{"id":1752,"date":"2026-04-01T19:03:03","date_gmt":"2026-04-01T19:03:03","guid":{"rendered":"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/"},"modified":"2026-04-01T19:03:03","modified_gmt":"2026-04-01T19:03:03","slug":"quick-start-data-flow-diagrams-systems-analysts","status":"publish","type":"post","link":"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn nhanh v\u1ec1 S\u01a1 \u0111\u1ed3 Lu\u1ed3ng D\u1eef li\u1ec7u cho c\u00e1c Nh\u00e0 ph\u00e2n t\u00edch H\u1ec7 th\u1ed1ng"},"content":{"rendered":"

S\u01a1 \u0111\u1ed3 Lu\u1ed3ng D\u1eef li\u1ec7u (DFD) l\u00e0 c\u00f4ng c\u1ee5 n\u1ec1n t\u1ea3ng cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c giao nhi\u1ec7m v\u1ee5 hi\u1ec3u r\u00f5, thi\u1ebft k\u1ebf v\u00e0 t\u00e0i li\u1ec7u h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng th\u00f4ng tin ph\u1ee9c t\u1ea1p. Ch\u00fang cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n qua h\u1ec7 th\u1ed1ng, l\u00e0m n\u1ed5i b\u1eadt c\u00e1c quy tr\u00ecnh, kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u v\u00e0 c\u00e1c t\u01b0\u01a1ng t\u00e1c b\u00ean ngo\u00e0i. H\u01b0\u1edbng d\u1eabn n\u00e0y n\u00eau r\u00f5 c\u00e1c nguy\u00ean t\u1eafc, k\u00fd hi\u1ec7u v\u00e0 ph\u01b0\u01a1ng ph\u00e1p c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c DFD ch\u00ednh x\u00e1c v\u00e0 h\u1eefu \u00edch m\u00e0 kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c c\u00f4ng c\u1ee5 \u0111\u1eb7c th\u00f9.<\/p>\n

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

S\u01a1 \u0111\u1ed3 Lu\u1ed3ng D\u1eef li\u1ec7u l\u00e0 g\u00ec? \ud83d\udcca<\/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 lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 logic, DFD t\u1eadp trung v\u00e0o qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u t\u1eeb \u0111\u1ea7u v\u00e0o \u0111\u1ebfn \u0111\u1ea7u ra. Ch\u00fang gi\u00fap c\u00e1c nh\u00e0 ph\u00e2n t\u00edch x\u00e1c \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1ch chia nh\u1ecf h\u1ec7 th\u1ed1ng th\u00e0nh c\u00e1c ph\u1ea7n nh\u1ecf h\u01a1n, d\u1ec5 qu\u1ea3n l\u00fd.<\/p>\n

DFD kh\u00f4ng th\u1ec3 hi\u1ec7n chi ti\u1ebft v\u1ec1 th\u1eddi gian ho\u1eb7c logic ra quy\u1ebft \u0111\u1ecbnh. Thay v\u00e0o \u0111\u00f3, ch\u00fang tr\u1ea3 l\u1eddi nh\u1eefng c\u00e2u h\u1ecfi then ch\u1ed1t nh\u01b0:<\/p>\n

    \n
  • D\u1eef li\u1ec7u \u0111\u1ebfn t\u1eeb \u0111\u00e2u?<\/li>\n
  • D\u1eef li\u1ec7u s\u1ebd \u0111\u01b0\u1ee3c x\u1eed l\u00fd nh\u01b0 th\u1ebf n\u00e0o b\u00ean trong h\u1ec7 th\u1ed1ng?<\/li>\n
  • D\u1eef li\u1ec7u \u0111i \u0111\u1ebfn \u0111\u00e2u sau khi \u0111\u01b0\u1ee3c x\u1eed l\u00fd?<\/li>\n
  • D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef \u1edf \u0111\u00e2u?<\/li>\n<\/ul>\n

    B\u1eb1ng c\u00e1ch tr\u1ef1c quan h\u00f3a c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y, c\u00e1c nh\u00e0 ph\u00e2n t\u00edch c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec3m ngh\u1ebdn, c\u00e1c quy tr\u00ecnh tr\u00f9ng l\u1eb7p v\u00e0 c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u vi\u1ebft m\u00e3. C\u00e1ch k\u00fd hi\u1ec7u s\u1eed d\u1ee5ng trong DFD th\u01b0\u1eddng tu\u00e2n theo chu\u1ea9n Yourdon v\u00e0 DeMarco, m\u1eb7c d\u00f9 v\u1eabn t\u1ed3n t\u1ea1i m\u1ed9t s\u1ed1 bi\u1ebfn th\u1ec3.<\/p>\n

    T\u1ea1i sao c\u00e1c Nh\u00e0 ph\u00e2n t\u00edch H\u1ec7 th\u1ed1ng c\u1ea7n DFD? \ud83d\udca1<\/h2>\n

    \u0110\u1ed1i v\u1edbi m\u1ed9t nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng, s\u1ef1 r\u00f5 r\u00e0ng l\u00e0 \u0111i\u1ec1u t\u1ed1i quan tr\u1ecdng. C\u00e1c b\u00ean li\u00ean quan th\u01b0\u1eddng g\u1eb7p kh\u00f3 kh\u0103n v\u1edbi thu\u1eadt ng\u1eef k\u1ef9 thu\u1eadt, nh\u01b0ng c\u00e1c s\u01a1 \u0111\u1ed3 tr\u1ef1c quan s\u1ebd t\u1ea1o ra s\u1ef1 k\u1ebft n\u1ed1i gi\u1eefa nhu c\u1ea7u kinh doanh v\u00e0 tri\u1ec3n khai k\u1ef9 thu\u1eadt. DFD \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong giai \u0111o\u1ea1n ph\u00e2n t\u00edch:<\/p>\n

      \n
    • Giao ti\u1ebfp:<\/strong> Ch\u00fang \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t ng\u00f4n ng\u1eef chung gi\u1eefa c\u00e1c b\u00ean li\u00ean quan kinh doanh v\u00e0 c\u00e1c nh\u00f3m k\u1ef9 thu\u1eadt.<\/li>\n
    • T\u00e0i li\u1ec7u h\u00f3a:<\/strong> Ch\u00fang cung c\u1ea5p m\u1ed9t b\u1ea3n ghi v\u0129nh vi\u1ec5n v\u1ec1 h\u00e0nh vi h\u1ec7 th\u1ed1ng \u0111\u1ec3 ph\u1ee5c v\u1ee5 cho vi\u1ec7c b\u1ea3o tr\u00ec trong t\u01b0\u01a1ng lai.<\/li>\n
    • Ph\u00e2n t\u00edch:<\/strong> Ch\u00fang ti\u1ebft l\u1ed9 c\u00e1c quy tr\u00ecnh ho\u1eb7c kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u b\u1ecb b\u1ecf s\u00f3t trong c\u00e1c cu\u1ed9c ph\u1ecfng v\u1ea5n ban \u0111\u1ea7u.<\/li>\n
    • X\u00e1c minh:<\/strong> Ch\u00fang gi\u00fap x\u00e1c minh r\u1eb1ng h\u1ec7 th\u1ed1ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c y\u00eau c\u1ea7u \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh.<\/li>\n<\/ul>\n\n\n\n\n\n\n\n\n
      L\u1ee3i \u00edch<\/th>\nT\u00e1c \u0111\u1ed9ng \u0111\u1ebfn D\u1ef1 \u00e1n<\/th>\n<\/tr>\n<\/thead>\n
      X\u00e1c minh Y\u00eau c\u1ea7u<\/td>\nGi\u1ea3m hi\u1ec7n t\u01b0\u1ee3ng m\u1edf r\u1ed9ng ph\u1ea1m vi d\u1ef1 \u00e1n b\u1eb1ng c\u00e1ch x\u00e1c nh\u1eadn r\u00f5 r\u00e0ng nh\u1eefng g\u00ec n\u1eb1m trong v\u00e0 ngo\u00e0i ph\u1ea1m vi.<\/td>\n<\/tr>\n
      Thi\u1ebft k\u1ebf H\u1ec7 th\u1ed1ng<\/td>\nH\u01b0\u1edbng d\u1eabn thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 ki\u1ebfn tr\u00fac API.<\/td>\n<\/tr>\n
      \u0110\u00e0o t\u1ea1o<\/td>\nH\u1ed7 tr\u1ee3 c\u00e1c th\u00e0nh vi\u00ean m\u1edbi trong nh\u00f3m hi\u1ec3u nhanh logic h\u1ec7 th\u1ed1ng.<\/td>\n<\/tr>\n
      G\u1ee1 l\u1ed7i<\/td>\nGi\u00fap truy v\u1ebft c\u00e1c l\u1ed7i d\u1eef li\u1ec7u v\u1ec1 ngu\u1ed3n g\u1ed1c c\u1ee7a ch\u00fang.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh v\u00e0 k\u00fd hi\u1ec7u \ud83d\udee0\ufe0f<\/h2>\n

