{"id":1821,"date":"2026-03-26T11:56:49","date_gmt":"2026-03-26T11:56:49","guid":{"rendered":"https:\/\/www.tech-posts.com\/vi\/quality-assurance-planning-data-flow-diagrams\/"},"modified":"2026-03-26T11:56:49","modified_gmt":"2026-03-26T11:56:49","slug":"quality-assurance-planning-data-flow-diagrams","status":"publish","type":"post","link":"https:\/\/www.tech-posts.com\/vi\/quality-assurance-planning-data-flow-diagrams\/","title":{"rendered":"L\u1eadp k\u1ebf ho\u1ea1ch \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng d\u1ef1a tr\u00ean c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u"},"content":{"rendered":"

\u0110\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng hi\u1ec7u qu\u1ea3 ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch th\u00f4ng tin di chuy\u1ec3n qua h\u1ec7 th\u1ed1ng. Kh\u00f4ng c\u00f3 b\u1ea3n \u0111\u1ed3 r\u00f5 r\u00e0ng, ki\u1ec3m th\u1eed tr\u1edf th\u00e0nh tr\u00f2 ch\u01a1i \u0111o\u00e1n m\u00f2. C\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) cung c\u1ea5p b\u1ea3n v\u1ebd thi\u1ebft k\u1ebf c\u1ea7n thi\u1ebft cho h\u00e0nh tr\u00ecnh n\u00e0y. Ch\u00fang minh h\u1ecda lu\u1ed3ng d\u1eef li\u1ec7u gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh, kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u, c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i v\u00e0 c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u. Khi b\u1ea1n c\u0103n c\u1ee9 k\u1ebf ho\u1ea1ch \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a m\u00ecnh v\u00e0o nh\u1eefng s\u01a1 \u0111\u1ed3 n\u00e0y, b\u1ea1n \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi th\u00f4ng tin \u0111\u1ec1u \u0111\u01b0\u1ee3c t\u00ednh \u0111\u1ebfn, ki\u1ec3m tra v\u00e0 b\u1ea3o v\u1ec7. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y chuy\u1ec3n d\u1ecbch ki\u1ec3m th\u1eed t\u1eeb vi\u1ec7c s\u1eeda l\u1ed7i ph\u1ea3n \u1ee9ng sang \u0111\u1ea3m b\u1ea3o ch\u1ee7 \u0111\u1ed9ng. \ud83d\udee1\ufe0f<\/p>\n

H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u00e1ch t\u1eadn d\u1ee5ng DFD \u0111\u1ec3 x\u00e2y d\u1ef1ng chi\u1ebfn l\u01b0\u1ee3c ki\u1ec3m th\u1eed c\u1ee7a b\u1ea1n. Ch\u00fang ta s\u1ebd \u0111i xa h\u01a1n c\u00e1c ki\u1ec3m tra ch\u1ee9c n\u0103ng \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 xem x\u00e9t t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u, \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i v\u00e0 \u0111\u1ed9 tin c\u1eady l\u01b0u tr\u1eef. B\u1eb1ng c\u00e1ch coi DFD l\u00e0 ngu\u1ed3n th\u00f4ng tin ch\u00ednh x\u00e1c cho c\u00e1c tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed c\u1ee7a b\u1ea1n, b\u1ea1n s\u1ebd t\u1ea1o ra m\u1ed9t khung v\u1eefng ch\u1eafc gi\u00fap ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 s\u1edbm. H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u c\u01a1 ch\u1ebf t\u00edch h\u1ee3p n\u00e0y.<\/p>\n

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

N\u1ec1n t\u1ea3ng: T\u1ea1i sao DFD l\u1ea1i quan tr\u1ecdng trong \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng \ud83e\udde9<\/h2>\n

\u0110\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c xem nh\u01b0 m\u1ed9t giai \u0111o\u1ea1n x\u1ea3y ra sau khi ph\u00e1t tri\u1ec3n. Tuy nhi\u00ean, ch\u1ea5t l\u01b0\u1ee3ng th\u1ef1c s\u1ef1 b\u1eaft \u0111\u1ea7u t\u1eeb vi\u1ec7c hi\u1ec3u r\u00f5 ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t s\u1ea3n ph\u1ea9m thi\u1ebft k\u1ebf; n\u00f3 l\u00e0 m\u00f4 h\u00ecnh logic v\u1ec1 h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng. N\u00f3 lo\u1ea1i b\u1ecf c\u00e1c chi ti\u1ebft tri\u1ec3n khai v\u1eadt l\u00fd \u0111\u1ec3 t\u1eadp trung v\u00e0o s\u1ef1 di chuy\u1ec3n c\u1ee7a d\u1eef li\u1ec7u. S\u1ef1 tr\u1eebu t\u01b0\u1ee3ng n\u00e0y l\u00e0 \u0111i\u1ec1u then ch\u1ed1t \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi ki\u1ec3m th\u1eed.<\/p>\n

Khi l\u1eadp k\u1ebf ho\u1ea1ch c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng, b\u1ea1n c\u1ea7n bi\u1ebft d\u1eef li\u1ec7u v\u00e0o \u1edf \u0111\u00e2u, thay \u0111\u1ed5i nh\u01b0 th\u1ebf n\u00e0o v\u00e0 tho\u00e1t ra \u1edf \u0111\u00e2u. C\u00e1c s\u01a1 \u0111\u1ed3 DFD tr\u1ea3 l\u1eddi nh\u1eefng c\u00e2u h\u1ecfi n\u00e0y m\u1ed9t c\u00e1ch tr\u1ef1c quan. Ch\u00fang l\u00e0m n\u1ed5i b\u1eadt ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c m\u1ed1i ph\u1ee5 thu\u1ed9c gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n n\u1ed9i b\u1ed9. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng l\u00fd do c\u1ed1t l\u00f5i \u0111\u1ec3 \u01b0u ti\u00ean DFD trong k\u1ebf ho\u1ea1ch c\u1ee7a b\u1ea1n:<\/p>\n

