{"id":4188,"date":"2026-03-25T08:53:25","date_gmt":"2026-03-25T08:53:25","guid":{"rendered":"https:\/\/www.diagrams-ai.com\/vn\/dfd-without-tools-hand-drawing-guide\/"},"modified":"2026-03-25T08:53:25","modified_gmt":"2026-03-25T08:53:25","slug":"dfd-without-tools-hand-drawing-guide","status":"publish","type":"post","link":"https:\/\/www.diagrams-ai.com\/vn\/dfd-without-tools-hand-drawing-guide\/","title":{"rendered":"S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u m\u00e0 kh\u00f4ng c\u1ea7n c\u00f4ng c\u1ee5: C\u00e1ch v\u1ebd c\u00e1c s\u01a1 \u0111\u1ed3 hi\u1ec7u qu\u1ea3 b\u1eb1ng tay ho\u1eb7c trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u01a1n gi\u1ea3n"},"content":{"rendered":"

Vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) kh\u00f4ng \u0111\u00f2i h\u1ecfi gi\u1ea5y ph\u00e9p ph\u1ea7n m\u1ec1m \u0111\u1eaft ti\u1ec1n hay giao di\u1ec7n ph\u1ee9c t\u1ea1p. Th\u1eadt ra, b\u1eaft \u0111\u1ea7u b\u1eb1ng nh\u1eefng c\u00f4ng c\u1ee5 \u0111\u01a1n gi\u1ea3n th\u01b0\u1eddng mang l\u1ea1i k\u1ebft qu\u1ea3 r\u00f5 r\u00e0ng nh\u1ea5t. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u00e1ch thi\u1ebft k\u1ebf c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ch\u00ednh x\u00e1c b\u1eb1ng gi\u1ea5y, b\u1ea3ng tr\u1eafng ho\u1eb7c c\u00e1c tr\u00ecnh ch\u1ec9nh s\u1eeda k\u1ef9 thu\u1eadt s\u1ed1 c\u01a1 b\u1ea3n. B\u1eb1ng c\u00e1ch t\u1eadp trung v\u00e0o c\u1ea5u tr\u00fac v\u00e0 logic thay v\u00ec th\u1ea9m m\u1ef9, b\u1ea1n c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh h\u1ec7 th\u1ed1ng v\u1eefng ch\u1eafc, v\u01b0\u1ee3t qua th\u1eed th\u00e1ch c\u1ee7a th\u1eddi gian.<\/p>\n

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\"A<\/figure>\n<\/div>\n

\ud83e\udde0 T\u1ea1i sao b\u1eaft \u0111\u1ea7u m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea7n m\u1ec1m chuy\u00ean d\u1ee5ng?<\/h2>\n

Nhi\u1ec1u chuy\u00ean gia nh\u1ea3y th\u1eb3ng v\u00e0o c\u00e1c c\u00f4ng c\u1ee5 k\u1ef9 thu\u1eadt s\u1ed1, ch\u1ec9 \u0111\u1ec3 b\u1ecb l\u1ea1c trong c\u00e1c t\u00f9y ch\u1ecdn \u0111\u1ecbnh d\u1ea1ng. V\u1ebd tay bu\u1ed9c b\u1ea1n ph\u1ea3i t\u1eadp trung v\u00e0o logic c\u1ed1t l\u00f5i c\u1ee7a h\u1ec7 th\u1ed1ng. Khi b\u1ea1n d\u00f9ng b\u00fat ho\u1eb7c b\u00fat d\u1ea1 c\u01a1 b\u1ea3n, b\u1ea1n b\u1ecb gi\u1edbi h\u1ea1n \u1edf nh\u1eefng y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu. R\u00e0o c\u1ea3n n\u00e0y th\u1ef1c ra l\u1ea1i l\u00e0 m\u1ed9t l\u1ee3i th\u1ebf. N\u00f3 ng\u0103n b\u1ea1n m\u1ea5t h\u00e0ng gi\u1edd \u0111\u1ec3 ho\u00e0n thi\u1ec7n m\u00e0u s\u1eafc hay h\u00ecnh d\u1ea1ng tr\u01b0\u1edbc khi logic \u0111\u00e3 v\u1eefng ch\u1eafc.<\/p>\n

D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng l\u1ee3i th\u1ebf ch\u00ednh c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p th\u1ee7 c\u00f4ng:<\/p>\n

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  • T\u1ed1c \u0111\u1ed9:<\/strong>V\u1ebd ph\u00e1c th\u1ea3o nhanh h\u01a1n vi\u1ec7c c\u1ea5u h\u00ecnh c\u00e1c menu ph\u1ea7n m\u1ec1m.<\/li>\n
  • T\u00ednh linh ho\u1ea1t:<\/strong>X\u00f3a v\u00e0 v\u1ebd l\u1ea1i ngay l\u1eadp t\u1ee9c m\u00e0 kh\u00f4ng c\u1ea7n qu\u1ea3n l\u00fd l\u1ecbch s\u1eed ho\u00e0n t\u00e1c.<\/li>\n
  • H\u1ee3p t\u00e1c:<\/strong>B\u1ea3ng tr\u1eafng ho\u1eb7c m\u1ed9t t\u1edd gi\u1ea5y l\u1edbn cho ph\u00e9p nhi\u1ec1u b\u00ean li\u00ean quan ch\u1ec9 v\u00e0o v\u00e0 ch\u1ec9nh s\u1eeda s\u01a1 \u0111\u1ed3 c\u00f9ng l\u00fac.<\/li>\n
  • T\u1eadp trung nh\u1eadn th\u1ee9c:<\/strong>B\u1ea1n t\u1eadp trung v\u00e0o chuy\u1ec3n \u0111\u1ed9ng d\u1eef li\u1ec7u thay v\u00ec ho\u00e0n thi\u1ec7n h\u00ecnh th\u1ee9c th\u1ecb gi\u00e1c.<\/li>\n<\/ul>\n

    Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1eb7c bi\u1ec7t hi\u1ec7u qu\u1ea3 trong c\u00e1c giai \u0111o\u1ea1n kh\u00e1m ph\u00e1 ban \u0111\u1ea7u c\u1ee7a ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. N\u00f3 gi\u00fap c\u00e1c nh\u00f3m th\u1ed1ng nh\u1ea5t v\u1ec1 y\u00eau c\u1ea7u tr\u01b0\u1edbc khi cam k\u1ebft v\u00e0o thi\u1ebft k\u1ebf k\u1ef9 thu\u1eadt.<\/p>\n

    \ud83d\udcd8 Hi\u1ec3u c\u00e1c th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i<\/h2>\n

    Tr\u01b0\u1edbc khi c\u1ea7m b\u00fat, b\u1ea1n ph\u1ea3i hi\u1ec3u c\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u. Nh\u1eefng k\u00fd hi\u1ec7u n\u00e0y \u0111\u1ea1i di\u1ec7n cho c\u00e1c kh\u1ed1i x\u00e2y d\u1ef1ng c\u01a1 b\u1ea3n c\u1ee7a b\u1ea5t k\u1ef3 m\u00f4 h\u00ecnh quy tr\u00ecnh n\u00e0o. D\u00f9 b\u1ea1n v\u1ebd tr\u00ean gi\u1ea5y hay tr\u00ean m\u00e0n h\u00ecnh, \u00fd ngh\u0129a v\u1eabn nh\u01b0 nhau.<\/p>\n

    1. C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i (Ngu\u1ed3n v\u00e0 \u0111\u00edch)<\/h3>\n

    C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i \u0111\u1ea1i di\u1ec7n cho con ng\u01b0\u1eddi, t\u1ed5 ch\u1ee9c ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n. Ch\u00fang l\u00e0 ranh gi\u1edbi c\u1ee7a m\u00f4 h\u00ecnh c\u1ee7a b\u1ea1n. B\u1ea1n n\u00ean ghi nh\u00e3n ch\u00fang r\u00f5 r\u00e0ng \u0111\u1ec3 ch\u1ec9 ra ai cung c\u1ea5p d\u1eef li\u1ec7u v\u00e0 ai nh\u1eadn \u0111\u1ea7u ra cu\u1ed1i c\u00f9ng.<\/p>\n