      Hi\u1ec3u r\u00f5 c\u00e1c kh\u1ed1i x\u00e2y d\u1ef1ng c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 ch\u00ednh x\u00e1c. C\u00f3 b\u1ed1n th\u00e0nh ph\u1ea7n ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong k\u00fd hi\u1ec7u DFD chu\u1ea9n.<\/p>\n

      1. 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 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. Ch\u00fang l\u00e0 ng\u01b0\u1eddi d\u00f9ng, c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c ho\u1eb7c t\u1ed5 ch\u1ee9c t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng. Trong s\u01a1 \u0111\u1ed3, ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh ch\u1eef nh\u1eadt ho\u1eb7c h\u00ecnh vu\u00f4ng.<\/p>\n

        \n
      • V\u00ed d\u1ee5:<\/em>Kh\u00e1ch h\u00e0ng, Ng\u00e2n h\u00e0ng, H\u1ec7 th\u1ed1ng kho h\u00e0ng.<\/li>\n
      • L\u01b0u \u00fd:<\/em>Kh\u00f4ng n\u00ean \u0111\u01b0a ng\u01b0\u1eddi d\u00f9ng n\u1ed9i b\u1ed9 ho\u1eb7c b\u1ed9 ph\u1eadn n\u1ed9i b\u1ed9 v\u00e0o danh s\u00e1ch th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i n\u1ebfu ch\u00fang thu\u1ed9c v\u1ec1 h\u1ec7 th\u1ed1ng \u0111ang \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh h\u00f3a.<\/li>\n<\/ul>\n

        2. C\u00e1c qu\u00e1 tr\u00ecnh<\/h3>\n

        C\u00e1c qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u t\u1eeb \u0111\u1ea7u v\u00e0o th\u00e0nh \u0111\u1ea7u ra. Ch\u00fang \u0111\u1ea1i di\u1ec7n cho c\u00e1c ch\u1ee9c n\u0103ng ho\u1eb7c h\u00e0nh \u0111\u1ed9ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi h\u1ec7 th\u1ed1ng. Trong DFD, c\u00e1c qu\u00e1 tr\u00ecnh th\u01b0\u1eddng \u0111\u01b0\u1ee3c v\u1ebd d\u01b0\u1edbi d\u1ea1ng h\u00ecnh tr\u00f2n ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt bo g\u00f3c. 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

          \n
        • V\u00ed d\u1ee5:<\/em>T\u00ednh thu\u1ebf, X\u00e1c minh ng\u01b0\u1eddi d\u00f9ng, T\u1ea1o b\u00e1o c\u00e1o.<\/li>\n
        • L\u01b0u \u00fd:<\/em>Tr\u00e1nh \u0111\u1eb7t t\u00ean qu\u00e1 tr\u00ecnh b\u1eb1ng c\u00e1c thu\u1eadt ng\u1eef d\u1eef li\u1ec7u (v\u00ed d\u1ee5: \u201cL\u01b0u tr\u1eef d\u1eef li\u1ec7u\u201d). Thay v\u00e0o \u0111\u00f3, h\u00e3y d\u00f9ng \u0111\u1ed9ng t\u1eeb h\u00e0nh \u0111\u1ed9ng.<\/li>\n<\/ul>\n

          3. C\u00e1c kho d\u1eef li\u1ec7u<\/h3>\n

          C\u00e1c kho d\u1eef li\u1ec7u \u0111\u1ea1i di\u1ec7n cho n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef b\u00ean trong h\u1ec7 th\u1ed1ng \u0111\u1ec3 s\u1eed d\u1ee5ng sau n\u00e0y. Ch\u00fang kh\u00f4ng ng\u1ee5 \u00fd m\u1ed9t c\u00f4ng ngh\u1ec7 c\u1ee5 th\u1ec3 (nh\u01b0 c\u01a1 s\u1edf d\u1eef li\u1ec7u SQL hay b\u1ea3ng t\u00ednh Excel), m\u00e0 ch\u1ec9 l\u00e0 v\u1ecb tr\u00ed logic c\u1ee7a d\u1eef li\u1ec7u. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c v\u1ebd d\u01b0\u1edbi d\u1ea1ng h\u00ecnh ch\u1eef nh\u1eadt h\u1edf ho\u1eb7c c\u00e1c \u0111\u01b0\u1eddng song song.<\/p>\n

            \n
          • V\u00ed d\u1ee5:<\/em>C\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00e1ch h\u00e0ng, L\u1ecbch s\u1eed \u0111\u01a1n h\u00e0ng, Kho l\u01b0u tr\u1eef t\u1eadp tin.<\/li>\n
          • L\u01b0u \u00fd:<\/em>D\u1eef li\u1ec7u ch\u1ea3y v\u00e0o v\u00e0 ra kh\u1ecfi c\u00e1c kho, nh\u01b0ng c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c kho d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n

            4. C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u<\/h3>\n

            C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u th\u1ec3 hi\u1ec7n s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3, qu\u00e1 tr\u00ecnh v\u00e0 kho d\u1eef li\u1ec7u. Ch\u00fang \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng c\u00e1c m\u0169i t\u00ean. Nh\u00e3n tr\u00ean m\u0169i t\u00ean m\u00f4 t\u1ea3 g\u00f3i d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c di chuy\u1ec3n, ch\u1ee9 kh\u00f4ng ph\u1ea3i h\u00e0nh \u0111\u1ed9ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n.<\/p>\n

