{"id":4212,"date":"2026-03-24T19:47:07","date_gmt":"2026-03-24T19:47:07","guid":{"rendered":"https:\/\/www.diagrams-ai.com\/vn\/dfd-qa-new-analysts-guide\/"},"modified":"2026-03-24T19:47:07","modified_gmt":"2026-03-24T19:47:07","slug":"dfd-qa-new-analysts-guide","status":"publish","type":"post","link":"https:\/\/www.diagrams-ai.com\/vn\/dfd-qa-new-analysts-guide\/","title":{"rendered":"H\u1ecfi \u0111\u00e1p DFD: C\u00e2u tr\u1ea3 l\u1eddi cho 10 c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn nh\u1ea5t t\u1eeb c\u00e1c nh\u00e0 ph\u00e2n t\u00edch m\u1edbi"},"content":{"rendered":"

B\u01b0\u1edbc v\u00e0o l\u0129nh v\u1ef1c ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng mang theo m\u1ed9t l\u00e0n s\u00f3ng c\u00e1c kh\u00e1i ni\u1ec7m, thu\u1eadt ng\u1eef v\u00e0 s\u01a1 \u0111\u1ed3 m\u1edbi. Trong s\u1ed1 \u0111\u00f3, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) \u0111\u00f3ng vai tr\u00f2 n\u1ec1n t\u1ea3ng trong vi\u1ec7c tr\u1ef1c quan h\u00f3a c\u00e1ch th\u00f4ng tin di chuy\u1ec3n qua m\u1ed9t h\u1ec7 th\u1ed1ng. N\u00f3 cung c\u1ea5p b\u1ee9c tranh r\u00f5 r\u00e0ng v\u1ec1 c\u00e1c qu\u00e1 tr\u00ecnh, l\u01b0u tr\u1eef d\u1eef li\u1ec7u v\u00e0 t\u01b0\u01a1ng t\u00e1c b\u00ean ngo\u00e0i m\u00e0 kh\u00f4ng b\u1ecb sa \u0111\u00e0 v\u00e0o chi ti\u1ebft tri\u1ec3n khai k\u1ef9 thu\u1eadt. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u vai tr\u00f2 n\u00e0y, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c chi ti\u1ebft tinh t\u1ebf c\u00f3 th\u1ec3 l\u00e0 th\u00e1ch th\u1ee9c. H\u01b0\u1edbng d\u1eabn n\u00e0y gi\u1ea3i \u0111\u00e1p 10 c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p nh\u1ea5t t\u1eeb c\u00e1c nh\u00e0 ph\u00e2n t\u00edch m\u1edbi b\u1eaft \u0111\u1ea7u h\u00e0nh tr\u00ecnh v\u1edbi DFD. Ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 c\u00e1c \u0111\u1ecbnh ngh\u0129a, s\u1ef1 kh\u00e1c bi\u1ec7t v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1eb1m \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n truy\u1ec1n \u0111\u1ea1t hi\u1ec7u qu\u1ea3 v\u1edbi c\u00e1c b\u00ean li\u00ean quan v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n.<\/p>\n

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

1. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u th\u1ef1c s\u1ef1 l\u00e0 g\u00ec? \ud83c\udf10<\/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, v\u1ed1n m\u00f4 t\u1ea3 tr\u00ecnh t\u1ef1 c\u00e1c thao t\u00e1c ho\u1eb7c lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n, DFD t\u1eadp trung v\u00e0o s\u1ef1 di chuy\u1ec3n c\u1ee7a d\u1eef li\u1ec7u. N\u00f3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi: \u201cD\u1eef li\u1ec7u \u0111\u1ebfn t\u1eeb \u0111\u00e2u, \u0111i \u0111\u1ebfn \u0111\u00e2u v\u00e0 thay \u0111\u1ed5i nh\u01b0 th\u1ebf n\u00e0o d\u1ecdc \u0111\u01b0\u1eddng?\u201d S\u1ef1 tr\u1eebu t\u01b0\u1ee3ng n\u00e0y gi\u00fap c\u00e1c b\u00ean li\u00ean quan hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1c y\u00eau c\u1ea7u logic c\u1ee7a h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng c\u1ea7n bi\u1ebft ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh hay s\u01a1 \u0111\u1ed3 c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n

Nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh bao g\u1ed3m:<\/p>\n

    \n
  • T\u1eadp trung v\u00e0o logic:<\/strong> N\u00f3 m\u00f4 t\u1ea3 h\u1ec7 th\u1ed1ng l\u00e0m g\u00ec, ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00e1ch n\u00f3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng v\u1ec1 m\u1eb7t v\u1eadt l\u00fd.<\/li>\n
  • \u0110\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra:<\/strong> M\u1ed7i qu\u00e1 tr\u00ecnh \u0111\u1ec1u ph\u1ea3i c\u00f3 \u00edt nh\u1ea5t m\u1ed9t \u0111\u1ea7u v\u00e0o v\u00e0 m\u1ed9t \u0111\u1ea7u ra.<\/li>\n
  • T\u00ednh b\u1ec1n v\u1eefng c\u1ee7a d\u1eef li\u1ec7u:<\/strong> N\u00f3 ph\u00e2n bi\u1ec7t gi\u1eefa d\u1eef li\u1ec7u \u0111ang di chuy\u1ec3n v\u00e0 d\u1eef li\u1ec7u \u0111ang \u1edf tr\u1ea1ng th\u00e1i ngh\u1ec9.<\/li>\n
  • \u0110\u1ecbnh ngh\u0129a ranh gi\u1edbi:<\/strong> N\u00f3 ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng h\u1ec7 th\u1ed1ng v\u1edbi th\u1ebf gi\u1edbi b\u00ean ngo\u00e0i.<\/li>\n<\/ul>\n

    Hi\u1ec3u \u0111\u01b0\u1ee3c s\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng. Khi m\u1ed9t nh\u00e0 ph\u00e2n t\u00edch t\u1ea1o ra DFD, h\u1ecd \u0111ang t\u1ea1o b\u1ea3n \u0111\u1ed3 cho logic kinh doanh. B\u1ea3n \u0111\u1ed3 n\u00e0y \u0111\u00f3ng vai tr\u00f2 nh\u01b0 c\u00e2y c\u1ea7u n\u1ed1i gi\u1eefa y\u00eau c\u1ea7u kinh doanh v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u \u0111\u1ed3ng thu\u1eadn v\u1ec1 h\u00e0nh tr\u00ecnh d\u1eef li\u1ec7u tr\u01b0\u1edbc khi vi\u1ebft b\u1ea5t k\u1ef3 d\u00f2ng m\u00e3 n\u00e0o.<\/p>\n