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  • Nh\u00ecn th\u1ea5y c\u00e1c con \u0111\u01b0\u1eddng \u1ea9n:<\/strong>C\u00e1c s\u01a1 \u0111\u1ed3 DFD ti\u1ebft l\u1ed9 c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u gi\u00e1n ti\u1ebfp c\u00f3 th\u1ec3 b\u1ecb b\u1ecf s\u00f3t trong qu\u00e1 tr\u00ecnh xem x\u00e9t m\u00e3 ngu\u1ed3n.<\/li>\n
  • X\u00e1c minh qu\u00e1 tr\u00ecnh:<\/strong>Ch\u00fang x\u00e1c \u0111\u1ecbnh s\u1ef1 chuy\u1ec3n \u0111\u1ed5i mong \u0111\u1ee3i t\u1eeb \u0111\u1ea7u v\u00e0o th\u00e0nh \u0111\u1ea7u ra.<\/li>\n
  • \u0110\u1ecbnh ngh\u0129a ranh gi\u1edbi:<\/strong>Ch\u00fang r\u00f5 r\u00e0ng \u0111\u00e1nh d\u1ea5u n\u01a1i h\u1ec7 th\u1ed1ng k\u1ebft th\u00fac v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i b\u1eaft \u0111\u1ea7u.<\/li>\n
  • To\u00e0n v\u1eb9n kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u:<\/strong>Ch\u00fang x\u00e1c \u0111\u1ecbnh n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c duy tr\u00ec, \u0111\u00f2i h\u1ecfi ki\u1ec3m th\u1eed l\u01b0u tr\u1eef c\u1ee5 th\u1ec3.<\/li>\n
  • Kh\u1ea3 n\u0103ng truy v\u1ebft l\u1ed7i:<\/strong>N\u1ebfu d\u1eef li\u1ec7u b\u1ecb h\u1ecfng, s\u01a1 \u0111\u1ed3 s\u1ebd gi\u00fap truy v\u1ebft ngu\u1ed3n g\u1ed1c c\u1ee7a s\u1ef1 c\u1ed1.<\/li>\n<\/ul>\n

    Kh\u00f4ng c\u00f3 \u0111i\u1ec3m neo tr\u1ef1c quan n\u00e0y, c\u00e1c tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed th\u01b0\u1eddng ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c y\u00eau c\u1ea7u b\u1ec1 m\u1eb7t. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn kho\u1ea3ng tr\u1ed1ng trong ph\u1ea1m vi ki\u1ec3m th\u1eed, n\u01a1i c\u00e1c b\u1ea5t th\u01b0\u1eddng d\u1eef li\u1ec7u d\u1ec5 d\u00e0ng l\u1ecdt qua. C\u0103n c\u1ee9 k\u1ebf ho\u1ea1ch c\u1ee7a b\u1ea1n v\u00e0o DFD \u0111\u1ea3m b\u1ea3o ph\u1ea1m vi ki\u1ec3m th\u1eed to\u00e0n di\u1ec7n d\u1ef1a tr\u00ean lu\u1ed3ng logic thay v\u00ec ch\u1ec9 danh s\u00e1ch t\u00ednh n\u0103ng. \ud83c\udfaf<\/p>\n

    Ph\u00e2n t\u00edch s\u01a1 \u0111\u1ed3 DFD \u0111\u1ec3 ki\u1ec3m th\u1eed \ud83e\uddd0<\/h2>\n

    \u0110\u1ec3 l\u1eadp k\u1ebf ho\u1ea1ch hi\u1ec7u qu\u1ea3, b\u1ea1n ph\u1ea3i hi\u1ec3u r\u00f5 c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee5 th\u1ec3 trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u. M\u1ed7i th\u00e0nh ph\u1ea7n \u0111\u1ea1i di\u1ec7n cho m\u1ed9t m\u1ee5c ti\u00eau ki\u1ec3m th\u1eed. H\u00e3y c\u00f9ng ph\u00e2n t\u00edch b\u1ed1n th\u00e0nh ph\u1ea7n ch\u00ednh v\u00e0 h\u1ec7 qu\u1ea3 c\u1ee7a ch\u00fang \u0111\u1ed1i v\u1edbi \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n

    1. C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i (Ngu\u1ed3n v\u00e0 \u0111\u00edch) \ud83c\udfe2<\/h3>\n

    C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i \u0111\u1ea1i di\u1ec7n cho 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 ph\u1ea7n m\u1ec1m. Trong l\u1eadp k\u1ebf ho\u1ea1ch \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng, \u0111\u00e2y l\u00e0 \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a b\u1ea1n.<\/p>\n

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    • X\u00e1c minh \u0111\u1ea7u v\u00e0o:<\/strong>M\u1ecdi lu\u1ed3ng d\u1eef li\u1ec7u \u0111i v\u00e0o m\u1ed9t th\u1ef1c th\u1ec3 \u0111\u1ec1u c\u1ea7n ki\u1ec3m tra x\u00e1c minh. \u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu ki\u1ec3u d\u1eef li\u1ec7u sai?<\/li>\n
    • Ki\u1ec3m tra quy\u1ec1n truy c\u1eadp:<\/strong>Th\u1ef1c th\u1ec3 n\u00e0y c\u00f3 quy\u1ec1n truy c\u1eadp v\u00e0o lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee5 th\u1ec3 n\u00e0y kh\u00f4ng?<\/li>\n
    • H\u1ee3p \u0111\u1ed3ng API:<\/strong>N\u1ebfu th\u1ef1c th\u1ec3 l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng kh\u00e1c, lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea1i di\u1ec7n cho m\u1ed9t h\u1ee3p \u0111\u1ed3ng giao di\u1ec7n.<\/li>\n<\/ul>\n

      2. C\u00e1c qu\u00e1 tr\u00ecnh (Chuy\u1ec3n \u0111\u1ed5i) \u2699\ufe0f<\/h3>\n

      C\u00e1c qu\u00e1 tr\u00ecnh l\u00e0 n\u01a1i d\u1eef li\u1ec7u thay \u0111\u1ed5i. Ch\u00fang nh\u1eadn \u0111\u1ea7u v\u00e0o, \u00e1p d\u1ee5ng logic v\u00e0 t\u1ea1o ra \u0111\u1ea7u ra. \u0110\u00e2y l\u00e0 logic c\u1ed1t l\u00f5i c\u1ee7a \u1ee9ng d\u1ee5ng.<\/p>\n