              \n
            • V\u00ed d\u1ee5:<\/em>H\u00f3a \u0111\u01a1n, Chi ti\u1ebft thanh to\u00e1n, Th\u00f4ng tin \u0111\u0103ng nh\u1eadp ng\u01b0\u1eddi d\u00f9ng.<\/li>\n
            • L\u01b0u \u00fd:<\/em>C\u00e1c m\u0169i t\u00ean ph\u1ea3i c\u00f3 h\u01b0\u1edbng \u0111\u01a1n. N\u1ebfu d\u1eef li\u1ec7u di chuy\u1ec3n theo c\u1ea3 hai chi\u1ec1u, h\u00e3y s\u1eed d\u1ee5ng hai m\u0169i t\u00ean ri\u00eang bi\u1ec7t.<\/li>\n<\/ul>\n\n\n\n\n\n\n\n\n
              Th\u00e0nh ph\u1ea7n<\/th>\nH\u00ecnh d\u1ea1ng<\/th>\nCh\u1ee9c n\u0103ng<\/th>\n<\/tr>\n<\/thead>\n
              Th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i<\/td>\nH\u00ecnh ch\u1eef nh\u1eadt<\/td>\nNgu\u1ed3n ho\u1eb7c \u0111\u00edch c\u1ee7a d\u1eef li\u1ec7u b\u00ean ngo\u00e0i h\u1ec7 th\u1ed1ng<\/td>\n<\/tr>\n
              Quy tr\u00ecnh<\/td>\nH\u00ecnh tr\u00f2n \/ H\u00ecnh ch\u1eef nh\u1eadt bo tr\u00f2n<\/td>\nChuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u<\/td>\n<\/tr>\n
              Kho d\u1eef li\u1ec7u<\/td>\nH\u00ecnh ch\u1eef nh\u1eadt m\u1edf<\/td>\nL\u01b0u tr\u1eef d\u1eef li\u1ec7u \u0111\u1ec3 s\u1eed d\u1ee5ng sau n\u00e0y<\/td>\n<\/tr>\n
              D\u00f2ng d\u1eef li\u1ec7u<\/td>\nM\u0169i t\u00ean<\/td>\nCh\u1ec9 ra h\u01b0\u1edbng di chuy\u1ec3n c\u1ee7a d\u1eef li\u1ec7u<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

              C\u00e1c m\u1ee9c \u0111\u1ed9 c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \ud83d\udcc9<\/h2>\n

              S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 ph\u00e2n c\u1ea5p. B\u1ea1n b\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1i nh\u00ecn t\u1ed5ng quan c\u1ea5p cao v\u00e0 d\u1ea7n d\u1ea7n chia nh\u1ecf c\u00e1c quy tr\u00ecnh th\u00e0nh c\u00e1c ti\u1ec3u quy tr\u00ecnh chi ti\u1ebft h\u01a1n. K\u1ef9 thu\u1eadt n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ph\u00e2n r\u00e3.<\/p>\n

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

              S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh l\u00e0 m\u1ee9c tr\u1eebu t\u01b0\u1ee3ng cao nh\u1ea5t. N\u00f3 th\u1ec3 hi\u1ec7n h\u1ec7 th\u1ed1ng nh\u01b0 m\u1ed9t quy tr\u00ecnh duy nh\u1ea5t (th\u01b0\u1eddng l\u00e0 m\u1ed9t h\u00ecnh tr\u00f2n l\u1edbn) v\u00e0 t\u1ea5t c\u1ea3 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i t\u01b0\u01a1ng t\u00e1c v\u1edbi n\u00f3. N\u00f3 x\u00e1c \u0111\u1ecbnh ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n

                \n
              • M\u1ed9t quy tr\u00ecnh:<\/strong> To\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t bong b\u00f3ng.<\/li>\n
              • Nh\u1eadp\/xu\u1ea5t:<\/strong> Hi\u1ec3n th\u1ecb c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u ch\u00ednh \u0111i v\u00e0o v\u00e0 r\u1eddi kh\u1ecfi h\u1ec7 th\u1ed1ng.<\/li>\n
              • Kh\u00f4ng c\u00f3 kho d\u1eef li\u1ec7u:<\/strong> S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh th\u01b0\u1eddng kh\u00f4ng hi\u1ec3n th\u1ecb c\u00e1c kho d\u1eef li\u1ec7u n\u1ed9i b\u1ed9.<\/li>\n<\/ul>\n

                M\u1ee9c 1: Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng<\/h3>\n

                S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u m\u1ee9c 1 t\u00e1ch r\u1eddi quy tr\u00ecnh duy nh\u1ea5t t\u1eeb s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh th\u00e0nh c\u00e1c ti\u1ec3u quy tr\u00ecnh ch\u00ednh. M\u1ee9c n\u00e0y ti\u1ebft l\u1ed9 c\u00e1c ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng b\u1ecb m\u1eafc k\u1eb9t v\u00e0o chi ti\u1ebft nh\u1ecf.<\/p>\n

                  \n
                • C\u00e1c quy tr\u00ecnh ch\u00ednh:<\/strong> Th\u01b0\u1eddng t\u1eeb 5 \u0111\u1ebfn 9 quy tr\u00ecnh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh d\u1ec5 \u0111\u1ecdc.<\/li>\n
                • Kho d\u1eef li\u1ec7u:<\/strong> C\u00e1c kho l\u01b0u tr\u1eef n\u1ed9i b\u1ed9 \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u \u1edf \u0111\u00e2y.<\/li>\n
                • T\u00ednh nh\u1ea5t qu\u00e1n:<\/strong> C\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra ph\u1ea3i kh\u1edbp v\u1edbi s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh.<\/li>\n<\/ul>\n

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

                  S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea5p 2 l\u1ea5y c\u00e1c qu\u00e1 tr\u00ecnh c\u1ee5 th\u1ec3 t\u1eeb c\u1ea5p 1 v\u00e0 ph\u00e2n t\u00edch ch\u00fang s\u00e2u h\u01a1n. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c ch\u1ee9c n\u0103ng ph\u1ee9c t\u1ea1p c\u1ea7n \u0111\u1ed9 chi ti\u1ebft cao h\u01a1n.<\/p>\n

                    \n
                  • Ch\u00fa tr\u1ecdng:<\/strong>Ch\u1ec9 c\u00e1c qu\u00e1 tr\u00ecnh c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch s\u00e2u; c\u00e1c qu\u00e1 tr\u00ecnh kh\u00e1c v\u1eabn gi\u1eef nguy\u00ean nh\u01b0 c\u00e1c h\u00ecnh tr\u00f2n c\u1ea5p 1.<\/li>\n
                  • Chi ti\u1ebft:<\/strong>Hi\u1ec3n th\u1ecb c\u00e1c ph\u00e9p bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u c\u1ee5 th\u1ec3 v\u00e0 c\u00e1c kho l\u01b0u tr\u1eef trung gian.<\/li>\n<\/ul>\n

                    T\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u: H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc \ud83d\udcdd<\/h2>\n

                    Vi\u1ec7c x\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u00f2i h\u1ecfi m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 nh\u1ea5t qu\u00e1n. H\u00e3y tu\u00e2n theo c\u00e1c b\u01b0\u1edbc sau \u0111\u1ec3 x\u00e2y d\u1ef1ng m\u1ed9t s\u01a1 \u0111\u1ed3 v\u1eefng ch\u1eafc.<\/p>\n

                    B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh ranh gi\u1edbi h\u1ec7 th\u1ed1ng<\/h3>\n

                    X\u00e1c \u0111\u1ecbnh nh\u1eefng g\u00ec n\u1eb1m b\u00ean trong h\u1ec7 th\u1ed1ng v\u00e0 nh\u1eefng g\u00ec n\u1eb1m b\u00ean ngo\u00e0i. \u0110i\u1ec1u n\u00e0y x\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 n\u00e0o l\u00e0 b\u00ean ngo\u00e0i v\u00e0 th\u1ef1c th\u1ec3 n\u00e0o l\u00e0 b\u00ean trong. M\u1ecdi th\u1ee9 n\u1eb1m ngo\u00e0i ranh gi\u1edbi \u0111\u1ec1u l\u00e0 m\u1ed9t th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i.<\/p>\n

