch tu\u00e2n theo quy tr\u00ecnh xem x\u00e9t c\u00f3 c\u1ea5u tr\u00fac, b\u1ea1n lo\u1ea1i b\u1ecf s\u1ef1 m\u01a1 h\u1ed3 v\u00e0 \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 tr\u1edf th\u00e0nh b\u1ea3n v\u1ebd thi\u1ebft k\u1ebf \u0111\u00e1ng tin c\u1eady cho ph\u00e1t tri\u1ec3n v\u00e0 giao ti\u1ebfp v\u1edbi c\u00e1c b\u00ean li\u00ean quan. H\u01b0\u1edbng d\u1eabn n\u00e0y n\u00eau r\u00f5 c\u00e1c b\u01b0\u1edbc to\u00e0n di\u1ec7n c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u00e1c minh DFD c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n trong to\u00e0n b\u1ed9 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng.<\/p>\n

\n
\"Chibi-style<\/figure>\n<\/div>\n

\ud83d\udee0\ufe0f Hi\u1ec3u r\u00f5 m\u1ee5c \u0111\u00edch c\u1ee7a vi\u1ec7c x\u00e1c minh<\/h2>\n

Tr\u01b0\u1edbc khi \u0111i v\u00e0o c\u00e1c b\u01b0\u1edbc c\u1ee5 th\u1ec3, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i hi\u1ec3u x\u00e1c minh \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u g\u00ec trong b\u1ed1i c\u1ea3nh thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. Ki\u1ec3m tra h\u1ecfi: ‘Ch\u00fang ta c\u00f3 \u0111ang x\u00e2y d\u1ef1ng s\u1ea3n ph\u1ea9m \u0111\u00fang c\u00e1ch kh\u00f4ng?’ X\u00e1c minh h\u1ecfi: ‘Ch\u00fang ta c\u00f3 \u0111ang x\u00e2y d\u1ef1ng \u0111\u00fang s\u1ea3n ph\u1ea9m kh\u00f4ng?’ Trong b\u1ed1i c\u1ea3nh DFD, x\u00e1c minh gi\u00fap l\u1ea5p \u0111\u1ea7y kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c y\u00eau c\u1ea7u tr\u1eebu t\u01b0\u1ee3ng v\u00e0 h\u00e0nh vi h\u1ec7 th\u1ed1ng c\u1ee5 th\u1ec3.<\/p>\n

M\u1ed9t DFD \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh \u0111\u1ea3m b\u1ea3o:<\/p>\n

    \n
  • \u0110\u1ed9 ch\u00ednh x\u00e1c:<\/strong>S\u01a1 \u0111\u1ed3 ph\u1ea3n \u00e1nh \u0111\u00fang y\u00eau c\u1ea7u d\u1eef li\u1ec7u th\u1ef1c t\u1ebf v\u00e0 c\u00e1c quy t\u1eafc kinh doanh.<\/li>\n
  • T\u00ednh \u0111\u1ea7y \u0111\u1ee7:<\/strong>Kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u n\u00e0o b\u1ecb m\u1ea5t gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh, kho l\u01b0u tr\u1eef ho\u1eb7c c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i.<\/li>\n
  • T\u00ednh nh\u1ea5t qu\u00e1n:<\/strong>C\u00e1c m\u1ee9c \u0111\u1ed9 tr\u1eebu t\u01b0\u1ee3ng ph\u00f9 h\u1ee3p v\u1edbi nhau, v\u00e0 \u0111\u1ecbnh ngh\u0129a d\u1eef li\u1ec7u kh\u1edbp nhau tr\u00ean to\u00e0n b\u1ed9 c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p.<\/li>\n
  • T\u00ednh kh\u1ea3 thi:<\/strong>C\u00e1c qu\u00e1 tr\u00ecnh \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t l\u00e0 h\u1ee3p l\u00fd v\u1ec1 m\u1eb7t logic v\u00e0 kh\u00f4ng vi ph\u1ea1m c\u00e1c gi\u1edbi h\u1ea1n v\u1eadt l\u00fd.<\/li>\n<\/ul>\n

    B\u1ecf qua giai \u0111o\u1ea1n n\u00e0y th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn vi\u1ec7c ph\u1ea3i s\u1eeda ch\u1eefa t\u1ed1n k\u00e9m trong giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n. Nh\u1eefng v\u1ea5n \u0111\u1ec1 nh\u01b0 thi\u1ebfu lu\u1ed3ng d\u1eef li\u1ec7u ho\u1eb7c kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u ch\u01b0a \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a s\u1ebd r\u1ea5t t\u1ed1n k\u00e9m \u0111\u1ec3 kh\u1eafc ph\u1ee5c khi m\u00e3 ngu\u1ed3n \u0111\u00e3 b\u1eaft \u0111\u1ea7u \u0111\u01b0\u1ee3c vi\u1ebft. M\u1ed9t quy tr\u00ecnh xem x\u00e9t nghi\u00eam ng\u1eb7t s\u1ebd gi\u1ea3m thi\u1ec3u c\u00e1c r\u1ee7i ro n\u00e0y t\u1eeb s\u1edbm.<\/p>\n

    \ud83d\udccb Danh s\u00e1ch ki\u1ec3m tra tr\u01b0\u1edbc khi x\u00e1c minh<\/h2>\n

    Tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u xem x\u00e9t ch\u00ednh th\u1ee9c, h\u00e3y \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 \u0111\u00e3 \u0111\u01b0\u1ee3c chu\u1ea9n b\u1ecb \u0111\u1ec3 ki\u1ec3m tra. M\u1ed9t s\u01a1 \u0111\u1ed3 l\u1ed9n x\u1ed9n ho\u1eb7c \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c k\u00e9m s\u1ebd khi\u1ebfn vi\u1ec7c x\u00e1c minh tr\u1edf n\u00ean kh\u00f3 kh\u0103n. S\u1eed d\u1ee5ng danh s\u00e1ch ki\u1ec3m tra sau \u0111\u1ec3 chu\u1ea9n b\u1ecb c\u00f4ng vi\u1ec7c c\u1ee7a b\u1ea1n:<\/p>\n

      \n
    • Ti\u00eau chu\u1ea9n h\u00f3a:<\/strong>\u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c bi\u1ec3u t\u01b0\u1ee3ng tu\u00e2n theo c\u00f9ng m\u1ed9t quy \u01b0\u1edbc (v\u00ed d\u1ee5: Gane & Sarson ho\u1eb7c Yourdon & Coad). Kh\u00f4ng \u0111\u01b0\u1ee3c tr\u1ed9n c\u00e1c phong c\u00e1ch kh\u00e1c nhau trong c\u00f9ng m\u1ed9t s\u01a1 \u0111\u1ed3.<\/li>\n
    • Nh\u00e3n hi\u1ec7u:<\/strong>X\u00e1c minh r\u1eb1ng m\u1ed7i m\u0169i t\u00ean \u0111\u1ec1u c\u00f3 nh\u00e3n m\u00f4 t\u1ea3 ch\u1ec9 r\u00f5 d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c di chuy\u1ec3n. M\u1ed7i qu\u00e1 tr\u00ecnh ph\u1ea3i c\u00f3 t\u00ean d\u1ea1ng \u0111\u1ed9ng t\u1eeb – danh t\u1eeb.<\/li>\n
    • C\u1ea5p \u0111\u1ed9 ph\u00e2n c\u1ea5p:<\/strong>X\u00e1c nh\u1eadn r\u1eb1ng s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh t\u1ed3n t\u1ea1i v\u00e0 c\u1ea5p \u0111\u1ed9 0 \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch \u0111\u00fang t\u1eeb n\u00f3.<\/li>\n
    • Kh\u1ea3 n\u0103ng \u0111\u1ecdc hi\u1ec3u:<\/strong>Ki\u1ec3m tra xem c\u00e1c \u0111\u01b0\u1eddng n\u00e9t kh\u00f4ng giao nhau m\u1ed9t c\u00e1ch kh\u00f4ng c\u1ea7n thi\u1ebft v\u00e0 b\u1ed1 c\u1ee5c h\u1ee3p l\u00fd (lu\u1ed3ng t\u1eeb tr\u00e1i sang ph\u1ea3i ho\u1eb7c t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi).<\/li>\n
    • T\u1eeb \u0111i\u1ec3n:<\/strong>\u0110\u1ea3m b\u1ea3o t\u1ed3n t\u1ea1i m\u1ed9t t\u1eeb \u0111i\u1ec3n d\u1eef li\u1ec7u. M\u1ecdi lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong t\u1eeb \u0111i\u1ec3n \u0111\u1ec3 kh\u1edbp v\u1edbi nh\u00e3n tr\u00ean s\u01a1 \u0111\u1ed3.<\/li>\n<\/ul>\n

      \ud83d\udd0e B\u01b0\u1edbc 1: X\u00e1c minh s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh<\/h2>\n

      S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh l\u00e0 m\u1ee9c \u0111\u1ed9 tr\u1eebu t\u01b0\u1ee3ng cao nh\u1ea5t. N\u00f3 th\u1ec3 hi\u1ec7n h\u1ec7 th\u1ed1ng nh\u01b0 m\u1ed9t qu\u00e1 tr\u00ecnh duy nh\u1ea5t v\u00e0 t\u01b0\u01a1ng t\u00e1c c\u1ee7a n\u00f3 v\u1edbi c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. \u0110\u00e2y l\u00e0 tuy\u1ebfn ph\u00f2ng th\u1ee7 \u0111\u1ea7u ti\u00ean trong qu\u00e1 tr\u00ecnh x\u00e1c minh.<\/p>\n

      Ki\u1ec3m tra c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i<\/h3>\n

      C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i \u0111\u1ea1i di\u1ec7n cho c\u00e1c ngu\u1ed3n ho\u1eb7c \u0111i\u1ec3m \u0111\u1ebfn c\u1ee7a d\u1eef li\u1ec7u n\u1eb1m ngo\u00e0i ranh gi\u1edbi h\u1ec7 th\u1ed1ng. \u0110\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi th\u1ef1c th\u1ec3 \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb l\u00e0 c\u1ea7n thi\u1ebft v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a r\u00f5 r\u00e0ng. H\u00e3y \u0111\u1eb7t c\u00e1c c\u00e2u h\u1ecfi sau:<\/p>\n