    2. DFD kh\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 nh\u01b0 th\u1ebf n\u00e0o? \ud83d\udd04<\/h2>\n

    \u0110\u00e2y l\u00e0 m\u1ed9t \u0111i\u1ec3m g\u00e2y nh\u1ea7m l\u1eabn ph\u1ed5 bi\u1ebfn. M\u1eb7c d\u00f9 c\u1ea3 hai \u0111\u1ec1u s\u1eed d\u1ee5ng h\u00ecnh d\u1ea1ng v\u00e0 m\u0169i t\u00ean, nh\u01b0ng m\u1ee5c \u0111\u00edch c\u1ee7a ch\u00fang ho\u00e0n to\u00e0n kh\u00e1c nhau. S\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 minh h\u1ecda lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n c\u1ee7a m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh ho\u1eb7c quy tr\u00ecnh. N\u00f3 th\u1ec3 hi\u1ec7n c\u00e1c \u0111i\u1ec3m quy\u1ebft \u0111\u1ecbnh (c\u00f3\/kh\u00f4ng), v\u00f2ng l\u1eb7p v\u00e0 tr\u00ecnh t\u1ef1 ch\u00ednh x\u00e1c c\u1ee7a c\u00e1c b\u01b0\u1edbc. Th\u01b0\u1eddng th\u00ec n\u00f3 qu\u00e1 chi ti\u1ebft cho ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng \u1edf c\u1ea5p \u0111\u1ed9 cao.<\/p>\n

    Ng\u01b0\u1ee3c l\u1ea1i, DFD lo\u1ea1i b\u1ecf logic \u0111i\u1ec1u khi\u1ec3n. N\u00f3 kh\u00f4ng th\u1ec3 hi\u1ec7n v\u00f2ng l\u1eb7p hay nh\u00e1nh quy\u1ebft \u0111\u1ecbnh. Thay v\u00e0o \u0111\u00f3, n\u00f3 th\u1ec3 hi\u1ec7n s\u1ef1 bi\u1ebfn \u0111\u1ed5i c\u1ee7a d\u1eef li\u1ec7u. N\u1ebfu b\u1ea1n \u0111ang thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u, s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 c\u00f3 th\u1ec3 th\u1ec3 hi\u1ec7n logic truy v\u1ea5n. Trong khi \u0111\u00f3, DFD s\u1ebd th\u1ec3 hi\u1ec7n d\u1eef li\u1ec7u di chuy\u1ec3n t\u1eeb bi\u1ec3u m\u1eabu ng\u01b0\u1eddi d\u00f9ng v\u00e0o b\u1ea3ng c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/p>\n

    Nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t c\u1ea7n ghi nh\u1edb:<\/p>\n

      \n
    • \u0110i\u1ec1u khi\u1ec3n so v\u1edbi D\u1eef li\u1ec7u:<\/strong>S\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 t\u1eadp trung v\u00e0o \u0111i\u1ec1u khi\u1ec3n; DFD t\u1eadp trung v\u00e0o d\u1eef li\u1ec7u.<\/li>\n
    • Logic so v\u1edbi Bi\u1ebfn \u0111\u1ed5i:<\/strong>S\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 th\u1ec3 hi\u1ec7n logic quy\u1ebft \u0111\u1ecbnh; DFD th\u1ec3 hi\u1ec7n bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u.<\/li>\n
    • Tr\u1ea1ng th\u00e1i so v\u1edbi Qu\u00e1 tr\u00ecnh:<\/strong>S\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 theo d\u00f5i s\u1ef1 thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i h\u1ec7 th\u1ed1ng; DFD theo d\u00f5i s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n

      3. B\u1ed1n k\u00fd hi\u1ec7u c\u1ed1t l\u00f5i l\u00e0 g\u00ec? \ud83d\udcd0<\/h2>\n

      C\u00e1c DFD ti\u00eau chu\u1ea9n d\u1ef1a tr\u00ean b\u1ed1n k\u00fd hi\u1ec7u c\u1ee5 th\u1ec3 \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng. Vi\u1ec7c s\u1eed d\u1ee5ng ch\u00fang nh\u1ea5t qu\u00e1n s\u1ebd \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea5t k\u1ef3 ai \u0111\u1ecdc s\u01a1 \u0111\u1ed3 \u0111\u1ec1u hi\u1ec3u ngay l\u1eadp t\u1ee9c k\u00fd hi\u1ec7u \u0111\u00f3.<\/p>\n\n\n\n\n\n\n\n\n
      Tham chi\u1ebfu k\u00fd hi\u1ec7u DFD<\/caption>\n
      K\u00fd hi\u1ec7u<\/th>\nT\u00ean<\/th>\nCh\u1ee9c n\u0103ng<\/th>\nBi\u1ec3u di\u1ec5n tr\u1ef1c quan<\/th>\n<\/tr>\n<\/thead>\n
      M\u0169i t\u00ean<\/td>\nD\u00f2ng d\u1eef li\u1ec7u<\/td>\nHi\u1ec3n th\u1ecb s\u1ef1 di chuy\u1ec3n c\u1ee7a d\u1eef li\u1ec7u gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n<\/td>\n\u0110\u01b0\u1eddng c\u00f3 nh\u00e3n<\/td>\n<\/tr>\n
      H\u00ecnh tr\u00f2n ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt bo tr\u00f2n<\/td>\nQuy tr\u00ecnh<\/td>\nChuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o th\u00e0nh d\u1eef li\u1ec7u \u0111\u1ea7u ra<\/td>\nH\u00ecnh tr\u00f2n \/ H\u1ed9p<\/td>\n<\/tr>\n
      H\u00ecnh ch\u1eef nh\u1eadt m\u1edf<\/td>\nKho d\u1eef li\u1ec7u<\/td>\nL\u01b0u tr\u1eef d\u1eef li\u1ec7u \u0111\u1ec3 s\u1eed d\u1ee5ng sau n\u00e0y<\/td>\nHai \u0111\u01b0\u1eddng song song \/ H\u1ed9p<\/td>\n<\/tr>\n
      H\u00ecnh ch\u1eef nh\u1eadt<\/td>\nTh\u00e0nh ph\u1ea7n b\u00ean ngo\u00e0i<\/td>\nNgu\u1ed3n ho\u1eb7c \u0111\u00edch c\u1ee7a d\u1eef li\u1ec7u b\u00ean ngo\u00e0i h\u1ec7 th\u1ed1ng<\/td>\nH\u1ed9p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      M\u1ed7i k\u00fd hi\u1ec7u \u0111\u1ec1u c\u00f3 vai tr\u00f2 ri\u00eang bi\u1ec7t. Quy tr\u00ecnh thay \u0111\u1ed5i d\u1eef li\u1ec7u. Kho d\u1eef li\u1ec7u l\u01b0u tr\u1eef n\u00f3. Th\u00e0nh ph\u1ea7n b\u00ean ngo\u00e0i cung c\u1ea5p ho\u1eb7c ti\u00eau th\u1ee5 n\u00f3. D\u00f2ng d\u1eef li\u1ec7u k\u1ebft n\u1ed1i ch\u00fang l\u1ea1i v\u1edbi nhau. Vi\u1ec7c nh\u1ea7m l\u1eabn c\u00e1c k\u00fd hi\u1ec7u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn hi\u1ec3u l\u1ea7m nghi\u00eam tr\u1ecdng trong giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n.<\/p>\n

      4. C\u00e1c m\u1ee9c \u0111\u1ed9 c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 g\u00ec? \ud83d\udcda<\/h2>\n

      C\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi c\u00e1c m\u1ee9c \u0111\u1ed9 chi ti\u1ebft kh\u00e1c nhau \u0111\u1ec3 v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c t\u00ednh d\u1ec5 hi\u1ec3u. Ch\u00fang ta th\u01b0\u1eddng chia s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u th\u00e0nh ba m\u1ee9c ph\u00e2n c\u1ea5p. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cph\u00e2n r\u00e3\u201d ho\u1eb7c \u201cn\u1ed5 tung\u201d s\u01a1 \u0111\u1ed3.<\/p>\n