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      • X\u00e1c minh logic:<\/strong> \u0110\u1ea3m b\u1ea3o s\u1ef1 chuy\u1ec3n \u0111\u1ed5i ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c quy t\u1eafc kinh doanh.<\/li>\n
      • \u0110i\u1ec1u ki\u1ec7n bi\u00ean:<\/strong> Ki\u1ec3m tra gi\u1edbi h\u1ea1n c\u1ee7a quy tr\u00ecnh. \u0110i\u1ec1u g\u00ec x\u1ea3y ra v\u1edbi d\u1eef li\u1ec7u r\u1ed7ng? \u0110i\u1ec1u g\u00ec x\u1ea3y ra v\u1edbi d\u1eef li\u1ec7u kh\u1ed5ng l\u1ed3?<\/li>\n
      • Ki\u1ec3m tra ph\u1ee5 thu\u1ed9c:<\/strong> Quy tr\u00ecnh A c\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ea7u ra c\u1ee7a quy tr\u00ecnh B kh\u00f4ng?<\/li>\n<\/ul>\n

        3. Kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u (b\u1ec1n v\u1eefng) \ud83d\uddc4\ufe0f<\/h3>\n

        C\u00e1c kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u \u0111\u1ea1i di\u1ec7n cho c\u01a1 s\u1edf d\u1eef li\u1ec7u, t\u1ec7p tin ho\u1eb7c h\u00e0ng \u0111\u1ee3i n\u01a1i th\u00f4ng tin \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef. Ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ea3m b\u1ea3o \u1edf \u0111\u00e2y t\u1eadp trung v\u00e0o t\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 b\u1ea3o m\u1eadt.<\/p>\n

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        • Quy\u1ec1n truy c\u1eadp \u0111\u1ecdc\/ghi:<\/strong>X\u00e1c minh r\u1eb1ng ch\u1ec9 c\u00e1c quy tr\u00ecnh \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n m\u1edbi c\u00f3 th\u1ec3 thay \u0111\u1ed5i kho l\u01b0u tr\u1eef.<\/li>\n
        • T\u00ednh nh\u1ea5t qu\u00e1n d\u1eef li\u1ec7u:<\/strong>\u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c c\u1eadp nh\u1eadt kh\u00f4ng l\u00e0m h\u1ecfng c\u00e1c b\u1ea3n ghi hi\u1ec7n c\u00f3.<\/li>\n
        • Kh\u00f4i ph\u1ee5c:<\/strong>N\u1ebfu kho l\u01b0u tr\u1eef th\u1ea5t b\u1ea1i, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 kh\u00f4i ph\u1ee5c tr\u1ea1ng th\u00e1i d\u1eef li\u1ec7u kh\u00f4ng?<\/li>\n<\/ul>\n

          4. Lu\u1ed3ng d\u1eef li\u1ec7u (chuy\u1ec3n \u0111\u1ed9ng) \ud83d\udd04<\/h3>\n

          C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 nh\u1eefng m\u0169i t\u00ean k\u1ebft n\u1ed1i c\u00e1c th\u00e0nh ph\u1ea7n. Ch\u00fang \u0111\u1ea1i di\u1ec7n cho vi\u1ec7c truy\u1ec1n t\u1ea3i th\u00f4ng tin th\u1ef1c t\u1ebf.<\/p>\n

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          • Tu\u00e2n th\u1ee7 \u0111\u1ecbnh d\u1ea1ng:<\/strong>D\u1eef li\u1ec7u c\u00f3 duy tr\u00ec c\u1ea5u tr\u00fac c\u1ee7a n\u00f3 trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i kh\u00f4ng?<\/li>\n
          • B\u1ea3o m\u1eadt:<\/strong>D\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m c\u00f3 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a trong qu\u00e1 tr\u00ecnh truy\u1ec1n \u0111i kh\u00f4ng?<\/li>\n
          • \u0110\u1ed9 tr\u1ec5:<\/strong>Lu\u1ed3ng d\u1eef li\u1ec7u c\u00f3 \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u hi\u1ec7u su\u1ea5t kh\u00f4ng?<\/li>\n<\/ul>\n

            \u00c1nh x\u1ea1 c\u00e1c th\u00e0nh ph\u1ea7n DFD sang c\u00e1c tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed \ud83d\udcdd<\/h2>\n

            M\u1ed9t khi b\u1ea1n hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1c th\u00e0nh ph\u1ea7n, b\u01b0\u1edbc ti\u1ebfp theo l\u00e0 \u00e1nh x\u1ea1 ch\u00fang sang c\u00e1c ho\u1ea1t \u0111\u1ed9ng ki\u1ec3m th\u1eed c\u1ee5 th\u1ec3. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng kh\u00f4ng ph\u1ea7n n\u00e0o c\u1ee7a s\u01a1 \u0111\u1ed3 b\u1ecb b\u1ecf qua ki\u1ec3m th\u1eed. B\u1ea3ng sau \u0111\u00e2y n\u00eau r\u00f5 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n DFD v\u00e0 c\u00e1c h\u00e0nh \u0111\u1ed9ng ki\u1ec3m th\u1eed c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n\n\n\n\n\n\n
            Th\u00e0nh ph\u1ea7n DFD<\/th>\nV\u00f9ng t\u1eadp trung ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng<\/th>\nC\u00e2u h\u1ecfi ki\u1ec3m th\u1eed ch\u00ednh<\/th>\n<\/tr>\n<\/thead>\n
            Th\u00e0nh ph\u1ea7n b\u00ean ngo\u00e0i<\/td>\nGiao di\u1ec7n & Truy c\u1eadp<\/td>\nNg\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 x\u00e1c th\u1ef1c \u0111\u01b0\u1ee3c kh\u00f4ng? D\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o c\u00f3 \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch kh\u00f4ng?<\/td>\n<\/tr>\n
            Quy tr\u00ecnh<\/td>\nL\u00f4gic & Bi\u1ebfn \u0111\u1ed5i<\/td>\nC\u00f3 ph\u00e9p t\u00ednh kh\u1edbp v\u1edbi c\u00f4ng th\u1ee9c kh\u00f4ng? \u0110\u1ea7u ra c\u00f3 \u0111\u00fang kh\u00f4ng?<\/td>\n<\/tr>\n
            Kho d\u1eef li\u1ec7u<\/td>\nTo\u00e0n v\u1eb9n & L\u01b0u tr\u1eef<\/td>\nD\u1eef li\u1ec7u c\u00f3 \u0111\u01b0\u1ee3c l\u01b0u \u0111\u00fang c\u00e1ch kh\u00f4ng? C\u00f3 th\u1ec3 truy xu\u1ea5t \u0111\u01b0\u1ee3c kh\u00f4ng?<\/td>\n<\/tr>\n
            D\u00f2ng d\u1eef li\u1ec7u<\/td>\nTruy\u1ec1n t\u1ea3i & B\u1ea3o m\u1eadt<\/td>\nD\u1eef li\u1ec7u c\u00f3 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a kh\u00f4ng? \u0110\u1ecbnh d\u1ea1ng c\u00f3 h\u1ee3p l\u1ec7 trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i kh\u00f4ng?<\/td>\n<\/tr>\n
            Quy tr\u00ecnh ph\u00e2n r\u00e3<\/td>\nX\u00e1c minh quy tr\u00ecnh con<\/td>\nC\u00e1c quy tr\u00ecnh con c\u00f3 \u0111\u00f3ng g\u00f3p \u0111\u00fang c\u00e1ch v\u00e0o m\u1ee5c ti\u00eau ch\u00ednh kh\u00f4ng?<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            S\u1eed d\u1ee5ng ma tr\u1eadn n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o ra danh s\u00e1ch ki\u1ec3m tra cho b\u1ed9 ki\u1ec3m th\u1eed c\u1ee7a m\u00ecnh. N\u1ebfu m\u1ed9t h\u00e0ng trong b\u1ea3ng ch\u01b0a \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u, b\u1ea1n s\u1ebd c\u00f3 kho\u1ea3ng tr\u1ed1ng trong ph\u1ea1m vi ki\u1ec3m th\u1eed c\u1ee7a m\u00ecnh. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y ng\u0103n ch\u1eb7n v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn khi ng\u01b0\u1eddi ki\u1ec3m th\u1eed ch\u1ec9 t\u1eadp trung v\u00e0o \u0111\u01b0\u1eddng \u0111i thu\u1eadn l\u1ee3i. H\u1ecd bu\u1ed9c b\u1ea1n ph\u1ea3i xem x\u00e9t c\u1ea3 \u0111\u01b0\u1eddng \u0111i ti\u00eau c\u1ef1c n\u1eefa.<\/p>\n

