{"id":1679,"date":"2026-03-28T01:31:05","date_gmt":"2026-03-28T01:31:05","guid":{"rendered":"https:\/\/www.tech-posts.com\/vi\/effort-estimation-dfd-complexity\/"},"modified":"2026-03-28T01:31:05","modified_gmt":"2026-03-28T01:31:05","slug":"effort-estimation-dfd-complexity","status":"publish","type":"post","link":"https:\/\/www.tech-posts.com\/vi\/effort-estimation-dfd-complexity\/","title":{"rendered":"\u01af\u1edbc l\u01b0\u1ee3ng n\u1ed7 l\u1ef1c d\u1ef1a tr\u00ean \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u"},"content":{"rendered":"

\u01af\u1edbc l\u01b0\u1ee3ng ch\u00ednh x\u00e1c d\u1ef1 \u00e1n l\u00e0 n\u1ec1n t\u1ea3ng c\u1ed1t l\u00f5i cho s\u1ef1 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m th\u00e0nh c\u00f4ng. Khi l\u1eadp k\u1ebf ho\u1ea1ch cho m\u1ed9t h\u1ec7 th\u1ed1ng, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u n\u1ec1n t\u1ea3ng s\u1ebd cung c\u1ea5p c\u01a1 s\u1edf v\u1eefng ch\u1eafc \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n nhu c\u1ea7u ngu\u1ed3n l\u1ef1c. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u00f4ng c\u1ee5 tr\u1ef1c quan m\u1ea1nh m\u1ebd \u0111\u1ec3 b\u1ea3n \u0111\u1ed3 h\u00f3a c\u00e1c lu\u1ed3ng n\u00e0y. B\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ea5u tr\u00fac c\u1ee7a DFD, c\u00e1c \u0111\u1ed9i ng\u0169 c\u00f3 th\u1ec3 \u0111\u01b0a ra \u01b0\u1edbc l\u01b0\u1ee3ng n\u1ed7 l\u1ef1c \u0111\u00e1ng tin c\u1eady h\u01a1n so v\u1edbi vi\u1ec7c ch\u1ec9 d\u1ef1a v\u00e0o c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng.<\/p>\n

H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u00e1ch t\u1eadn d\u1ee5ng c\u00e1c ch\u1ec9 s\u1ed1 \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a DFD \u0111\u1ec3 tinh ch\u1ec9nh vi\u1ec7c \u01b0\u1edbc l\u01b0\u1ee3ng n\u1ed7 l\u1ef1c. Ch\u00fang ta s\u1ebd xem x\u00e9t c\u00e1c th\u00e0nh ph\u1ea7n th\u00fac \u0111\u1ea9y \u0111\u1ed9 ph\u1ee9c t\u1ea1p, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ecbnh l\u01b0\u1ee3ng c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y, v\u00e0 quy tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i ph\u00e2n t\u00edch s\u01a1 \u0111\u1ed3 th\u00e0nh c\u00e1c m\u1ed1c th\u1eddi gian d\u1ef1 \u00e1n.<\/p>\n

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

\ud83d\udd0d Hi\u1ec3u r\u00f5 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong l\u1eadp k\u1ebf ho\u1ea1ch<\/h2>\n

S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda v\u1ec1 lu\u1ed3ng d\u1eef li\u1ec7u qua m\u1ed9t h\u1ec7 th\u1ed1ng th\u00f4ng tin. Kh\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 t\u1eadp trung v\u00e0o logic \u0111i\u1ec1u khi\u1ec3n, DFD t\u1eadp trung v\u00e0o vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u. Trong b\u1ed1i c\u1ea3nh \u01b0\u1edbc l\u01b0\u1ee3ng, m\u1ed9t DFD \u0111\u00f3ng vai tr\u00f2 nh\u01b0 b\u1ea3n v\u1ebd thi\u1ebft k\u1ebf cho c\u00f4ng vi\u1ec7c li\u00ean quan.<\/p>\n

    \n
  • C\u00e1c qu\u00e1 tr\u00ecnh:<\/strong> \u0110\u1ea1i di\u1ec7n cho c\u00e1c ph\u00e9p bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u. M\u1ed7i qu\u00e1 tr\u00ecnh th\u01b0\u1eddng t\u01b0\u01a1ng \u1ee9ng v\u1edbi m\u1ed9t ch\u1ee9c n\u0103ng ho\u1eb7c module c\u1ee5 th\u1ec3 trong m\u00e3 ngu\u1ed3n.<\/li>\n
  • Lu\u1ed3ng d\u1eef li\u1ec7u:<\/strong> Hi\u1ec3n th\u1ecb s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh, kho l\u01b0u tr\u1eef v\u00e0 c\u00e1c th\u1ef1c th\u1ec3. Nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y \u0111\u1ea1i di\u1ec7n cho c\u00e1c giao di\u1ec7n v\u00e0 \u0111i\u1ec3m t\u00edch h\u1ee3p.<\/li>\n
  • Kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u:<\/strong> Ch\u1ec9 ra n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef khi kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng. Nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c b\u1ea3ng c\u01a1 s\u1edf d\u1eef li\u1ec7u ho\u1eb7c h\u1ec7 th\u1ed1ng t\u1eadp tin.<\/li>\n
  • C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i:<\/strong> Ngu\u1ed3n ho\u1eb7c \u0111\u00edch c\u1ee7a d\u1eef li\u1ec7u n\u1eb1m ngo\u00e0i h\u1ec7 th\u1ed1ng. Nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y x\u00e1c \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u t\u00edch h\u1ee3p.<\/li>\n<\/ul>\n