        \n
      1. S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh (M\u1ee9c 0):<\/strong> \u0110\u00e2y l\u00e0 m\u1ee9c cao nh\u1ea5t. N\u00f3 th\u1ec3 hi\u1ec7n to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng nh\u01b0 m\u1ed9t quy tr\u00ecnh duy nh\u1ea5t. N\u00f3 minh h\u1ecda ranh gi\u1edbi h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n b\u00ean ngo\u00e0i t\u01b0\u01a1ng t\u00e1c v\u1edbi n\u00f3. N\u00f3 cung c\u1ea5p c\u00e1i nh\u00ecn t\u1ed5ng quan.<\/li>\n
      2. S\u01a1 \u0111\u1ed3 m\u1ee9c 1:<\/strong> \u0110\u00e2y chia quy tr\u00ecnh duy nh\u1ea5t trong s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh th\u00e0nh c\u00e1c ti\u1ec3u quy tr\u00ecnh ch\u00ednh. N\u00f3 th\u1ec3 hi\u1ec7n c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u ch\u00ednh gi\u1eefa c\u00e1c ti\u1ec3u quy tr\u00ecnh n\u00e0y v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n b\u00ean ngo\u00e0i.<\/li>\n
      3. S\u01a1 \u0111\u1ed3 m\u1ee9c 2:<\/strong> \u0110\u00e2y ph\u00e2n r\u00e3 c\u00e1c ti\u1ec3u quy tr\u00ecnh c\u1ee5 th\u1ec3 t\u1eeb m\u1ee9c 1 th\u00e0nh c\u00e1c b\u01b0\u1edbc chi ti\u1ebft h\u01a1n. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng cho c\u00e1c khu v\u1ef1c ph\u1ee9c t\u1ea1p c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t k\u1ef9 l\u01b0\u1ee1ng.<\/li>\n<\/ol>\n

        M\u1ed7i m\u1ee9c ph\u1ea3i duy tr\u00ec t\u00ednh nh\u1ea5t qu\u00e1n v\u1edbi m\u1ee9c ph\u00eda tr\u00ean. B\u1ea1n kh\u00f4ng th\u1ec3 \u0111\u01b0a v\u00e0o c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u m\u1edbi \u1edf m\u1ee9c th\u1ea5p h\u01a1n n\u1ebfu ch\u00fang kh\u00f4ng xu\u1ea5t hi\u1ec7n \u1edf m\u1ee9c cao h\u01a1n, tr\u1eeb khi ch\u00fang \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng \u0111\u00fang c\u00e1ch.<\/p>\n

        5. C\u00e2n b\u1eb1ng trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 g\u00ec? \u2696\ufe0f<\/h2>\n

        C\u00e2n b\u1eb1ng l\u00e0 m\u1ed9t quy t\u1eafc quan tr\u1ecdng \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n \u1edf c\u00e1c m\u1ee9c kh\u00e1c nhau. N\u00f3 n\u00eau r\u1eb1ng \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a m\u1ed9t quy tr\u00ecnh cha ph\u1ea3i kh\u1edbp v\u1edbi \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a c\u00e1c quy tr\u00ecnh con b\u00ean d\u01b0\u1edbi n\u00f3. N\u1ebfu m\u1ed9t quy tr\u00ecnh m\u1ee9c 1 c\u00f3 \u0111\u1ea7u v\u00e0o l\u00e0 \u201cM\u00e3 ng\u01b0\u1eddi d\u00f9ng\u201d, s\u01a1 \u0111\u1ed3 m\u1ee9c 2 ph\u00e2n r\u00e3 quy tr\u00ecnh \u0111\u00f3 c\u0169ng ph\u1ea3i hi\u1ec3n th\u1ecb \u201cM\u00e3 ng\u01b0\u1eddi d\u00f9ng\u201d \u0111i v\u00e0o c\u00e1c ti\u1ec3u quy tr\u00ecnh.<\/p>\n

        Vi ph\u1ea1m quy t\u1eafc c\u00e2n b\u1eb1ng s\u1ebd g\u00e2y nh\u1ea7m l\u1eabn. N\u00f3 ng\u1ee5 \u00fd r\u1eb1ng d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c t\u1ea1o ra ho\u1eb7c ti\u00eau h\u1ee7y m\u1ed9t c\u00e1ch k\u1ef3 di\u1ec7u, \u0111i\u1ec1u n\u00e0y l\u00e0 kh\u00f4ng th\u1ec3 x\u1ea3y ra trong m\u1ed9t h\u1ec7 th\u1ed1ng logic. Khi xem x\u00e9t m\u1ed9t s\u01a1 \u0111\u1ed3, h\u00e3y lu\u00f4n ki\u1ec3m tra c\u00e1c c\u1ea1nh. N\u1ebfu m\u1ed9t \u0111\u01b0\u1eddng \u0111i v\u00e0o m\u1ed9t h\u1ed9p \u1edf m\u1ee9c 1, \u0111\u01b0\u1eddng \u0111\u00f3 ph\u1ea3i xu\u1ea5t hi\u1ec7n trong s\u01a1 \u0111\u1ed3 m\u1ee9c 2 t\u01b0\u01a1ng \u1ee9ng.<\/p>\n

        T\u1ea1i sao \u0111i\u1ec1u n\u00e0y quan tr\u1ecdng:<\/p>\n

          \n
        • Kh\u1ea3 n\u0103ng truy xu\u1ea5t ngu\u1ed3n g\u1ed1c:<\/strong>B\u1ea1n c\u00f3 th\u1ec3 truy xu\u1ea5t t\u1eebng ph\u1ea7n d\u1eef li\u1ec7u t\u1eeb c\u1ea5p \u0111\u1ed9 cao nh\u1ea5t xu\u1ed1ng chi ti\u1ebft.<\/li>\n
        • T\u00ednh \u0111\u1ea7y \u0111\u1ee7:<\/strong>N\u00f3 \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 y\u00eau c\u1ea7u n\u00e0o b\u1ecb b\u1ecf s\u00f3t trong qu\u00e1 tr\u00ecnh ph\u00e2n r\u00e3.<\/li>\n
        • T\u00ednh ch\u00ednh x\u00e1c:<\/strong>N\u00f3 ng\u0103n ch\u1eb7n vi\u1ec7c \u0111\u01b0a v\u00e0o c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u \u1ea3o.<\/li>\n<\/ul>\n