            Chi\u1ebfn l\u01b0\u1ee3c cho ph\u1ea1m vi bao ph\u1ee7 lu\u1ed3ng d\u1eef li\u1ec7u \ud83d\udd78\ufe0f<\/h2>\n

            Ph\u1ea1m vi ki\u1ec3m th\u1eed trong QA kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 ch\u1ea1m v\u00e0o c\u00e1c d\u00f2ng m\u00e3. N\u00f3 l\u00e0 v\u1ec1 vi\u1ec7c \u0111i qua c\u00e1c \u0111\u01b0\u1eddng \u0111i logic \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong s\u01a1 \u0111\u1ed3 DFD c\u1ee7a b\u1ea1n. C\u00f3 nh\u1eefng chi\u1ebfn l\u01b0\u1ee3c c\u1ee5 th\u1ec3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea1n bao ph\u1ee7 to\u00e0n di\u1ec7n s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u.<\/p>\n

            1. Ki\u1ec3m th\u1eed bao ph\u1ee7 \u0111\u01b0\u1eddng \u0111i<\/h3>\n

            Theo d\u00f5i t\u1eebng \u0111\u01b0\u1eddng \u0111i duy nh\u1ea5t t\u1eeb m\u1ed9t th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i \u0111\u1ebfn kho d\u1eef li\u1ec7u ho\u1eb7c quay l\u1ea1i th\u1ef1c th\u1ec3 kh\u00e1c. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m vi\u1ec7c t\u1ea1o c\u00e1c t\u00ecnh hu\u1ed1ng ki\u1ec3m th\u1eed tu\u00e2n theo c\u00e1c m\u0169i t\u00ean trong s\u01a1 \u0111\u1ed3. N\u1ebfu m\u1ed9t quy tr\u00ecnh t\u00e1ch th\u00e0nh hai nh\u00e1nh, b\u1ea1n ph\u1ea3i ki\u1ec3m th\u1eed c\u1ea3 hai nh\u00e1nh. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o logic \u0111i\u1ec1u ki\u1ec7n \u0111\u01b0\u1ee3c x\u00e1c minh.<\/p>\n

              \n
            • \u0110i\u1ec3m b\u1eaft \u0111\u1ea7u:<\/strong>X\u00e1c \u0111\u1ecbnh \u0111i\u1ec3m v\u00e0o trong s\u01a1 \u0111\u1ed3 DFD.<\/li>\n
            • \u0110i\u1ec3m k\u1ebft th\u00fac:<\/strong>X\u00e1c \u0111\u1ecbnh \u0111i\u1ec3m ra ho\u1eb7c kho d\u1eef li\u1ec7u cu\u1ed1i c\u00f9ng.<\/li>\n
            • Nh\u00e1nh ph\u00e2n nh\u00e1nh:<\/strong>X\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m quy\u1ebft \u0111\u1ecbnh n\u01a1i lu\u1ed3ng c\u00f3 th\u1ec3 t\u00e1ch ra.<\/li>\n<\/ul>\n

              2. X\u00e1c minh bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u<\/h3>\n

              C\u00e1c quy tr\u00ecnh bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u. B\u1ea1n ph\u1ea3i x\u00e1c minh r\u1eb1ng logic bi\u1ebfn \u0111\u1ed5i v\u1eabn \u0111\u00fang trong su\u1ed1t h\u1ec7 th\u1ed1ng. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng b\u1ecb b\u1ecf qua trong ki\u1ec3m th\u1eed c\u1ea5p cao.<\/p>\n

                \n
              • Ph\u00f9 h\u1ee3p \u0111\u1ea7u v\u00e0o\/\u0111\u1ea7u ra:<\/strong>So s\u00e1nh d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o v\u1edbi \u0111\u1ea7u ra cu\u1ed1i c\u00f9ng sau khi x\u1eed l\u00fd.<\/li>\n
              • Tr\u1ea1ng th\u00e1i trung gian:<\/strong>Ki\u1ec3m tra d\u1eef li\u1ec7u t\u1ea1i c\u00e1c kho d\u1eef li\u1ec7u trung gian \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o n\u00f3 kh\u00f4ng b\u1ecb thay \u0111\u1ed5i sai.<\/li>\n
              • Chuy\u1ec3n \u0111\u1ed5i \u0111\u1ecbnh d\u1ea1ng:<\/strong>X\u00e1c minh r\u1eb1ng c\u00e1c ki\u1ec3u d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i ch\u00ednh x\u00e1c (v\u00ed d\u1ee5: chu\u1ed7i sang s\u1ed1 nguy\u00ean, \u0111\u1ecbnh d\u1ea1ng ng\u00e0y th\u00e1ng).<\/li>\n<\/ul>\n