    Khi \u01b0\u1edbc l\u01b0\u1ee3ng n\u1ed7 l\u1ef1c, \u0111\u1ed9 \u0111\u1eb7c v\u00e0 t\u00ednh k\u1ebft n\u1ed1i c\u1ee7a c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y cung c\u1ea5p manh m\u1ed1i v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng nh\u1eadn th\u1ee9c c\u1ea7n thi\u1ebft \u0111\u1ec3 tri\u1ec3n khai h\u1ec7 th\u1ed1ng. M\u1ed9t s\u01a1 \u0111\u1ed3 th\u01b0a th\u1edbt v\u1edbi c\u00e1c lu\u1ed3ng tuy\u1ebfn t\u00ednh cho th\u1ea5y \u0111\u1ed9 ph\u1ee9c t\u1ea1p th\u1ea5p h\u01a1n, trong khi m\u1ed9t m\u1ea1ng l\u01b0\u1edbi d\u00e0y \u0111\u1eb7c c\u00e1c t\u01b0\u01a1ng t\u00e1c ng\u1ee5 \u00fd nh\u1eefng th\u00e1ch th\u1ee9c t\u00edch h\u1ee3p \u0111\u00e1ng k\u1ec3.<\/p>\n

    \ud83c\udfd7\ufe0f X\u00e1c \u0111\u1ecbnh c\u00e1c y\u1ebfu t\u1ed1 th\u00fac \u0111\u1ea9y \u0111\u1ed9 ph\u1ee9c t\u1ea1p<\/h2>\n

    Kh\u00f4ng ph\u1ea3i m\u1ecdi lu\u1ed3ng d\u1eef li\u1ec7u n\u00e0o c\u0169ng gi\u1ed1ng nhau. M\u1ed9t s\u1ed1 \u0111\u1ea1i di\u1ec7n cho vi\u1ec7c chuy\u1ec3n d\u1eef li\u1ec7u \u0111\u01a1n gi\u1ea3n, trong khi nh\u1eefng lu\u1ed3ng kh\u00e1c li\u00ean quan \u0111\u1ebfn logic kinh doanh ph\u1ee9c t\u1ea1p, ki\u1ec3m tra t\u00ednh h\u1ee3p l\u1ec7 ho\u1eb7c c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt. \u0110\u1ec3 \u01b0\u1edbc l\u01b0\u1ee3ng ch\u00ednh x\u00e1c, b\u1ea1n ph\u1ea3i x\u00e1c \u0111\u1ecbnh c\u00e1c y\u1ebfu t\u1ed1 c\u1ee5 th\u1ec3 l\u00e0m t\u0103ng \u0111\u1ed9 ph\u1ee9c t\u1ea1p trong s\u01a1 \u0111\u1ed3.<\/p>\n

    1. \u0110\u1ed9 chi ti\u1ebft c\u1ee7a qu\u00e1 tr\u00ecnh<\/h3>\n

    M\u1ee9c \u0111\u1ed9 chi ti\u1ebft trong m\u1ed9t qu\u00e1 tr\u00ecnh l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng. M\u1ed9t qu\u00e1 tr\u00ecnh c\u1ea5p cao nh\u01b0 \u201cX\u1eed l\u00fd \u0111\u01a1n h\u00e0ng\u201d c\u00f3 th\u1ec3 che gi\u1ea5u h\u00e0ng ch\u1ee5c b\u01b0\u1edbc ph\u1ee5. N\u1ebfu DFD \u1edf c\u1ea5p \u0111\u1ed9 cao, vi\u1ec7c \u01b0\u1edbc l\u01b0\u1ee3ng ph\u1ea3i t\u00ednh \u0111\u1ebfn vi\u1ec7c ph\u00e2n r\u00e3 qu\u00e1 tr\u00ecnh n\u00e0y. Ng\u01b0\u1ee3c l\u1ea1i, m\u1ed9t DFD chi ti\u1ebft \u1edf c\u1ea5p \u0111\u1ed9 2 ho\u1eb7c 3 s\u1ebd ti\u1ebft l\u1ed9 c\u00e1c \u0111\u01a1n v\u1ecb c\u00f4ng vi\u1ec7c th\u1ef1c t\u1ebf.<\/p>\n

      \n
    • C\u00e1c qu\u00e1 tr\u00ecnh th\u00f4:<\/strong> Y\u00eau c\u1ea7u nhi\u1ec1u th\u1eddi gian ph\u00e2n t\u00edch \u0111\u1ec3 ph\u00e2n r\u00e3.<\/li>\n
    • C\u00e1c qu\u00e1 tr\u00ecnh chi ti\u1ebft:<\/strong> Cho ph\u00e9p \u01b0\u1edbc l\u01b0\u1ee3ng tr\u1ef1c ti\u1ebfp h\u01a1n nh\u01b0ng c\u00f3 th\u1ec3 b\u1ecf s\u00f3t chi ph\u00ed t\u00edch h\u1ee3p.<\/li>\n<\/ul>\n

      2. Kh\u1ed1i l\u01b0\u1ee3ng lu\u1ed3ng d\u1eef li\u1ec7u<\/h3>\n

      S\u1ed1 l\u01b0\u1ee3ng m\u0169i t\u00ean k\u1ebft n\u1ed1i c\u00e1c y\u1ebfu t\u1ed1 cho th\u1ea5y kh\u1ed1i l\u01b0\u1ee3ng x\u1eed l\u00fd d\u1eef li\u1ec7u. M\u1ed7i m\u0169i t\u00ean \u0111\u1ea1i di\u1ec7n cho m\u1ed9t c\u1ea5u tr\u00fac d\u1eef li\u1ec7u c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c, chuy\u1ec3n \u0111\u1ed5i, l\u01b0u tr\u1eef ho\u1eb7c truy\u1ec1n t\u1ea3i.<\/p>\n