          6. C\u00e1c quy t\u1eafc \u0111\u1eb7t t\u00ean cho qu\u00e1 tr\u00ecnh l\u00e0 g\u00ec? \ud83c\udff7\ufe0f<\/h2>\n

          T\u00ean kh\u00f4ng ch\u1ec9 l\u00e0 nh\u00e3n d\u00e1n; ch\u00fang l\u00e0 t\u00e0i li\u1ec7u m\u00f4 t\u1ea3. T\u00ean c\u1ee7a m\u1ed9t qu\u00e1 tr\u00ecnh n\u00ean l\u00e0 m\u1ed9t \u0111\u1ed9ng t\u1eeb \u0111i k\u00e8m theo m\u1ed9t danh t\u1eeb. V\u00ed d\u1ee5, \u201cT\u00ednh thu\u1ebf\u201d t\u1ed1t h\u01a1n \u201cT\u00ednh to\u00e1n thu\u1ebf\u201d. \u0110\u1ed9ng t\u1eeb th\u1ec3 hi\u1ec7n h\u00e0nh \u0111\u1ed9ng ho\u1eb7c s\u1ef1 bi\u1ebfn \u0111\u1ed5i, trong khi danh t\u1eeb ch\u1ec9 ch\u1ee7 th\u1ec3 li\u00ean quan.<\/p>\n

          Nh\u1eefng l\u1ed7i \u0111\u1eb7t t\u00ean ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n

            \n
          • T\u00ean ch\u1ec9 g\u1ed3m danh t\u1eeb:<\/strong> \u201cM\u00e0n h\u00ecnh \u0111\u0103ng nh\u1eadp\u201d m\u00f4 t\u1ea3 m\u1ed9t giao di\u1ec7n, ch\u1ee9 kh\u00f4ng ph\u1ea3i m\u1ed9t qu\u00e1 tr\u00ecnh. \u201cX\u00e1c th\u1ef1c \u0111\u0103ng nh\u1eadp\u201d m\u00f4 t\u1ea3 h\u00e0nh \u0111\u1ed9ng.<\/li>\n
          • T\u00ean chung chung:<\/strong> \u201cX\u1eed l\u00fd d\u1eef li\u1ec7u\u201d qu\u00e1 m\u01a1 h\u1ed3. \u201cX\u1eed l\u00fd d\u1eef li\u1ec7u h\u00f3a \u0111\u01a1n\u201d l\u00e0 c\u1ee5 th\u1ec3 h\u01a1n.<\/li>\n
          • Thu\u1eadt ng\u1eef k\u1ef9 thu\u1eadt:<\/strong>Tr\u00e1nh d\u00f9ng c\u00e1c thu\u1eadt ng\u1eef c\u01a1 s\u1edf d\u1eef li\u1ec7u nh\u01b0 \u201cC\u1eadp nh\u1eadt b\u1ea3ng\u201d hay \u201cTruy v\u1ea5n API\u201d. H\u00e3y d\u00f9ng c\u00e1c thu\u1eadt ng\u1eef kinh doanh nh\u01b0 \u201cC\u1eadp nh\u1eadt \u0111\u01a1n h\u00e0ng\u201d hay \u201cKi\u1ec3m tra kh\u1ea3 d\u1ee5ng\u201d. \u0110i\u1ec1u n\u00e0y gi\u00fap s\u01a1 \u0111\u1ed3 d\u1ec5 ti\u1ebfp c\u1eadn v\u1edbi c\u00e1c b\u00ean li\u00ean quan kh\u00f4ng ph\u1ea3i chuy\u00ean gia k\u1ef9 thu\u1eadt.<\/li>\n<\/ul>\n

            T\u00ednh nh\u1ea5t qu\u00e1n trong \u0111\u1eb7t t\u00ean gi\u00fap c\u00e1c nh\u00e0 ph\u00e2n t\u00edch nhanh ch\u00f3ng quan s\u00e1t s\u01a1 \u0111\u1ed3 v\u00e0 hi\u1ec3u ch\u1ee9c n\u0103ng c\u1ee7a t\u1eebng th\u00e0nh ph\u1ea7n m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u1ebfn ch\u00fa th\u00edch.<\/p>\n

            7. S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa Kho d\u1eef li\u1ec7u v\u00e0 C\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 g\u00ec? \ud83d\uddc4\ufe0f<\/h2>\n

            Trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD), Kho d\u1eef li\u1ec7u \u0111\u1ea1i di\u1ec7n cho n\u01a1i l\u01b0u tr\u1eef d\u1eef li\u1ec7u. \u0110\u00e2y l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m logic. Trong h\u1ec7 th\u1ed1ng v\u1eadt l\u00fd, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t b\u1ea3ng SQL, m\u1ed9t t\u1ec7p ph\u1eb3ng, m\u1ed9t b\u1ea3ng t\u00ednh hay m\u1ed9t kho l\u01b0u tr\u1eef \u0111\u00e1m m\u00e2y. DFD kh\u00f4ng quan t\u00e2m \u0111\u1ebfn c\u00f4ng ngh\u1ec7 tri\u1ec3n khai.<\/p>\n

            Tuy nhi\u00ean, m\u1ed9t sai l\u1ea7m ph\u1ed5 bi\u1ebfn l\u00e0 coi Kho d\u1eef li\u1ec7u nh\u01b0 m\u1ed9t b\u1ed9 \u0111\u1ec7m t\u1ea1m th\u1eddi. Kho d\u1eef li\u1ec7u ph\u1ea3i t\u1ed3n t\u1ea1i l\u00e2u d\u00e0i. N\u1ebfu h\u1ec7 th\u1ed1ng t\u1eaft, d\u1eef li\u1ec7u v\u1eabn \u0111\u01b0\u1ee3c gi\u1eef l\u1ea1i. \u0110i\u1ec1u n\u00e0y ph\u00e2n bi\u1ec7t n\u00f3 v\u1edbi c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u t\u1ea1m th\u1eddi.<\/p>\n

            Khi thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng v\u1eadt l\u00fd sau n\u00e0y, nh\u00e0 ph\u00e2n t\u00edch ho\u1eb7c ki\u1ebfn tr\u00fac s\u01b0 ph\u1ea3i \u00e1nh x\u1ea1 t\u1eebng Kho d\u1eef li\u1ec7u sang m\u1ed9t gi\u1ea3i ph\u00e1p l\u01b0u tr\u1eef v\u1eadt l\u00fd. N\u1ebfu m\u1ed9t Kho d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c g\u00e1n nh\u00e3n l\u00e0 \u201cD\u1eef li\u1ec7u kh\u00e1ch h\u00e0ng\u201d, \u0111\u1ed9i c\u01a1 s\u1edf d\u1eef li\u1ec7u s\u1ebd bi\u1ebft ph\u1ea3i t\u1ea1o m\u1ed9t b\u1ea3ng theo c\u1ea5u tr\u00fac \u0111\u00f3. N\u1ebfu DFD ng\u1ee5 \u00fd r\u1eb1ng kh\u00f4ng c\u1ea7n l\u01b0u tr\u1eef cho m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee5 th\u1ec3, th\u00ec kh\u00f4ng n\u00ean t\u1ea1o b\u1ea3ng c\u01a1 s\u1edf d\u1eef li\u1ec7u cho n\u00f3.<\/p>\n

            8. Ai \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i? \ud83d\udc65<\/h2>\n

            C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i l\u00e0 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 \u0111ang \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh h\u00f3a nh\u01b0ng n\u1eb1m ngo\u00e0i ranh gi\u1edbi c\u1ee7a n\u00f3. Ch\u00fang l\u00e0 ngu\u1ed3n ho\u1eb7c \u0111\u00edch c\u1ee7a d\u1eef li\u1ec7u.<\/p>\n