                3. Ph\u00e2n t\u00edch lan truy\u1ec1n l\u1ed7i<\/h3>\n

                \u0110i\u1ec1u g\u00ec x\u1ea3y ra khi d\u1eef li\u1ec7u th\u1ea5t b\u1ea1i t\u1ea1i m\u1ed9t \u0111i\u1ec3m c\u1ee5 th\u1ec3? S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u gi\u00fap h\u00ecnh dung n\u01a1i l\u1ed7i c\u00f3 th\u1ec3 x\u1ea3y ra v\u00e0 c\u00e1ch ch\u00fang c\u00f3 th\u1ec3 lan truy\u1ec1n. B\u1ea1n c\u1ea7n l\u00ean k\u1ebf ho\u1ea1ch c\u00e1c b\u00e0i ki\u1ec3m th\u1eed nh\u1eb1m \u0111\u01b0a l\u1ed7i v\u00e0o c\u00e1c giai \u0111o\u1ea1n kh\u00e1c nhau.<\/p>\n

                  \n
                • D\u1eef li\u1ec7u kh\u00f4ng h\u1ee3p l\u1ec7:<\/strong>G\u1eedi d\u1eef li\u1ec7u b\u1ecb l\u1ed7i \u0111\u1ebfn m\u1ed9t qu\u00e1 tr\u00ecnh. N\u00f3 c\u00f3 d\u1eebng ho\u1ea1t \u0111\u1ed9ng m\u1ed9t c\u00e1ch tr\u01a1n tru kh\u00f4ng?<\/li>\n
                • D\u1eef li\u1ec7u b\u1ecb thi\u1ebfu:<\/strong>Lo\u1ea1i b\u1ecf m\u1ed9t tr\u01b0\u1eddng b\u1eaft bu\u1ed9c kh\u1ecfi lu\u1ed3ng d\u1eef li\u1ec7u. H\u1ec7 th\u1ed1ng c\u00f3 th\u00f4ng b\u00e1o cho ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng?<\/li>\n
                • L\u1ed7i l\u01b0u tr\u1eef:<\/strong>M\u00f4 ph\u1ecfng t\u00ecnh tr\u1ea1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00f4ng kh\u1ea3 d\u1ee5ng. Qu\u00e1 tr\u00ecnh c\u00f3 d\u1eebng l\u1ea1i hay th\u1eed l\u1ea1i kh\u00f4ng?<\/li>\n<\/ul>\n

                  Ph\u00e1t hi\u1ec7n c\u00e1c l\u1ed7 h\u1ed5ng th\u00f4ng qua ph\u00e2n t\u00edch s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \ud83d\udd0d<\/h2>\n

                  B\u1ea3o m\u1eadt l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u r\u1ea5t hi\u1ec7u qu\u1ea3 trong vi\u1ec7c ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec3m y\u1ebfu b\u1ea3o m\u1eadt tr\u01b0\u1edbc khi m\u00e3 h\u00f3a th\u1eadm ch\u00ed ch\u01b0a \u0111\u01b0\u1ee3c vi\u1ebft. B\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch lu\u1ed3ng, b\u1ea1n c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh n\u01a1i d\u1eef li\u1ec7u c\u00f3 th\u1ec3 b\u1ecb l\u1ed9.<\/p>\n

                  1. \u0110i\u1ec3m truy c\u1eadp tr\u00e1i ph\u00e9p<\/h3>\n

                  T\u00ecm ki\u1ebfm c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u v\u01b0\u1ee3t qua bi\u00ean gi\u1edbi h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng c\u00f3 x\u00e1c th\u1ef1c r\u00f5 r\u00e0ng. N\u1ebfu m\u1ed9t qu\u00e1 tr\u00ecnh \u0111\u1ecdc t\u1eeb kho d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m, h\u00e3y \u0111\u1ea3m b\u1ea3o lu\u1ed3ng d\u1eef li\u1ec7u n\u00e0y th\u1ec3 hi\u1ec7n m\u1ed9t ki\u1ec3m tra b\u1ea3o m\u1eadt.<\/p>\n

                    \n
                  • N\u00e2ng c\u1ea5p \u0111\u1eb7c quy\u1ec1n:<\/strong>M\u1ed9t ng\u01b0\u1eddi d\u00f9ng c\u1ea5p th\u1ea5p c\u00f3 th\u1ec3 k\u00edch ho\u1ea1t m\u1ed9t qu\u00e1 tr\u00ecnh c\u1ea5p cao kh\u00f4ng?<\/li>\n
                  • Truy c\u1eadp kho d\u1eef li\u1ec7u tr\u1ef1c ti\u1ebfp:<\/strong>\u0110\u1ea3m b\u1ea3o ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng th\u1ec3 b\u1ecf qua c\u00e1c qu\u00e1 tr\u00ecnh v\u00e0 truy c\u1eadp tr\u1ef1c ti\u1ebfp v\u00e0o kho d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n

                    2. R\u1ee7i ro r\u00f2 r\u1ec9 d\u1eef li\u1ec7u<\/h3>\n

                    X\u00e1c \u0111\u1ecbnh n\u01a1i th\u00f4ng tin nh\u1ea1y c\u1ea3m (PII, d\u1eef li\u1ec7u t\u00e0i ch\u00ednh) \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i. \u0110\u1ea3m b\u1ea3o c\u00e1c lu\u1ed3ng n\u00e0y \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u \u0111\u1ec3 m\u00e3 h\u00f3a ho\u1eb7c che gi\u1ea5u.<\/p>\n

                      \n
                    • Ghi nh\u1eadt k\u00fd:<\/strong>H\u1ec7 th\u1ed1ng c\u00f3 ghi nh\u1eadt k\u00fd c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m kh\u00f4ng? \u0110i\u1ec1u n\u00e0y c\u1ea7n b\u1ecb c\u1ea5m.<\/li>\n
                    • Chuy\u1ec3n giao cho b\u00ean th\u1ee9 ba:<\/strong>N\u1ebfu d\u1eef li\u1ec7u r\u1eddi kh\u1ecfi h\u1ec7 th\u1ed1ng, li\u1ec7u n\u00f3 c\u00f3 \u0111\u01b0\u1ee3c g\u1eedi m\u1ed9t c\u00e1ch an to\u00e0n kh\u00f4ng?<\/li>\n<\/ul>\n