      \n
    • V\u00ed d\u1ee5:<\/strong> M\u1ed9t kh\u00e1ch h\u00e0ng, m\u1ed9t ng\u00e2n h\u00e0ng, m\u1ed9t d\u1ecbch v\u1ee5 th\u1eddi ti\u1ebft.<\/li>\n
    • Tr\u1ef1c quan:<\/strong> Th\u01b0\u1eddng l\u00e0 m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt ho\u1eb7c m\u1ed9t bi\u1ec3u t\u01b0\u1ee3ng \u0111\u01a1n gi\u1ea3n.<\/li>\n<\/ul>\n

      2. C\u00e1c qu\u00e1 tr\u00ecnh (S\u1ef1 bi\u1ebfn \u0111\u1ed5i)<\/h3>\n

      C\u00e1c qu\u00e1 tr\u00ecnh l\u00e0 nh\u1eefng h\u00e0nh \u0111\u1ed9ng thay \u0111\u1ed5i d\u1eef li\u1ec7u. Ch\u00fang nh\u1eadn \u0111\u1ea7u v\u00e0o, th\u1ef1c hi\u1ec7n c\u00f4ng vi\u1ec7c v\u00e0 t\u1ea1o ra \u0111\u1ea7u ra. M\u1ed7i qu\u00e1 tr\u00ecnh ph\u1ea3i c\u00f3 \u00edt nh\u1ea5t m\u1ed9t \u0111\u1ea7u v\u00e0o v\u00e0 m\u1ed9t \u0111\u1ea7u ra.<\/p>\n

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      • V\u00ed d\u1ee5:<\/strong> T\u00ednh t\u1ed5ng, X\u00e1c minh ng\u01b0\u1eddi d\u00f9ng, T\u1ea1o b\u00e1o c\u00e1o.<\/li>\n
      • Tr\u1ef1c quan:<\/strong> Th\u01b0\u1eddng l\u00e0 m\u1ed9t h\u00ecnh tr\u00f2n, h\u00ecnh ch\u1eef nh\u1eadt bo g\u00f3c ho\u1eb7c m\u1ed9t h\u1ed9p c\u00f3 nh\u00e3n.<\/li>\n<\/ul>\n

        3. Kho d\u1eef li\u1ec7u (B\u1ed9 nh\u1edb)<\/h3>\n

        C\u00e1c kho d\u1eef li\u1ec7u \u0111\u1ea1i di\u1ec7n cho n\u01a1i th\u00f4ng tin \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef \u0111\u1ec3 s\u1eed d\u1ee5ng sau n\u00e0y. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m c\u00e1c t\u1eadp tin v\u1eadt l\u00fd, c\u01a1 s\u1edf d\u1eef li\u1ec7u ho\u1eb7c th\u1eadm ch\u00ed l\u00e0 m\u1ed9t t\u1ee7 h\u1ed3 s\u01a1 v\u1eadt l\u00fd. N\u1ebfu d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u \u1edf \u0111\u00e2u \u0111\u00f3 v\u00e0 \u0111\u01b0\u1ee3c truy c\u1eadp sau n\u00e0y, th\u00ec n\u00f3 thu\u1ed9c v\u1ec1 m\u1ed9t kho d\u1eef li\u1ec7u.<\/p>\n

          \n
        • V\u00ed d\u1ee5:<\/strong>C\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00e1ch h\u00e0ng, Nh\u1eadt k\u00fd \u0111\u01a1n h\u00e0ng, Danh s\u00e1ch t\u1ed3n kho.<\/li>\n
        • H\u00ecnh \u1ea3nh:<\/strong>Th\u01b0\u1eddng l\u00e0 m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt h\u1edf ho\u1eb7c c\u00e1c \u0111\u01b0\u1eddng song song.<\/li>\n<\/ul>\n

          4. Lu\u1ed3ng d\u1eef li\u1ec7u (S\u1ef1 di chuy\u1ec3n)<\/h3>\n

          C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u th\u1ec3 hi\u1ec7n con \u0111\u01b0\u1eddng m\u00e0 th\u00f4ng tin \u0111i qua. M\u1ed7i m\u0169i t\u00ean ph\u1ea3i c\u00f3 nh\u00e3n m\u00f4 t\u1ea3 n\u1ed9i dung d\u1eef li\u1ec7u. Kh\u00f4ng bao gi\u1edd \u0111\u1ec3 m\u1ed9t m\u0169i t\u00ean kh\u00f4ng c\u00f3 nh\u00e3n.<\/p>\n

            \n
          • V\u00ed d\u1ee5:<\/strong>Th\u00f4ng tin \u0111\u0103ng nh\u1eadp, H\u00f3a \u0111\u01a1n, Truy v\u1ea5n t\u00ecm ki\u1ebfm.<\/li>\n
          • H\u00ecnh \u1ea3nh:<\/strong>M\u1ed9t m\u0169i t\u00ean h\u01b0\u1edbng k\u1ebft n\u1ed1i hai th\u00e0nh ph\u1ea7n.<\/li>\n<\/ul>\n

            \ud83d\udcca So s\u00e1nh c\u00e1c y\u1ebfu t\u1ed1 th\u1ee7 c\u00f4ng so v\u1edbi s\u1ed1 h\u00f3a<\/h2>\n\n\n\n\n\n\n\n\n\n
            Y\u1ebfu t\u1ed1<\/th>\nC\u00e1ch ti\u1ebfp c\u1eadn th\u1ee7 c\u00f4ng<\/th>\nC\u00e1ch ti\u1ebfp c\u1eadn s\u1ed1 h\u00f3a\/\u1ee9ng d\u1ee5ng c\u01a1 b\u1ea3n<\/th>\n<\/tr>\n<\/thead>\n
            T\u1ed1c \u0111\u1ed9 ph\u00e1c th\u1ea3o<\/td>\nR\u1ea5t nhanh<\/td>\nNhanh<\/td>\n<\/tr>\n
            Kh\u1ea3 n\u0103ng ch\u1ec9nh s\u1eeda<\/td>\nY\u00eau c\u1ea7u v\u1ebd l\u1ea1i ho\u1eb7c x\u00f3a<\/td>\nK\u00e9o v\u00e0 th\u1ea3<\/td>\n<\/tr>\n
            T\u00ednh nh\u1ea5t qu\u00e1n<\/td>\nKh\u00e1c nhau t\u00f9y theo tay<\/td>\nC\u00e1c h\u00ecnh d\u1ea1ng chu\u1ea9n h\u00f3a<\/td>\n<\/tr>\n
            T\u00ednh di \u0111\u1ed9ng<\/td>\nY\u00eau c\u1ea7u qu\u00e9t ho\u1eb7c ch\u1ee5p \u1ea3nh<\/td>\nChia s\u1ebb t\u1ec7p t\u1ee9c th\u00ec<\/td>\n<\/tr>\n
            Chi ph\u00ed<\/td>\nT\u1ed1i thi\u1ec3u (Gi\u1ea5y v\u00e0 b\u00fat)<\/td>\nMi\u1ec5n ph\u00ed ho\u1eb7c chi ph\u00ed th\u1ea5p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            \ud83c\udf0d Ba c\u1ea5p \u0111\u1ed9 c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD)<\/h2>\n

            M\u1ed9t m\u00f4 h\u00ecnh DFD ho\u00e0n ch\u1ec9nh kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t b\u1ea3n v\u1ebd duy nh\u1ea5t. \u0110\u00f3 l\u00e0 m\u1ed9t c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p c\u1ee7a c\u00e1c s\u01a1 \u0111\u1ed3, cho ph\u00e9p ph\u00f3ng to v\u00e0 thu nh\u1ecf v\u00e0o h\u1ec7 th\u1ed1ng. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c c\u1ea5p \u0111\u1ed9 n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 duy tr\u00ec s\u1ef1 r\u00f5 r\u00e0ng.<\/p>\n

            M\u1ee9c 0: S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh<\/h3>\n

            \u0110\u00e2y l\u00e0 g\u00f3c nh\u00ecn c\u1ea5p cao. N\u00f3 th\u1ec3 hi\u1ec7n to\u00e0n b\u1ed9 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. N\u00f3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi: \u201cBi\u00ean gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng l\u00e0 g\u00ec?\u201d<\/p>\n