            V\u00ed d\u1ee5 bao g\u1ed3m:<\/p>\n

              \n
            • Ng\u01b0\u1eddi th\u1ef1c hi\u1ec7n:<\/strong>Kh\u00e1ch h\u00e0ng, Qu\u1ea3n tr\u1ecb vi\u00ean, Nh\u00e2n vi\u00ean.<\/li>\n
            • T\u1ed5 ch\u1ee9c:<\/strong>Nh\u00e0 cung c\u1ea5p, C\u01a1 quan ch\u00ednh ph\u1ee7, Ng\u00e2n h\u00e0ng.<\/li>\n
            • C\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c:<\/strong>C\u00e1c c\u1ed5ng thanh to\u00e1n, H\u1ec7 th\u1ed1ng c\u0169, D\u1ecbch v\u1ee5 API.<\/li>\n<\/ul>\n

              \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i ph\u00e2n bi\u1ec7t r\u00f5 gi\u1eefa m\u1ed9t th\u1ef1c th\u1ec3 b\u00ean trong h\u1ec7 th\u1ed1ng v\u00e0 m\u1ed9t th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. N\u1ebfu m\u1ed9t th\u00e0nh ph\u1ea7n l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a logic n\u1ed9i b\u1ed9 h\u1ec7 th\u1ed1ng, n\u00f3 n\u00ean l\u00e0 m\u1ed9t Quy tr\u00ecnh ho\u1eb7c Kho d\u1eef li\u1ec7u. N\u1ebfu n\u00f3 n\u1eb1m b\u00ean ngo\u00e0i ranh gi\u1edbi, th\u00ec \u0111\u00f3 l\u00e0 m\u1ed9t Th\u1ef1c th\u1ec3. Vi\u1ec7c nh\u1ea7m l\u1eabn gi\u1eefa ch\u00fang c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn m\u1edf r\u1ed9ng ph\u1ea1m vi, khi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n b\u1ecb y\u00eau c\u1ea7u x\u00e2y d\u1ef1ng c\u00e1c th\u00e0nh ph\u1ea7n thu\u1ed9c v\u1ec1 c\u00e1c h\u1ec7 th\u1ed1ng b\u00ean th\u1ee9 ba.<\/p>\n

              9. Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh l\u00e0 g\u00ec? \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. Vi\u1ec7c nh\u1eadn di\u1ec7n s\u1edbm nh\u1eefng \u0111i\u1ec3m nguy hi\u1ec3m ph\u1ed5 bi\u1ebfn n\u00e0y c\u00f3 th\u1ec3 gi\u00fap ti\u1ebft ki\u1ec7m c\u00f4ng s\u1ee9c s\u1eeda ch\u1eefa \u0111\u00e1ng k\u1ec3 sau n\u00e0y. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p nh\u1ea5t trong c\u00e1c b\u1ea3n nh\u00e1p ban \u0111\u1ea7u.<\/p>\n

                \n
              • C\u00e1c quy tr\u00ecnh \u0111\u00f3i b\u1ee5ng:<\/strong> M\u1ed9t quy tr\u00ecnh c\u00f3 \u0111\u1ea7u ra nh\u01b0ng kh\u00f4ng c\u00f3 \u0111\u1ea7u v\u00e0o. \u0110i\u1ec1u n\u00e0y ng\u1ee5 \u00fd r\u1eb1ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb kh\u00f4ng c\u00f3 g\u00ec.<\/li>\n
              • C\u00e1c h\u1ed1 \u0111en:<\/strong> M\u1ed9t quy tr\u00ecnh c\u00f3 \u0111\u1ea7u v\u00e0o nh\u01b0ng kh\u00f4ng c\u00f3 \u0111\u1ea7u ra. \u0110i\u1ec1u n\u00e0y ng\u1ee5 \u00fd r\u1eb1ng d\u1eef li\u1ec7u \u0111ang bi\u1ebfn m\u1ea5t v\u00e0o m\u1ed9t kho\u1ea3ng tr\u1ed1ng v\u00f4 h\u00ecnh.<\/li>\n
              • S\u1ef1 h\u00ecnh th\u00e0nh t\u1ef1 ph\u00e1t:<\/strong> M\u1ed9t quy tr\u00ecnh t\u1ea1o d\u1eef li\u1ec7u m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u1ea7u v\u00e0o hay t\u01b0\u01a1ng t\u00e1c n\u00e0o. M\u1ecdi d\u1eef li\u1ec7u \u0111\u1ec1u ph\u1ea3i \u0111\u1ebfn t\u1eeb \u0111\u00e2u \u0111\u00f3.<\/li>\n
              • D\u00f2ng d\u1eef li\u1ec7u tr\u1ef1c ti\u1ebfp gi\u1eefa hai th\u1ef1c th\u1ec3:<\/strong> D\u1eef li\u1ec7u kh\u00f4ng n\u00ean 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. N\u1ebfu Th\u1ef1c th\u1ec3 A g\u1eedi d\u1eef li\u1ec7u cho Th\u1ef1c th\u1ec3 B, th\u00ec d\u1eef li\u1ec7u ph\u1ea3i \u0111i qua c\u00e1c quy tr\u00ecnh c\u1ee7a h\u1ec7 th\u1ed1ng tr\u01b0\u1edbc.<\/li>\n
              • C\u00e1c m\u1ee9c \u0111\u1ed9 ch\u1ed3ng l\u1ea5n:<\/strong> Tr\u1ed9n l\u1eabn c\u00e1c chi ti\u1ebft c\u1ea5p cao v\u00e0 c\u1ea5p th\u1ea5p tr\u00ean c\u00f9ng m\u1ed9t s\u01a1 \u0111\u1ed3. Gi\u1eef c\u00e1c m\u1ee9c \u0111\u1ed9 ri\u00eang bi\u1ec7t \u0111\u1ec3 duy tr\u00ec s\u1ef1 r\u00f5 r\u00e0ng.<\/li>\n<\/ul>\n

                Xem x\u00e9t l\u1ea1i c\u00e1c s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n d\u1ef1a tr\u00ean danh s\u00e1ch ki\u1ec3m tra n\u00e0y c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a ch\u00fang tr\u01b0\u1edbc khi tr\u00ecnh b\u00e0y cho c\u00e1c b\u00ean li\u00ean quan.<\/p>\n

                10. T\u00f4i ph\u1ea3i duy tr\u00ec s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u theo th\u1eddi gian nh\u01b0 th\u1ebf n\u00e0o? \ud83d\udd04<\/h2>\n

                M\u1ed9t s\u01a1 \u0111\u1ed3 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t t\u00e0i li\u1ec7u t\u0129nh; n\u00f3 l\u00e0 m\u1ed9t t\u00e0i li\u1ec7u s\u1ed1ng. Khi y\u00eau c\u1ea7u kinh doanh thay \u0111\u1ed5i, h\u1ec7 th\u1ed1ng ph\u1ea3i ti\u1ebfn h\u00f3a theo. N\u1ebfu quy tr\u00ecnh ‘T\u00ednh chi\u1ebft kh\u1ea5u’ thay \u0111\u1ed5i th\u00e0nh ‘\u00c1p d\u1ee5ng chi\u1ebft kh\u1ea5u theo b\u1eadc’, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u ph\u1ea3i \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt. Vi\u1ec7c kh\u00f4ng c\u1eadp nh\u1eadt s\u01a1 \u0111\u1ed3 s\u1ebd d\u1eabn \u0111\u1ebfn s\u1ef1 t\u00e1ch r\u1eddi gi\u1eefa t\u00e0i li\u1ec7u v\u00e0 ph\u1ea7n m\u1ec1m th\u1ef1c t\u1ebf.<\/p>\n