                      3. C\u00e1c vect\u01a1 t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5<\/h3>\n

                      M\u1ed9t s\u1ed1 lu\u1ed3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng. N\u1ebfu m\u1ed9t qu\u00e1 tr\u00ecnh ti\u00eau th\u1ee5 l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u, n\u00f3 c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh vect\u01a1 g\u00e2y c\u1ea1n ki\u1ec7t t\u00e0i nguy\u00ean.<\/p>\n

                        \n
                      • Ki\u1ec3m th\u1eed t\u1ea3i:<\/strong>M\u00f4 ph\u1ecfng lu\u1ed3ng d\u1eef li\u1ec7u kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn tr\u00ean c\u00e1c qu\u00e1 tr\u00ecnh quan tr\u1ecdng.<\/li>\n
                      • Qu\u1ea3n l\u00fd h\u00e0ng \u0111\u1ee3i:<\/strong>\u0110\u1ea3m b\u1ea3o c\u00e1c kho d\u1eef li\u1ec7u c\u00f3 th\u1ec3 x\u1eed l\u00fd \u0111\u01b0\u1ee3c c\u00e1c \u0111\u1ee3t t\u0103ng \u0111\u1ed9t bi\u1ebfn trong lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o.<\/li>\n<\/ul>\n

                        Tinh ch\u1ec9nh v\u00e0 b\u1ea3o tr\u00ec theo t\u1eebng b\u01b0\u1edbc \ud83d\udd04<\/h2>\n

                        Ph\u1ea7n m\u1ec1m kh\u00f4ng ph\u1ea3i l\u00e0 t\u0129nh. Khi y\u00eau c\u1ea7u thay \u0111\u1ed5i, h\u1ec7 th\u1ed1ng c\u0169ng thay \u0111\u1ed5i. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n ph\u1ea3i ph\u00e1t tri\u1ec3n song song v\u1edbi \u1ee9ng d\u1ee5ng. C\u00e1c s\u01a1 \u0111\u1ed3 t\u0129nh d\u1eabn \u0111\u1ebfn c\u00e1c k\u1ebf ho\u1ea1ch ki\u1ec3m th\u1eed l\u1ed7i th\u1eddi. L\u1eadp k\u1ebf ho\u1ea1ch ki\u1ec3m th\u1eed ch\u1ea5t l\u01b0\u1ee3ng d\u1ef1a tr\u00ean s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u00f2i h\u1ecfi m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o tr\u00ec.<\/p>\n

                        1. Ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n cho s\u01a1 \u0111\u1ed3<\/h3>\n

                        Xem c\u00e1c s\u01a1 \u0111\u1ed3 DFD c\u1ee7a b\u1ea1n nh\u01b0 m\u00e3 ngu\u1ed3n. Ch\u00fang c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n. Khi m\u1ed9t quy tr\u00ecnh thay \u0111\u1ed5i, s\u01a1 \u0111\u1ed3 s\u1ebd \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt, \u0111\u1ed3ng th\u1eddi k\u1ebf ho\u1ea1ch ki\u1ec3m th\u1eed c\u0169ng \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o s\u1ef1 \u0111\u1ed3ng b\u1ed9 gi\u1eefa thi\u1ebft k\u1ebf v\u00e0 ki\u1ec3m th\u1eed.<\/p>\n

                          \n
                        • S\u1ed5 nh\u1eadt k\u00fd thay \u0111\u1ed5i:<\/strong>Ghi l\u1ea1i m\u1ecdi thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi s\u01a1 \u0111\u1ed3 DFD.<\/li>\n
                        • Ph\u00e2n t\u00edch t\u00e1c \u0111\u1ed9ng:<\/strong>Khi c\u00f3 thay \u0111\u1ed5i x\u1ea3y ra, x\u00e1c \u0111\u1ecbnh c\u00e1c tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed b\u1ecb \u1ea3nh h\u01b0\u1edfng.<\/li>\n
                        • V\u00f2ng ki\u1ec3m tra:<\/strong>L\u00ean l\u1ecbch ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 s\u01a1 \u0111\u1ed3 DFD so v\u1edbi m\u00e3 ngu\u1ed3n hi\u1ec7n t\u1ea1i.<\/li>\n<\/ul>\n

                          2. T\u00edch h\u1ee3p v\u1edbi chu k\u1ef3 ph\u00e1t tri\u1ec3n<\/h3>\n

                          C\u00e1c s\u01a1 \u0111\u1ed3 DFD c\u1ea7n \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o quy tr\u00ecnh ph\u00e1t tri\u1ec3n, ch\u1ee9 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t c\u00f4ng vi\u1ec7c t\u00e0i li\u1ec7u h\u00f3a. Ch\u00fang gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n hi\u1ec3u r\u00f5 c\u00e1c k\u1ef3 v\u1ecdng ki\u1ec3m th\u1eed.<\/p>\n

                            \n
                          • Ph\u1ea3n h\u1ed3i s\u1edbm:<\/strong>C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n nh\u1eefng kho\u1ea3ng tr\u1ed1ng logic trong lu\u1ed3ng tr\u01b0\u1edbc khi vi\u1ebft m\u00e3.<\/li>\n
                          • Hi\u1ec3u bi\u1ebft chung:<\/strong>C\u00e1c \u0111\u1ed9i QA v\u00e0 Dev s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t ng\u00f4n ng\u1eef tr\u1ef1c quan.<\/li>\n
                          • \u0110\u1ed3ng b\u1ed9 h\u00f3a t\u00e0i li\u1ec7u:<\/strong>S\u00e1ch h\u01b0\u1edbng d\u1eabn ng\u01b0\u1eddi d\u00f9ng v\u00e0 t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt c\u1ea7n tham chi\u1ebfu \u0111\u1ebfn s\u01a1 \u0111\u1ed3 DFD hi\u1ec7n t\u1ea1i.<\/li>\n<\/ul>\n