              \n
            • Tr\u1ecdng t\u00e2m:<\/strong>T\u01b0\u01a1ng t\u00e1c v\u1edbi th\u1ebf gi\u1edbi b\u00ean ngo\u00e0i.<\/li>\n
            • Chi ti\u1ebft:<\/strong>T\u1ed1i thi\u1ec3u. M\u1ed9t bong b\u00f3ng qu\u00e1 tr\u00ecnh, nhi\u1ec1u th\u1ef1c th\u1ec3.<\/li>\n<\/ul>\n

              M\u1ee9c 1: Ph\u00e2n r\u00e3 ch\u1ee9c n\u0103ng<\/h3>\n

              S\u01a1 \u0111\u1ed3 n\u00e0y chia qu\u00e1 tr\u00ecnh duy nh\u1ea5t t\u1eeb m\u1ee9c 0 th\u00e0nh c\u00e1c qu\u00e1 tr\u00ecnh con ch\u00ednh. N\u00f3 th\u1ec3 hi\u1ec7n c\u00e1c ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c kho d\u1eef li\u1ec7u li\u00ean quan.<\/p>\n

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              • Tr\u1ecdng t\u00e2m:<\/strong>C\u00e1c khu v\u1ef1c ch\u1ee9c n\u0103ng ch\u00ednh.<\/li>\n
              • Chi ti\u1ebft:<\/strong>T\u1eeb 5 \u0111\u1ebfn 9 qu\u00e1 tr\u00ecnh l\u00e0 m\u1ed9t quy t\u1eafc ph\u1ed5 bi\u1ebfn.<\/li>\n<\/ul>\n

                M\u1ee9c 2: Ph\u00e2n t\u00edch chi ti\u1ebft<\/h3>\n

                M\u1ee9c \u0111\u1ed9 n\u00e0y ph\u00f3ng to v\u00e0o c\u00e1c qu\u00e1 tr\u00ecnh ph\u1ee9c t\u1ea1p c\u1ee5 th\u1ec3 t\u1eeb m\u1ee9c 1. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi m\u1ed9t ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3 qu\u00e1 ph\u1ee9c t\u1ea1p \u0111\u1ec3 hi\u1ec3u \u1edf c\u1ea5p \u0111\u1ed9 cao.<\/p>\n

                  \n
                • Tr\u1ecdng t\u00e2m:<\/strong>C\u00e1c thu\u1eadt to\u00e1n ho\u1eb7c lu\u1ed3ng c\u00f4ng vi\u1ec7c c\u1ee5 th\u1ec3.<\/li>\n
                • Chi ti\u1ebft:<\/strong>Chi ti\u1ebft cao.<\/li>\n<\/ul>\n

                  \u270d\ufe0f B\u01b0\u1edbc t\u1eebng b\u01b0\u1edbc: V\u1ebd b\u1eb1ng tay<\/h2>\n

                  Vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 b\u1eb1ng tay \u0111\u00f2i h\u1ecfi m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p c\u00f3 h\u1ec7 th\u1ed1ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng h\u1ee3p l\u00fd v\u00e0 d\u1ec5 \u0111\u1ecdc. H\u00e3y tu\u00e2n theo c\u00e1c b\u01b0\u1edbc sau \u0111\u1ec3 h\u01b0\u1edbng d\u1eabn qu\u00e1 tr\u00ecnh t\u1ea1o h\u00ecnh v\u1eadt l\u00fd c\u1ee7a b\u1ea1n.<\/p>\n

                  B\u01b0\u1edbc 1: Chu\u1ea9n b\u1ecb<\/h3>\n
                    \n
                  • Thu th\u1eadp c\u00e1c t\u1edd gi\u1ea5y l\u1edbn ho\u1eb7c m\u1ed9t b\u1ea3ng tr\u1eafng l\u1edbn.<\/li>\n
                  • S\u1eed d\u1ee5ng c\u00e1c c\u00e2y b\u00fat m\u00e0u kh\u00e1c nhau \u0111\u1ec3 ph\u00e2n bi\u1ec7t c\u00e1c lo\u1ea1i th\u00e0nh ph\u1ea7n (v\u00ed d\u1ee5: m\u00e0u xanh cho qu\u00e1 tr\u00ecnh, m\u00e0u \u0111\u1ecf cho th\u1ef1c th\u1ec3).<\/li>\n
                  • D\u1ef1 tr\u1eef th\u01b0\u1edbc k\u1ebb \u0111\u1ec3 v\u1ebd c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng, m\u1eb7c d\u00f9 v\u1ebd tay t\u1ef1 do c\u0169ng \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn cho c\u00e1c b\u1ea3n ph\u00e1c th\u1ea3o ban \u0111\u1ea7u.<\/li>\n<\/ul>\n

                    B\u01b0\u1edbc 2: X\u00e1c \u0111\u1ecbnh bi\u00ean gi\u1edbi<\/h3>\n
                      \n
                    • V\u1ebd m\u1ed9t h\u00ecnh h\u1ed9p ho\u1eb7c h\u00ecnh tr\u00f2n \u0111\u1ec3 \u0111\u1ea1i di\u1ec7n cho bi\u00ean gi\u1edbi h\u1ec7 th\u1ed1ng.<\/li>\n
                    • \u0110\u1eb7t t\u1ea5t c\u1ea3 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i \u1edf ph\u00eda ngo\u00e0i bi\u00ean gi\u1edbi n\u00e0y.<\/li>\n
                    • \u0110\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 lu\u1ed3ng d\u1eef li\u1ec7u n\u00e0o v\u01b0\u1ee3t qua bi\u00ean gi\u1edbi m\u00e0 kh\u00f4ng c\u00f3 qu\u00e1 tr\u00ecnh \u1edf gi\u1eefa.<\/li>\n<\/ul>\n

                      B\u01b0\u1edbc 3: B\u1ea3n \u0111\u1ed3 h\u00f3a \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra<\/h3>\n
                        \n
                      • B\u1eaft \u0111\u1ea7u v\u1edbi s\u1ef1 ki\u1ec7n ch\u00ednh. \u0110i\u1ec1u g\u00ec kh\u1edfi \u0111\u1ed9ng h\u1ec7 th\u1ed1ng?<\/li>\n
                      • V\u1ebd c\u00e1c m\u0169i t\u00ean t\u1eeb c\u00e1c th\u1ef1c th\u1ec3 \u0111\u1ebfn h\u1ec7 th\u1ed1ng.<\/li>\n
                      • V\u1ebd c\u00e1c m\u0169i t\u00ean t\u1eeb h\u1ec7 th\u1ed1ng quay tr\u1edf l\u1ea1i c\u00e1c th\u1ef1c th\u1ec3.<\/li>\n
                      • Ghi nh\u00e3n r\u00f5 r\u00e0ng cho m\u1ecdi m\u0169i t\u00ean.<\/li>\n<\/ul>\n

                        B\u01b0\u1edbc 4: Ph\u00e2n t\u00edch quy tr\u00ecnh<\/h3>\n
                          \n
                        • Chia nh\u1ecf quy tr\u00ecnh ch\u00ednh th\u00e0nh c\u00e1c quy tr\u00ecnh con.<\/li>\n
                        • K\u1ebft n\u1ed1i ch\u00fang b\u1eb1ng c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u.<\/li>\n
                        • Th\u00eam c\u00e1c kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u \u1edf n\u01a1i th\u00f4ng tin \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef.<\/li>\n
                        • \u0110\u1ea3m b\u1ea3o m\u1ecdi quy tr\u00ecnh \u0111\u1ec1u c\u00f3 d\u1eef li\u1ec7u \u0111i v\u00e0o v\u00e0 \u0111i ra.<\/li>\n<\/ul>\n