                    B\u01b0\u1edbc 2: X\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i<\/h3>\n

                    Li\u1ec7t k\u00ea t\u1ea5t c\u1ea3 nh\u1eefng ng\u01b0\u1eddi, ph\u00f2ng ban ho\u1eb7c h\u1ec7 th\u1ed1ng t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n. G\u00e1n cho m\u1ed7i th\u1ef1c th\u1ec3 m\u1ed9t t\u00ean duy nh\u1ea5t. Tr\u00e1nh d\u00f9ng t\u00ean m\u01a1 h\u1ed3 nh\u01b0 \u201cNg\u01b0\u1eddi d\u00f9ng\u201d; h\u00e3y d\u00f9ng c\u00e1c vai tr\u00f2 c\u1ee5 th\u1ec3 nh\u01b0 \u201cQu\u1ea3n tr\u1ecb vi\u00ean\u201d ho\u1eb7c \u201cKh\u00e1ch\u201d.<\/p>\n

                    B\u01b0\u1edbc 3: B\u1ea3n \u0111\u1ed3 c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u ch\u00ednh<\/h3>\n

                    V\u1ebd c\u00e1c m\u0169i t\u00ean k\u1ebft n\u1ed1i c\u00e1c th\u1ef1c th\u1ec3 v\u1edbi h\u1ec7 th\u1ed1ng. G\u00e1n nh\u00e3n cho c\u00e1c lu\u1ed3ng n\u00e0y b\u1eb1ng d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c chuy\u1ec3n (v\u00ed d\u1ee5: \u201cY\u00eau c\u1ea7u \u0111\u0103ng nh\u1eadp\u201d, \u201cB\u00e1o c\u00e1o doanh s\u1ed1\u201d). \u0110\u1ea3m b\u1ea3o m\u1ed7i th\u1ef1c th\u1ec3 c\u00f3 \u00edt nh\u1ea5t m\u1ed9t k\u1ebft n\u1ed1i.<\/p>\n

                    B\u01b0\u1edbc 4: X\u00e1c \u0111\u1ecbnh c\u00e1c qu\u00e1 tr\u00ecnh c\u1ed1t l\u00f5i<\/h3>\n

                    Chia nh\u1ecf h\u1ec7 th\u1ed1ng th\u00e0nh c\u00e1c ch\u1ee9c n\u0103ng logic. \u0110\u1eb7t t\u00ean cho m\u1ed7i qu\u00e1 tr\u00ecnh theo \u0111\u1ecbnh d\u1ea1ng \u0111\u1ed9ng t\u1eeb-danh t\u1eeb (v\u00ed d\u1ee5: \u201cX\u1eed l\u00fd \u0111\u01a1n h\u00e0ng\u201d). \u0110\u1ea3m b\u1ea3o m\u1ecdi qu\u00e1 tr\u00ecnh \u0111\u1ec1u c\u00f3 \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra.<\/p>\n

                    B\u01b0\u1edbc 5: Th\u00eam c\u00e1c kho d\u1eef li\u1ec7u<\/h3>\n

                    X\u00e1c \u0111\u1ecbnh n\u01a1i d\u1eef li\u1ec7u c\u1ea7n \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef. K\u1ebft n\u1ed1i c\u00e1c qu\u00e1 tr\u00ecnh v\u1edbi c\u00e1c kho d\u1eef li\u1ec7u \u0111\u1ec3 th\u1ec3 hi\u1ec7n c\u00e1c thao t\u00e1c \u0111\u1ecdc v\u00e0 ghi. Nh\u1edb r\u1eb1ng lu\u1ed3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111i t\u1eeb Qu\u00e1 tr\u00ecnh sang Kho ho\u1eb7c t\u1eeb Kho sang Qu\u00e1 tr\u00ecnh.<\/p>\n

                    B\u01b0\u1edbc 6: Xem x\u00e9t v\u00e0 c\u00e2n b\u1eb1ng<\/h3>\n

                    Ki\u1ec3m tra xem \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u00f3 kh\u1edbp nhau gi\u1eefa s\u01a1 \u0111\u1ed3 cha v\u00e0 s\u01a1 \u0111\u1ed3 con hay kh\u00f4ng. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cc\u00e2n b\u1eb1ng\u201d. N\u1ebfu m\u1ed9t qu\u00e1 tr\u00ecnh c\u1ea5p 1 c\u00f3 \u0111\u1ea7u v\u00e0o l\u00e0 \u201cD\u1eef li\u1ec7u kh\u00e1ch h\u00e0ng\u201d, s\u01a1 \u0111\u1ed3 con c\u0169ng ph\u1ea3i nh\u1eadn \u0111\u01b0\u1ee3c \u201cD\u1eef li\u1ec7u kh\u00e1ch h\u00e0ng\u201d.<\/p>\n

                    C\u00e1c quy t\u1eafc x\u00e1c th\u1ef1c v\u00e0 th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u2705<\/h2>\n

                    \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt l\u00e0 h\u1ee3p l\u1ec7 v\u00e0 h\u1eefu \u00edch, h\u00e3y tu\u00e2n theo c\u00e1c quy t\u1eafc x\u00e1c th\u1ef1c sau.<\/p>\n

                      \n
                    • Kh\u00f4ng c\u00f3 lu\u1ed3ng ma qu\u00e1i:<\/strong>M\u1ecdi lu\u1ed3ng d\u1eef li\u1ec7u ph\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t qu\u00e1 tr\u00ecnh ho\u1eb7c kho d\u1eef li\u1ec7u. Kh\u00f4ng \u0111\u1ec3 c\u00e1c m\u0169i t\u00ean tr\u00f4i n\u1ed5i.<\/li>\n
                    • H\u1ed1 \u0111en:<\/strong>M\u1ed9t qu\u00e1 tr\u00ecnh kh\u00f4ng th\u1ec3 c\u00f3 \u0111\u1ea7u ra m\u00e0 kh\u00f4ng c\u00f3 \u0111\u1ea7u v\u00e0o. N\u1ebfu d\u1eef li\u1ec7u \u0111i v\u00e0o, ph\u1ea3i c\u00f3 \u0111i\u1ec1u g\u00ec \u0111\u00f3 x\u1ea3y ra v\u1edbi n\u00f3.<\/li>\n
                    • Nh\u1eefng \u0111i\u1ec1u k\u1ef3 di\u1ec7u:<\/strong>M\u1ed9t qu\u00e1 tr\u00ecnh kh\u00f4ng th\u1ec3 c\u00f3 \u0111\u1ea7u v\u00e0o m\u00e0 kh\u00f4ng c\u00f3 \u0111\u1ea7u ra. M\u1ecdi ph\u00e9p bi\u1ebfn \u0111\u1ed5i \u0111\u1ec1u ph\u1ea3i t\u1ea1o ra k\u1ebft qu\u1ea3.<\/li>\n
                    • \u0110\u1eb7t t\u00ean cho kho d\u1eef li\u1ec7u:<\/strong>D\u00f9ng danh t\u1eeb s\u1ed1 nhi\u1ec1u cho kho d\u1eef li\u1ec7u (v\u00ed d\u1ee5: \u201c\u0110\u01a1n h\u00e0ng\u201d) v\u00e0 danh t\u1eeb s\u1ed1 \u00edt cho lu\u1ed3ng d\u1eef li\u1ec7u (v\u00ed d\u1ee5: \u201c\u0110\u01a1n h\u00e0ng\u201d).<\/li>\n
                    • \u0110\u1eb7t t\u00ean cho qu\u00e1 tr\u00ecnh:<\/strong> S\u1eed d\u1ee5ng \u0111\u1ed9ng t\u1eeb ch\u1ee7 \u0111\u1ed9ng. Tr\u00e1nh \u0111\u1eb7t t\u00ean cho c\u00e1c qu\u00e1 tr\u00ecnh theo d\u1eef li\u1ec7u ch\u00fang x\u1eed l\u00fd (v\u00ed d\u1ee5: d\u00f9ng \u201cX\u00e1c th\u1ef1c M\u1eadt kh\u1ea9u\u201d thay v\u00ec \u201cM\u1eadt kh\u1ea9u\u201d).<\/li>\n
                    • T\u00ednh nh\u1ea5t qu\u00e1n:<\/strong>\u0110\u1ea3m b\u1ea3o c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u gi\u1ed1ng nhau \u0111\u01b0\u1ee3c \u0111\u00e1nh nh\u00e3n gi\u1ed1ng nhau \u1edf c\u00e1c m\u1ee9c \u0111\u1ed9 kh\u00e1c nhau c\u1ee7a s\u01a1 \u0111\u1ed3.<\/li>\n
                    • Ki\u1ec3m so\u00e1t \u0111\u1ed9 ph\u1ee9c t\u1ea1p:<\/strong>N\u1ebfu m\u1ed9t h\u00ecnh tr\u00f2n qu\u00e1 ch\u1eadt ch\u1ed9i, h\u00e3y ph\u00e2n t\u00e1ch n\u00f3. M\u1ee5c ti\u00eau l\u00e0 t\u1eeb 5 \u0111\u1ebfn 9 qu\u00e1 tr\u00ecnh tr\u00ean m\u1ed7i s\u01a1 \u0111\u1ed3.<\/li>\n<\/ul>\n