                            3. X\u1eed l\u00fd c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p<\/h3>\n

                            \u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng l\u1edbn, m\u1ed9t s\u01a1 \u0111\u1ed3 DFD duy nh\u1ea5t hi\u1ebfm khi \u0111\u1ee7. B\u1ea1n c\u00f3 th\u1ec3 s\u1ebd c\u1ea7n m\u1ed9t c\u1ea5u tr\u00fac s\u01a1 \u0111\u1ed3 theo c\u1ea5p \u0111\u1ed9 (B\u1ed1i c\u1ea3nh, M\u1ee9c 0, M\u1ee9c 1).<\/p>\n

                              \n
                            • S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh:<\/strong>X\u00e1c \u0111\u1ecbnh ranh gi\u1edbi h\u1ec7 th\u1ed1ng cho ki\u1ec3m th\u1eed c\u1ea5p cao.<\/li>\n
                            • S\u01a1 \u0111\u1ed3 m\u1ee9c 0:<\/strong>Ph\u00e2n t\u00edch c\u00e1c quy tr\u00ecnh ch\u00ednh \u0111\u1ec3 ki\u1ec3m th\u1eed ch\u1ee9c n\u0103ng.<\/li>\n
                            • S\u01a1 \u0111\u1ed3 m\u1ee9c 1:<\/strong>Chi ti\u1ebft c\u00e1c quy tr\u00ecnh con \u0111\u1ec3 ki\u1ec3m th\u1eed \u0111\u01a1n v\u1ecb v\u00e0 ki\u1ec3m th\u1eed t\u00edch h\u1ee3p.<\/li>\n<\/ul>\n

                              Vi\u1ec7c s\u1eed d\u1ee5ng c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p n\u00e0y gi\u00fap b\u1ea1n m\u1edf r\u1ed9ng k\u1ebf ho\u1ea1ch ki\u1ec3m th\u1eed ch\u1ea5t l\u01b0\u1ee3ng. B\u1ea1n kh\u00f4ng c\u1ea7n ki\u1ec3m th\u1eed m\u1ecdi chi ti\u1ebft trong m\u1ed9t l\u1ea7n. B\u1ea1n c\u00f3 th\u1ec3 l\u00ean k\u1ebf ho\u1ea1ch ki\u1ec3m th\u1eed t\u00edch h\u1ee3p c\u1ea5p cao tr\u01b0\u1edbc, sau \u0111\u00f3 \u0111i s\u00e2u v\u00e0o c\u00e1c lu\u1ed3ng c\u1ee5 th\u1ec3.<\/p>\n

                              Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong l\u1eadp k\u1ebf ho\u1ea1ch ki\u1ec3m th\u1eed d\u1ef1a tr\u00ean DFD \u26a0\ufe0f<\/h2>\n

                              Ngay c\u1ea3 khi c\u00f3 k\u1ebf ho\u1ea1ch v\u1eefng ch\u1eafc, c\u00e1c \u0111\u1ed9i nh\u00f3m v\u1eabn c\u00f3 th\u1ec3 v\u1ea5p ng\u00e3. Vi\u1ec7c nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn s\u1ebd gi\u00fap b\u1ea1n tr\u00e1nh \u0111\u01b0\u1ee3c ch\u00fang.<\/p>\n

                                \n
                              • Qu\u00e1 ph\u1ee9c t\u1ea1p:<\/strong>M\u1ed9t s\u01a1 \u0111\u1ed3 DFD c\u00f3 qu\u00e1 nhi\u1ec1u n\u00fat s\u1ebd tr\u1edf n\u00ean kh\u00f3 \u0111\u1ecdc. H\u00e3y gi\u1eef cho n\u00f3 s\u1ea1ch s\u1ebd v\u00e0 t\u1eadp trung v\u00e0o d\u1eef li\u1ec7u, ch\u1ee9 kh\u00f4ng ph\u1ea3i logic \u0111i\u1ec1u khi\u1ec3n.<\/li>\n
                              • B\u1ecf qua lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n:<\/strong> C\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u t\u1eadp trung v\u00e0o d\u1eef li\u1ec7u, nh\u01b0ng c\u00e1c t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n c\u0169ng quan tr\u1ecdng. \u0110\u1ea3m b\u1ea3o ki\u1ec3m th\u1eed c\u1ee7a b\u1ea1n t\u00ednh \u0111\u1ebfn c\u00e1c thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i kh\u00f4ng \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb trong lu\u1ed3ng.<\/li>\n
                              • T\u01b0 duy t\u0129nh t\u1ea1i:<\/strong> Gi\u1ea3 \u0111\u1ecbnh s\u01a1 \u0111\u1ed3 s\u1ebd kh\u00f4ng bao gi\u1edd thay \u0111\u1ed5i. T\u00ednh linh ho\u1ea1t l\u00e0 ch\u00eca kh\u00f3a cho ki\u1ec3m th\u1eed hi\u1ec7n \u0111\u1ea1i.<\/li>\n
                              • B\u1ecf qua c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i:<\/strong> Ki\u1ec3m th\u1eed c\u00e1c quy tr\u00ecnh n\u1ed9i b\u1ed9 s\u1ebd v\u00f4 \u00edch n\u1ebfu \u0111\u1ea7u v\u00e0o b\u00ean ngo\u00e0i kh\u00f4ng h\u1ee3p l\u1ec7. Lu\u00f4n ki\u1ec3m th\u1eed c\u00e1c ranh gi\u1edbi.<\/li>\n
                              • Gi\u1ea3 \u0111\u1ecbnh d\u1eef li\u1ec7u ho\u00e0n h\u1ea3o:<\/strong> D\u1eef li\u1ec7u th\u1ef1c t\u1ebf th\u01b0\u1eddng l\u1ed9n x\u1ed9n. Ki\u1ec3m th\u1eed c\u1ee7a b\u1ea1n ph\u1ea3i ph\u1ea3n \u00e1nh c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u b\u1ea9n, kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 ho\u1eb7c tr\u00f9ng l\u1eb7p.<\/li>\n<\/ul>\n

                                X\u00e2y d\u1ef1ng khung QA v\u1eefng ch\u1eafc \ud83c\udfd7\ufe0f<\/h2>\n

                                T\u00edch h\u1ee3p c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0o quy tr\u00ecnh \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng t\u1ea1o ra m\u1ed9t khung h\u1ec7 th\u1ed1ng b\u1ec1n v\u1eefng v\u00e0 c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng. N\u00f3 chuy\u1ec3n cu\u1ed9c tr\u00f2 chuy\u1ec7n t\u1eeb “t\u00ednh n\u0103ng n\u00e0y c\u00f3 ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng?” sang “d\u1eef li\u1ec7u c\u00f3 di chuy\u1ec3n \u0111\u00fang c\u00e1ch kh\u00f4ng?”. S\u1ef1 ph\u00e2n bi\u1ec7t n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p n\u01a1i t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u l\u00e0 l\u1ee3i th\u1ebf c\u1ed1t l\u00f5i.<\/p>\n