                          B\u01b0\u1edbc 5: Xem x\u00e9t v\u00e0 c\u00e2n b\u1eb1ng<\/h3>\n
                            \n
                          • Ki\u1ec3m tra xem c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u \u0111i v\u00e0o m\u1ed9t quy tr\u00ecnh c\u00f3 kh\u1edbp v\u1edbi \u0111\u1ea7u ra hay kh\u00f4ng.<\/li>\n
                          • X\u00e1c minh r\u1eb1ng kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u n\u00e0o bi\u1ebfn m\u1ea5t m\u00e0 kh\u00f4ng c\u00f3 \u0111i\u1ec3m \u0111\u1ebfn.<\/li>\n
                          • \u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i \u0111\u1ec1u \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i.<\/li>\n<\/ul>\n

                            \ud83d\udcbb V\u1ebd trong m\u00f4i tr\u01b0\u1eddng s\u1ed1 \u0111\u01a1n gi\u1ea3n<\/h2>\n

                            M\u1eb7c d\u00f9 c\u00f3 t\u1ed3n t\u1ea1i c\u00e1c c\u00f4ng c\u1ee5 chuy\u00ean d\u1ee5ng, b\u1ea1n kh\u00f4ng c\u1ea7n ch\u00fang. C\u00e1c m\u00f4i tr\u01b0\u1eddng s\u1ed1 c\u01a1 b\u1ea3n c\u00f3 th\u1ec3 mang l\u1ea1i nh\u1eefng l\u1ee3i \u00edch t\u01b0\u01a1ng t\u1ef1 m\u00e0 kh\u00f4ng c\u1ea7n s\u1ef1 ph\u1ee9c t\u1ea1p. Nh\u1eefng c\u00f4ng c\u1ee5 n\u00e0y bao g\u1ed3m c\u00e1c \u1ee9ng d\u1ee5ng v\u1ebd \u0111\u01a1n gi\u1ea3n, ph\u1ea7n m\u1ec1m tr\u00ecnh chi\u1ebfu ho\u1eb7c th\u1eadm ch\u00ed l\u00e0 m\u1ed9t t\u00e0i li\u1ec7u tr\u1ed1ng.<\/p>\n

                            Khi s\u1eed d\u1ee5ng giao di\u1ec7n s\u1ed1, h\u00e3y tu\u00e2n theo nh\u1eefng nguy\u00ean t\u1eafc n\u00e0y \u0111\u1ec3 duy tr\u00ec tinh th\u1ea7n \u201ckh\u00f4ng c\u1ea7n c\u00f4ng c\u1ee5\u201d:<\/p>\n

                              \n
                            • Duy tr\u00ec c\u00e1c h\u00ecnh d\u1ea1ng c\u01a1 b\u1ea3n:<\/strong>Tr\u00e1nh s\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng 3D ho\u1eb7c \u0111\u1ed9 d\u1ed1c. Ch\u00fang t\u1ea1o ra ti\u1ebfng \u1ed3n.<\/li>\n
                            • S\u1eed d\u1ee5ng l\u01b0\u1edbi m\u1ed9t c\u00e1ch ti\u1ebft ch\u1ebf:<\/strong>L\u01b0\u1edbi gi\u00fap c\u0103n ch\u1ec9nh nh\u01b0ng kh\u00f4ng \u0111\u1ecbnh \u0111o\u1ea1t thi\u1ebft k\u1ebf.<\/li>\n
                            • T\u1eadp trung v\u00e0o k\u1ebft n\u1ed1i:<\/strong>\u0110\u1ea3m b\u1ea3o c\u00e1c \u0111\u01b0\u1eddng c\u1ee7a b\u1ea1n g\u00e0i v\u00e0o ho\u1eb7c k\u1ebft n\u1ed1i m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd, gi\u1ed1ng nh\u01b0 tr\u00ean gi\u1ea5y.<\/li>\n
                            • Ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n:<\/strong>L\u01b0u c\u00f4ng vi\u1ec7c th\u01b0\u1eddng xuy\u00ean. N\u1ebfu b\u1ea1n m\u1ea5t m\u1ed9t t\u1ec7p, b\u1ea1n s\u1ebd m\u1ea5t ti\u1ebfn \u0111\u1ed9.<\/li>\n<\/ul>\n

                              \ud83d\udea7 Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh<\/h2>\n

                              Ngay c\u1ea3 v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n, l\u1ed7i v\u1eabn c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n trong s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n. Nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn n\u00e0y s\u1ebd gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m th\u1eddi gian trong giai \u0111o\u1ea1n x\u00e1c minh.<\/p>\n

                                \n
                              • H\u1ed1 \u0111en:<\/strong>M\u1ed9t quy tr\u00ecnh c\u00f3 \u0111\u1ea7u v\u00e0o nh\u01b0ng kh\u00f4ng c\u00f3 \u0111\u1ea7u ra. D\u1eef li\u1ec7u kh\u00f4ng th\u1ec3 t\u1ef1 bi\u1ebfn m\u1ea5t.<\/li>\n
                              • C\u00e1c quy tr\u00ecnh k\u1ef3 di\u1ec7u:<\/strong>M\u1ed9t quy tr\u00ecnh t\u1ea1o ra d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch k\u1ef3 di\u1ec7u m\u00e0 kh\u00f4ng c\u00f3 \u0111\u1ea7u v\u00e0o n\u00e0o. M\u1ecdi d\u1eef li\u1ec7u \u0111\u1ec1u ph\u1ea3i \u0111\u1ebfn t\u1eeb \u0111\u00e2u \u0111\u00f3.<\/li>\n
                              • D\u00f2ng ch\u1ea3y kh\u00f4ng \u0111\u01b0\u1ee3c g\u00e1n nh\u00e3n:<\/strong> M\u1ed9t m\u0169i t\u00ean kh\u00f4ng c\u00f3 t\u00ean l\u00e0 v\u00f4 d\u1ee5ng. N\u00f3 kh\u00f4ng cho b\u1ea1n bi\u1ebft th\u00f4ng tin n\u00e0o \u0111ang di chuy\u1ec3n.<\/li>\n
                              • D\u00f2ng ch\u1ea3y tr\u1ef1c ti\u1ebfp gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3:<\/strong> D\u1eef li\u1ec7u kh\u00f4ng th\u1ec3 ch\u1ea3y tr\u1ef1c ti\u1ebfp gi\u1eefa hai th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i m\u00e0 kh\u00f4ng \u0111i qua h\u1ec7 th\u1ed1ng.<\/li>\n
                              • S\u1ef1 nh\u1ea7m l\u1eabn v\u1ec1 kho d\u1eef li\u1ec7u:<\/strong> \u0110\u1ea3m b\u1ea3o c\u00e1c kho d\u1eef li\u1ec7u kh\u00e1c bi\u1ec7t v\u1edbi c\u00e1c qu\u00e1 tr\u00ecnh. M\u1ed9t kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u; m\u1ed9t qu\u00e1 tr\u00ecnh thay \u0111\u1ed5i n\u00f3.<\/li>\n<\/ul>\n

                                \ud83d\udd0d C\u00e1c k\u1ef9 thu\u1eadt x\u00e1c minh cho s\u01a1 \u0111\u1ed3 th\u1ee7 c\u00f4ng<\/h2>\n

                                M\u1ed9t khi s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n \u0111\u00e3 \u0111\u01b0\u1ee3c v\u1ebd xong, b\u1ea1n ph\u1ea3i x\u00e1c minh t\u00ednh ch\u00ednh x\u00e1c c\u1ee7a n\u00f3. C\u00e1c s\u01a1 \u0111\u1ed3 th\u1ee7 c\u00f4ng d\u1ec5 \u0111\u00e1nh gi\u00e1 h\u01a1n v\u1ec1 m\u1eb7t v\u1eadt l\u00fd v\u00ec b\u1ea1n c\u00f3 th\u1ec3 ch\u1ec9 tr\u1ef1c ti\u1ebfp v\u00e0o c\u00e1c th\u00e0nh ph\u1ea7n.<\/p>\n