                      Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh \u26a0\ufe0f<\/h2>\n

                      Ngay c\u1ea3 c\u00e1c nh\u00e0 ph\u00e2n t\u00edch c\u00f3 kinh nghi\u1ec7m c\u0169ng m\u1eafc sai l\u1ea7m. Nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m th\u1eddi gian trong c\u00e1c bu\u1ed5i xem x\u00e9t.<\/p>\n

                        \n
                      • Nh\u1ea7m l\u1eabn gi\u1eefa \u0110i\u1ec1u khi\u1ec3n v\u00e0 D\u1eef li\u1ec7u:<\/strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) th\u1ec3 hi\u1ec7n d\u1eef li\u1ec7u, kh\u00f4ng ph\u1ea3i lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n. Kh\u00f4ng hi\u1ec3n th\u1ecb c\u00e1c h\u00ecnh thoi quy\u1ebft \u0111\u1ecbnh hay v\u00f2ng l\u1eb7p (tr\u1eeb khi bi\u1ec3u di\u1ec5n l\u01b0u tr\u1eef d\u1eef li\u1ec7u).<\/li>\n
                      • K\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp gi\u1eefa Entiti v\u00e0 Kho d\u1eef li\u1ec7u:<\/strong>C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i kh\u00f4ng th\u1ec3 ghi tr\u1ef1c ti\u1ebfp v\u00e0o kho d\u1eef li\u1ec7u. T\u1ea5t c\u1ea3 d\u1eef li\u1ec7u ph\u1ea3i \u0111i qua m\u1ed9t qu\u00e1 tr\u00ecnh tr\u01b0\u1edbc.<\/li>\n
                      • Chi ti\u1ebft qu\u00e1 k\u1ef9 thu\u1eadt:<\/strong>Kh\u00f4ng hi\u1ec3n th\u1ecb c\u00e1c b\u1ea3ng c\u01a1 s\u1edf d\u1eef li\u1ec7u hay t\u00ean t\u1ec7p. Gi\u1eef n\u00f3 mang t\u00ednh logic, ch\u1ee9 kh\u00f4ng ph\u1ea3i v\u1eadt l\u00fd.<\/li>\n
                      • Thi\u1ebfu c\u00e1c v\u00f2ng h\u1ed3i ti\u1ebfp:<\/strong>N\u1ebfu m\u1ed9t qu\u00e1 tr\u00ecnh c\u1ea7n \u0111\u1ea7u v\u00e0o t\u1eeb m\u1ed9t \u0111\u1ea7u ra tr\u01b0\u1edbc \u0111\u00f3, h\u00e3y \u0111\u1ea3m b\u1ea3o lu\u1ed3ng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n ch\u00ednh x\u00e1c.<\/li>\n
                      • T\u00ean g\u1ecdi kh\u00f4ng nh\u1ea5t qu\u00e1n:<\/strong>Tr\u00e1nh s\u1eed d\u1ee5ng t\u1eeb \u0111\u1ed3ng ngh\u0129a cho c\u00f9ng m\u1ed9t d\u1eef li\u1ec7u (v\u00ed d\u1ee5: \u201cKh\u00e1ch h\u00e0ng\u201d so v\u1edbi \u201cKh\u00e1ch\u201d). Duy tr\u00ec m\u1ed9t h\u1ec7 th\u1ed1ng thu\u1eadt ng\u1eef nh\u1ea5t qu\u00e1n.<\/li>\n<\/ul>\n

                        S\u01a1 \u0111\u1ed3 DFD logic so v\u1edbi s\u01a1 \u0111\u1ed3 DFD v\u1eadt l\u00fd \ud83d\udd04<\/h2>\n

                        C\u00e1c nh\u00e0 ph\u00e2n t\u00edch th\u01b0\u1eddng t\u1ea1o ra hai lo\u1ea1i s\u01a1 \u0111\u1ed3 cho c\u00f9ng m\u1ed9t h\u1ec7 th\u1ed1ng. Hi\u1ec3u \u0111\u01b0\u1ee3c s\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft cho giao ti\u1ebfp hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n\n\n\n\n\n\n
                        T\u00ednh n\u0103ng<\/th>\nS\u01a1 \u0111\u1ed3 DFD logic<\/th>\nS\u01a1 \u0111\u1ed3 DFD v\u1eadt l\u00fd<\/th>\n<\/tr>\n<\/thead>\n
                        Tr\u1ecdng t\u00e2m<\/td>\nY\u00eau c\u1ea7u v\u00e0 quy t\u1eafc kinh doanh.<\/td>\nChi ti\u1ebft tri\u1ec3n khai v\u00e0 c\u00f4ng ngh\u1ec7.<\/td>\n<\/tr>\n
                        T\u00ean qu\u00e1 tr\u00ecnh<\/td>\nC\u00e1c h\u00e0nh \u0111\u1ed9ng chung chung (v\u00ed d\u1ee5: \u201cT\u00ednh Gi\u00e1\u201d).<\/td>\nC\u00e1c h\u00e0nh \u0111\u1ed9ng c\u1ee5 th\u1ec3 (v\u00ed d\u1ee5: \u201cCh\u1ea1y Thu\u1eadt to\u00e1n Thu\u1ebf Phi\u00ean b\u1ea3n 2\u201d).<\/td>\n<\/tr>\n
                        Kho d\u1eef li\u1ec7u<\/td>\nC\u00e1c container logic (v\u00ed d\u1ee5: \u201cH\u00e0ng t\u1ed3n kho\u201d).<\/td>\nC\u00e1c t\u1ec7p ho\u1eb7c b\u1ea3ng v\u1eadt l\u00fd (v\u00ed d\u1ee5: \u201cB\u1ea3ng SQL INV\u201d).<\/td>\n<\/tr>\n
                        Th\u1eddi gian<\/td>\nKh\u00f4ng hi\u1ec3n th\u1ecb th\u1eddi gian ho\u1eb7c t\u1ea7n su\u1ea5t.<\/td>\nC\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb x\u1eed l\u00fd theo l\u00f4 ho\u1eb7c c\u00e1c s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t th\u1eddi gian th\u1ef1c.<\/td>\n<\/tr>\n
                        Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/td>\nThu th\u1eadp y\u00eau c\u1ea7u v\u00e0 thi\u1ebft k\u1ebf.<\/td>\nKi\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng v\u00e0 ph\u00e1t tri\u1ec3n.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                        Ph\u00e2n bi\u1ec7t DFD v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 kh\u00e1c \ud83d\udcd0<\/h2>\n