        \n
      • Li\u1ec7u th\u1ef1c th\u1ec3 n\u00e0y c\u00f3 kh\u00e1c bi\u1ec7t v\u1edbi h\u1ec7 th\u1ed1ng hay kh\u00f4ng?<\/li>\n
      • C\u00f3 th\u1ef1c th\u1ec3 n\u00e0o b\u1ecb thi\u1ebfu m\u00e0 n\u00ean t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng kh\u00f4ng?<\/li>\n
      • C\u00e1c m\u0169i t\u00ean ch\u1ec9 \u0111\u1ebfn v\u00e0 \u0111i t\u1eeb c\u00e1c th\u1ef1c th\u1ec3 c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u kinh doanh kh\u00f4ng?<\/li>\n<\/ul>\n

        Ki\u1ec3m tra ranh gi\u1edbi h\u1ec7 th\u1ed1ng<\/h3>\n

        Quy tr\u00ecnh duy nh\u1ea5t \u0111\u1ea1i di\u1ec7n cho h\u1ec7 th\u1ed1ng ph\u1ea3i ch\u1ee9a to\u00e0n b\u1ed9 logic n\u1ed9i b\u1ed9. X\u00e1c minh r\u1eb1ng kh\u00f4ng c\u00f3 lu\u1ed3ng d\u1eef li\u1ec7u n\u00e0o v\u01b0\u1ee3t qua ranh gi\u1edbi m\u00e0 kh\u00f4ng \u0111i qua quy tr\u00ecnh n\u00e0y. N\u1ebfu d\u1eef li\u1ec7u di chuy\u1ec3n t\u1eeb m\u1ed9t th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i n\u00e0y sang th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i kh\u00e1c m\u00e0 kh\u00f4ng \u0111i v\u00e0o h\u1ec7 th\u1ed1ng, th\u00ec n\u00f3 kh\u00f4ng n\u00ean \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb tr\u00ean s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh, v\u00ec n\u00f3 n\u1eb1m ngo\u00e0i ph\u1ea1m vi.<\/p>\n

        Ki\u1ec3m tra c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u<\/h3>\n

        Xem x\u00e9t t\u1eebng m\u0169i t\u00ean k\u1ebft n\u1ed1i v\u1edbi quy tr\u00ecnh trung t\u00e2m. M\u1ed7i \u0111\u1ea7u v\u00e0o ph\u1ea3i c\u00f3 h\u00e0nh \u0111\u1ed9ng \u0111\u1ea7u ra t\u01b0\u01a1ng \u1ee9ng ho\u1eb7c l\u01b0u tr\u1eef. N\u1ebfu m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111i v\u00e0o h\u1ec7 th\u1ed1ng nh\u01b0ng kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u n\u00e0o tho\u00e1t ra, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 cho th\u1ea5y m\u1ed9t quy tr\u00ecnh \u201cl\u1ed7 \u0111en\u201d, n\u01a1i d\u1eef li\u1ec7u bi\u1ebfn m\u1ea5t m\u00e0 kh\u00f4ng l\u00fd do r\u00f5 r\u00e0ng.<\/p>\n

        \ud83d\udd0e B\u01b0\u1edbc 2: X\u00e1c minh s\u01a1 \u0111\u1ed3 DFD c\u1ea5p \u0111\u1ed9 0 (C\u00e2n b\u1eb1ng)<\/h2>\n

        S\u01a1 \u0111\u1ed3 DFD c\u1ea5p \u0111\u1ed9 0 ph\u00e2n t\u00edch quy tr\u00ecnh duy nh\u1ea5t trong s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh th\u00e0nh c\u00e1c h\u1ec7 th\u1ed1ng con ch\u00ednh. Quy t\u1eafc quan tr\u1ecdng nh\u1ea5t \u1edf \u0111\u00e2y l\u00e0c\u00e2n b\u1eb1ng<\/strong>. C\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a quy tr\u00ecnh cha ph\u1ea3i kh\u1edbp ch\u00ednh x\u00e1c v\u1edbi c\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a c\u00e1c quy tr\u00ecnh con.<\/p>\n

        B\u1ea3o to\u00e0n d\u1eef li\u1ec7u<\/h3>\n

        V\u1edbi m\u1ed7i lu\u1ed3ng d\u1eef li\u1ec7u \u0111i v\u00e0o quy tr\u00ecnh s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh, ph\u1ea3i c\u00f3 m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u t\u01b0\u01a1ng \u1ee9ng \u0111i v\u00e0o s\u01a1 \u0111\u1ed3 c\u1ea5p \u0111\u1ed9 0. \u0110i\u1ec1u n\u00e0y c\u0169ng \u00e1p d\u1ee5ng cho \u0111\u1ea7u ra. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u1ea3o to\u00e0n d\u1eef li\u1ec7u. N\u1ebfu s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh hi\u1ec3n th\u1ecb \u201c\u0110\u01a1n h\u00e0ng kh\u00e1ch h\u00e0ng\u201d \u0111i v\u00e0o h\u1ec7 th\u1ed1ng, s\u01a1 \u0111\u1ed3 c\u1ea5p \u0111\u1ed9 0 ph\u1ea3i hi\u1ec3n th\u1ecb \u201c\u0110\u01a1n h\u00e0ng kh\u00e1ch h\u00e0ng\u201d \u0111i v\u00e0o \u00edt nh\u1ea5t m\u1ed9t trong c\u00e1c quy tr\u00ecnh ch\u00ednh.<\/p>\n

        S\u1ed1 l\u01b0\u1ee3ng quy tr\u00ecnh v\u00e0 \u0111\u1ed9 chi ti\u1ebft<\/h3>\n

        C\u1ea5p \u0111\u1ed9 0 th\u01b0\u1eddng ch\u1ee9a t\u1eeb 3 \u0111\u1ebfn 7 quy tr\u00ecnh. N\u1ebfu b\u1ea1n c\u00f3 nhi\u1ec1u h\u01a1n 7 quy tr\u00ecnh, s\u01a1 \u0111\u1ed3 c\u00f3 th\u1ec3 qu\u00e1 ph\u1ee9c t\u1ea1p cho m\u1ed9t c\u00e1i nh\u00ecn duy nh\u1ea5t. N\u1ebfu b\u1ea1n c\u00f3 \u00edt h\u01a1n 3 quy tr\u00ecnh, b\u1ea1n c\u00f3 th\u1ec3 c\u1ea7n ph\u00e2n t\u00edch s\u00e2u h\u01a1n. \u0110\u1ea3m b\u1ea3o m\u1ed7i quy tr\u00ecnh l\u00e0 ri\u00eang bi\u1ec7t v\u00e0 th\u1ef1c hi\u1ec7n m\u1ed9t ch\u1ee9c n\u0103ng logic duy nh\u1ea5t.<\/p>\n

        X\u00e1c minh c\u00e1c kho d\u1eef li\u1ec7u<\/h3>\n

        Ki\u1ec3m tra xem m\u1ed7i kho d\u1eef li\u1ec7u \u1edf c\u1ea5p \u0111\u1ed9 0 c\u00f3 th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft hay kh\u00f4ng. M\u1ed9t kho d\u1eef li\u1ec7u ch\u1ec9 n\u00ean t\u1ed3n t\u1ea1i n\u1ebfu d\u1eef li\u1ec7u c\u1ea7n \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef \u0111\u1ec3 s\u1eed d\u1ee5ng sau n\u00e0y. \u0110\u1ea3m b\u1ea3o c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u \u0111i v\u00e0o v\u00e0 ra kh\u1ecfi kho \u0111\u01b0\u1ee3c ghi nh\u00e3n ch\u00ednh x\u00e1c. C\u00e1c kho d\u1eef li\u1ec7u kh\u00f4ng n\u00ean k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i; m\u1ecdi d\u1eef li\u1ec7u ph\u1ea3i \u0111i qua m\u1ed9t quy tr\u00ecnh.<\/p>\n

        \ud83d\udd0e B\u01b0\u1edbc 3: X\u00e1c minh s\u01a1 \u0111\u1ed3 DFD c\u1ea5p \u0111\u1ed9 N<\/h2>\n

        S\u01a1 \u0111\u1ed3 c\u1ea5p \u0111\u1ed9 N cung c\u1ea5p th\u00eam chi ti\u1ebft cho c\u00e1c quy tr\u00ecnh c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh \u1edf c\u1ea5p \u0111\u1ed9 0. Vi\u1ec7c x\u00e1c minh \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y t\u1eadp trung v\u00e0o t\u00ednh nh\u1ea5t qu\u00e1n v\u1edbi quy tr\u00ecnh cha.<\/p>\n

        Ph\u00f9 h\u1ee3p \u0111\u1ea7u v\u00e0o\/\u0111\u1ea7u ra<\/h3>\n

        Gi\u1ed1ng nh\u01b0 c\u1ea5p \u0111\u1ed9 0, c\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a quy tr\u00ecnh cha ph\u1ea3i kh\u1edbp v\u1edbi t\u1ed5ng c\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a c\u00e1c quy tr\u00ecnh con. N\u1ebfu quy tr\u00ecnh 1.0 nh\u1eadn \u201cD\u1eef li\u1ec7u \u0111\u0103ng nh\u1eadp\u201d v\u00e0 xu\u1ea5t \u201cToken truy c\u1eadp\u201d trong s\u01a1 \u0111\u1ed3 c\u1ea5p \u0111\u1ed9 0, th\u00ec vi\u1ec7c ph\u00e2n t\u00edch quy tr\u00ecnh 1.0 \u1edf c\u1ea5p \u0111\u1ed9 1 c\u0169ng ph\u1ea3i ch\u1ea5p nh\u1eadn \u201cD\u1eef li\u1ec7u \u0111\u0103ng nh\u1eadp\u201d v\u00e0 t\u1ea1o ra \u201cToken truy c\u1eadp\u201d.<\/p>\n