                                1. Ph\u01b0\u01a1ng ph\u00e1p \u0111i d\u1ea1o qua s\u01a1 \u0111\u1ed3<\/h3>\n

                                \u0110i d\u1ea1o qua s\u01a1 \u0111\u1ed3 c\u00f9ng m\u1ed9t b\u00ean li\u00ean quan. Y\u00eau c\u1ea7u h\u1ecd theo d\u00f5i m\u1ed9t ph\u1ea7n d\u1eef li\u1ec7u c\u1ee5 th\u1ec3 t\u1eeb \u0111\u1ea7u v\u00e0o \u0111\u1ebfn \u0111\u1ea7u ra. N\u1ebfu h\u1ecd b\u1ecb m\u1eafc k\u1eb9t \u1edf m\u1ed9t m\u0169i t\u00ean ho\u1eb7c m\u1ed9t qu\u00e1 tr\u00ecnh, khu v\u1ef1c \u0111\u00f3 c\u1ea7n \u0111\u01b0\u1ee3c l\u00e0m r\u00f5.<\/p>\n

                                2. Ki\u1ec3m tra c\u00e2n b\u1eb1ng<\/h3>\n

                                So s\u00e1nh M\u1ee9c 0 v\u00e0 M\u1ee9c 1. C\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra tr\u00ean s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh ph\u1ea3i kh\u1edbp v\u1edbi c\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a s\u01a1 \u0111\u1ed3 M\u1ee9c 1. N\u1ebfu s\u01a1 \u0111\u1ed3 M\u1ee9c 1 gi\u1edbi thi\u1ec7u m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u m\u1edbi \u0111\u1ebfn m\u1ed9t th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i m\u00e0 kh\u00f4ng c\u00f3 trong M\u1ee9c 0, b\u1ea1n \u0111\u00e3 m\u1eafc sai l\u1ea7m.<\/p>\n

                                3. Xem x\u00e9t quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean<\/h3>\n
                                  \n
                                • \u0110\u1ea3m b\u1ea3o t\u00ean qu\u00e1 tr\u00ecnh l\u00e0 \u0111\u1ed9ng t\u1eeb. (v\u00ed d\u1ee5: \u201cX\u1eed l\u00fd \u0111\u01a1n h\u00e0ng\u201d, kh\u00f4ng ph\u1ea3i \u201cX\u1eed l\u00fd \u0111\u01a1n h\u00e0ng\u201d).<\/li>\n
                                • \u0110\u1ea3m b\u1ea3o t\u00ean lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 danh t\u1eeb. (v\u00ed d\u1ee5: \u201cChi ti\u1ebft \u0111\u01a1n h\u00e0ng\u201d, kh\u00f4ng ph\u1ea3i \u201cG\u1eedi \u0111\u01a1n h\u00e0ng\u201d).<\/li>\n
                                • \u0110\u1ea3m b\u1ea3o t\u00ean th\u1ef1c th\u1ec3 \u0111\u01b0\u1ee3c d\u00f9ng \u1edf d\u1ea1ng s\u1ed1 nhi\u1ec1u ho\u1eb7c s\u1ed1 \u00edt m\u1ed9t c\u00e1ch nh\u1ea5t qu\u00e1n.<\/li>\n<\/ul>\n

                                  \ud83d\udee0\ufe0f Khi n\u00e0o n\u00ean chuy\u1ec3n sang s\u1ed1 h\u00f3a<\/h2>\n

                                  C\u00e1c s\u01a1 \u0111\u1ed3 th\u1ee7 c\u00f4ng r\u1ea5t t\u1ed1t cho vi\u1ec7c kh\u00e1m ph\u00e1 v\u00e0 l\u1eadp k\u1ebf ho\u1ea1ch. Tuy nhi\u00ean, s\u1ebd \u0111\u1ebfn m\u1ed9t l\u00fac m\u00e0 l\u01b0u tr\u1eef s\u1ed1 h\u00f3a tr\u1edf n\u00ean c\u1ea7n thi\u1ebft. B\u1ea1n n\u00ean c\u00e2n nh\u1eafc s\u1ed1 h\u00f3a c\u00f4ng vi\u1ec7c c\u1ee7a m\u00ecnh khi:<\/p>\n

                                    \n
                                  • M\u00f4 h\u00ecnh ph\u00e1t tri\u1ec3n:<\/strong> S\u01a1 \u0111\u1ed3 tr\u1edf n\u00ean qu\u00e1 l\u1edbn \u0111\u1ec3 v\u1eeba tr\u00ean m\u1ed9t t\u1edd gi\u1ea5y.<\/li>\n
                                  • C\u00e1c thay \u0111\u1ed5i di\u1ec5n ra th\u01b0\u1eddng xuy\u00ean:<\/strong> N\u1ebfu y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng thay \u0111\u1ed5i th\u01b0\u1eddng xuy\u00ean, m\u1ed9t t\u1ec7p s\u1ed1 h\u00f3a d\u1ec5 c\u1eadp nh\u1eadt h\u01a1n so v\u1edbi vi\u1ec7c v\u1ebd l\u1ea1i tr\u00ean gi\u1ea5y.<\/li>\n
                                  • Vi\u1ec7c chia s\u1ebb l\u00e0 c\u1ea7n thi\u1ebft:<\/strong> G\u1eedi \u1ea3nh c\u1ee7a m\u1ed9t s\u01a1 \u0111\u1ed3 gi\u1ea5y c\u00f3 th\u1ec3 b\u1ecb m\u1edd. M\u1ed9t t\u1ec7p s\u1ed1 h\u00f3a \u0111\u1ea3m b\u1ea3o m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u th\u1ea5y c\u00f9ng \u0111\u1ed9 ph\u00e2n gi\u1ea3i.<\/li>\n
                                  • C\u1ea7n t\u00edch h\u1ee3p:<\/strong> N\u1ebfu b\u1ea1n c\u1ea7n li\u00ean k\u1ebft s\u01a1 \u0111\u1ed3 v\u1edbi m\u00e3 ngu\u1ed3n ho\u1eb7c s\u01a1 \u0111\u1ed3 c\u01a1 s\u1edf d\u1eef li\u1ec7u, c\u00e1c t\u1ec7p s\u1ed1 h\u00f3a s\u1ebd t\u01b0\u01a1ng th\u00edch h\u01a1n.<\/li>\n<\/ul>\n

                                    \ud83d\udcdd C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u00f5 r\u00e0ng<\/h2>\n

                                    D\u00f9 b\u1eb1ng b\u1ea5t k\u1ef3 ph\u01b0\u01a1ng ti\u1ec7n n\u00e0o, s\u1ef1 r\u00f5 r\u00e0ng l\u00e0 m\u1ee5c ti\u00eau c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u. M\u1ed9t s\u01a1 \u0111\u1ed3 g\u00e2y nh\u1ea7m l\u1eabn c\u00f2n t\u1ec7 h\u01a1n c\u1ea3 kh\u00f4ng c\u00f3 s\u01a1 \u0111\u1ed3 n\u00e0o.<\/p>\n

                                      \n
                                    • Gi\u1eef cho n\u00f3 ph\u1eb3ng:<\/strong> Tr\u00e1nh c\u00e1c \u0111\u01b0\u1eddng ch\u00e9o nhau. N\u1ebfu c\u00e1c \u0111\u01b0\u1eddng ph\u1ea3i ch\u00e9o nhau, h\u00e3y d\u00f9ng k\u00fd hi\u1ec7u \u201cnh\u1ea3y\u201d ho\u1eb7c s\u1eafp x\u1ebfp l\u1ea1i b\u1ed1 c\u1ee5c.<\/li>\n
                                    • Nh\u00f3m c\u00e1c quy tr\u00ecnh li\u00ean quan:<\/strong>\u0110\u1eb7t c\u00e1c quy tr\u00ecnh t\u01b0\u01a1ng t\u00e1c th\u01b0\u1eddng xuy\u00ean g\u1ea7n nhau.<\/li>\n
                                    • S\u1eed d\u1ee5ng kho\u1ea3ng c\u00e1ch nh\u1ea5t qu\u00e1n:<\/strong>Duy tr\u00ec kho\u1ea3ng c\u00e1ch b\u1eb1ng nhau gi\u1eefa c\u00e1c h\u00ecnh \u0111\u1ec3 t\u1ea1o c\u1ea3m gi\u00e1c tr\u1eadt t\u1ef1.<\/li>\n
                                    • H\u1ea1n ch\u1ebf s\u1ed1 l\u01b0\u1ee3ng quy tr\u00ecnh:<\/strong>M\u1ed9t s\u01a1 \u0111\u1ed3 duy nh\u1ea5t kh\u00f4ng n\u00ean c\u00f3 nhi\u1ec1u h\u01a1n 7 \u0111\u1ebfn 9 quy tr\u00ecnh. N\u1ebfu c\u00f3, h\u00e3y chia n\u00f3 th\u00e0nh c\u00e1c s\u01a1 \u0111\u1ed3 con.<\/li>\n
                                    • Nh\u00e3n c\u00e1c kho d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng:<\/strong>S\u1eed d\u1ee5ng quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean chu\u1ea9n nh\u01b0 \u201cCustomer_Table\u201d ho\u1eb7c \u201cOrder_Log\u201d.<\/li>\n<\/ul>\n