                        D\u1ec5 nh\u1ea7m l\u1eabn DFD v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 m\u00f4 h\u00ecnh h\u00f3a kh\u00e1c. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch ch\u00fang kh\u00e1c nhau.<\/p>\n

                          \n
                        • DFD so v\u1edbi S\u01a1 \u0111\u1ed3 lu\u1ed3ng:<\/strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng th\u1ec3 hi\u1ec7n lu\u1ed3ng logic (n\u1ebfu\/else, v\u00f2ng l\u1eb7p). DFD th\u1ec3 hi\u1ec7n s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u. S\u01a1 \u0111\u1ed3 lu\u1ed3ng tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi \u201cVi\u1ec7c g\u00ec x\u1ea3y ra ti\u1ebfp theo?\u201d DFD tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi \u201cD\u1eef li\u1ec7u \u0111i \u0111\u1ebfn \u0111\u00e2u?\u201d<\/li>\n
                        • DFD so v\u1edbi ERD:<\/strong>S\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3 t\u1eadp trung v\u00e0o c\u1ea5u tr\u00fac d\u1eef li\u1ec7u v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3. DFD t\u1eadp trung v\u00e0o s\u1ef1 di chuy\u1ec3n v\u00e0 bi\u1ebfn \u0111\u1ed5i c\u1ee7a d\u1eef li\u1ec7u \u0111\u00f3.<\/li>\n
                        • DFD so v\u1edbi S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng:<\/strong>S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng th\u1ec3 hi\u1ec7n t\u01b0\u01a1ng t\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u1ee5c ti\u00eau. DFD th\u1ec3 hi\u1ec7n c\u00e1c c\u01a1 ch\u1ebf b\u00ean trong h\u1ed7 tr\u1ee3 nh\u1eefng m\u1ee5c ti\u00eau \u0111\u00f3.<\/li>\n<\/ul>\n

                          B\u1ea3o tr\u00ec v\u00e0 c\u1eadp nh\u1eadt DFDs \ud83d\udd04<\/h2>\n

                          DFD kh\u00f4ng ph\u1ea3i l\u00e0 t\u00e0i li\u1ec7u giao n\u1ed9p m\u1ed9t l\u1ea7n. H\u1ec7 th\u1ed1ng thay \u0111\u1ed5i, v\u00e0 c\u00e1c s\u01a1 \u0111\u1ed3 ph\u1ea3i thay \u0111\u1ed5i theo. Vi\u1ec7c b\u1ea3o tr\u00ec \u0111\u1ecbnh k\u1ef3 \u0111\u1ea3m b\u1ea3o t\u00e0i li\u1ec7u lu\u00f4n ch\u00ednh x\u00e1c.<\/p>\n

                            \n
                          • Ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n:<\/strong> Theo d\u00f5i c\u00e1c thay \u0111\u1ed5i. \u0110\u00e1nh d\u1ea5u s\u01a1 \u0111\u1ed3 b\u1eb1ng s\u1ed1 phi\u00ean b\u1ea3n ho\u1eb7c ng\u00e0y th\u00e1ng.<\/li>\n
                          • Y\u00eau c\u1ea7u thay \u0111\u1ed5i:<\/strong> Khi th\u00eam t\u00ednh n\u0103ng m\u1edbi, c\u1eadp nh\u1eadt DFD tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u l\u1eadp tr\u00ecnh.<\/li>\n
                          • V\u00f2ng ki\u1ec3m tra:<\/strong> L\u00ean l\u1ecbch ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 v\u1edbi c\u00e1c b\u00ean li\u00ean quan \u0111\u1ec3 x\u00e1c minh s\u01a1 \u0111\u1ed3 ph\u00f9 h\u1ee3p v\u1edbi ho\u1ea1t \u0111\u1ed9ng hi\u1ec7n t\u1ea1i.<\/li>\n
                          • T\u00edch h\u1ee3p:<\/strong> \u0110\u1ea3m b\u1ea3o DFD ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c t\u00e0i li\u1ec7u kh\u00e1c nh\u01b0 t\u00e0i li\u1ec7u y\u00eau c\u1ea7u v\u00e0 l\u01b0\u1ee3c \u0111\u1ed3 c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n

                            V\u00ed d\u1ee5 th\u1ef1c t\u1ebf: H\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed \ud83d\uded2<\/h2>\n

                            \u0110\u1ec3 minh h\u1ecda c\u00e1c kh\u00e1i ni\u1ec7m, h\u00e3y xem x\u00e9t m\u1ed9t c\u1eeda h\u00e0ng tr\u1ef1c tuy\u1ebfn. S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh s\u1ebd th\u1ec3 hi\u1ec7n \u201cKh\u00e1ch h\u00e0ng\u201d v\u00e0 \u201cC\u1ed5ng thanh to\u00e1n\u201d l\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i.<\/p>\n

                            Trong DFD c\u1ea5p \u0111\u1ed9 1, qu\u00e1 tr\u00ecnh h\u1ec7 th\u1ed1ng \u201cQu\u1ea3n l\u00fd \u0111\u01a1n h\u00e0ng\u201d \u0111\u01b0\u1ee3c chia th\u00e0nh:<\/p>\n

                              \n
                            • Quy tr\u00ecnh: \u201cNh\u1eadn \u0111\u01a1n h\u00e0ng\u201d<\/li>\n
                            • Quy tr\u00ecnh: \u201cX\u00e1c th\u1ef1c t\u1ed3n kho\u201d<\/li>\n
                            • Quy tr\u00ecnh: \u201cX\u1eed l\u00fd thanh to\u00e1n\u201d<\/li>\n
                            • Quy tr\u00ecnh: \u201cGiao h\u00e0ng\u201d<\/li>\n<\/ul>\n

                              C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u bao g\u1ed3m \u201cChi ti\u1ebft \u0111\u01a1n h\u00e0ng,\u201d \u201cKi\u1ec3m tra t\u1ed3n kho,\u201d v\u00e0 \u201cX\u00e1c nh\u1eadn.\u201d C\u00e1c kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u s\u1ebd bao g\u1ed3m \u201cDanh m\u1ee5c s\u1ea3n ph\u1ea9m\u201d v\u00e0 \u201cNh\u1eadt k\u00fd giao d\u1ecbch.\u201d Ph\u00e2n t\u00edch n\u00e0y \u0111\u1ea3m b\u1ea3o m\u1ecdi b\u01b0\u1edbc trong h\u00e0nh tr\u00ecnh c\u1ee7a kh\u00e1ch h\u00e0ng \u0111\u1ec1u \u0111\u01b0\u1ee3c ghi nh\u1eadn.<\/p>\n