                C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t cho vi\u1ec7c b\u1ea3o tr\u00ec bao g\u1ed3m:<\/p>\n

                  \n
                • Ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n:<\/strong> Theo d\u00f5i c\u00e1c thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi c\u00e1c t\u1ec7p s\u01a1 \u0111\u1ed3.<\/li>\n
                • Qu\u1ea3n l\u00fd thay \u0111\u1ed5i:<\/strong> Ch\u1ec9 c\u1eadp nh\u1eadt s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u khi thay \u0111\u1ed5i y\u00eau c\u1ea7u \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t.<\/li>\n
                • \u0110\u00e1nh gi\u00e1 \u0111\u1ecbnh k\u1ef3:<\/strong> L\u00ean l\u1ecbch \u0111\u00e1nh gi\u00e1 \u0111\u1ecbnh k\u1ef3 v\u1edbi c\u00e1c b\u00ean li\u00ean quan \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 v\u1eabn ph\u1ea3n \u00e1nh \u0111\u00fang th\u1ef1c t\u1ebf.<\/li>\n
                • Li\u00ean k\u1ebft t\u00e0i li\u1ec7u:<\/strong> Li\u00ean k\u1ebft s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u1edbi c\u00e1c t\u00e0i li\u1ec7u y\u00eau c\u1ea7u \u0111\u1ec3 c\u00e1c thay \u0111\u1ed5i \u1edf m\u1ed9t n\u01a1i \u0111\u01b0\u1ee3c ph\u1ea3n \u00e1nh \u1edf n\u01a1i kia.<\/li>\n<\/ul>\n

                  Xem s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u nh\u01b0 m\u1ed9t t\u00e0i li\u1ec7u tham kh\u1ea3o c\u1ea7n \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt th\u01b0\u1eddng xuy\u00ean \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 nh\u00e0 ph\u00e2n t\u00edch t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 hi\u1ec3u h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ee5 thu\u1ed9c ho\u00e0n to\u00e0n v\u00e0o tr\u00ed nh\u1edb hay c\u00e1c ghi ch\u00fa l\u1ed7i th\u1eddi.<\/p>\n

                  T\u00f3m t\u1eaft c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \ud83d\udee1\ufe0f<\/h2>\n

                  \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n th\u1ef1c hi\u1ec7n \u0111\u00fang m\u1ee5c \u0111\u00edch, h\u00e3y tu\u00e2n th\u1ee7 c\u00e1c nguy\u00ean t\u1eafc c\u1ed1t l\u00f5i n\u00e0y. S\u1ef1 r\u00f5 r\u00e0ng l\u00e0 m\u1ee5c ti\u00eau h\u00e0ng \u0111\u1ea7u. N\u1ebfu m\u1ed9t b\u00ean li\u00ean quan kh\u00f4ng th\u1ec3 hi\u1ec3u lu\u1ed3ng d\u1eef li\u1ec7u ch\u1ec9 sau m\u1ed9t c\u00e1i nh\u00ecn nhanh, s\u01a1 \u0111\u1ed3 \u0111\u00e3 th\u1ea5t b\u1ea1i nhi\u1ec7m v\u1ee5 c\u1ee7a m\u00ecnh. S\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n m\u1ed9t c\u00e1ch nh\u1ea5t qu\u00e1n. Gi\u1eef c\u00e1c m\u1ee9c \u0111\u1ed9 ri\u00eang bi\u1ec7t. \u0110\u1eb7t t\u00ean cho c\u00e1c quy tr\u00ecnh m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng. C\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra. V\u00e0 lu\u00f4n nh\u1edb r\u1eb1ng s\u01a1 \u0111\u1ed3 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 giao ti\u1ebfp, ch\u1ee9 kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt.<\/p>\n

                  B\u1eb1ng c\u00e1ch n\u1eafm v\u1eefng nh\u1eefng kh\u00e1i ni\u1ec7m n\u1ec1n t\u1ea3ng n\u00e0y, b\u1ea1n s\u1ebd x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p. B\u1ea1n cung c\u1ea5p m\u1ed9t b\u1ea3n \u0111\u1ed3 r\u00f5 r\u00e0ng cho c\u00e1c \u0111\u1ed9i ph\u00e1t tri\u1ec3n v\u00e0 m\u1ed9t c\u00e1i nh\u00ecn r\u00f5 r\u00e0ng v\u1ec1 y\u00eau c\u1ea7u cho c\u00e1c nh\u00e0 l\u00e3nh \u0111\u1ea1o kinh doanh. S\u1ef1 hi\u1ec3u bi\u1ebft chung n\u00e0y l\u00e0 ch\u00eca kh\u00f3a cho vi\u1ec7c tri\u1ec3n khai h\u1ec7 th\u1ed1ng th\u00e0nh c\u00f4ng.<\/p>\n

                  H\u00e3y nh\u1edb, gi\u00e1 tr\u1ecb c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u n\u1eb1m \u1edf kh\u1ea3 n\u0103ng \u0111\u01a1n gi\u1ea3n h\u00f3a s\u1ef1 ph\u1ee9c t\u1ea1p. N\u00f3 gi\u00fap b\u1ea1n nh\u00ecn th\u1ea5y c\u1ea3 khu r\u1eebng v\u00e0 t\u1eebng c\u00e2y m\u1ed9t c\u00f9ng l\u00fac. S\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 \u0111\u1ecbnh h\u01b0\u1edbng ph\u00e2n t\u00edch c\u1ee7a b\u1ea1n, x\u00e1c minh c\u00e1c y\u00eau c\u1ea7u v\u00e0 truy\u1ec1n \u0111\u1ea1t t\u1ea7m nh\u00ecn c\u1ee7a b\u1ea1n. V\u1edbi th\u1ef1c h\u00e0nh, vi\u1ec7c t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y s\u1ebd tr\u1edf th\u00e0nh m\u1ed9t ph\u1ea7n t\u1ef1 nhi\u00ean trong quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ee7a b\u1ea1n, gi\u00fap b\u1ea1n v\u01b0\u1ee3t qua nh\u1eefng chi ti\u1ebft ph\u1ee9c t\u1ea1p trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng m\u1ed9t c\u00e1ch t\u1ef1 tin.<\/p>\n","protected":false},"excerpt":{"rendered":"