                                B\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c ki\u1ec3m tra t\u00e0i li\u1ec7u hi\u1ec7n t\u1ea1i c\u1ee7a b\u1ea1n. N\u1ebfu b\u1ea1n ch\u01b0a c\u00f3 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u, h\u00e3y b\u1eaft \u0111\u1ea7u t\u1ea1o ch\u00fang. Tham gia c\u00e1c b\u00ean li\u00ean quan. C\u00e1c ki\u1ebfn tr\u00fac s\u01b0, nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 ng\u01b0\u1eddi ki\u1ec3m th\u1eed \u0111\u1ec1u c\u1ea7n \u0111\u00f3ng g\u00f3p v\u00e0o \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a s\u01a1 \u0111\u1ed3. S\u1ef1 h\u1ee3p t\u00e1c n\u00e0y \u0111\u1ea3m b\u1ea3o b\u1ea3n \u0111\u1ed3 ch\u00ednh x\u00e1c v\u00e0 k\u1ebf ho\u1ea1ch ki\u1ec3m th\u1eed \u0111\u00e1ng tin c\u1eady.<\/p>\n

                                H\u00e3y nh\u1edb r\u1eb1ng m\u1ee5c ti\u00eau kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 ho\u00e0n h\u1ea3o trong s\u01a1 \u0111\u1ed3, m\u00e0 l\u00e0 s\u1ef1 r\u00f5 r\u00e0ng trong k\u1ebf ho\u1ea1ch. M\u1ed9t s\u01a1 \u0111\u1ed3 \u0111\u01a1n gi\u1ea3n v\u1edbi c\u00e1c ranh gi\u1edbi r\u00f5 r\u00e0ng t\u1ed1t h\u01a1n m\u1ed9t s\u01a1 \u0111\u1ed3 ph\u1ee9c t\u1ea1p v\u1edbi s\u1ef1 m\u01a1 h\u1ed3. S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ec3 d\u1eabn d\u1eaft vi\u1ec7c t\u1ea1o tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed, \u0111\u00e1nh gi\u00e1 r\u1ee7i ro v\u00e0 xem x\u00e9t b\u1ea3o m\u1eadt c\u1ee7a b\u1ea1n. B\u1eb1ng c\u00e1ch g\u1eafn k\u1ebft n\u1ed7 l\u1ef1c \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a b\u1ea1n v\u00e0o lu\u1ed3ng d\u1eef li\u1ec7u, b\u1ea1n \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang nh\u01b0 mong \u0111\u1ee3i trong m\u1ecdi \u0111i\u1ec1u ki\u1ec7n. \ud83d\ude80<\/p>\n

                                T\u00f3m t\u1eaft c\u00e1c h\u00e0nh \u0111\u1ed9ng ch\u00ednh \ud83d\udccb<\/h2>\n
                                  \n
                                • Ph\u00e2n t\u00edch m\u1ecdi lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 \u0111\u1ecbnh d\u1ea1ng v\u00e0 b\u1ea3o m\u1eadt.<\/li>\n
                                • Li\u00ean k\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c quy tr\u00ecnh v\u00e0 kho l\u01b0u tr\u1eef trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u.<\/li>\n
                                • X\u00e1c minh c\u00e1c \u0111i\u1ec1u ki\u1ec7n bi\u00ean t\u1ea1i c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i.<\/li>\n
                                • C\u1eadp nh\u1eadt s\u01a1 \u0111\u1ed3 m\u1ed7i khi ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng thay \u0111\u1ed5i.<\/li>\n
                                • S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt ti\u1ec1m t\u00e0ng.<\/li>\n
                                • \u0110\u1ea3m b\u1ea3o m\u1ecdi bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u \u0111\u1ec1u \u0111\u01b0\u1ee3c x\u00e1c minh v\u1ec1 m\u1eb7t logic.<\/li>\n
                                • T\u00e0i li\u1ec7u l\u00fd do cho ph\u1ea1m vi ki\u1ec3m th\u1eed d\u1ef1a tr\u00ean lu\u1ed3ng d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n

                                  \u00c1p d\u1ee5ng c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac n\u00e0y n\u00e2ng cao \u0111\u1ed9 tin c\u1eady c\u1ee7a ph\u1ea7n m\u1ec1m c\u1ee7a b\u1ea1n. N\u00f3 cung c\u1ea5p t\u1ea7m nh\u00ecn r\u00f5 r\u00e0ng t\u1eeb y\u00eau c\u1ea7u \u0111\u1ebfn th\u1ef1c thi. Khi \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean n\u1ec1n t\u1ea3ng lu\u1ed3ng d\u1eef li\u1ec7u, b\u1ea1n t\u1ea1o ra c\u00e1c h\u1ec7 th\u1ed1ng kh\u00f4ng ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c, m\u00e0 c\u00f2n \u0111\u00e1ng tin c\u1eady. S\u1ef1 tin t\u01b0\u1edfng l\u00e0 \u0111\u1ed3ng ti\u1ec1n cu\u1ed1i c\u00f9ng trong ph\u1ea7n m\u1ec1m, v\u00e0 t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u l\u00e0 b\u1eb1ng ch\u1ee9ng cho gi\u00e1 tr\u1ecb \u0111\u00f3. \ud83d\udca1<\/p>\n","protected":false},"excerpt":{"rendered":"

                                  \u0110\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng hi\u1ec7u qu\u1ea3 ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1ch th\u00f4ng tin di chuy\u1ec3n qua h\u1ec7 th\u1ed1ng. Kh\u00f4ng c\u00f3 b\u1ea3n \u0111\u1ed3 r\u00f5 r\u00e0ng, ki\u1ec3m th\u1eed tr\u1edf th\u00e0nh…<\/p>\n","protected":false},"author":1,"featured_media":1822,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"H\u01b0\u1edbng d\u1eabn l\u1eadp k\u1ebf ho\u1ea1ch QA v\u1edbi s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \ud83d\udcca","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch g\u1eafn k\u1ebft l\u1eadp k\u1ebf ho\u1ea1ch \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u. 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