        \n
      • Nhi\u1ec1u lu\u1ed3ng h\u01a1n th\u01b0\u1eddng c\u00f3 ngh\u0129a l\u00e0 nhi\u1ec1u \u0111i\u1ec3m k\u1ebft n\u1ed1i API ho\u1eb7c truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u h\u01a1n.<\/li>\n
      • C\u00e1c lu\u1ed3ng ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 y\u00eau c\u1ea7u x\u1eed l\u00fd l\u1ed7i v\u00e0 logic th\u1eed l\u1ea1i.<\/li>\n<\/ul>\n

        3. T\u01b0\u01a1ng t\u00e1c v\u1edbi kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u<\/h3>\n

        M\u1ed7i t\u01b0\u01a1ng t\u00e1c v\u1edbi kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u \u0111\u1ec1u mang l\u1ea1i c\u00e1c y\u1ebfu t\u1ed1 v\u1ec1 \u0111\u1ed9 tr\u1ec5, v\u1ea5n \u0111\u1ec1 \u0111\u1ed3ng th\u1eddi v\u00e0 qu\u1ea3n l\u00fd l\u01b0\u1ee3c \u0111\u1ed3. M\u1ed9t qu\u00e1 tr\u00ecnh \u0111\u1ecdc v\u00e0 ghi v\u00e0o nhi\u1ec1u kho l\u01b0u tr\u1eef c\u00f9ng l\u00fac s\u1ebd ph\u1ee9c t\u1ea1p h\u01a1n so v\u1edbi qu\u00e1 tr\u00ecnh t\u01b0\u01a1ng t\u00e1c v\u1edbi m\u1ed9t kho duy nh\u1ea5t.<\/p>\n

        4. V\u00f2ng ph\u1ea3n h\u1ed3i<\/h3>\n

        C\u00e1c v\u00f2ng l\u1eb7p trong s\u01a1 \u0111\u1ed3 cho th\u1ea5y x\u1eed l\u00fd l\u1eb7p l\u1ea1i ho\u1eb7c thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i. \u0110\u00e2y th\u01b0\u1eddng l\u00e0 nh\u1eefng khu v\u1ef1c d\u1ec5 x\u1ea3y ra l\u1ed7i nh\u1ea5t trong ph\u00e1t tri\u1ec3n. Vi\u1ec7c \u01b0\u1edbc l\u01b0\u1ee3ng cho c\u00e1c v\u00f2ng l\u1eb7p \u0111\u00f2i h\u1ecfi ph\u1ea3i t\u00ednh \u0111\u1ebfn c\u00e1c t\u00ecnh hu\u1ed1ng ki\u1ec3m th\u1eed n\u01a1i tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c duy tr\u00ec qua nhi\u1ec1u chu k\u1ef3 li\u00ean ti\u1ebfp.<\/p>\n

        \ud83d\udccf C\u00e1c ch\u1ec9 s\u1ed1 \u0111\u1ecbnh l\u01b0\u1ee3ng cho \u01b0\u1edbc t\u00ednh<\/h2>\n

        \u0110\u1ec3 chuy\u1ec3n t\u1eeb quan s\u00e1t \u0111\u1ecbnh t\u00ednh sang \u01b0\u1edbc t\u00ednh \u0111\u1ecbnh l\u01b0\u1ee3ng, c\u00e1c ch\u1ec9 s\u1ed1 c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c tr\u00edch xu\u1ea5t t\u1eeb s\u01a1 \u0111\u1ed3 DFD c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng. Nh\u1eefng ch\u1ec9 s\u1ed1 n\u00e0y gi\u00fap chu\u1ea9n h\u00f3a qu\u00e1 tr\u00ecnh \u01b0\u1edbc t\u00ednh tr\u00ean c\u00e1c d\u1ef1 \u00e1n kh\u00e1c nhau.<\/p>\n\n\n\n\n\n\n\n\n\n
        Ch\u1ec9 s\u1ed1<\/th>\nM\u00f4 t\u1ea3<\/th>\nT\u00e1c \u0111\u1ed9ng \u0111\u1ebfn n\u1ed7 l\u1ef1c<\/th>\n<\/tr>\n<\/thead>\n
        S\u1ed1 l\u01b0\u1ee3ng qu\u00e1 tr\u00ecnh<\/td>\nT\u1ed5ng s\u1ed1 l\u01b0\u1ee3ng n\u00fat chuy\u1ec3n \u0111\u1ed5i.<\/td>\nLi\u00ean h\u1ec7 tr\u1ef1c ti\u1ebfp v\u1edbi \u0111i\u1ec3m ch\u1ee9c n\u0103ng.<\/td>\n<\/tr>\n
        S\u1ed1 l\u01b0\u1ee3ng lu\u1ed3ng<\/td>\nT\u1ed5ng s\u1ed1 l\u01b0\u1ee3ng m\u0169i t\u00ean di chuy\u1ec3n d\u1eef li\u1ec7u.<\/td>\nCh\u1ec9 ra \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u1ec1 t\u00edch h\u1ee3p v\u00e0 giao di\u1ec7n.<\/td>\n<\/tr>\n
        S\u1ed1 l\u01b0\u1ee3ng kho l\u01b0u tr\u1eef<\/td>\nT\u1ed5ng s\u1ed1 l\u01b0\u1ee3ng kho d\u1eef li\u1ec7u.<\/td>\n\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 n\u1ed7 l\u1ef1c chuy\u1ec3n \u0111\u1ed5i.<\/td>\n<\/tr>\n
        T\u1ef7 l\u1ec7 k\u1ebft n\u1ed1i<\/td>\nT\u1ef7 l\u1ec7 gi\u1eefa lu\u1ed3ng v\u00e0 qu\u00e1 tr\u00ecnh.<\/td>\nT\u1ef7 l\u1ec7 cao cho th\u1ea5y c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 li\u00ean k\u1ebft ch\u1eb7t ch\u1ebd.<\/td>\n<\/tr>\n
        S\u1ed1 l\u01b0\u1ee3ng th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i<\/td>\nS\u1ed1 l\u01b0\u1ee3ng h\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i tham gia.<\/td>\nL\u00e0m t\u0103ng r\u1ee7i ro giao ti\u1ebfp v\u00e0 ph\u1ee5 thu\u1ed9c.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        B\u1eb1ng c\u00e1ch c\u1ed9ng d\u1ed3n c\u00e1c gi\u00e1 tr\u1ecb n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t \u0111i\u1ec3m s\u1ed1 ph\u1ee9c t\u1ea1p. V\u00ed d\u1ee5, m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u01a1n gi\u1ea3n c\u00f3 th\u1ec3 c\u00f3 5 qu\u00e1 tr\u00ecnh v\u00e0 10 lu\u1ed3ng, trong khi m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 c\u00f3 50 qu\u00e1 tr\u00ecnh v\u00e0 150 lu\u1ed3ng. \u0110i\u1ec3m s\u1ed1 n\u00e0y sau \u0111\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c nh\u00e2n v\u1edbi m\u1ed9t h\u1ec7 s\u1ed1 n\u1ed7 l\u1ef1c c\u01a1 s\u1edf \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh d\u1ef1a tr\u00ean d\u1eef li\u1ec7u l\u1ecbch s\u1eed.<\/p>\n