                              Suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 vi\u1ec7c th\u00e0nh th\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \ud83c\udfaf<\/h2>\n

                              Vi\u1ec7c t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u00ean nh\u1eabn v\u00e0 ch\u00fa \u00fd \u0111\u1ebfn chi ti\u1ebft. \u0110\u00e2y l\u00e0 m\u1ed9t k\u1ef9 n\u0103ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n qua th\u1ef1c h\u00e0nh. B\u1eb1ng c\u00e1ch t\u1eadp trung v\u00e0o s\u1ef1 di chuy\u1ec3n c\u1ee7a d\u1eef li\u1ec7u thay v\u00ec logic, b\u1ea1n cung c\u1ea5p m\u1ed9t b\u1ea3n \u0111\u1ed3 r\u00f5 r\u00e0ng cho c\u1ea3 nh\u00e0 ph\u00e1t tri\u1ec3n l\u1eabn c\u00e1c b\u00ean li\u00ean quan. H\u00e3y nh\u1edb r\u1eb1ng m\u1ee5c ti\u00eau l\u00e0 s\u1ef1 r\u00f5 r\u00e0ng, ch\u1ee9 kh\u00f4ng ph\u1ea3i s\u1ef1 ph\u1ee9c t\u1ea1p. H\u00e3y gi\u1eef c\u00e1c s\u01a1 \u0111\u1ed3 \u0111\u01a1n gi\u1ea3n, nh\u1ea5t qu\u00e1n v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi th\u1ef1c t\u1ebf kinh doanh.<\/p>\n

                              Khi b\u1ea1n ti\u1ebfp t\u1ee5c c\u00f4ng vi\u1ec7c c\u1ee7a m\u00ecnh nh\u01b0 m\u1ed9t nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng, h\u00e3y s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c y\u00eau c\u1ea7u \u1ea9n v\u00e0 t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. Ch\u00fang v\u1eabn l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 \u0111\u00e1ng tin c\u1eady nh\u1ea5t \u0111\u1ec3 tr\u1ef1c quan h\u00f3a lu\u1ed3ng th\u00f4ng tin trong m\u00f4i tr\u01b0\u1eddng ph\u1ee9c t\u1ea1p.<\/p>\n","protected":false},"excerpt":{"rendered":"