        Log\u00edc ph\u00e2n t\u00edch<\/h3>\n

        \u0110\u1ea3m b\u1ea3o r\u1eb1ng vi\u1ec7c ph\u00e2n t\u00edch l\u00e0 h\u1ee3p l\u00fd. S\u01a1 \u0111\u1ed3 con c\u00f3 gi\u1ea3i th\u00edchc\u00e1ch<\/em>quy tr\u00ecnh cha ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o kh\u00f4ng? Tr\u00e1nh \u0111\u01b0a v\u00e0o c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i ho\u1eb7c kho d\u1eef li\u1ec7u m\u1edbi trong s\u01a1 \u0111\u1ed3 con m\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c ng\u1ee5 \u00fd t\u1eeb quy tr\u00ecnh cha. N\u1ebfu m\u1ed9t kho d\u1eef li\u1ec7u m\u1edbi \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u, n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c bi\u1ec7n minh b\u1eb1ng y\u00eau c\u1ea7u l\u01b0u gi\u1eef d\u1eef li\u1ec7u.<\/p>\n

        T\u00ednh nh\u1ea5t qu\u00e1n v\u1ec1 t\u00ean g\u1ecdi<\/h3>\n

        C\u00e1c nh\u00e3n tr\u00ean c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u trong s\u01a1 \u0111\u1ed3 con ph\u1ea3i kh\u1edbp v\u1edbi c\u00e1c nh\u00e3n trong s\u01a1 \u0111\u1ed3 cha khi c\u00f3 th\u1ec3. N\u1ebfu m\u1ed9t lu\u1ed3ng \u0111\u01b0\u1ee3c tinh ch\u1ec9nh trong s\u01a1 \u0111\u1ed3 con (v\u00ed d\u1ee5: \u201cD\u1eef li\u1ec7u\u201d tr\u1edf th\u00e0nh \u201cD\u1eef li\u1ec7u ng\u01b0\u1eddi d\u00f9ng\u201d), s\u1ef1 thay \u0111\u1ed5i \u0111\u00f3 ph\u1ea3i nh\u1ea5t qu\u00e1n v\u1edbi t\u1eeb \u0111i\u1ec3n d\u1eef li\u1ec7u. S\u1ef1 m\u01a1 h\u1ed3 \u1edf \u0111\u00e2y s\u1ebd g\u00e2y nh\u1ea7m l\u1eabn trong qu\u00e1 tr\u00ecnh tri\u1ec3n khai.<\/p>\n

        \ud83d\udeab B\u01b0\u1edbc 4: Ki\u1ec3m tra t\u00ednh to\u00e0n v\u1eb9n c\u1ea5u tr\u00fac<\/h2>\n

        C\u00f3 nh\u1eefng b\u1ea5t th\u01b0\u1eddng c\u1ea5u tr\u00fac c\u1ee5 th\u1ec3 cho th\u1ea5y l\u1ed7i trong thi\u1ebft k\u1ebf DFD. Nh\u1eefng m\u1eabu ph\u1ed5 bi\u1ebfn n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh v\u00e0 s\u1eeda ch\u1eefa trong qu\u00e1 tr\u00ecnh x\u00e1c minh.<\/p>\n

        Tr\u00e1nh c\u00e1c l\u1ed7 \u0111en<\/h3>\n

        M\u1ed9t quy tr\u00ecnh l\u1ed7 \u0111en l\u00e0 quy tr\u00ecnh c\u00f3 \u0111\u1ea7u v\u00e0o nh\u01b0ng kh\u00f4ng c\u00f3 \u0111\u1ea7u ra. D\u1eef li\u1ec7u \u0111i v\u00e0o quy tr\u00ecnh v\u00e0 bi\u1ebfn m\u1ea5t. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng cho th\u1ea5y thi\u1ebfu lu\u1ed3ng \u0111\u1ea7u ra ho\u1eb7c \u0111\u1ecbnh ngh\u0129a quy tr\u00ecnh ch\u01b0a ho\u00e0n ch\u1ec9nh. M\u1ecdi quy tr\u00ecnh \u0111\u1ec1u ph\u1ea3i t\u1ea1o ra k\u1ebft qu\u1ea3 n\u00e0o \u0111\u00f3, c\u00f3 th\u1ec3 l\u00e0 d\u1eef li\u1ec7u \u0111\u1ec3 l\u01b0u tr\u1eef, d\u1eef li\u1ec7u \u0111\u1ec3 g\u1eedi \u0111i n\u01a1i kh\u00e1c, ho\u1eb7c k\u1ebft qu\u1ea3 quy\u1ebft \u0111\u1ecbnh.<\/p>\n

        Tr\u00e1nh c\u00e1c ph\u00e9p m\u00e0u<\/h3>\n

        M\u1ed9t quy tr\u00ecnh ph\u00e9p m\u00e0u l\u00e0 quy tr\u00ecnh c\u00f3 \u0111\u1ea7u ra nh\u01b0ng kh\u00f4ng c\u00f3 \u0111\u1ea7u v\u00e0o. N\u00f3 t\u1ea1o ra d\u1eef li\u1ec7u t\u1eeb kh\u00f4ng c\u00f3 g\u00ec. \u0110i\u1ec1u n\u00e0y l\u00e0 kh\u00f4ng th\u1ec3 v\u1ec1 m\u1eb7t logic trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. M\u1ecdi \u0111\u1ea7u ra \u0111\u1ec1u ph\u1ea3i \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o ho\u1eb7c suy ra t\u1eeb d\u1eef li\u1ec7u \u0111\u00e3 l\u01b0u tr\u1eef.<\/p>\n

        Tr\u00e1nh c\u00e1c l\u1ed7 x\u00e1m<\/h3>\n

        M\u1ed9t l\u1ed7 x\u00e1m x\u1ea3y ra khi \u0111\u1ea7u v\u00e0o kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1ea7u ra v\u1ec1 m\u1eb7t logic. V\u00ed d\u1ee5, n\u1ebfu \u0111\u1ea7u v\u00e0o l\u00e0 ‘\u0110\u1ecba ch\u1ec9 kh\u00e1ch h\u00e0ng’ v\u00e0 \u0111\u1ea7u ra l\u00e0 ‘Chi ti\u1ebft thanh to\u00e1n’, th\u00ec quy tr\u00ecnh \u0111ang th\u1ef1c hi\u1ec7n nhi\u1ec1u h\u01a1n ch\u1ec9 vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i; n\u00f3 \u0111ang t\u1ea1o ra d\u1eef li\u1ec7u kh\u00f4ng th\u1ec3 suy ra t\u1eeb \u0111\u1ea7u v\u00e0o. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y c\u00f3 lu\u1ed3ng d\u1eef li\u1ec7u b\u1ecb thi\u1ebfu ho\u1eb7c c\u00f3 kho d\u1eef li\u1ec7u b\u1ecb thi\u1ebfu.<\/p>\n

        Ki\u1ec3m tra k\u1ebft n\u1ed1i kho d\u1eef li\u1ec7u<\/h3>\n

        \u0110\u1ea3m b\u1ea3o r\u1eb1ng lu\u1ed3ng d\u1eef li\u1ec7u kh\u00f4ng \u0111i tr\u1ef1c ti\u1ebfp t\u1eeb m\u1ed9t th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i \u0111\u1ebfn kho d\u1eef li\u1ec7u. M\u1ecdi d\u1eef li\u1ec7u v\u00e0o ho\u1eb7c ra kh\u1ecfi kho \u0111\u1ec1u ph\u1ea3i \u0111i qua m\u1ed9t quy tr\u00ecnh. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c quy t\u1eafc to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 logic kinh doanh \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng tr\u01b0\u1edbc khi d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef.<\/p>\n

        \ud83d\udcca B\u1ea3ng ti\u00eau ch\u00ed x\u00e1c minh<\/h2>\n

        S\u1eed d\u1ee5ng b\u1ea3ng n\u00e0y nh\u01b0 m\u1ed9t tham chi\u1ebfu nhanh trong c\u00e1c bu\u1ed5i xem x\u00e9t c\u1ee7a b\u1ea1n. B\u1ea3ng n\u00e0y t\u00f3m t\u1eaft c\u00e1c quy t\u1eafc ch\u00ednh v\u00e0 c\u00e1c ki\u1ec3m tra c\u1ee5 th\u1ec3 c\u1ea7n thi\u1ebft cho t\u1eebng ph\u1ea7n t\u1eed.<\/p>\n\n\n\n\n\n\n\n\n\n\n
        Ph\u1ea7n t\u1eed<\/th>\nQuy t\u1eafc x\u00e1c minh<\/th>\nL\u1ed7i ph\u1ed5 bi\u1ebfn<\/th>\n<\/tr>\n<\/thead>\n
        Quy tr\u00ecnh<\/td>\nPh\u1ea3i c\u00f3 \u00edt nh\u1ea5t m\u1ed9t \u0111\u1ea7u v\u00e0o v\u00e0 m\u1ed9t \u0111\u1ea7u ra<\/td>\nQuy tr\u00ecnh l\u1ed7 \u0111en ho\u1eb7c quy tr\u00ecnh ph\u00e9p m\u00e0u<\/td>\n<\/tr>\n
        Kho d\u1eef li\u1ec7u<\/td>\nPh\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t quy tr\u00ecnh, kh\u00f4ng ph\u1ea3i v\u1edbi m\u1ed9t th\u1ef1c th\u1ec3<\/td>\nLu\u1ed3ng tr\u1ef1c ti\u1ebfp t\u1eeb th\u1ef1c th\u1ec3 \u0111\u1ebfn kho<\/td>\n<\/tr>\n
        Lu\u1ed3ng d\u1eef li\u1ec7u<\/td>\nPh\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1nh nh\u00e3n b\u1eb1ng c\u1ee5m danh t\u1eeb<\/td>\nNh\u00e3n \u0111\u1ed9ng t\u1eeb ho\u1eb7c nh\u00e3n b\u1ecb thi\u1ebfu<\/td>\n<\/tr>\n
        Th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i<\/td>\nPh\u1ea3i n\u1eb1m ngo\u00e0i bi\u00ean gi\u1edbi h\u1ec7 th\u1ed1ng<\/td>\nTh\u1ef1c th\u1ec3 n\u1eb1m trong bi\u00ean gi\u1edbi h\u1ec7 th\u1ed1ng<\/td>\n<\/tr>\n
        T\u00ednh nh\u1ea5t qu\u00e1n<\/td>\n\u0110\u1ea7u v\u00e0o\/\u0111\u1ea7u ra c\u1ee7a cha v\u00e0 con ph\u1ea3i kh\u1edbp nhau<\/td>\nLu\u1ed3ng d\u1eef li\u1ec7u m\u1ea5t c\u00e2n b\u1eb1ng<\/td>\n<\/tr>\n
        Ph\u00e2n r\u00e3<\/td>\nCon ph\u1ea3i gi\u1ea3i th\u00edch ‘L\u00e0m th\u1ebf n\u00e0o’, ch\u1ee9 kh\u00f4ng ph\u1ea3i ‘T\u1ea1i sao’<\/td>\nTh\u00eam logic n\u1eb1m ngo\u00e0i ph\u1ea1m vi<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \ud83d\udde3\ufe0f B\u01b0\u1edbc 5: Quy tr\u00ecnh xem x\u00e9t c\u1ee7a c\u00e1c b\u00ean li\u00ean quan<\/h2>\n