        \ud83d\udee0\ufe0f Quy tr\u00ecnh \u01b0\u1edbc t\u00ednh<\/h2>\n

        Chuy\u1ec3n \u0111\u1ed5i m\u1ed9t s\u01a1 \u0111\u1ed3 DFD th\u00e0nh \u01b0\u1edbc t\u00ednh n\u1ed7 l\u1ef1c \u0111\u00f2i h\u1ecfi m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac. Tu\u00e2n theo c\u00e1c b\u01b0\u1edbc sau \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c trong k\u1ebf ho\u1ea1ch c\u1ee7a b\u1ea1n.<\/p>\n

        B\u01b0\u1edbc 1: X\u00e1c minh t\u00ednh \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a s\u01a1 \u0111\u1ed3<\/h3>\n

        Tr\u01b0\u1edbc khi \u01b0\u1edbc t\u00ednh, h\u00e3y \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 DFD ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c c\u00e1c y\u00eau c\u1ea7u. Vi\u1ec7c thi\u1ebfu c\u00e1c lu\u1ed3ng ho\u1eb7c th\u1ef1c th\u1ec3 s\u1ebd d\u1eabn \u0111\u1ebfn \u01b0\u1edbc t\u00ednh th\u1ea5p h\u01a1n th\u1ef1c t\u1ebf. Ki\u1ec3m tra xem m\u1ed7i y\u00eau c\u1ea7u d\u1eef li\u1ec7u c\u00f3 m\u1ed9t lu\u1ed3ng t\u01b0\u01a1ng \u1ee9ng v\u00e0 m\u1ed7i qu\u00e1 tr\u00ecnh c\u00f3 \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng hay kh\u00f4ng.<\/p>\n

        B\u01b0\u1edbc 2: Ph\u00e2n lo\u1ea1i \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a qu\u00e1 tr\u00ecnh<\/h3>\n

        Kh\u00f4ng ph\u1ea3i m\u1ecdi qu\u00e1 tr\u00ecnh n\u00e0o c\u0169ng y\u00eau c\u1ea7u c\u00f9ng m\u1ed9t m\u1ee9c \u0111\u1ed9 n\u1ed7 l\u1ef1c. G\u00e1n m\u1ed9t tr\u1ecdng s\u1ed1 \u0111\u1ed9 ph\u1ee9c t\u1ea1p cho t\u1eebng qu\u00e1 tr\u00ecnh d\u1ef1a tr\u00ean logic c\u1ee7a n\u00f3.<\/p>\n

          \n
        • \u0110\u01a1n gi\u1ea3n:<\/strong>\u00c1nh x\u1ea1 ho\u1eb7c truy xu\u1ea5t d\u1eef li\u1ec7u tr\u1ef1c ti\u1ebfp. (Tr\u1ecdng s\u1ed1: 1)<\/li>\n
        • Trung b\u00ecnh:<\/strong> Bao g\u1ed3m x\u00e1c th\u1ef1c, t\u00ednh to\u00e1n ho\u1eb7c \u0111\u1ecbnh d\u1ea1ng. (\u0110i\u1ec3m tr\u1ecdng s\u1ed1: 2)<\/li>\n
        • Ph\u1ee9c t\u1ea1p:<\/strong> Li\u00ean quan \u0111\u1ebfn nhi\u1ec1u kho d\u1eef li\u1ec7u, API b\u00ean ngo\u00e0i ho\u1eb7c c\u00e1c thu\u1eadt to\u00e1n ph\u1ee9c t\u1ea1p. (\u0110i\u1ec3m tr\u1ecdng s\u1ed1: 3)<\/li>\n<\/ul>\n

          B\u01b0\u1edbc 3: T\u00ednh to\u00e1n N\u1ed7 l\u1ef1c C\u01a1 b\u1ea3n<\/h3>\n

          Nh\u00e2n s\u1ed1 l\u01b0\u1ee3ng quy tr\u00ecnh trong m\u1ed7i lo\u1ea1i v\u1edbi tr\u1ecdng s\u1ed1 t\u01b0\u01a1ng \u1ee9ng c\u1ee7a ch\u00fang. C\u1ed9ng c\u00e1c gi\u00e1 tr\u1ecb n\u00e0y l\u1ea1i \u0111\u1ec3 c\u00f3 \u0110i\u1ec3m \u0110\u1ed9 Ph\u1ee9c T\u1ea1p C\u01a1 b\u1ea3n (BCS).<\/p>\n