                                      \ud83e\udde9 L\u1ee3i \u00edch nh\u1eadn th\u1ee9c c\u1ee7a thi\u1ebft k\u1ebf th\u1ee7 c\u00f4ng<\/h2>\n

                                      Vi\u1ec7c v\u1ebd s\u01a1 \u0111\u1ed3 b\u1eb1ng tay mang l\u1ea1i l\u1ee3i th\u1ebf t\u00e2m l\u00fd. N\u00f3 k\u00edch ho\u1ea1t b\u1ed9 n\u00e3o theo c\u00e1ch kh\u00e1c bi\u1ec7t so v\u1edbi vi\u1ec7c nh\u1ea5p chu\u1ed9t v\u00e0 k\u00e9o th\u1ea3 c\u00e1c h\u00ecnh. S\u1ef1 tham gia n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 hi\u1ec3u bi\u1ebft s\u00e2u s\u1eafc h\u01a1n.<\/p>\n

                                      Khi b\u1ea1n v\u1ebd, b\u1ea1n ch\u1eadm l\u1ea1i. B\u1ea1n suy ngh\u0129 v\u1ec1 m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa hai \u0111i\u1ec3m tr\u01b0\u1edbc khi \u0111\u01b0\u1eddng n\u1ed1i xu\u1ea5t hi\u1ec7n. Kho\u1ea3ng d\u1eebng n\u00e0y gi\u00fap b\u1ea1n ph\u00e1t hi\u1ec7n c\u00e1c l\u1ed7i logic c\u00f3 th\u1ec3 b\u1ecb b\u1ecf s\u00f3t khi d\u00f9ng c\u00f4ng c\u1ee5 khi\u1ebfn vi\u1ec7c v\u1ebd tr\u1edf n\u00ean d\u1ec5 d\u00e0ng. S\u1ef1 c\u1ea3n tr\u1edf khi v\u1ebd th\u1ee7 c\u00f4ng th\u1ef1c ra l\u00e0 m\u1ed9t t\u00ednh n\u0103ng, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u1ed7i.<\/p>\n

                                        \n
                                      • Gi\u1eef nh\u1edb:<\/strong>C\u00e1c nghi\u00ean c\u1ee9u cho th\u1ea5y vi\u1ec7c ghi ch\u00e9p th\u00f4ng tin b\u1eb1ng tay c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ghi nh\u1edb h\u01a1n so v\u1edbi g\u00f5 ph\u00edm.<\/li>\n
                                      • Gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1:<\/strong>H\u00e0nh \u0111\u1ed9ng v\u1eadt l\u00fd c\u1ee7a ph\u00e1c th\u1ea3o c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3i quy\u1ebft nh\u1eefng n\u00fat logic ph\u1ee9c t\u1ea1p.<\/li>\n
                                      • T\u1eadp trung:<\/strong>Kh\u00f4ng b\u1ecb ph\u00e2n t\u00e2m b\u1edfi c\u00e1c menu ph\u1ea7n m\u1ec1m, t\u00e2m tr\u00ed s\u1ebd t\u1eadp trung v\u00e0o v\u1ea5n \u0111\u1ec1.<\/li>\n<\/ul>\n

                                        \ud83d\udd17 T\u00edch h\u1ee3p v\u1edbi y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng<\/h2>\n

                                        S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t s\u1ea3n ph\u1ea9m t\u00e1ch bi\u1ec7t. N\u00f3 ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng. S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 th\u1ee7 c\u00f4ng c\u1ee7a b\u1ea1n \u0111\u1ec3 x\u00e1c minh t\u00e0i li\u1ec7u y\u00eau c\u1ea7u.<\/p>\n

                                          \n
                                        • M\u1ed7i y\u00eau c\u1ea7u c\u00f3 m\u1ed9t quy tr\u00ecnh t\u01b0\u01a1ng \u1ee9ng kh\u00f4ng?<\/li>\n
                                        • M\u1ed7i \u0111\u1ea7u v\u00e0o d\u1eef li\u1ec7u c\u00f3 \u0111\u00edch \u0111\u1ebfn \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh kh\u00f4ng?<\/li>\n
                                        • T\u1ea5t c\u1ea3 c\u00e1c r\u00e0ng bu\u1ed9c c\u00f3 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n trong lu\u1ed3ng d\u1eef li\u1ec7u kh\u00f4ng?<\/li>\n<\/ul>\n

                                          N\u1ebfu b\u1ea1n ph\u00e1t hi\u1ec7n m\u1ed9t y\u00eau c\u1ea7u kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c \u00e1nh x\u1ea1 v\u00e0o s\u01a1 \u0111\u1ed3, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 cho th\u1ea5y m\u1ed9t quy tr\u00ecnh b\u1ecb thi\u1ebfu ho\u1eb7c hi\u1ec3u nh\u1ea7m v\u1ec1 ph\u1ea1m vi h\u1ec7 th\u1ed1ng. \u0110i\u1ec1u n\u00e0y khi\u1ebfn DFD th\u1ee7 c\u00f4ng tr\u1edf th\u00e0nh c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd \u0111\u1ec3 x\u00e1c minh y\u00eau c\u1ea7u.<\/p>\n

                                          \ud83c\udfaf Nh\u1eefng suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 vi\u1ec7c v\u1ebd s\u01a1 \u0111\u1ed3<\/h2>\n

                                          M\u1ee5c ti\u00eau c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 giao ti\u1ebfp. \u0110\u00f3 l\u00e0 m\u1ed9t ng\u00f4n ng\u1eef d\u00f9ng \u0111\u1ec3 m\u00f4 t\u1ea3 c\u00e1ch m\u1ed9t h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng. D\u00f9 b\u1ea1n d\u00f9ng n\u1ec1n t\u1ea3ng c\u00f4ng ngh\u1ec7 cao hay ch\u1ec9 m\u1ed9t c\u00e2y b\u00fat ch\u00ec \u0111\u01a1n gi\u1ea3n, ch\u1ea5t l\u01b0\u1ee3ng giao ti\u1ebfp ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 hi\u1ec3u bi\u1ebft c\u1ee7a b\u1ea1n v\u1ec1 logic.<\/p>\n

                                          B\u1eb1ng c\u00e1ch n\u1eafm v\u1eefng c\u00e1c nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n c\u1ee7a vi\u1ec7c v\u1ebd s\u01a1 \u0111\u1ed3 th\u1ee7 c\u00f4ng, b\u1ea1n x\u00e2y d\u1ef1ng n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc, gi\u00fap b\u1ea1n hi\u1ec7u qu\u1ea3 ngay c\u1ea3 khi sau n\u00e0y s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m n\u00e2ng cao. C\u00f4ng c\u1ee5 thay \u0111\u1ed5i, nh\u01b0ng logic lu\u1ed3ng d\u1eef li\u1ec7u v\u1eabn lu\u00f4n \u1ed5n \u0111\u1ecbnh. B\u1eaft \u0111\u1ea7u \u0111\u01a1n gi\u1ea3n. T\u1eadp trung v\u00e0o lu\u1ed3ng. \u0110\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y d\u1eabn \u0111\u1ebfn c\u00e1c thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng v\u1eefng ch\u1eafc.<\/p>\n","protected":false},"excerpt":{"rendered":"