        Ki\u1ec3m tra t\u00ednh h\u1ee3p l\u1ec7 kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t ki\u1ec3m tra k\u1ef9 thu\u1eadt; n\u00f3 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 giao ti\u1ebfp. Khi c\u00e1c quy t\u1eafc k\u1ef9 thu\u1eadt \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng, s\u01a1 \u0111\u1ed3 ph\u1ea3i \u0111\u01b0\u1ee3c xem x\u00e9t b\u1edfi c\u00e1c b\u00ean li\u00ean quan \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o n\u00f3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u kinh doanh.<\/p>\n

        Chu\u1ea9n b\u1ecb bu\u1ed5i h\u1ecdp<\/h3>\n

        Kh\u00f4ng tr\u00ecnh b\u00e0y s\u01a1 \u0111\u1ed3 m\u1ed9t c\u00e1ch t\u00e1ch bi\u1ec7t. Chu\u1ea9n b\u1ecb m\u1ed9t b\u1ea3n tr\u00ecnh b\u00e0y chi ti\u1ebft gi\u1ea3i th\u00edch lu\u1ed3ng d\u1eef li\u1ec7u. Cung c\u1ea5p b\u1ed1i c\u1ea3nh v\u1ec1 l\u00fd do t\u1ea1i sao m\u1ed9t s\u1ed1 kho d\u1eef li\u1ec7u t\u1ed3n t\u1ea1i v\u00e0 c\u00e1ch c\u00e1c quy tr\u00ecnh t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau. \u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c b\u00ean li\u00ean quan \u0111\u1ec1u c\u00f3 quy\u1ec1n truy c\u1eadp v\u00e0o t\u1eeb \u0111i\u1ec3n d\u1eef li\u1ec7u \u0111\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c thu\u1eadt ng\u1eef.<\/p>\n

        Thu th\u1eadp ph\u1ea3n h\u1ed3i<\/h3>\n

        Khuy\u1ebfn kh\u00edch c\u00e1c b\u00ean li\u00ean quan \u0111\u1eb7t c\u00e2u h\u1ecfi v\u1ec1 lu\u1ed3ng d\u1eef li\u1ec7u. \u0110\u1eb7t nh\u1eefng c\u00e2u h\u1ecfi c\u1ee5 th\u1ec3 nh\u01b0:<\/p>\n

          \n
        • \u201cLu\u1ed3ng d\u1eef li\u1ec7u n\u00e0y c\u00f3 ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c c\u00e1ch b\u1ea1n hi\u1ec7n \u0111ang x\u1eed l\u00fd th\u00f4ng tin n\u00e0y kh\u00f4ng?\u201d<\/li>\n
        • \u201cC\u00f3 d\u1eef li\u1ec7u n\u00e0o \u1edf \u0111\u00e2y m\u00e0 b\u1ea1n cho l\u00e0 thi\u1ebfu trong giao d\u1ecbch n\u00e0y kh\u00f4ng?\u201d<\/li>\n
        • \u201cTh\u1ee9 t\u1ef1 c\u00e1c quy tr\u00ecnh c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi th\u1ef1c t\u1ebf v\u1eadn h\u00e0nh kh\u00f4ng?\u201d<\/li>\n<\/ul>\n

          Ghi ch\u00e9p c\u00e1c thay \u0111\u1ed5i<\/h3>\n

          Ghi l\u1ea1i t\u1ea5t c\u1ea3 ph\u1ea3n h\u1ed3i v\u00e0 c\u00e1c thay \u0111\u1ed5i \u0111\u1ec1 xu\u1ea5t. N\u1ebfu m\u1ed9t b\u00ean li\u00ean quan \u0111\u1ec1 xu\u1ea5t m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u m\u1edbi, h\u00e3y x\u00e1c minh n\u00f3 theo c\u00e1c quy t\u1eafc c\u00e2n b\u1eb1ng tr\u01b0\u1edbc khi ch\u1ea5p nh\u1eadn. C\u1eadp nh\u1eadt s\u01a1 \u0111\u1ed3 v\u00e0 t\u1eeb \u0111i\u1ec3n d\u1eef li\u1ec7u \u0111\u1ed3ng th\u1eddi \u0111\u1ec3 duy tr\u00ec s\u1ef1 \u0111\u1ed3ng b\u1ed9. Vi\u1ec7c qu\u1ea3n l\u00fd phi\u00ean b\u1ea3n l\u00e0 r\u1ea5t quan tr\u1ecdng; h\u00e3y l\u01b0u tr\u1eef h\u1ed3 s\u01a1 tr\u1ea1ng th\u00e1i s\u01a1 \u0111\u1ed3 t\u1ea1i m\u1ed7i v\u00f2ng xem x\u00e9t.<\/p>\n

          \ud83d\udd04 B\u01b0\u1edbc 6: Tinh ch\u1ec9nh l\u1eb7p l\u1ea1i<\/h2>\n

          Vi\u1ec7c ki\u1ec3m tra t\u00ednh h\u1ee3p l\u1ec7 hi\u1ebfm khi l\u00e0 m\u1ed9t s\u1ef1 ki\u1ec7n duy nh\u1ea5t. Khi y\u00eau c\u1ea7u thay \u0111\u1ed5i, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) ph\u1ea3i thay \u0111\u1ed5i theo. Ph\u1ea7n n\u00e0y tr\u00ecnh b\u00e0y c\u00e1ch qu\u1ea3n l\u00fd c\u00e1c thay \u0111\u1ed5i trong su\u1ed1t v\u00f2ng \u0111\u1eddi c\u1ee7a d\u1ef1 \u00e1n.<\/p>\n

          Ph\u00e2n t\u00edch t\u00e1c \u0111\u1ed9ng<\/h3>\n

          Khi c\u00f3 y\u00eau c\u1ea7u thay \u0111\u1ed5i, h\u00e3y ph\u00e2n t\u00edch t\u00e1c \u0111\u1ed9ng c\u1ee7a n\u00f3 \u0111\u1ed1i v\u1edbi to\u00e0n b\u1ed9 c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p. N\u1ebfu m\u1ed9t quy tr\u00ecnh \u1edf c\u1ea5p \u0111\u1ed9 1 thay \u0111\u1ed5i, n\u00f3 c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea5p \u0111\u1ed9 0 kh\u00f4ng? Li\u1ec7u c\u00f3 c\u1ea7n kho d\u1eef li\u1ec7u m\u1edbi kh\u00f4ng? N\u00f3 c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c quy tr\u00ecnh kh\u00e1c chia s\u1ebb c\u00f9ng lu\u1ed3ng d\u1eef li\u1ec7u kh\u00f4ng? Vi\u1ec7c th\u1ef1c hi\u1ec7n ph\u00e2n t\u00edch t\u00e1c \u0111\u1ed9ng n\u00e0y gi\u00fap ng\u0103n ng\u1eeba c\u00e1c l\u1ed7i lan truy\u1ec1n.<\/p>\n

          Ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n<\/h3>\n

          Duy tr\u00ec l\u1ecbch s\u1eed r\u00f5 r\u00e0ng v\u1ec1 c\u00e1c phi\u00ean b\u1ea3n s\u01a1 \u0111\u1ed3. S\u1eed d\u1ee5ng s\u1ed1 phi\u00ean b\u1ea3n (v\u00ed d\u1ee5: v1.0, v1.1) v\u00e0 ng\u00e0y s\u1eeda \u0111\u1ed5i. \u0110i\u1ec1u n\u00e0y gi\u00fap \u0111\u1ed9i ng\u0169 theo d\u00f5i qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng v\u00e0 c\u00f3 th\u1ec3 ho\u00e0n nguy\u00ean thay \u0111\u1ed5i n\u1ebfu c\u1ea7n. M\u1eb7c d\u00f9 kh\u00f4ng y\u00eau c\u1ea7u c\u00f4ng c\u1ee5 c\u1ee5 th\u1ec3, nh\u01b0ng vi\u1ec7c tu\u00e2n th\u1ee7 quy t\u1eafc \u0111\u1eb7t t\u00ean r\u00f5 r\u00e0ng cho c\u00e1c t\u1ec7p l\u00e0 thi\u1ebft y\u1ebfu.<\/p>\n