          C\u00f4ng th\u1ee9c:<\/em> BCS = (S\u1ed1 l\u01b0\u1ee3ng \u0110\u01a1n gi\u1ea3n \u00d7 1) + (S\u1ed1 l\u01b0\u1ee3ng Trung b\u00ecnh \u00d7 2) + (S\u1ed1 l\u01b0\u1ee3ng Ph\u1ee9c t\u1ea1p \u00d7 3)<\/p>\n

          B\u01b0\u1edbc 4: \u0110i\u1ec1u ch\u1ec9nh theo \u0110\u1ed9 Ph\u1ee9c T\u1ea1p D\u00f2ng D\u1eef Li\u1ec7u<\/h3>\n

          L\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn \u0111i qua l\u00e0m t\u0103ng n\u1ed7 l\u1ef1c c\u1ea7n thi\u1ebft cho ph\u00e1t tri\u1ec3n giao di\u1ec7n. \u00c1p d\u1ee5ng h\u1ec7 s\u1ed1 nh\u00e2n d\u00f2ng d\u1eef li\u1ec7u d\u1ef1a tr\u00ean t\u1ed5ng s\u1ed1 lu\u1ed3ng so v\u1edbi s\u1ed1 l\u01b0\u1ee3ng quy tr\u00ecnh.<\/p>\n

            \n
          • T\u1ef7 l\u1ec7 Th\u1ea5p (\u2264 2 lu\u1ed3ng m\u1ed7i quy tr\u00ecnh):<\/strong>H\u1ec7 s\u1ed1 nh\u00e2n 1.0<\/li>\n
          • T\u1ef7 l\u1ec7 Trung b\u00ecnh (3-5 lu\u1ed3ng m\u1ed7i quy tr\u00ecnh):<\/strong>H\u1ec7 s\u1ed1 nh\u00e2n 1.2<\/li>\n
          • T\u1ef7 l\u1ec7 Cao (> 5 lu\u1ed3ng m\u1ed7i quy tr\u00ecnh):<\/strong>H\u1ec7 s\u1ed1 nh\u00e2n 1.5<\/li>\n<\/ul>\n

            B\u01b0\u1edbc 5: Xem x\u00e9t C\u00e1c Ph\u1ee5 Thu\u1ed9c B\u00ean Ngo\u00e0i<\/h3>\n

            C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i t\u1ea1o ra r\u1ee7i ro. M\u1ed7i h\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i \u0111\u1ec1u y\u00eau c\u1ea7u ki\u1ec3m th\u1eed t\u00edch h\u1ee3p, c\u1ea5u h\u00ecnh b\u1ea3o m\u1eadt v\u00e0 ph\u1ed1i h\u1ee3p v\u1edbi nh\u00e0 cung c\u1ea5p ti\u1ec1m n\u0103ng. Th\u00eam m\u1ed9t kho\u1ea3ng th\u1eddi gian c\u1ed1 \u0111\u1ecbnh cho m\u1ed7i th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i.<\/p>\n

            \u26a0\ufe0f \u0110i\u1ec1u ch\u1ec9nh theo R\u1ee7i ro v\u00e0 S\u1ef1 Kh\u00f4ng Ch\u1eafc Ch\u1eafn<\/h2>\n

            Ngay c\u1ea3 v\u1edbi DFD chi ti\u1ebft, s\u1ef1 kh\u00f4ng ch\u1eafc ch\u1eafn v\u1eabn t\u1ed3n t\u1ea1i. C\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 thay \u0111\u1ed5i y\u00eau c\u1ea7u ho\u1eb7c n\u1ee3 k\u1ef9 thu\u1eadt c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i n\u1ed7 l\u1ef1c c\u1ea7n thi\u1ebft. \u0110i\u1ec1u ch\u1ec9nh \u01b0\u1edbc t\u00ednh c\u1ee7a b\u1ea1n \u0111\u1ec3 t\u00ednh \u0111\u1ebfn nh\u1eefng r\u1ee7i ro n\u00e0y.<\/p>\n

            1. T\u00ednh bi\u1ebfn \u0111\u1ed9ng c\u1ee7a Y\u00eau c\u1ea7u<\/h3>\n

            N\u1ebfu y\u00eau c\u1ea7u kinh doanh c\u00f3 kh\u1ea3 n\u0103ng thay \u0111\u1ed5i trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n, DFD c\u00f3 th\u1ec3 c\u1ea7n \u0111\u01b0\u1ee3c ch\u1ec9nh s\u1eeda \u0111\u00e1ng k\u1ec3. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u01b0 v\u1eady, h\u00e3y th\u00eam m\u1ed9t kho\u1ea3n d\u1ef1 ph\u00f2ng 15-20% v\u00e0o t\u1ed5ng n\u1ed7 l\u1ef1c.<\/p>\n