                  B\u01b0\u1edbc v\u00e0o l\u0129nh v\u1ef1c ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng mang theo m\u1ed9t l\u00e0n s\u00f3ng c\u00e1c kh\u00e1i ni\u1ec7m, thu\u1eadt ng\u1eef v\u00e0 s\u01a1 \u0111\u1ed3 m\u1edbi. Trong s\u1ed1 \u0111\u00f3, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) \u0111\u00f3ng vai tr\u00f2 n\u1ec1n t\u1ea3ng trong vi\u1ec7c tr\u1ef1c quan h\u00f3a c\u00e1ch th\u00f4ng tin di chuy\u1ec3n qua m\u1ed9t h\u1ec7 th\u1ed1ng. N\u00f3 cung c\u1ea5p b\u1ee9c tranh r\u00f5 r\u00e0ng v\u1ec1 c\u00e1c qu\u00e1 tr\u00ecnh, l\u01b0u tr\u1eef d\u1eef li\u1ec7u v\u00e0 t\u01b0\u01a1ng t\u00e1c b\u00ean ngo\u00e0i m\u00e0 kh\u00f4ng b\u1ecb sa \u0111\u00e0 v\u00e0o chi ti\u1ebft tri\u1ec3n khai k\u1ef9 thu\u1eadt. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u vai tr\u00f2 n\u00e0y, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c chi ti\u1ebft tinh t\u1ebf c\u00f3 th\u1ec3 l\u00e0 th\u00e1ch th\u1ee9c. H\u01b0\u1edbng d\u1eabn n\u00e0y gi\u1ea3i \u0111\u00e1p 10 c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p nh\u1ea5t t\u1eeb c\u00e1c nh\u00e0 ph\u00e2n t\u00edch m\u1edbi b\u1eaft \u0111\u1ea7u h\u00e0nh tr\u00ecnh v\u1edbi DFD. Ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 c\u00e1c \u0111\u1ecbnh ngh\u0129a, s\u1ef1 kh\u00e1c bi\u1ec7t v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1eb1m \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n truy\u1ec1n \u0111\u1ea1t hi\u1ec7u qu\u1ea3 v\u1edbi c\u00e1c b\u00ean li\u00ean quan v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n. 1. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u th\u1ef1c s\u1ef1 l\u00e0 g\u00ec? \ud83c\udf10 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, v\u1ed1n m\u00f4 t\u1ea3 tr\u00ecnh t\u1ef1 c\u00e1c thao t\u00e1c ho\u1eb7c lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n, DFD t\u1eadp trung v\u00e0o s\u1ef1 di chuy\u1ec3n c\u1ee7a d\u1eef li\u1ec7u. N\u00f3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi: \u201cD\u1eef li\u1ec7u \u0111\u1ebfn t\u1eeb \u0111\u00e2u, \u0111i \u0111\u1ebfn \u0111\u00e2u v\u00e0 thay \u0111\u1ed5i nh\u01b0 th\u1ebf n\u00e0o d\u1ecdc \u0111\u01b0\u1eddng?\u201d S\u1ef1 tr\u1eebu t\u01b0\u1ee3ng n\u00e0y gi\u00fap c\u00e1c b\u00ean li\u00ean quan hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1c y\u00eau c\u1ea7u logic c\u1ee7a h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng c\u1ea7n bi\u1ebft ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh hay s\u01a1 \u0111\u1ed3 c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. Nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh bao g\u1ed3m: T\u1eadp trung v\u00e0o logic: N\u00f3 m\u00f4 t\u1ea3 h\u1ec7 th\u1ed1ng l\u00e0m g\u00ec, ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00e1ch n\u00f3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng v\u1ec1 m\u1eb7t v\u1eadt l\u00fd. \u0110\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra: M\u1ed7i qu\u00e1 tr\u00ecnh \u0111\u1ec1u ph\u1ea3i c\u00f3 \u00edt nh\u1ea5t m\u1ed9t \u0111\u1ea7u v\u00e0o v\u00e0 m\u1ed9t \u0111\u1ea7u ra. T\u00ednh b\u1ec1n v\u1eefng c\u1ee7a d\u1eef li\u1ec7u: N\u00f3 ph\u00e2n bi\u1ec7t gi\u1eefa d\u1eef li\u1ec7u \u0111ang di chuy\u1ec3n v\u00e0 d\u1eef li\u1ec7u \u0111ang \u1edf tr\u1ea1ng th\u00e1i ngh\u1ec9. \u0110\u1ecbnh ngh\u0129a ranh gi\u1edbi: N\u00f3 ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng h\u1ec7 th\u1ed1ng v\u1edbi th\u1ebf gi\u1edbi b\u00ean ngo\u00e0i. Hi\u1ec3u \u0111\u01b0\u1ee3c s\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng. Khi m\u1ed9t nh\u00e0 ph\u00e2n t\u00edch t\u1ea1o ra DFD, h\u1ecd \u0111ang t\u1ea1o b\u1ea3n \u0111\u1ed3 cho logic kinh doanh. B\u1ea3n \u0111\u1ed3 n\u00e0y \u0111\u00f3ng vai tr\u00f2 nh\u01b0 c\u00e2y c\u1ea7u n\u1ed1i gi\u1eefa y\u00eau c\u1ea7u kinh doanh v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u \u0111\u1ed3ng thu\u1eadn v\u1ec1 h\u00e0nh tr\u00ecnh d\u1eef li\u1ec7u tr\u01b0\u1edbc khi vi\u1ebft b\u1ea5t k\u1ef3 d\u00f2ng m\u00e3 n\u00e0o. 2. DFD kh\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 nh\u01b0 th\u1ebf n\u00e0o? \ud83d\udd04 \u0110\u00e2y l\u00e0 m\u1ed9t \u0111i\u1ec3m g\u00e2y nh\u1ea7m l\u1eabn ph\u1ed5 bi\u1ebfn. M\u1eb7c d\u00f9 c\u1ea3 hai \u0111\u1ec1u s\u1eed d\u1ee5ng h\u00ecnh d\u1ea1ng v\u00e0 m\u0169i t\u00ean, nh\u01b0ng m\u1ee5c \u0111\u00edch c\u1ee7a ch\u00fang ho\u00e0n to\u00e0n kh\u00e1c nhau. S\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 minh h\u1ecda lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n c\u1ee7a m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh ho\u1eb7c quy tr\u00ecnh. N\u00f3 th\u1ec3 hi\u1ec7n c\u00e1c \u0111i\u1ec3m quy\u1ebft \u0111\u1ecbnh (c\u00f3\/kh\u00f4ng), v\u00f2ng l\u1eb7p v\u00e0 tr\u00ecnh t\u1ef1 ch\u00ednh x\u00e1c c\u1ee7a c\u00e1c b\u01b0\u1edbc. Th\u01b0\u1eddng th\u00ec n\u00f3 qu\u00e1 chi ti\u1ebft cho ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng \u1edf c\u1ea5p \u0111\u1ed9 cao. Ng\u01b0\u1ee3c l\u1ea1i, DFD lo\u1ea1i b\u1ecf logic \u0111i\u1ec1u khi\u1ec3n. N\u00f3 kh\u00f4ng th\u1ec3 hi\u1ec7n v\u00f2ng l\u1eb7p hay nh\u00e1nh quy\u1ebft \u0111\u1ecbnh. Thay v\u00e0o \u0111\u00f3, n\u00f3 th\u1ec3 hi\u1ec7n s\u1ef1 bi\u1ebfn \u0111\u1ed5i c\u1ee7a d\u1eef li\u1ec7u. N\u1ebfu b\u1ea1n \u0111ang thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u, s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 