          Ki\u1ec3m tra l\u1ea1i<\/h3>\n

          Sau khi th\u1ef1c hi\u1ec7n c\u00e1c thay \u0111\u1ed5i, h\u00e3y ch\u1ea1y l\u1ea1i quy tr\u00ecnh ki\u1ec3m tra t\u00ednh h\u1ee3p l\u1ec7. \u0110\u1eebng cho r\u1eb1ng m\u1ed9t thay \u0111\u1ed5i nh\u1ecf s\u1ebd b\u1ea3o to\u00e0n t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. Ki\u1ec3m tra l\u1ea1i c\u00e1c quy t\u1eafc c\u00e2n b\u1eb1ng, quy t\u1eafc \u0111\u1eb7t t\u00ean v\u00e0 t\u00ednh to\u00e0n v\u1eb9n c\u1ea5u tr\u00fac. \u0110\u00f4i khi m\u1ed9t thay \u0111\u1ed5i nh\u1ecf c\u00f3 th\u1ec3 l\u00e0m m\u1ea5t c\u00e2n b\u1eb1ng s\u01a1 \u0111\u1ed3 \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra tr\u01b0\u1edbc \u0111\u00f3.<\/p>\n

          \u2696\ufe0f Qu\u1ea3n l\u00fd t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a t\u1eeb \u0111i\u1ec3n d\u1eef li\u1ec7u<\/h2>\n

          T\u1eeb \u0111i\u1ec3n d\u1eef li\u1ec7u l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n. N\u00f3 \u0111\u1ecbnh ngh\u0129a c\u1ea5u tr\u00fac c\u1ee7a t\u1eebng ph\u1ea7n t\u1eed d\u1eef li\u1ec7u. Vi\u1ec7c ki\u1ec3m tra t\u00ednh h\u1ee3p l\u1ec7 ph\u1ea3i \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng t\u1eeb s\u01a1 \u0111\u1ed3 tr\u1ef1c quan sang c\u00e1c \u0111\u1ecbnh ngh\u0129a v\u0103n b\u1ea3n.<\/p>\n

          S\u1ef1 \u0111\u1ed3ng nh\u1ea5t \u0111\u1ecbnh ngh\u0129a<\/h3>\n

          \u0110\u1ea3m b\u1ea3o c\u00e1c nh\u00e3n lu\u1ed3ng d\u1eef li\u1ec7u tr\u00ean s\u01a1 \u0111\u1ed3 kh\u1edbp ch\u00ednh x\u00e1c v\u1edbi c\u00e1c m\u1ee5c trong t\u1eeb \u0111i\u1ec3n. N\u1ebfu s\u01a1 \u0111\u1ed3 ghi \u201cM\u00e3 h\u00f3a \u0111\u01a1n\u201d c\u00f2n t\u1eeb \u0111i\u1ec3n ghi \u201cM\u00e3 \u0111\u1ecbnh danh h\u00f3a \u0111\u01a1n\u201d, s\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n n\u00e0y c\u00f3 th\u1ec3 g\u00e2y nh\u1ea7m l\u1eabn trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u. Chu\u1ea9n h\u00f3a thu\u1eadt ng\u1eef tr\u00ean t\u1ea5t c\u1ea3 t\u00e0i li\u1ec7u.<\/p>\n

          \u0110\u1ed9 \u0111\u1ea7y \u0111\u1ee7 thu\u1ed9c t\u00ednh<\/h3>\n

          Ki\u1ec3m tra xem m\u1ed7i kho d\u1eef li\u1ec7u c\u00f3 c\u1ea5u tr\u00fac \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a r\u00f5 r\u00e0ng trong t\u1eeb \u0111i\u1ec3n hay kh\u00f4ng. Li\u1ec7t k\u00ea c\u00e1c thu\u1ed9c t\u00ednh, ki\u1ec3u d\u1eef li\u1ec7u v\u00e0 r\u00e0ng bu\u1ed9c kh\u00f3a. N\u1ebfu m\u1ed9t kho d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c tham chi\u1ebfu trong DFD nh\u01b0ng kh\u00f4ng c\u00f3 m\u1ee5c trong t\u1eeb \u0111i\u1ec3n, thi\u1ebft k\u1ebf s\u1ebd ch\u01b0a ho\u00e0n ch\u1ec9nh. Kho\u1ea3ng tr\u1ed1ng n\u00e0y th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn l\u1ed7i c\u01a1 s\u1edf d\u1eef li\u1ec7u sau n\u00e0y.<\/p>\n

          Ki\u1ec3u d\u1eef li\u1ec7u v\u00e0 r\u00e0ng bu\u1ed9c<\/h3>\n

          X\u00e1c minh r\u1eb1ng ki\u1ec3u d\u1eef li\u1ec7u ng\u1ea7m \u0111\u1ecbnh trong s\u01a1 \u0111\u1ed3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c quy t\u1eafc kinh doanh. V\u00ed d\u1ee5, n\u1ebfu m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea1i di\u1ec7n cho \u201cNg\u00e0y sinh\u201d, th\u00ec n\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd nh\u01b0 m\u1ed9t chu\u1ed7i v\u0103n b\u1ea3n trong t\u1eeb \u0111i\u1ec3n. N\u00f3 ph\u1ea3i c\u00f3 \u0111\u1ecbnh d\u1ea1ng ng\u00e0y th\u00e1ng. M\u1ee9c \u0111\u1ed9 chi ti\u1ebft n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng tri\u1ec3n khai k\u1ef9 thu\u1eadt ph\u00f9 h\u1ee3p v\u1edbi thi\u1ebft k\u1ebf kh\u00e1i ni\u1ec7m.<\/p>\n

          \ud83d\udd12 Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<\/h2>\n

          Ngay c\u1ea3 nh\u1eefng nh\u00e0 ph\u00e2n t\u00edch c\u00f3 kinh nghi\u1ec7m c\u0169ng g\u1eb7p ph\u1ea3i nh\u1eefng b\u1eaby c\u1ee5 th\u1ec3 trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra t\u00ednh h\u1ee3p l\u1ec7. Vi\u1ec7c nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn n\u00e0y s\u1ebd gi\u00fap b\u1ea1n x\u1eed l\u00fd qu\u00e1 tr\u00ecnh xem x\u00e9t hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n

            \n
          • Ph\u00e2n t\u00edch qu\u00e1 m\u1ee9c:<\/strong>Vi\u1ec7c chia nh\u1ecf c\u00e1c quy tr\u00ecnh th\u00e0nh c\u00e1c b\u01b0\u1edbc qu\u00e1 chi ti\u1ebft (v\u00ed d\u1ee5: \u201c\u0110\u1ecdc t\u1ec7p\u201d, \u201cGhi t\u1ec7p\u201d) s\u1ebd khi\u1ebfn s\u01a1 \u0111\u1ed3 tr\u1edf n\u00ean kh\u00f3 \u0111\u1ecdc. H\u00e3y t\u1eadp trung v\u00e0o c\u00e1c ch\u1ee9c n\u0103ng kinh doanh, ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00e1c thao t\u00e1c k\u1ef9 thu\u1eadt.<\/li>\n
          • S\u1ef1 nh\u1ea7m l\u1eabn v\u1ec1 lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n:<\/strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) th\u1ec3 hi\u1ec7n d\u1eef li\u1ec7u, ch\u1ee9 kh\u00f4ng ph\u1ea3i \u0111i\u1ec1u khi\u1ec3n. Kh\u00f4ng n\u00ean hi\u1ec3n th\u1ecb c\u00e1c h\u00ecnh thoi quy\u1ebft \u0111\u1ecbnh hay v\u00f2ng l\u1eb7p v\u00ec ch\u00fang ng\u1ee5 \u00fd lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n. Thay v\u00e0o \u0111\u00f3, h\u00e3y s\u1eed d\u1ee5ng c\u00e1c qu\u00e1 tr\u00ecnh \u0111\u1ec3 bi\u1ec3u di\u1ec5n logic.<\/li>\n
          • B\u1ecf qua y\u1ebfu t\u1ed1 th\u1eddi gian:<\/strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u kh\u00f4ng th\u1ec3 hi\u1ec7n th\u1ee9 t\u1ef1 th\u1eddi gian. Kh\u00f4ng d\u00f9ng s\u01a1 \u0111\u1ed3 \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c ph\u1ee5 thu\u1ed9c theo th\u1eddi gian tr\u1eeb khi \u0111\u01b0\u1ee3c ghi r\u00f5. H\u00e3y t\u1eadp trung v\u00e0o lu\u1ed3ng logic thay v\u00ec th\u1eddi gian.<\/li>\n
          • B\u1ecf qua b\u1ea3o m\u1eadt:<\/strong>\u0110\u1ea3m b\u1ea3o c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5. M\u1eb7c d\u00f9 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u th\u01b0\u1eddng kh\u00f4ng th\u1ec3 hi\u1ec7n m\u00e3 h\u00f3a, nh\u01b0ng ch\u00fang c\u1ea7n x\u00e1c \u0111\u1ecbnh n\u01a1i d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111\u1ec3 c\u00f3 th\u1ec3 l\u00ean k\u1ebf ho\u1ea1ch c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt.<\/li>\n
          • Gi\u1ea3 \u0111\u1ecbnh giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng:<\/strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u kh\u00f4ng th\u1ec3 hi\u1ec7n m\u00e0n h\u00ecnh hay b\u00e1o c\u00e1o. Kh\u00f4ng l\u00e0m r\u1ed1i s\u01a1 \u0111\u1ed3 b\u1eb1ng c\u00e1c th\u00e0nh ph\u1ea7n giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng. H\u00e3y gi\u1eef s\u1ef1 t\u1eadp trung v\u00e0o vi\u1ec7c di chuy\u1ec3n d\u1eef li\u1ec7u gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n

            \ud83d\udcdd Ho\u00e0n thi\u1ec7n t\u00e0i li\u1ec7u<\/h2>\n

            Sau khi ki\u1ec3m tra x\u00e1c nh\u1eadn ho\u00e0n t\u1ea5t, t\u00e0i li\u1ec7u ph\u1ea3i \u0111\u01b0\u1ee3c ho\u00e0n thi\u1ec7n \u0111\u1ec3 b\u00e0n giao cho \u0111\u1ed9i ph\u00e1t tri\u1ec3n. Vi\u1ec7c n\u00e0y bao g\u1ed3m vi\u1ec7c t\u1ed5ng h\u1ee3p c\u00e1c s\u01a1 \u0111\u1ed3, t\u1eeb \u0111i\u1ec3n d\u1eef li\u1ec7u v\u00e0 b\u00e1o c\u00e1o ki\u1ec3m tra x\u00e1c nh\u1eadn.<\/p>\n