            2. R\u00e0o c\u1ea3n K\u1ef9 thu\u1eadt<\/h3>\n

            C\u00e1c h\u1ec7 th\u1ed1ng c\u0169 ho\u1eb7c y\u00eau c\u1ea7u h\u1ea1 t\u1ea7ng c\u1ee5 th\u1ec3 c\u00f3 th\u1ec3 l\u00e0m ph\u1ee9c t\u1ea1p c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u. N\u1ebfu DFD cho th\u1ea5y d\u1eef li\u1ec7u \u0111ang di chuy\u1ec3n \u0111\u1ebfn m\u1ed9t m\u00e1y ch\u1ee7 ch\u00ednh c\u0169, n\u1ed7 l\u1ef1c x\u1eed l\u00fd k\u1ebft n\u1ed1i \u0111\u00f3 c\u00f3 th\u1ec3 cao h\u01a1n so v\u1edbi c\u00e1c l\u1eddi g\u1ecdi API ti\u00eau chu\u1ea9n.<\/p>\n

            3. Tr\u00ecnh \u0111\u1ed9 K\u1ef9 n\u0103ng c\u1ee7a \u0110\u1ed9i Nh\u00f3m<\/h3>\n

            Vi\u1ec7c \u01b0\u1edbc t\u00ednh gi\u1ea3 \u0111\u1ecbnh tr\u00ecnh \u0111\u1ed9 c\u01a1 b\u1ea3n. N\u1ebfu \u0111\u1ed9i nh\u00f3m m\u1edbi l\u00e0m quen v\u1edbi l\u0129nh v\u1ef1c ho\u1eb7c c\u00f4ng ngh\u1ec7, \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a c\u00e1c quy tr\u00ecnh DFD c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn th\u1eddi gian h\u1ecdc h\u1ecfi nhi\u1ec1u h\u01a1n. \u0110i\u1ec1u ch\u1ec9nh th\u1eddi gian m\u1ed7i \u0111\u01a1n v\u1ecb quy tr\u00ecnh cho ph\u00f9 h\u1ee3p.<\/p>\n

            \ud83d\udeab Nh\u1eefng Sai L\u1ea7m Ph\u1ed5 Bi\u1ebfn trong Ph\u00e2n T\u00edch DFD<\/h2>\n

            Tr\u00e1nh nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a \u01b0\u1edbc t\u00ednh. M\u1ed9t s\u1ed1 b\u1eaby c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn sai l\u1ec7ch \u0111\u00e1ng k\u1ec3.<\/p>\n

              \n
            • B\u1ecf qua X\u00e1c th\u1ef1c D\u1eef li\u1ec7u:<\/strong>M\u1ed9t DFD cho th\u1ea5y d\u1eef li\u1ec7u \u0111ang di chuy\u1ec3n, nh\u01b0ng kh\u00f4ng hi\u1ec3n th\u1ecb c\u00e1c quy t\u1eafc \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho n\u00f3. Logic x\u00e1c th\u1ef1c th\u01b0\u1eddng chi\u1ebfm t\u1eeb 20-30% n\u1ed7 l\u1ef1c c\u1ee7a quy tr\u00ecnh.<\/li>\n
            • B\u1ecf qua X\u1eed l\u00fd L\u1ed7i:<\/strong> C\u00e1c \u0111\u01b0\u1eddng \u0111i thu\u1eadn l\u1ee3i d\u1ec5 d\u00e0ng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n. C\u00e1c \u0111\u01b0\u1eddng \u0111i l\u1ed7i, th\u1eed l\u1ea1i v\u00e0 ghi log th\u00eam s\u1ef1 ph\u1ee9c t\u1ea1p \u1ea9n s\u00e2u v\u00e0o m\u1ed7i lu\u1ed3ng.<\/li>\n
            • Gi\u1ea3 \u0111\u1ecbnh t\u0103ng tr\u01b0\u1edfng tuy\u1ebfn t\u00ednh:<\/strong> S\u1ef1 ph\u1ee9c t\u1ea1p th\u01b0\u1eddng t\u0103ng theo c\u00e1ch phi tuy\u1ebfn. Vi\u1ec7c th\u00eam m\u1ed9t kho d\u1eef li\u1ec7u n\u1eefa c\u00f3 th\u1ec3 l\u00e0m t\u0103ng ph\u1ee9c t\u1ea1p k\u1ebft n\u1ed1i theo c\u1ea5p s\u1ed1 nh\u00e2n do y\u00eau c\u1ea7u b\u1ea3o to\u00e0n t\u00ednh nh\u1ea5t qu\u00e1n giao d\u1ecbch.<\/li>\n
            • B\u1ecf qua an ninh:<\/strong>C\u00e1c l\u1edbp m\u00e3 h\u00f3a, x\u00e1c th\u1ef1c v\u00e0 \u1ee7y quy\u1ec1n th\u01b0\u1eddng \u0111\u01b0\u1ee3c ng\u1ea7m hi\u1ec3u trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u. C\u1ea7n ph\u1ea3i r\u00f5 r\u00e0ng t\u00ednh \u0111\u1ebfn c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y trong qu\u00e1 tr\u00ecnh \u01b0\u1edbc t\u00ednh.<\/li>\n
            • Ch\u1ec9 t\u1eadp trung v\u00e0o c\u00e1c qu\u00e1 tr\u00ecnh:<\/strong>C\u00e1c kho d\u1eef li\u1ec7u v\u00e0 lu\u1ed3ng d\u1eef li\u1ec7u th\u01b0\u1eddng m\u1ea5t nhi\u1ec1u th\u1eddi gian h\u01a1n \u0111\u1ec3 thi\u1ebft l\u1eadp v\u00e0 ki\u1ec3m th\u1eed so v\u1edbi ch\u00ednh c\u00e1c qu\u00e1 tr\u00ecnh.<\/li>\n<\/ul>\n

              \ud83d\udcc5 T\u00edch h\u1ee3p c\u00e1c \u01b0\u1edbc t\u00ednh v\u00e0o l\u1ecbch tr\u00ecnh d\u1ef1 \u00e1n<\/h2>\n