                                          Vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) kh\u00f4ng \u0111\u00f2i h\u1ecfi gi\u1ea5y ph\u00e9p ph\u1ea7n m\u1ec1m \u0111\u1eaft ti\u1ec1n hay giao di\u1ec7n ph\u1ee9c t\u1ea1p. Th\u1eadt ra, b\u1eaft \u0111\u1ea7u b\u1eb1ng nh\u1eefng c\u00f4ng c\u1ee5 \u0111\u01a1n gi\u1ea3n th\u01b0\u1eddng mang l\u1ea1i k\u1ebft qu\u1ea3 r\u00f5 r\u00e0ng nh\u1ea5t. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u00e1ch thi\u1ebft k\u1ebf c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ch\u00ednh x\u00e1c b\u1eb1ng gi\u1ea5y, b\u1ea3ng tr\u1eafng ho\u1eb7c c\u00e1c tr\u00ecnh ch\u1ec9nh s\u1eeda k\u1ef9 thu\u1eadt s\u1ed1 c\u01a1 b\u1ea3n. B\u1eb1ng c\u00e1ch t\u1eadp trung v\u00e0o c\u1ea5u tr\u00fac v\u00e0 logic thay v\u00ec th\u1ea9m m\u1ef9, b\u1ea1n c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh h\u1ec7 th\u1ed1ng v\u1eefng ch\u1eafc, v\u01b0\u1ee3t qua th\u1eed th\u00e1ch c\u1ee7a th\u1eddi gian. \ud83e\udde0 T\u1ea1i sao b\u1eaft \u0111\u1ea7u m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea7n m\u1ec1m chuy\u00ean d\u1ee5ng? Nhi\u1ec1u chuy\u00ean gia nh\u1ea3y th\u1eb3ng v\u00e0o c\u00e1c c\u00f4ng c\u1ee5 k\u1ef9 thu\u1eadt s\u1ed1, ch\u1ec9 \u0111\u1ec3 b\u1ecb l\u1ea1c trong c\u00e1c t\u00f9y ch\u1ecdn \u0111\u1ecbnh d\u1ea1ng. V\u1ebd tay bu\u1ed9c b\u1ea1n ph\u1ea3i t\u1eadp trung v\u00e0o logic c\u1ed1t l\u00f5i c\u1ee7a h\u1ec7 th\u1ed1ng. Khi b\u1ea1n d\u00f9ng b\u00fat ho\u1eb7c b\u00fat d\u1ea1 c\u01a1 b\u1ea3n, b\u1ea1n b\u1ecb gi\u1edbi h\u1ea1n \u1edf nh\u1eefng y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu. R\u00e0o c\u1ea3n n\u00e0y th\u1ef1c ra l\u1ea1i l\u00e0 m\u1ed9t l\u1ee3i th\u1ebf. N\u00f3 ng\u0103n b\u1ea1n m\u1ea5t h\u00e0ng gi\u1edd \u0111\u1ec3 ho\u00e0n thi\u1ec7n m\u00e0u s\u1eafc hay h\u00ecnh d\u1ea1ng tr\u01b0\u1edbc khi logic \u0111\u00e3 v\u1eefng ch\u1eafc. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng l\u1ee3i th\u1ebf ch\u00ednh c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p th\u1ee7 c\u00f4ng: T\u1ed1c \u0111\u1ed9:V\u1ebd ph\u00e1c th\u1ea3o nhanh h\u01a1n vi\u1ec7c c\u1ea5u h\u00ecnh c\u00e1c menu ph\u1ea7n m\u1ec1m. T\u00ednh linh ho\u1ea1t:X\u00f3a v\u00e0 v\u1ebd l\u1ea1i ngay l\u1eadp t\u1ee9c m\u00e0 kh\u00f4ng c\u1ea7n qu\u1ea3n l\u00fd l\u1ecbch s\u1eed ho\u00e0n t\u00e1c. H\u1ee3p t\u00e1c:B\u1ea3ng tr\u1eafng ho\u1eb7c m\u1ed9t t\u1edd gi\u1ea5y l\u1edbn cho ph\u00e9p nhi\u1ec1u b\u00ean li\u00ean quan ch\u1ec9 v\u00e0o v\u00e0 ch\u1ec9nh s\u1eeda s\u01a1 \u0111\u1ed3 c\u00f9ng l\u00fac. T\u1eadp trung nh\u1eadn th\u1ee9c:B\u1ea1n t\u1eadp trung v\u00e0o chuy\u1ec3n \u0111\u1ed9ng d\u1eef li\u1ec7u thay v\u00ec ho\u00e0n thi\u1ec7n h\u00ecnh th\u1ee9c th\u1ecb gi\u00e1c. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1eb7c bi\u1ec7t hi\u1ec7u qu\u1ea3 trong c\u00e1c giai \u0111o\u1ea1n kh\u00e1m ph\u00e1 ban \u0111\u1ea7u c\u1ee7a ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. N\u00f3 gi\u00fap c\u00e1c nh\u00f3m th\u1ed1ng nh\u1ea5t v\u1ec1 y\u00eau c\u1ea7u tr\u01b0\u1edbc khi cam k\u1ebft v\u00e0o thi\u1ebft k\u1ebf k\u1ef9 thu\u1eadt. \ud83d\udcd8 Hi\u1ec3u c\u00e1c th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i Tr\u01b0\u1edbc khi c\u1ea7m b\u00fat, b\u1ea1n ph\u1ea3i hi\u1ec3u c\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u. Nh\u1eefng k\u00fd hi\u1ec7u n\u00e0y \u0111\u1ea1i di\u1ec7n cho c\u00e1c kh\u1ed1i x\u00e2y d\u1ef1ng c\u01a1 b\u1ea3n c\u1ee7a b\u1ea5t k\u1ef3 m\u00f4 h\u00ecnh quy tr\u00ecnh n\u00e0o. D\u00f9 b\u1ea1n v\u1ebd tr\u00ean gi\u1ea5y hay tr\u00ean m\u00e0n h\u00ecnh, \u00fd ngh\u0129a v\u1eabn nh\u01b0 nhau. 1. C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i (Ngu\u1ed3n v\u00e0 \u0111\u00edch) C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i \u0111\u1ea1i di\u1ec7n cho con ng\u01b0\u1eddi, t\u1ed5 ch\u1ee9c ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n. Ch\u00fang l\u00e0 ranh gi\u1edbi c\u1ee7a m\u00f4 h\u00ecnh c\u1ee7a b\u1ea1n. B\u1ea1n n\u00ean ghi nh\u00e3n ch\u00fang r\u00f5 r\u00e0ng \u0111\u1ec3 ch\u1ec9 ra ai cung c\u1ea5p d\u1eef li\u1ec7u v\u00e0 ai nh\u1eadn \u0111\u1ea7u ra cu\u1ed1i c\u00f9ng. V\u00ed d\u1ee5: M\u1ed9t kh\u00e1ch h\u00e0ng, m\u1ed9t ng\u00e2n h\u00e0ng, m\u1ed9t d\u1ecbch v\u1ee5 th\u1eddi ti\u1ebft. Tr\u1ef1c quan: Th\u01b0\u1eddng l\u00e0 m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt ho\u1eb7c m\u1ed9t bi\u1ec3u t\u01b0\u1ee3ng \u0111\u01a1n gi\u1ea3n. 2. C\u00e1c qu\u00e1 tr\u00ecnh (S\u1ef1 bi\u1ebfn \u0111\u1ed5i) C\u00e1c qu\u00e1 tr\u00ecnh l\u00e0 nh\u1eefng h\u00e0nh \u0111\u1ed9ng thay \u0111\u1ed5i d\u1eef li\u1ec7u. Ch\u00fang nh\u1eadn \u0111\u1ea7u v\u00e0o, th\u1ef1c hi\u1ec7n c\u00f4ng vi\u1ec7c v\u00e0 t\u1ea1o ra \u0111\u1ea7u ra. M\u1ed7i qu\u00e1 tr\u00ecnh ph\u1ea3i c\u00f3 \u00edt nh\u1ea5t m\u1ed9t \u0111\u1ea7u v\u00e0o v\u00e0 m\u1ed9t \u0111\u1ea7u ra. V\u00ed d\u1ee5: T\u00ednh t\u1ed5ng, X\u00e1c minh ng\u01b0\u1eddi d\u00f9ng, T\u1ea1o b\u00e1o c\u00e1o. Tr\u1ef1c quan: Th\u01b0\u1eddng l\u00e0 m\u1ed9t h\u00ecnh tr\u00f2n, h\u00ecnh ch\u1eef nh\u1eadt bo g\u00f3c ho\u1eb7c m\u1ed9t h\u1ed9p c\u00f3 nh\u00e3n. 3. Kho d\u1eef li\u1ec7u (B\u1ed9 nh\u1edb) C\u00e1c kho d\u1eef li\u1ec7u \u0111\u1ea1i di\u1ec7n cho n\u01a1i th\u00f4ng tin \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef \u0111\u1ec3 s\u1eed d\u1ee5ng sau n\u00e0y. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m c\u00e1c t\u1eadp tin v\u1eadt l\u00fd, c\u01a1 s\u1edf d\u1eef li\u1ec7u ho\u1eb7c th\u1eadm ch\u00ed l\u00e0 m\u1ed9t t\u1ee7 h\u1ed3 s\u01a1 v\u1eadt l\u00fd. N\u1ebfu d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u \u1edf \u0111\u00e2u \u0111\u00f3 v\u00e0 \u0111\u01b0\u1ee3c truy c\u1eadp sau n\u00e0y, th\u00ec n\u00f3 thu\u1ed9c v\u1ec1 m\u1ed9t kho d\u1eef li\u1ec7u. V\u00ed d\u1ee5:C\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00e1ch h\u00e0ng, Nh\u1eadt k\u00fd \u0111\u01a1n h\u00e0ng, Danh s\u00e1ch t\u1ed3n kho. H\u00ecnh \u1ea3nh:Th\u01b0\u1eddng l\u00e0 m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt h\u1edf ho\u1eb7c c\u00e1c \u0111\u01b0\u1eddng song song. 4. Lu\u1ed3ng d\u1eef li\u1ec7u (S\u1ef1 di chuy\u1ec3n) C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u th\u1ec3 hi\u1ec7n con \u0111\u01b0\u1eddng m\u00e0 th\u00f4ng tin \u0111i qua. M\u1ed7i m\u0169i t\u00ean ph\u1ea3i c\u00f3 nh\u00e3n m\u00f4 t\u1ea3 n\u1ed9i dung d\u1eef li\u1ec7u. Kh\u00f4ng bao gi\u1edd \u0111\u1ec3 m\u1ed9t m\u0169i t\u00ean kh\u00f4ng c\u00f3 nh\u00e3n. V\u00ed d\u1ee5:Th\u00f4ng tin \u0111\u0103ng nh\u1eadp, H\u00f3a \u0111\u01a1n, Truy v\u1ea5n t\u00ecm ki\u1ebfm. H\u00ecnh \u1ea3nh:M\u1ed9t m\u0169i t\u00ean h\u01b0\u1edbng k\u1ebft n\u1ed1i hai th\u00e0nh ph\u1ea7n. \ud83d\udcca So s\u00e1nh c\u00e1c y\u1ebfu t\u1ed1 th\u1ee7 c\u00f4ng so v\u1edbi s\u1ed1 h\u00f3a Y\u1ebfu t\u1ed1 C\u00e1ch ti\u1ebfp c\u1eadn th\u1ee7 c\u00f4ng C\u00e1ch ti\u1ebfp c\u1eadn s\u1ed1 h\u00f3a\/\u1ee9ng d\u1ee5ng c\u01a1 b\u1ea3n T\u1ed1c \u0111\u1ed9 ph\u00e1c th\u1ea3o R\u1ea5t nhanh Nhanh Kh\u1ea3 n\u0103ng ch\u1ec9nh s\u1eeda Y\u00eau c\u1ea7u v\u1ebd l\u1ea1i ho\u1eb7c x\u00f3a K\u00e9o v\u00e0 th\u1ea3 T\u00ednh nh\u1ea5t qu\u00e1n Kh\u00e1c nhau t\u00f9y theo tay C\u00e1c h\u00ecnh d\u1ea1ng chu\u1ea9n h\u00f3a T\u00ednh di \u0111\u1ed9ng Y\u00eau c\u1ea7u qu\u00e9t ho\u1eb7c ch\u1ee5p \u1ea3nh Chia s\u1ebb t\u1ec7p t\u1ee9c th\u00ec Chi ph\u00ed T\u1ed1i thi\u1ec3u (Gi\u1ea5y v\u00e0 b\u00fat) Mi\u1ec5n ph\u00ed ho\u1eb7c chi ph\u00ed th\u1ea5p \ud83c\udf0d Ba c\u1ea5p \u0111\u1ed9 c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) M\u1ed9t m\u00f4 h\u00ecnh DFD ho\u00e0n ch\u1ec9nh kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t b\u1ea3n v\u1ebd duy nh\u1ea5t. \u0110\u00f3 l\u00e0 m\u1ed9t c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p c\u1ee7a c\u00e1c s\u01a1 \u0111\u1ed3, cho ph\u00e9p ph\u00f3ng to v\u00e0 thu nh\u1ecf v\u00e0o h\u1ec7 th\u1ed1ng. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c c\u1ea5p \u0111\u1ed9 n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 duy tr\u00ec s\u1ef1 r\u00f5 r\u00e0ng. M\u1ee9c 0: S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh \u0110\u00e2y l\u00e0 g\u00f3c nh\u00ecn c\u1ea5p cao. N\u00f3 th\u1ec3 hi\u1ec7n to\u00e0n b\u1ed9 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. N\u00f3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi: \u201cBi\u00ean gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng l\u00e0 g\u00ec?\u201d Tr\u1ecdng t\u00e2m:T\u01b0\u01a1ng t\u00e1c v\u1edbi th\u1ebf gi\u1edbi b\u00ean ngo\u00e0i. Chi ti\u1ebft:T\u1ed1i thi\u1ec3u. M\u1ed9t bong b\u00f3ng qu\u00e1 tr\u00ecnh, nhi\u1ec1u th\u1ef1c th\u1ec3. M\u1ee9c 1: Ph\u00e2n r\u00e3 ch\u1ee9c n\u0103ng S\u01a1 \u0111\u1ed3 n\u00e0y chia qu\u00e1 tr\u00ecnh duy nh\u1ea5t t\u1eeb m\u1ee9c 0 th\u00e0nh c\u00e1c qu\u00e1 tr\u00ecnh con ch\u00ednh. N\u00f3 th\u1ec3 hi\u1ec7n c\u00e1c ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c kho d\u1eef li\u1ec7u li\u00ean quan. Tr\u1ecdng t\u00e2m:C\u00e1c khu v\u1ef1c ch\u1ee9c n\u0103ng ch\u00ednh. Chi ti\u1ebft:T\u1eeb 5 \u0111\u1ebfn 9 qu\u00e1 tr\u00ecnh l\u00e0 m\u1ed9t quy t\u1eafc ph\u1ed5 bi\u1ebfn. M\u1ee9c 2: Ph\u00e2n t\u00edch chi ti\u1ebft M\u1ee9c \u0111\u1ed9 n\u00e0y ph\u00f3ng to v\u00e0o c\u00e1c qu\u00e1 tr\u00ecnh<\/p>\n","protected":false},"author":1,"featured_media":4189,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"DFD m\u00e0 kh\u00f4ng c\u1ea7n c\u00f4ng c\u1ee5: V\u1ebd s\u01a1 \u0111\u1ed3 hi\u1ec7u qu\u1ea3 b\u1eb1ng tay","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea7n m\u1ec1m chuy\u00ean d\u1ee5ng. M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 thi\u1ebft k\u1ebf DFD th\u1ee7 c\u00f4ng, k\u00fd hi\u1ec7u v\u00e0 c\u00e1c k\u1ef9 thu\u1eadt x\u00e1c minh.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[84],"tags":[77,83],"class_list":["post-4188","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dfd","tag-academic","tag-dfd"],"yoast_head":"\nDFD m\u00e0 kh\u00f4ng c\u1ea7n c\u00f4ng c\u1ee5: V\u1ebd s\u01a1 \u0111\u1ed3 hi\u1ec7u qu\u1ea3 b\u1eb1ng tay<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1ch t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea7n m\u1ec1m chuy\u00ean d\u1ee5ng. 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