            T\u1ed5ng h\u1ee3p c\u00e1c t\u00e0i li\u1ec7u<\/h3>\n

            Thu th\u1eadp t\u1ea5t c\u1ea3 s\u01a1 \u0111\u1ed3 c\u1ea5p 0, s\u01a1 \u0111\u1ed3 c\u1ea5p N v\u00e0 s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh v\u00e0o m\u1ed9t g\u00f3i duy nh\u1ea5t. \u0110\u1ea3m b\u1ea3o ph\u00e2n c\u1ea5p \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u r\u00f5 r\u00e0ng \u0111\u1ec3 c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u00f3 th\u1ec3 theo d\u00f5i qu\u00e1 tr\u00ecnh ph\u00e2n t\u00edch. Bao g\u1ed3m t\u1eeb \u0111i\u1ec3n d\u1eef li\u1ec7u nh\u01b0 t\u00e0i li\u1ec7u \u0111i k\u00e8m.<\/p>\n

            B\u00e1o c\u00e1o ki\u1ec3m tra x\u00e1c nh\u1eadn<\/h3>\n

            T\u1ea1o b\u00e1o c\u00e1o t\u00f3m t\u1eaft qu\u00e1 tr\u00ecnh ki\u1ec3m tra x\u00e1c nh\u1eadn. Li\u1ec7t k\u00ea c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u00e1t hi\u1ec7n trong qu\u00e1 tr\u00ecnh xem x\u00e9t v\u00e0 c\u00e1ch th\u1ee9c kh\u1eafc ph\u1ee5c. T\u00e0i li\u1ec7u n\u00e0y \u0111\u00f3ng vai tr\u00f2 l\u00e0 b\u1eb1ng ch\u1ee9ng cho th\u1ea5y thi\u1ebft k\u1ebf \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng. \u0110\u1ed3ng th\u1eddi, n\u00f3 cung c\u1ea5p b\u1ed1i c\u1ea3nh cho nh\u1eefng ng\u01b0\u1eddi b\u1ea3o tr\u00ec trong t\u01b0\u01a1ng lai, nh\u1eefng ng\u01b0\u1eddi c\u00f3 th\u1ec3 kh\u00f4ng tham gia v\u00e0o cu\u1ed9c xem x\u00e9t ban \u0111\u1ea7u.<\/p>\n

            Th\u1ee7 t\u1ee5c b\u00e0n giao<\/h3>\n

            X\u00e1c \u0111\u1ecbnh quy tr\u00ecnh b\u00e0n giao c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn. Quy tr\u00ecnh n\u00e0y n\u00ean bao g\u1ed3m m\u1ed9t bu\u1ed5i h\u1ecdp n\u01a1i thi\u1ebft k\u1ebf \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch cho \u0111\u1ed9i ph\u00e1t tri\u1ec3n. Gi\u1ea3i \u0111\u00e1p m\u1ecdi th\u1eafc m\u1eafc li\u00ean quan \u0111\u1ebfn c\u00e1c lu\u1ed3ng m\u01a1 h\u1ed3 ho\u1eb7c c\u00e1c kho d\u1eef li\u1ec7u ph\u1ee9c t\u1ea1p. \u0110\u1ea3m b\u1ea3o \u0111\u1ed9i ng\u0169 hi\u1ec3u r\u1eb1ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 ngu\u1ed3n th\u00f4ng tin ch\u00ednh x\u00e1c cho c\u00e1c y\u00eau c\u1ea7u d\u1eef li\u1ec7u.<\/p>\n

            \ud83d\ude80 Duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c l\u00e2u d\u00e0i<\/h2>\n

            C\u00f4ng vi\u1ec7c kh\u00f4ng k\u1ebft th\u00fac \u1edf giai \u0111o\u1ea1n x\u00e1c nh\u1eadn. S\u01a1 \u0111\u1ed3 ph\u1ea3i lu\u00f4n \u0111\u01b0\u1ee3c gi\u1eef \u0111\u00fang khi h\u1ec7 th\u1ed1ng ph\u00e1t tri\u1ec3n. X\u00e2y d\u1ef1ng quy tr\u00ecnh qu\u1ea3n tr\u1ecb cho c\u00e1c thay \u0111\u1ed5i trong t\u01b0\u01a1ng lai.<\/p>\n

              \n
            • Qu\u1ea3n l\u00fd thay \u0111\u1ed5i:<\/strong>Y\u00eau c\u1ea7u r\u1eb1ng b\u1ea5t k\u1ef3 thay \u0111\u1ed5i n\u00e0o \u0111\u1ed1i v\u1edbi y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng \u0111\u1ec1u ph\u1ea3i k\u00edch ho\u1ea1t vi\u1ec7c xem x\u00e9t l\u1ea1i s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u. Kh\u00f4ng cho ph\u00e9p c\u00e1c thay \u0111\u1ed5i m\u00e3 ngu\u1ed3n l\u1ec7ch kh\u1ecfi thi\u1ebft k\u1ebf m\u00e0 kh\u00f4ng c\u1eadp nh\u1eadt s\u01a1 \u0111\u1ed3.<\/li>\n
            • Ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3:<\/strong>L\u00ean l\u1ecbch ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u so v\u1edbi h\u1ec7 th\u1ed1ng \u0111ang ho\u1ea1t \u0111\u1ed9ng. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o t\u00e0i li\u1ec7u ph\u1ea3n \u00e1nh \u0111\u00fang ph\u1ea7n m\u1ec1m th\u1ef1c t\u1ebf \u0111ang ch\u1ea1y trong m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t.<\/li>\n
            • \u0110\u00e0o t\u1ea1o:<\/strong>\u0110\u1ea3m b\u1ea3o c\u00e1c th\u00e0nh vi\u00ean m\u1edbi hi\u1ec3u r\u00f5 c\u00e1c ti\u00eau chu\u1ea9n s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u. S\u1ef1 nh\u1ea5t qu\u00e1n \u0111\u01b0\u1ee3c duy tr\u00ec khi m\u1ecdi ng\u01b0\u1eddi tu\u00e2n theo c\u00f9ng m\u1ed9t quy t\u1eafc ki\u1ec3m tra x\u00e1c nh\u1eadn.<\/li>\n<\/ul>\n

              B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 c\u00e1c b\u01b0\u1edbc x\u00e1c nh\u1eadn n\u00e0y, b\u1ea1n \u0111\u1ea3m b\u1ea3o r\u1eb1ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh \u0111\u01b0\u1ee3c b\u1ec1n v\u1eefng, ch\u00ednh x\u00e1c v\u00e0 h\u1eefu \u00edch trong su\u1ed1t v\u00f2ng \u0111\u1eddi h\u1ec7 th\u1ed1ng. K\u1ef7 lu\u1eadt n\u00e0y gi\u1ea3m thi\u1ec3u s\u1ef1 m\u01a1 h\u1ed3, ng\u0103n ng\u1eeba c\u00e1c l\u1ed7i t\u1ed1n k\u00e9m v\u00e0 t\u1ea1o n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho vi\u1ec7c ph\u00e1t tri\u1ec3n h\u1ec7 th\u1ed1ng th\u00e0nh c\u00f4ng.<\/p>\n","protected":false},"excerpt":{"rendered":"

              Vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) l\u00e0 m\u1ed9t m\u1ed1c quan tr\u1ecdng trong ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. N\u00f3 m\u00f4 t\u1ea3 s\u1ef1 di chuy\u1ec3n c\u1ee7a d\u1eef li\u1ec7u qua h\u1ec7 th\u1ed1ng, x\u00e1c \u0111\u1ecbnh c\u00e1ch th\u00f4ng tin \u0111\u01b0\u1ee3c x\u1eed l\u00fd, l\u01b0u tr\u1eef v\u00e0 chuy\u1ec3n giao. Tuy nhi\u00ean, m\u1ed9t s\u01a1 \u0111\u1ed3 tr\u00f4ng h\u1ea5p d\u1eabn v\u1ec1 m\u1eb7t th\u1ecb gi\u00e1c kh\u00f4ng nh\u1ea5t thi\u1ebft ch\u00ednh x\u00e1c v\u1ec1 m\u1eb7t ch\u1ee9c n\u0103ng. X\u00e1c minh l\u00e0 giai \u0111o\u1ea1n then ch\u1ed1t khi b\u1ea1n ki\u1ec3m tra xem s\u01a1 \u0111\u1ed3 c\u00f3 \u0111\u1ea1i di\u1ec7n \u0111\u00fang y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng c\u00f3 l\u1ed7i logic hay kh\u00f4ng. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u1ea3m b\u1ea3o c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u nh\u1ea5t qu\u00e1n, c\u00e1c qu\u00e1 tr\u00ecnh \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng v\u00e0 c\u1ea5u tr\u00fac h\u1ed7 tr\u1ee3 logic kinh doanh mong mu\u1ed1n. Vi\u1ec7c x\u00e1c minh kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t h\u00e0nh \u0111\u1ed9ng \u0111\u01a1n l\u1ebb m\u00e0 l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh xem x\u00e9t c\u00f3 k\u1ef7 lu\u1eadt. N\u00f3 \u0111\u00f2i h\u1ecfi c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 h\u1ec7 th\u1ed1ng \u0111\u1ec3 ki\u1ec3m tra t\u1eebng y\u1ebfu t\u1ed1 theo c\u00e1c quy t\u1eafc \u0111\u00e3 thi\u1ebft l\u1eadp. B\u1eb1ng c\u00e1ch tu\u00e2n theo quy tr\u00ecnh xem x\u00e9t c\u00f3 c\u1ea5u tr\u00fac, b\u1ea1n lo\u1ea1i b\u1ecf s\u1ef1 m\u01a1 h\u1ed3 v\u00e0 \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 tr\u1edf th\u00e0nh b\u1ea3n v\u1ebd thi\u1ebft k\u1ebf \u0111\u00e1ng tin c\u1eady cho ph\u00e1t tri\u1ec3n v\u00e0 giao ti\u1ebfp v\u1edbi c\u00e1c b\u00ean li\u00ean quan. H\u01b0\u1edbng d\u1eabn n\u00e0y n\u00eau r\u00f5 c\u00e1c b\u01b0\u1edbc to\u00e0n di\u1ec7n c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u00e1c minh DFD c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n trong to\u00e0n b\u1ed9 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. \ud83d\udee0\ufe0f Hi\u1ec3u r\u00f5 m\u1ee5c \u0111\u00edch c\u1ee7a vi\u1ec7c x\u00e1c minh Tr\u01b0\u1edbc khi \u0111i v\u00e0o c\u00e1c b\u01b0\u1edbc c\u1ee5 th\u1ec3, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i hi\u1ec3u x\u00e1c minh \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u g\u00ec trong b\u1ed1i c\u1ea3nh thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. Ki\u1ec3m tra h\u1ecfi: ‘Ch\u00fang ta c\u00f3 \u0111ang x\u00e2y d\u1ef1ng s\u1ea3n ph\u1ea9m \u0111\u00fang c\u00e1ch kh\u00f4ng?’ X\u00e1c minh h\u1ecfi: ‘Ch\u00fang ta c\u00f3 \u0111ang x\u00e2y d\u1ef1ng \u0111\u00fang s\u1ea3n ph\u1ea9m kh\u00f4ng?’ Trong b\u1ed1i c\u1ea3nh DFD, x\u00e1c minh gi\u00fap l\u1ea5p \u0111\u1ea7y kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c y\u00eau c\u1ea7u tr\u1eebu t\u01b0\u1ee3ng v\u00e0 h\u00e0nh vi h\u1ec7 th\u1ed1ng c\u1ee5 th\u1ec3. M\u1ed9t DFD \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh \u0111\u1ea3m b\u1ea3o: \u0110\u1ed9 ch\u00ednh x\u00e1c:S\u01a1 \u0111\u1ed3 ph\u1ea3n \u00e1nh \u0111\u00fang y\u00eau c\u1ea7u d\u1eef li\u1ec7u th\u1ef1c t\u1ebf v\u00e0 c\u00e1c quy t\u1eafc kinh doanh. T\u00ednh \u0111\u1ea7y \u0111\u1ee7:Kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u n\u00e0o b\u1ecb m\u1ea5t gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh, kho l\u01b0u tr\u1eef ho\u1eb7c c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. T\u00ednh nh\u1ea5t qu\u00e1n:C\u00e1c m\u1ee9c \u0111\u1ed9 tr\u1eebu t\u01b0\u1ee3ng ph\u00f9 h\u1ee3p v\u1edbi nhau, v\u00e0 \u0111\u1ecbnh ngh\u0129a d\u1eef li\u1ec7u kh\u1edbp nhau tr\u00ean to\u00e0n b\u1ed9 c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p. T\u00ednh kh\u1ea3 thi:C\u00e1c qu\u00e1 tr\u00ecnh \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t l\u00e0 h\u1ee3p l\u00fd v\u1ec1 m\u1eb7t logic v\u00e0 kh\u00f4ng vi ph\u1ea1m c\u00e1c gi\u1edbi h\u1ea1n v\u1eadt l\u00fd. B\u1ecf qua giai \u0111o\u1ea1n n\u00e0y th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn vi\u1ec7c ph\u1ea3i s\u1eeda ch\u1eefa t\u1ed1n k\u00e9m trong giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n. Nh\u1eefng v\u1ea5n \u0111\u1ec1 nh\u01b0 thi\u1ebfu lu\u1ed3ng d\u1eef li\u1ec7u ho\u1eb7c kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u ch\u01b0a \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a s\u1ebd r\u1ea5t t\u1ed1n k\u00e9m \u0111\u1ec3 kh\u1eafc ph\u1ee5c khi m\u00e3 ngu\u1ed3n \u0111\u00e3 b\u1eaft \u0111\u1ea7u \u0111\u01b0\u1ee3c vi\u1ebft. M\u1ed9t quy tr\u00ecnh xem x\u00e9t nghi\u00eam ng\u1eb7t s\u1ebd gi\u1ea3m thi\u1ec3u c\u00e1c r\u1ee7i ro n\u00e0y t\u1eeb s\u1edbm. \ud83d\udccb Danh s\u00e1ch ki\u1ec3m tra tr\u01b0\u1edbc khi x\u00e1c minh Tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u xem x\u00e9t ch\u00ednh th\u1ee9c, h\u00e3y \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 \u0111\u00e3 \u0111\u01b0\u1ee3c chu\u1ea9n b\u1ecb \u0111\u1ec3 ki\u1ec3m tra. M\u1ed9t s\u01a1 \u0111\u1ed3 l\u1ed9n x\u1ed9n ho\u1eb7c \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c k\u00e9m s\u1ebd khi\u1ebfn vi\u1ec7c x\u00e1c minh tr\u1edf n\u00ean kh\u00f3 kh\u0103n. S\u1eed d\u1ee5ng danh s\u00e1ch ki\u1ec3m tra sau \u0111\u1ec3 chu\u1ea9n b\u1ecb c\u00f4ng vi\u1ec7c c\u1ee7a b\u1ea1n: Ti\u00eau chu\u1ea9n h\u00f3a:\u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c bi\u1ec3u t\u01b0\u1ee3ng tu\u00e2n theo c\u00f9ng m\u1ed9t quy \u01b0\u1edbc (v\u00ed d\u1ee5: Gane & Sarson ho\u1eb7c Yourdon & Coad). Kh\u00f4ng \u0111\u01b0\u1ee3c tr\u1ed9n c\u00e1c phong c\u00e1ch kh\u00e1c nhau trong c\u00f9ng m\u1ed9t s\u01a1 \u0111\u1ed3. Nh\u00e3n hi\u1ec7u:X\u00e1c minh r\u1eb1ng m\u1ed7i m\u0169i t\u00ean \u0111\u1ec1u c\u00f3 nh\u00e3n m\u00f4 t\u1ea3 ch\u1ec9 r\u00f5 d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c di chuy\u1ec3n. M\u1ed7i qu\u00e1 tr\u00ecnh ph\u1ea3i c\u00f3 t\u00ean d\u1ea1ng \u0111\u1ed9ng t\u1eeb – danh t\u1eeb. C\u1ea5p \u0111\u1ed9 ph\u00e2n c\u1ea5p:X\u00e1c nh\u1eadn r\u1eb1ng s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh t\u1ed3n t\u1ea1i v\u00e0 c\u1ea5p \u0111\u1ed9 0 \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch \u0111\u00fang t\u1eeb n\u00f3. Kh\u1ea3 n\u0103ng \u0111\u1ecdc hi\u1ec3u:Ki\u1ec3m tra xem c\u00e1c \u0111\u01b0\u1eddng n\u00e9t kh\u00f4ng giao nhau m\u1ed9t c\u00e1ch kh\u00f4ng c\u1ea7n thi\u1ebft v\u00e0 b\u1ed1 c\u1ee5c h\u1ee3p l\u00fd (lu\u1ed3ng t\u1eeb tr\u00e1i sang ph\u1ea3i ho\u1eb7c t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi). T\u1eeb \u0111i\u1ec3n:\u0110\u1ea3m b\u1ea3o t\u1ed3n t\u1ea1i m\u1ed9t t\u1eeb \u0111i\u1ec3n d\u1eef li\u1ec7u. M\u1ecdi lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong t\u1eeb \u0111i\u1ec3n \u0111\u1ec3 kh\u1edbp v\u1edbi nh\u00e3n tr\u00ean s\u01a1 \u0111\u1ed3. \ud83d\udd0e B\u01b0\u1edbc 1: X\u00e1c minh s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh l\u00e0 m\u1ee9c \u0111\u1ed9 tr\u1eebu t\u01b0\u1ee3ng cao nh\u1ea5t. N\u00f3 th\u1ec3 hi\u1ec7n h\u1ec7 th\u1ed1ng nh\u01b0 m\u1ed9t qu\u00e1 tr\u00ecnh duy nh\u1ea5t v\u00e0 t\u01b0\u01a1ng t\u00e1c c\u1ee7a n\u00f3 v\u1edbi c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. \u0110\u00e2y l\u00e0 tuy\u1ebfn ph\u00f2ng th\u1ee7 \u0111\u1ea7u ti\u00ean trong qu\u00e1 tr\u00ecnh x\u00e1c minh. Ki\u1ec3m tra c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i \u0111\u1ea1i di\u1ec7n cho c\u00e1c ngu\u1ed3n ho\u1eb7c \u0111i\u1ec3m \u0111\u1ebfn c\u1ee7a d\u1eef li\u1ec7u n\u1eb1m ngo\u00e0i ranh gi\u1edbi h\u1ec7 th\u1ed1ng. \u0110\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi th\u1ef1c th\u1ec3 \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb l\u00e0 c\u1ea7n thi\u1ebft v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a r\u00f5 r\u00e0ng. H\u00e3y \u0111\u1eb7t c\u00e1c c\u00e2u h\u1ecfi sau: Li\u1ec7u th\u1ef1c th\u1ec3 n\u00e0y c\u00f3 kh\u00e1c bi\u1ec7t v\u1edbi h\u1ec7 th\u1ed1ng hay kh\u00f4ng? C\u00f3 th\u1ef1c th\u1ec3 n\u00e0o b\u1ecb thi\u1ebfu m\u00e0 n\u00ean t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng kh\u00f4ng? C\u00e1c m\u0169i t\u00ean ch\u1ec9 \u0111\u1ebfn v\u00e0 \u0111i t\u1eeb c\u00e1c th\u1ef1c th\u1ec3 c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u kinh doanh kh\u00f4ng? Ki\u1ec3m tra ranh gi\u1edbi h\u1ec7 th\u1ed1ng Quy tr\u00ecnh duy nh\u1ea5t \u0111\u1ea1i di\u1ec7n cho h\u1ec7 th\u1ed1ng ph\u1ea3i ch\u1ee9a to\u00e0n b\u1ed9 logic n\u1ed9i b\u1ed9. X\u00e1c minh r\u1eb1ng kh\u00f4ng c\u00f3 lu\u1ed3ng d\u1eef li\u1ec7u n\u00e0o v\u01b0\u1ee3t qua ranh gi\u1edbi m\u00e0 kh\u00f4ng \u0111i qua quy tr\u00ecnh n\u00e0y. N\u1ebfu d\u1eef li\u1ec7u di chuy\u1ec3n t\u1eeb m\u1ed9t th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i n\u00e0y sang th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i kh\u00e1c m\u00e0 kh\u00f4ng \u0111i v\u00e0o h\u1ec7 th\u1ed1ng, th\u00ec n\u00f3 kh\u00f4ng n\u00ean \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb tr\u00ean s\u01a1 \u0111\u1ed3 ng\u1eef c\u1ea3nh, v\u00ec n\u00f3 n\u1eb1m ngo\u00e0i ph\u1ea1m vi. Ki\u1ec3m tra c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u Xem x\u00e9t t\u1eebng m\u0169i t\u00ean k\u1ebft n\u1ed1i v\u1edbi quy tr\u00ecnh trung t\u00e2m. M\u1ed7i \u0111\u1ea7u v\u00e0o ph\u1ea3i c\u00f3 h\u00e0nh \u0111\u1ed9ng \u0111\u1ea7u ra t\u01b0\u01a1ng \u1ee9ng ho\u1eb7c l\u01b0u tr\u1eef. N\u1ebfu m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u \u0111i v\u00e0o h\u1ec7 th\u1ed1ng nh\u01b0ng kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u n\u00e0o tho\u00e1t ra,<\/p>\n","protected":false},"author":1,"featured_media":4069,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n: H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc \u2705","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. \u0110\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c, s\u1ef1 c\u00e2n b\u1eb1ng v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n th\u00f4ng qua quy tr\u00ecnh xem x\u00e9t to\u00e0n di\u1ec7n n\u00e0y.