              Sau khi t\u00ednh to\u00e1n n\u1ed7 l\u1ef1c, n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh l\u1ecbch tr\u00ecnh. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m ph\u00e2n b\u1ed5 ngu\u1ed3n l\u1ef1c v\u00e0 x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1ed1c quan tr\u1ecdng.<\/p>\n

                \n
              • Giao h\u00e0ng theo giai \u0111o\u1ea1n:<\/strong>Nh\u00f3m c\u00e1c qu\u00e1 tr\u00ecnh theo ph\u1ee5 thu\u1ed9c lu\u1ed3ng d\u1eef li\u1ec7u. Giao c\u00e1c lu\u1ed3ng \u01b0u ti\u00ean cao tr\u01b0\u1edbc \u0111\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro.<\/li>\n
              • C\u00e1c lu\u1ed3ng c\u00f4ng vi\u1ec7c song song:<\/strong>N\u1ebfu c\u00e1c qu\u00e1 tr\u00ecnh \u0111\u1ed9c l\u1eadp v\u1edbi nhau, ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n song song. S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c c\u1ee5m \u0111\u1ed9c l\u1eadp.<\/li>\n
              • Ki\u1ec3m th\u1eed t\u00edch h\u1ee3p:<\/strong>L\u00ean l\u1ecbch th\u1eddi gian ri\u00eang \u0111\u1ec3 ki\u1ec3m th\u1eed t\u00ednh to\u00e0n v\u1eb9n lu\u1ed3ng d\u1eef li\u1ec7u. \u0110\u00e2y th\u01b0\u1eddng l\u00e0 \u0111i\u1ec3m m\u00e0 c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ph\u1ee9c t\u1ea1p th\u1ea5t b\u1ea1i.<\/li>\n<\/ul>\n

                B\u1eb1ng c\u00e1ch \u0111\u1ed3ng b\u1ed9 h\u00f3a l\u1ecbch tr\u00ecnh v\u1edbi c\u00e1c ph\u1ee5 thu\u1ed9c c\u1ea5u tr\u00fac \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n trong s\u01a1 \u0111\u1ed3, b\u1ea1n t\u1ea1o ra m\u1ed9t khung th\u1eddi gian th\u1ef1c t\u1ebf, t\u00f4n tr\u1ecdng d\u00f2ng ch\u1ea3y t\u1ef1 nhi\u00ean c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n

                \ud83d\udd04 Duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c theo th\u1eddi gian<\/h2>\n

                C\u00e1c \u01b0\u1edbc t\u00ednh kh\u00f4ng ph\u1ea3i l\u00e0 c\u1ed1 \u0111\u1ecbnh. Khi d\u1ef1 \u00e1n ti\u1ebfn tri\u1ec3n v\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u thay \u0111\u1ed5i, c\u00e1c \u01b0\u1edbc t\u00ednh c\u1ea7n \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh l\u1ea1i.<\/p>\n

                  \n
                • C\u1eadp nh\u1eadt c\u01a1 s\u1edf:<\/strong>Khi s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ho\u00e0n thi\u1ec7n, c\u1eadp nh\u1eadt c\u00e1c \u01b0\u1edbc t\u00ednh ban \u0111\u1ea7u b\u1eb1ng c\u00e1c \u0111i\u1ec3m s\u1ed1 ph\u1ee9c t\u1ea1p th\u1ef1c t\u1ebf.<\/li>\n
                • Ph\u00e2n t\u00edch h\u1ed3i t\u1ed1:<\/strong>Sau m\u1ed7i giai \u0111o\u1ea1n, so s\u00e1nh \u0111i\u1ec3m s\u1ed1 ph\u1ee9c t\u1ea1p \u01b0\u1edbc t\u00ednh v\u1edbi n\u1ed7 l\u1ef1c th\u1ef1c t\u1ebf \u0111\u00e3 b\u1ecf ra. \u0110i\u1ec1u n\u00e0y gi\u00fap tinh ch\u1ec9nh c\u00e1c h\u1ec7 s\u1ed1 tr\u1ecdng s\u1ed1 cho c\u00e1c d\u1ef1 \u00e1n t\u01b0\u01a1ng lai.<\/li>\n
                • Qu\u1ea3n l\u00fd thay \u0111\u1ed5i:<\/strong>M\u1ecdi thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ec1u ph\u1ea3i k\u00edch ho\u1ea1t vi\u1ec7c \u01b0\u1edbc t\u00ednh l\u1ea1i. \u0110\u1eebng gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng vi\u1ec7c th\u00eam m\u1ed9t lu\u1ed3ng nh\u1ecf s\u1ebd kh\u00f4ng c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3.<\/li>\n<\/ul>\n

                  \ud83d\udee1\ufe0f Nh\u1eefng c\u00e2n nh\u1eafc cu\u1ed1i c\u00f9ng cho l\u1eadp k\u1ebf ho\u1ea1ch d\u1ef1a tr\u00ean s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/h2>\n

                  S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ec3 \u01b0\u1edbc t\u00ednh n\u1ed7 l\u1ef1c cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p c\u00f3 c\u1ea5u tr\u00fac, kh\u00e1ch quan \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 quy m\u00f4 d\u1ef1 \u00e1n. \u0110i\u1ec1u n\u00e0y chuy\u1ec3n cu\u1ed9c th\u1ea3o lu\u1eadn kh\u1ecfi s\u1ef1 ph\u1ecfng \u0111o\u00e1n sang ph\u00e2n t\u00edch ki\u1ebfn tr\u00fac d\u1eef li\u1ec7u th\u1ef1c t\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n