c\u00f3 th\u1ec3 th\u1ec3 hi\u1ec7n logic truy v\u1ea5n. Trong khi \u0111\u00f3, DFD s\u1ebd th\u1ec3 hi\u1ec7n d\u1eef li\u1ec7u di chuy\u1ec3n t\u1eeb bi\u1ec3u m\u1eabu ng\u01b0\u1eddi d\u00f9ng v\u00e0o b\u1ea3ng c\u01a1 s\u1edf d\u1eef li\u1ec7u. Nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t c\u1ea7n ghi nh\u1edb: \u0110i\u1ec1u khi\u1ec3n so v\u1edbi D\u1eef li\u1ec7u:S\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 t\u1eadp trung v\u00e0o \u0111i\u1ec1u khi\u1ec3n; DFD t\u1eadp trung v\u00e0o d\u1eef li\u1ec7u. Logic so v\u1edbi Bi\u1ebfn \u0111\u1ed5i:S\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 th\u1ec3 hi\u1ec7n logic quy\u1ebft \u0111\u1ecbnh; DFD th\u1ec3 hi\u1ec7n bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u. Tr\u1ea1ng th\u00e1i so v\u1edbi Qu\u00e1 tr\u00ecnh:S\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 theo d\u00f5i s\u1ef1 thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i h\u1ec7 th\u1ed1ng; DFD theo d\u00f5i s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a d\u1eef li\u1ec7u. 3. B\u1ed1n k\u00fd hi\u1ec7u c\u1ed1t l\u00f5i l\u00e0 g\u00ec? \ud83d\udcd0 C\u00e1c DFD ti\u00eau chu\u1ea9n d\u1ef1a tr\u00ean b\u1ed1n k\u00fd hi\u1ec7u c\u1ee5 th\u1ec3 \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng. Vi\u1ec7c s\u1eed d\u1ee5ng ch\u00fang nh\u1ea5t qu\u00e1n s\u1ebd \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea5t k\u1ef3 ai \u0111\u1ecdc s\u01a1 \u0111\u1ed3 \u0111\u1ec1u hi\u1ec3u ngay l\u1eadp t\u1ee9c k\u00fd hi\u1ec7u \u0111\u00f3. Tham chi\u1ebfu k\u00fd hi\u1ec7u DFD K\u00fd hi\u1ec7u T\u00ean Ch\u1ee9c n\u0103ng Bi\u1ec3u di\u1ec5n tr\u1ef1c quan M\u0169i t\u00ean D\u00f2ng d\u1eef li\u1ec7u Hi\u1ec3n th\u1ecb s\u1ef1 di chuy\u1ec3n c\u1ee7a d\u1eef li\u1ec7u gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n \u0110\u01b0\u1eddng c\u00f3 nh\u00e3n H\u00ecnh tr\u00f2n ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt bo tr\u00f2n Quy tr\u00ecnh Chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o th\u00e0nh d\u1eef li\u1ec7u \u0111\u1ea7u ra H\u00ecnh tr\u00f2n \/ H\u1ed9p H\u00ecnh ch\u1eef nh\u1eadt m\u1edf Kho d\u1eef li\u1ec7u L\u01b0u tr\u1eef d\u1eef li\u1ec7u \u0111\u1ec3 s\u1eed d\u1ee5ng sau n\u00e0y Hai \u0111\u01b0\u1eddng song song \/ H\u1ed9p H\u00ecnh ch\u1eef nh\u1eadt Th\u00e0nh ph\u1ea7n b\u00ean ngo\u00e0i Ngu\u1ed3n ho\u1eb7c \u0111\u00edch c\u1ee7a d\u1eef li\u1ec7u b\u00ean ngo\u00e0i h\u1ec7 th\u1ed1ng H\u1ed9p M\u1ed7i k\u00fd hi\u1ec7u \u0111\u1ec1u c\u00f3 vai tr\u00f2 ri\u00eang bi\u1ec7t. Quy tr\u00ecnh thay \u0111\u1ed5i d\u1eef li\u1ec7u. Kho d\u1eef li\u1ec7u l\u01b0u tr\u1eef n\u00f3. Th\u00e0nh ph\u1ea7n b\u00ean ngo\u00e0i cung c\u1ea5p ho\u1eb7c ti\u00eau th\u1ee5 n\u00f3. D\u00f2ng d\u1eef li\u1ec7u k\u1ebft n\u1ed1i ch\u00fang l\u1ea1i v\u1edbi nhau. Vi\u1ec7c nh\u1ea7m l\u1eabn c\u00e1c k\u00fd hi\u1ec7u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn hi\u1ec3u l\u1ea7m nghi\u00eam tr\u1ecdng trong giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n. 4. C\u00e1c m\u1ee9c \u0111\u1ed9 c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 g\u00ec? \ud83d\udcda C\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi c\u00e1c m\u1ee9c \u0111\u1ed9 chi ti\u1ebft kh\u00e1c nhau \u0111\u1ec3 v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c t\u00ednh d\u1ec5 hi\u1ec3u. Ch\u00fang ta th\u01b0\u1eddng chia s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u th\u00e0nh ba m\u1ee9c ph\u00e2n c\u1ea5p. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201cph\u00e2n r\u00e3\u201d ho\u1eb7c \u201cn\u1ed5 tung\u201d s\u01a1 \u0111\u1ed3. S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh (M\u1ee9c 0): \u0110\u00e2y l\u00e0 m\u1ee9c cao nh\u1ea5t. N\u00f3 th\u1ec3 hi\u1ec7n to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng nh\u01b0 m\u1ed9t quy tr\u00ecnh duy nh\u1ea5t. N\u00f3 minh h\u1ecda ranh gi\u1edbi h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n b\u00ean ngo\u00e0i t\u01b0\u01a1ng t\u00e1c v\u1edbi n\u00f3. N\u00f3 cung c\u1ea5p c\u00e1i nh\u00ecn t\u1ed5ng quan.<\/p>\n","protected":false},"author":1,"featured_media":4213,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"C\u00e2u h\u1ecfi v\u00e0 tr\u1ea3 l\u1eddi v\u1ec1 DFD: 10 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p d\u00e0nh cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch m\u1edbi \ud83d\udcca","_yoast_wpseo_metadesc":"B\u1ed1i r\u1ed1i v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u? Ch\u00fang t\u00f4i tr\u1ea3 l\u1eddi 10 c\u00e2u h\u1ecfi h\u00e0ng \u0111\u1ea7u m\u00e0 c\u00e1c nh\u00e0 ph\u00e2n t\u00edch m\u1edbi \u0111\u1eb7t ra v\u1ec1 c\u00e1c c\u1ea5p \u0111\u1ed9, k\u00fd hi\u1ec7u v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed1t nh\u1ea5t trong m\u00f4 h\u00ecnh h\u00f3a h\u1ec7 th\u1ed1ng.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[84],"tags":[77,83],"class_list":["post-4212","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dfd","tag-academic","tag-dfd"],"yoast_head":"\nC\u00e2u h\u1ecfi v\u00e0 tr\u1ea3 l\u1eddi v\u1ec1 DFD: 10 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p d\u00e0nh cho c\u00e1c nh\u00e0 ph\u00e2n t\u00edch m\u1edbi \ud83d\udcca<\/title>\n<meta name=\"description\" content=\"B\u1ed1i r\u1ed1i v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u? 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