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[84],"tags":[77,83],"class_list":["post-4068","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dfd","tag-academic","tag-dfd"],"yoast_head":"\nL\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n: H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc \u2705<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1ch x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. \u0110\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c, s\u1ef1 c\u00e2n b\u1eb1ng v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n th\u00f4ng qua quy tr\u00ecnh xem x\u00e9t to\u00e0n di\u1ec7n n\u00e0y.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n: H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc \u2705\" \/>\n<meta property=\"og:description\" content=\"H\u1ecdc c\u00e1ch x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. \u0110\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c, s\u1ef1 c\u00e2n b\u1eb1ng v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n th\u00f4ng qua quy tr\u00ecnh xem x\u00e9t to\u00e0n di\u1ec7n n\u00e0y.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/\" \/>\n<meta property=\"og:site_name\" content=\"Diagrams AI Vietnamese\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-28T20:15:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.diagrams-ai.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/03\/dfd-validation-process-chibi-infographic-16x9-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1664\" \/>\n\t<meta property=\"og:image:height\" content=\"928\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"vpadmin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"vpadmin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"29 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/\",\"url\":\"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/\",\"name\":\"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n: H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc \u2705\",\"isPartOf\":{\"@id\":\"https:\/\/www.diagrams-ai.com\/vn\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.diagrams-ai.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/03\/dfd-validation-process-chibi-infographic-16x9-1.jpg\",\"datePublished\":\"2026-03-28T20:15:11+00:00\",\"author\":{\"@id\":\"https:\/\/www.diagrams-ai.com\/vn\/#\/schema\/person\/ecc36153eaeb4aeaf895589c93d5de12\"},\"description\":\"H\u1ecdc c\u00e1ch x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. \u0110\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c, s\u1ef1 c\u00e2n b\u1eb1ng v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n th\u00f4ng qua quy tr\u00ecnh xem x\u00e9t to\u00e0n di\u1ec7n n\u00e0y.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/#breadcrumb\"},\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/#primaryimage\",\"url\":\"https:\/\/www.diagrams-ai.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/03\/dfd-validation-process-chibi-infographic-16x9-1.jpg\",\"contentUrl\":\"https:\/\/www.diagrams-ai.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/03\/dfd-validation-process-chibi-infographic-16x9-1.jpg\",\"width\":1664,\"height\":928},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.diagrams-ai.com\/vn\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c minh DFD c\u1ee7a b\u1ea1n: Quy tr\u00ecnh xem x\u00e9t t\u1eebng b\u01b0\u1edbc\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.diagrams-ai.com\/vn\/#website\",\"url\":\"https:\/\/www.diagrams-ai.com\/vn\/\",\"name\":\"Diagrams AI Vietnamese\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.diagrams-ai.com\/vn\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"vi\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.diagrams-ai.com\/vn\/#\/schema\/person\/ecc36153eaeb4aeaf895589c93d5de12\",\"name\":\"vpadmin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/www.diagrams-ai.com\/vn\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/56e0eb902506d9cea7c7e209205383146b8e81c0ef2eff693d9d5e0276b3d7e3?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/56e0eb902506d9cea7c7e209205383146b8e81c0ef2eff693d9d5e0276b3d7e3?s=96&d=mm&r=g\",\"caption\":\"vpadmin\"},\"sameAs\":[\"https:\/\/www.diagrams-ai.com\"],\"url\":\"https:\/\/www.diagrams-ai.com\/vn\/author\/vpadmin\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n: H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc \u2705","description":"H\u1ecdc c\u00e1ch x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. \u0110\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c, s\u1ef1 c\u00e2n b\u1eb1ng v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n th\u00f4ng qua quy tr\u00ecnh xem x\u00e9t to\u00e0n di\u1ec7n n\u00e0y.","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:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/","og_locale":"vi_VN","og_type":"article","og_title":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n: H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc \u2705","og_description":"H\u1ecdc c\u00e1ch x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. \u0110\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c, s\u1ef1 c\u00e2n b\u1eb1ng v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n th\u00f4ng qua quy tr\u00ecnh xem x\u00e9t to\u00e0n di\u1ec7n n\u00e0y.","og_url":"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/","og_site_name":"Diagrams AI Vietnamese","article_published_time":"2026-03-28T20:15:11+00:00","og_image":[{"width":1664,"height":928,"url":"https:\/\/www.diagrams-ai.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/03\/dfd-validation-process-chibi-infographic-16x9-1.jpg","type":"image\/jpeg"}],"author":"vpadmin","twitter_card":"summary_large_image","twitter_misc":{"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi":"vpadmin","\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"29 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/","url":"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/","name":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n: H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc \u2705","isPartOf":{"@id":"https:\/\/www.diagrams-ai.com\/vn\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/#primaryimage"},"image":{"@id":"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/#primaryimage"},"thumbnailUrl":"https:\/\/www.diagrams-ai.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/03\/dfd-validation-process-chibi-infographic-16x9-1.jpg","datePublished":"2026-03-28T20:15:11+00:00","author":{"@id":"https:\/\/www.diagrams-ai.com\/vn\/#\/schema\/person\/ecc36153eaeb4aeaf895589c93d5de12"},"description":"H\u1ecdc c\u00e1ch x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. \u0110\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c, s\u1ef1 c\u00e2n b\u1eb1ng v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n th\u00f4ng qua quy tr\u00ecnh xem x\u00e9t to\u00e0n di\u1ec7n n\u00e0y.","breadcrumb":{"@id":"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/#breadcrumb"},"inLanguage":"vi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/"]}]},{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/#primaryimage","url":"https:\/\/www.diagrams-ai.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/03\/dfd-validation-process-chibi-infographic-16x9-1.jpg","contentUrl":"https:\/\/www.diagrams-ai.com\/vn\/wp-content\/uploads\/sites\/10\/2026\/03\/dfd-validation-process-chibi-infographic-16x9-1.jpg","width":1664,"height":928},{"@type":"BreadcrumbList","@id":"https:\/\/www.diagrams-ai.com\/vn\/how-to-validate-your-dfd-step-by-step-review\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.diagrams-ai.com\/vn\/"},{"@type":"ListItem","position":2,"name":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c minh DFD c\u1ee7a b\u1ea1n: Quy tr\u00ecnh xem x\u00e9t t\u1eebng b\u01b0\u1edbc"}]},{"@type":"WebSite","@id":"https:\/\/www.diagrams-ai.com\/vn\/#website","url":"https:\/\/www.diagrams-ai.com\/vn\/","name":"Diagrams AI Vietnamese","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.diagrams-ai.com\/vn\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"vi"},{"@type":"Person","@id":"https:\/\/www.diagrams-ai.com\/vn\/#\/schema\/person\/ecc36153eaeb4aeaf895589c93d5de12","name":"vpadmin","image":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/www.diagrams-ai.com\/vn\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/56e0eb902506d9cea7c7e209205383146b8e81c0ef2eff693d9d5e0276b3d7e3?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/56e0eb902506d9cea7c7e209205383146b8e81c0ef2eff693d9d5e0276b3d7e3?s=96&d=mm&r=g","caption":"vpadmin"},"sameAs":["https:\/\/www.diagrams-ai.com"],"url":"https:\/\/www.diagrams-ai.com\/vn\/author\/vpadmin\/"}]}},"_links":{"self":[{"href":"https:\/\/www.diagrams-ai.com\/vn\/wp-json\/wp\/v2\/posts\/4068","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.diagrams-ai.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.diagrams-ai.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.diagrams-ai.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.diagrams-ai.com\/vn\/wp-json\/wp\/v2\/comments?post=4068"}],"version-history":[{"count":0,"href":"https:\/\/www.diagrams-ai.com\/vn\/wp-json\/wp\/v2\/posts\/4068\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.diagrams-ai.com\/vn\/wp-json\/wp\/v2\/media\/4069"}],"wp:attachment":[{"href":"https:\/\/www.diagrams-ai.com\/vn\/wp-json\/wp\/v2\/media?parent=4068"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.diagrams-ai.com\/vn\/wp-json\/wp\/v2\/categories?post=4068"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.diagrams-ai.com\/vn\/wp-json\/wp\/v2\/tags?post=4068"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}