                  M\u1eb7c d\u00f9 kh\u00f4ng c\u00f3 m\u00f4 h\u00ecnh n\u00e0o l\u00e0 ho\u00e0n h\u1ea3o, nh\u01b0ng c\u00e1ch ti\u1ebfp c\u1eadn \u0111\u1ed9 ph\u1ee9c t\u1ea1p s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u mang l\u1ea1i nhi\u1ec1u l\u1ee3i th\u1ebf \u0111\u00e1ng k\u1ec3:<\/p>\n

                    \n
                  • R\u00f5 r\u00e0ng v\u1ec1 m\u1eb7t tr\u1ef1c quan:<\/strong>C\u00e1c b\u00ean li\u00ean quan c\u00f3 th\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u, gi\u00fap vi\u1ec7c minh b\u1ea1ch cho n\u1ed7 l\u1ef1c tr\u1edf n\u00ean r\u00f5 r\u00e0ng h\u01a1n.<\/li>\n
                  • Ph\u00e1t hi\u1ec7n s\u1edbm:<\/strong>C\u00e1c lu\u1ed3ng ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u vi\u1ebft m\u00e3, cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh ki\u1ebfn tr\u00fac.<\/li>\n
                  • T\u00ednh nh\u1ea5t qu\u00e1n:<\/strong>\u00c1p d\u1ee5ng c\u00f9ng m\u1ed9t b\u1ed9 ch\u1ec9 s\u1ed1 tr\u00ean c\u00e1c d\u1ef1 \u00e1n kh\u00e1c nhau gi\u00fap qu\u1ea3n l\u00fd danh m\u1ee5c d\u1ef1 \u00e1n t\u1ed1t h\u01a1n.<\/li>\n<\/ul>\n

                    H\u00e3y nh\u1edb r\u1eb1ng m\u1ee5c ti\u00eau kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 ho\u00e0n h\u1ea3o, m\u00e0 l\u00e0 l\u1eadp k\u1ebf ho\u1ea1ch c\u00f3 c\u0103n c\u1ee9. Th\u01b0\u1eddng xuy\u00ean xem x\u00e9t l\u1ea1i c\u00e1c y\u1ebfu t\u1ed1 ph\u1ee9c t\u1ea1p c\u1ee7a b\u1ea1n v\u00e0 c\u1eadp nh\u1eadt c\u00e1c chu\u1ea9n m\u1ef1c ban \u0111\u1ea7u. Khi \u0111\u1ed9i ng\u0169 c\u1ee7a b\u1ea1n t\u00edch l\u0169y \u0111\u01b0\u1ee3c kinh nghi\u1ec7m v\u1edbi c\u00e1c lo\u1ea1i lu\u1ed3ng v\u00e0 quy tr\u00ecnh c\u1ee5 th\u1ec3, kh\u1ea3 n\u0103ng d\u1ef1 \u0111o\u00e1n n\u1ed7 l\u1ef1c s\u1ebd c\u1ea3i thi\u1ec7n m\u1ed9t c\u00e1ch t\u1ef1 nhi\u00ean.<\/p>\n

                    B\u1eb1ng c\u00e1ch coi DFD l\u00e0 c\u00f4ng c\u1ee5 \u01b0\u1edbc l\u01b0\u1ee3ng ch\u00ednh, b\u1ea1n s\u1ebd \u0111\u1ed3ng b\u1ed9 h\u00f3a k\u1ebf ho\u1ea1ch c\u1ee7a m\u00ecnh v\u1edbi b\u1ea3n ch\u1ea5t c\u1ed1t l\u00f5i c\u1ee7a h\u1ec7 th\u1ed1ng m\u00e0 b\u1ea1n \u0111ang x\u00e2y d\u1ef1ng. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn ng\u00e2n s\u00e1ch, l\u1ecbch tr\u00ecnh th\u1ef1c t\u1ebf h\u01a1n v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 vi\u1ec7c tri\u1ec3n khai c\u00e1c gi\u1ea3i ph\u00e1p ph\u1ea7n m\u1ec1m th\u00e0nh c\u00f4ng h\u01a1n.<\/p>\n","protected":false},"excerpt":{"rendered":"

                    \u01af\u1edbc l\u01b0\u1ee3ng ch\u00ednh x\u00e1c d\u1ef1 \u00e1n l\u00e0 n\u1ec1n t\u1ea3ng c\u1ed1t l\u00f5i cho s\u1ef1 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m th\u00e0nh c\u00f4ng. Khi l\u1eadp k\u1ebf ho\u1ea1ch cho m\u1ed9t h\u1ec7 th\u1ed1ng, vi\u1ec7c hi\u1ec3u r\u00f5…<\/p>\n","protected":false},"author":1,"featured_media":1680,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"H\u01b0\u1edbng d\u1eabn \u01b0\u1edbc l\u01b0\u1ee3ng \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u00e0 n\u1ed7 l\u1ef1c c\u1ee7a DFD","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch \u01b0\u1edbc l\u01b0\u1ee3ng n\u1ed7 l\u1ef1c d\u1ef1 \u00e1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u. C\u00e1c ch\u1ec9 s\u1ed1 chi ti\u1ebft, c\u00e1c b\u01b0\u1edbc v\u00e0 ph\u00e2n t\u00edch \u0111\u1ec3 l\u1eadp k\u1ebf ho\u1ea1ch ch\u00ednh x\u00e1c.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[90],"tags":[87,89],"class_list":["post-1679","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dfd","tag-academic","tag-dfd"],"yoast_head":"\nH\u01b0\u1edbng d\u1eabn \u01b0\u1edbc l\u01b0\u1ee3ng \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u00e0 n\u1ed7 l\u1ef1c c\u1ee7a DFD<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1ch \u01b0\u1edbc l\u01b0\u1ee3ng n\u1ed7 l\u1ef1c d\u1ef1 \u00e1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u. 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