                              S\u01a1 \u0111\u1ed3 Lu\u1ed3ng D\u1eef li\u1ec7u (DFD) l\u00e0 c\u00f4ng c\u1ee5 n\u1ec1n t\u1ea3ng cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c giao nhi\u1ec7m v\u1ee5 hi\u1ec3u r\u00f5, thi\u1ebft k\u1ebf v\u00e0 t\u00e0i li\u1ec7u h\u00f3a…<\/p>\n","protected":false},"author":1,"featured_media":1753,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"H\u01b0\u1edbng d\u1eabn nhanh v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng \ud83d\udcca","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 (DFD) cho ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. M\u1ed9t h\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf bao g\u1ed3m c\u00e1c c\u1ea5p \u0111\u1ed9, k\u00fd hi\u1ec7u v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t d\u00e0nh cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[96],"tags":[89,95],"class_list":["post-1752","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dfd","tag-academic","tag-dfd"],"yoast_head":"\nH\u01b0\u1edbng d\u1eabn nhanh v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng \ud83d\udcca<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1ch t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 (DFD) cho ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. M\u1ed9t h\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf bao g\u1ed3m c\u00e1c c\u1ea5p \u0111\u1ed9, k\u00fd hi\u1ec7u v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t d\u00e0nh cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch.\" \/>\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.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"H\u01b0\u1edbng d\u1eabn nhanh v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng \ud83d\udcca\" \/>\n<meta property=\"og:description\" content=\"H\u1ecdc c\u00e1ch t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 (DFD) cho ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. M\u1ed9t h\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf bao g\u1ed3m c\u00e1c c\u1ea5p \u0111\u1ed9, k\u00fd hi\u1ec7u v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t d\u00e0nh cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/\" \/>\n<meta property=\"og:site_name\" content=\"Viz Note Vietnamese - AI Insights & Software Industry Updates\" \/>\n<meta property=\"article:published_time\" content=\"2026-04-01T19:03:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.viz-note.com\/vi\/wp-content\/uploads\/sites\/10\/2026\/04\/kawaii-data-flow-diagram-systems-analysts-infographic.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=\"23 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/\"},\"author\":{\"name\":\"vpadmin\",\"@id\":\"https:\/\/www.viz-note.com\/vi\/#\/schema\/person\/d69595112293b803501f7b381be28255\"},\"headline\":\"H\u01b0\u1edbng d\u1eabn nhanh v\u1ec1 S\u01a1 \u0111\u1ed3 Lu\u1ed3ng D\u1eef li\u1ec7u cho c\u00e1c Nh\u00e0 ph\u00e2n t\u00edch H\u1ec7 th\u1ed1ng\",\"datePublished\":\"2026-04-01T19:03:03+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/\"},\"wordCount\":4570,\"publisher\":{\"@id\":\"https:\/\/www.viz-note.com\/vi\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.viz-note.com\/vi\/wp-content\/uploads\/sites\/10\/2026\/04\/kawaii-data-flow-diagram-systems-analysts-infographic.jpg\",\"keywords\":[\"academic\",\"dfd\"],\"articleSection\":[\"DFD\"],\"inLanguage\":\"vi\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/\",\"url\":\"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/\",\"name\":\"H\u01b0\u1edbng d\u1eabn nhanh v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng \ud83d\udcca\",\"isPartOf\":{\"@id\":\"https:\/\/www.viz-note.com\/vi\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.viz-note.com\/vi\/wp-content\/uploads\/sites\/10\/2026\/04\/kawaii-data-flow-diagram-systems-analysts-infographic.jpg\",\"datePublished\":\"2026-04-01T19:03:03+00:00\",\"description\":\"H\u1ecdc c\u00e1ch t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 (DFD) cho ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. M\u1ed9t h\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf bao g\u1ed3m c\u00e1c c\u1ea5p \u0111\u1ed9, k\u00fd hi\u1ec7u v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t d\u00e0nh cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/#breadcrumb\"},\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/#primaryimage\",\"url\":\"https:\/\/www.viz-note.com\/vi\/wp-content\/uploads\/sites\/10\/2026\/04\/kawaii-data-flow-diagram-systems-analysts-infographic.jpg\",\"contentUrl\":\"https:\/\/www.viz-note.com\/vi\/wp-content\/uploads\/sites\/10\/2026\/04\/kawaii-data-flow-diagram-systems-analysts-infographic.jpg\",\"width\":1664,\"height\":928},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.viz-note.com\/vi\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"H\u01b0\u1edbng d\u1eabn nhanh v\u1ec1 S\u01a1 \u0111\u1ed3 Lu\u1ed3ng D\u1eef li\u1ec7u cho c\u00e1c Nh\u00e0 ph\u00e2n t\u00edch H\u1ec7 th\u1ed1ng\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.viz-note.com\/vi\/#website\",\"url\":\"https:\/\/www.viz-note.com\/vi\/\",\"name\":\"Viz Note Vietnamese - AI Insights & Software Industry Updates\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/www.viz-note.com\/vi\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.viz-note.com\/vi\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"vi\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.viz-note.com\/vi\/#organization\",\"name\":\"Viz Note Vietnamese - AI Insights & Software Industry Updates\",\"url\":\"https:\/\/www.viz-note.com\/vi\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/www.viz-note.com\/vi\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.viz-note.com\/vi\/wp-content\/uploads\/sites\/10\/2025\/03\/cropped-viz-note-logo.png\",\"contentUrl\":\"https:\/\/www.viz-note.com\/vi\/wp-content\/uploads\/sites\/10\/2025\/03\/cropped-viz-note-logo.png\",\"width\":512,\"height\":512,\"caption\":\"Viz Note Vietnamese - AI Insights & Software Industry Updates\"},\"image\":{\"@id\":\"https:\/\/www.viz-note.com\/vi\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.viz-note.com\/vi\/#\/schema\/person\/d69595112293b803501f7b381be28255\",\"name\":\"vpadmin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/www.viz-note.com\/vi\/#\/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.viz-note.com\"],\"url\":\"https:\/\/www.viz-note.com\/vi\/author\/vpadmin\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"H\u01b0\u1edbng d\u1eabn nhanh v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng \ud83d\udcca","description":"H\u1ecdc c\u00e1ch t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 (DFD) cho ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. M\u1ed9t h\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf bao g\u1ed3m c\u00e1c c\u1ea5p \u0111\u1ed9, k\u00fd hi\u1ec7u v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t d\u00e0nh cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch.","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.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/","og_locale":"vi_VN","og_type":"article","og_title":"H\u01b0\u1edbng d\u1eabn nhanh v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng \ud83d\udcca","og_description":"H\u1ecdc c\u00e1ch t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 (DFD) cho ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. M\u1ed9t h\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf bao g\u1ed3m c\u00e1c c\u1ea5p \u0111\u1ed9, k\u00fd hi\u1ec7u v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t d\u00e0nh cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch.","og_url":"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/","og_site_name":"Viz Note Vietnamese - AI Insights & Software Industry Updates","article_published_time":"2026-04-01T19:03:03+00:00","og_image":[{"width":1664,"height":928,"url":"https:\/\/www.viz-note.com\/vi\/wp-content\/uploads\/sites\/10\/2026\/04\/kawaii-data-flow-diagram-systems-analysts-infographic.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":"23 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/#article","isPartOf":{"@id":"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/"},"author":{"name":"vpadmin","@id":"https:\/\/www.viz-note.com\/vi\/#\/schema\/person\/d69595112293b803501f7b381be28255"},"headline":"H\u01b0\u1edbng d\u1eabn nhanh v\u1ec1 S\u01a1 \u0111\u1ed3 Lu\u1ed3ng D\u1eef li\u1ec7u cho c\u00e1c Nh\u00e0 ph\u00e2n t\u00edch H\u1ec7 th\u1ed1ng","datePublished":"2026-04-01T19:03:03+00:00","mainEntityOfPage":{"@id":"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/"},"wordCount":4570,"publisher":{"@id":"https:\/\/www.viz-note.com\/vi\/#organization"},"image":{"@id":"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/#primaryimage"},"thumbnailUrl":"https:\/\/www.viz-note.com\/vi\/wp-content\/uploads\/sites\/10\/2026\/04\/kawaii-data-flow-diagram-systems-analysts-infographic.jpg","keywords":["academic","dfd"],"articleSection":["DFD"],"inLanguage":"vi"},{"@type":"WebPage","@id":"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/","url":"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/","name":"H\u01b0\u1edbng d\u1eabn nhanh v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng \ud83d\udcca","isPartOf":{"@id":"https:\/\/www.viz-note.com\/vi\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/#primaryimage"},"image":{"@id":"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/#primaryimage"},"thumbnailUrl":"https:\/\/www.viz-note.com\/vi\/wp-content\/uploads\/sites\/10\/2026\/04\/kawaii-data-flow-diagram-systems-analysts-infographic.jpg","datePublished":"2026-04-01T19:03:03+00:00","description":"H\u1ecdc c\u00e1ch t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 (DFD) cho ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. M\u1ed9t h\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf bao g\u1ed3m c\u00e1c c\u1ea5p \u0111\u1ed9, k\u00fd hi\u1ec7u v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t d\u00e0nh cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch.","breadcrumb":{"@id":"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/#breadcrumb"},"inLanguage":"vi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/"]}]},{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/#primaryimage","url":"https:\/\/www.viz-note.com\/vi\/wp-content\/uploads\/sites\/10\/2026\/04\/kawaii-data-flow-diagram-systems-analysts-infographic.jpg","contentUrl":"https:\/\/www.viz-note.com\/vi\/wp-content\/uploads\/sites\/10\/2026\/04\/kawaii-data-flow-diagram-systems-analysts-infographic.jpg","width":1664,"height":928},{"@type":"BreadcrumbList","@id":"https:\/\/www.viz-note.com\/vi\/quick-start-data-flow-diagrams-systems-analysts\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.viz-note.com\/vi\/"},{"@type":"ListItem","position":2,"name":"H\u01b0\u1edbng d\u1eabn nhanh v\u1ec1 S\u01a1 \u0111\u1ed3 Lu\u1ed3ng D\u1eef li\u1ec7u cho c\u00e1c Nh\u00e0 ph\u00e2n t\u00edch H\u1ec7 th\u1ed1ng"}]},{"@type":"WebSite","@id":"https:\/\/www.viz-note.com\/vi\/#website","url":"https:\/\/www.viz-note.com\/vi\/","name":"Viz Note Vietnamese - AI Insights & Software Industry Updates","description":"","publisher":{"@id":"https:\/\/www.viz-note.com\/vi\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.viz-note.com\/vi\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"vi"},{"@type":"Organization","@id":"https:\/\/www.viz-note.com\/vi\/#organization","name":"Viz Note Vietnamese - AI Insights & Software Industry Updates","url":"https:\/\/www.viz-note.com\/vi\/","logo":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/www.viz-note.com\/vi\/#\/schema\/logo\/image\/","url":"https:\/\/www.viz-note.com\/vi\/wp-content\/uploads\/sites\/10\/2025\/03\/cropped-viz-note-logo.png","contentUrl":"https:\/\/www.viz-note.com\/vi\/wp-content\/uploads\/sites\/10\/2025\/03\/cropped-viz-note-logo.png","width":512,"height":512,"caption":"Viz Note Vietnamese - AI Insights & Software Industry Updates"},"image":{"@id":"https:\/\/www.viz-note.com\/vi\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.viz-note.com\/vi\/#\/schema\/person\/d69595112293b803501f7b381be28255","name":"vpadmin","image":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/www.viz-note.com\/vi\/#\/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.viz-note.com"],"url":"https:\/\/www.viz-note.com\/vi\/author\/vpadmin\/"}]}},"_links":{"self":[{"href":"https:\/\/www.viz-note.com\/vi\/wp-json\/wp\/v2\/posts\/1752","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.viz-note.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.viz-note.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.viz-note.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.viz-note.com\/vi\/wp-json\/wp\/v2\/comments?post=1752"}],"version-history":[{"count":0,"href":"https:\/\/www.viz-note.com\/vi\/wp-json\/wp\/v2\/posts\/1752\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.viz-note.com\/vi\/wp-json\/wp\/v2\/media\/1753"}],"wp:attachment":[{"href":"https:\/\/www.viz-note.com\/vi\/wp-json\/wp\/v2\/media?parent=1752"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.viz-note.com\/vi\/wp-json\/wp\/v2\/categories?post=1752"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.viz-note.com\/vi\/wp-json\/wp\/v2\/tags?post=1752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}