{"id":11106,"date":"2026-01-10T07:29:25","date_gmt":"2026-01-09T23:29:25","guid":{"rendered":"https:\/\/blog.visual-paradigm.com\/vn\/beginners-guide-to-yourdon-and-coad-diagrams-with-visual-paradigm-online\/"},"modified":"2026-01-10T07:29:25","modified_gmt":"2026-01-09T23:29:25","slug":"beginners-guide-to-yourdon-and-coad-diagrams-with-visual-paradigm-online","status":"publish","type":"post","link":"https:\/\/blog.visual-paradigm.com\/vn\/beginners-guide-to-yourdon-and-coad-diagrams-with-visual-paradigm-online\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u v\u1ec1 s\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad v\u1edbi Visual Paradigm Online"},"content":{"rendered":"

Gi\u1edbi thi\u1ec7u<\/h2>\n

S\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad l\u00e0 m\u1ed9t lo\u1ea1i c\u00f4ng c\u1ee5 m\u00f4 h\u00ecnh h\u00f3a tr\u1ef1c quan \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. Ch\u00fang gi\u00fap bi\u1ec3u di\u1ec5n c\u1ea5u tr\u00fac v\u00e0 h\u00e0nh vi c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ho\u1eb7c \u1ee9ng d\u1ee5ng ph\u1ea7n m\u1ec1m. Trong h\u01b0\u1edbng d\u1eabn d\u00e0nh cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u n\u00e0y, ch\u00fang t\u00f4i s\u1ebd gi\u1edbi thi\u1ec7u cho b\u1ea1n s\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad v\u00e0 ch\u1ec9 cho b\u1ea1n c\u00e1ch t\u1ea1o ch\u00fang b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng Visual Paradigm Online, m\u1ed9t c\u00f4ng c\u1ee5 v\u1ebd s\u01a1 \u0111\u1ed3 tr\u1ef1c tuy\u1ebfn ph\u1ed5 bi\u1ebfn.<\/p>\n

S\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad l\u00e0 g\u00ec?<\/h2>\n

S\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a Ph\u01b0\u01a1ng ph\u00e1p Ph\u00e2n t\u00edch v\u00e0 Thi\u1ebft k\u1ebf H\u1ec7 th\u1ed1ng C\u1ea5u tr\u00fac (SSADM). Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a v\u00e0 t\u00e0i li\u1ec7u h\u00f3a c\u1ea5u tr\u00fac, quy tr\u00ecnh v\u00e0 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng. Nh\u1eefng s\u01a1 \u0111\u1ed3 n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m \u0111\u1ec3 hi\u1ec3u v\u00e0 truy\u1ec1n \u0111\u1ea1t c\u00e1c y\u00eau c\u1ea7u c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n

\"Yourdon<\/p>\n

C\u00f3 nhi\u1ec1u lo\u1ea1i s\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad, nh\u01b0ng ch\u00fang t\u00f4i s\u1ebd t\u1eadp trung v\u00e0o ba lo\u1ea1i th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u1ea5t:<\/p>\n

    \n
  1. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD):<\/strong> C\u00e1c s\u01a1 \u0111\u1ed3 DFD bi\u1ec3u di\u1ec5n c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng. Ch\u00fang hi\u1ec3n th\u1ecb c\u00e1c quy tr\u00ecnh x\u1eed l\u00fd d\u1eef li\u1ec7u v\u00e0 c\u00e1c kho d\u1eef li\u1ec7u n\u01a1i th\u00f4ng tin \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef.<\/li>\n
  2. S\u01a1 \u0111\u1ed3 Entiti-Quan h\u1ec7 (ERD):<\/strong> C\u00e1c s\u01a1 \u0111\u1ed3 ERD m\u00f4 t\u1ea3 m\u00f4 h\u00ecnh d\u1eef li\u1ec7u c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng, bao g\u1ed3m c\u00e1c th\u1ef1c th\u1ec3 (\u0111\u1ed1i t\u01b0\u1ee3ng), thu\u1ed9c t\u00ednh c\u1ee7a ch\u00fang v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang.<\/li>\n
  3. S\u01a1 \u0111\u1ed3 chuy\u1ec3n tr\u1ea1ng th\u00e1i (STD):<\/strong> C\u00e1c s\u01a1 \u0111\u1ed3 STD \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a h\u00e0nh vi c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ho\u1eb7c m\u1ed9t th\u1ef1c th\u1ec3 b\u1eb1ng c\u00e1ch hi\u1ec3n th\u1ecb c\u00e1c tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 c\u00f3 v\u00e0 c\u00e1c chuy\u1ec3n ti\u1ebfp gi\u1eefa c\u00e1c tr\u1ea1ng th\u00e1i \u0111\u00f3.<\/li>\n<\/ol>\n

    B\u1eaft \u0111\u1ea7u v\u1edbi Visual Paradigm Online<\/h2>\n

    Tr\u01b0\u1edbc khi ch\u00fang ta t\u1ea1o s\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad, h\u00e3y c\u00f9ng b\u1eaft \u0111\u1ea7u v\u1edbi Visual Paradigm Online:<\/p>\n

      \n
    1. Truy c\u1eadp trang web Visual Paradigm Online:<\/strong> Truy c\u1eadp Visual Paradigm Online<\/a> v\u00e0 \u0111\u0103ng k\u00fd t\u00e0i kho\u1ea3n mi\u1ec5n ph\u00ed n\u1ebfu b\u1ea1n ch\u01b0a c\u00f3.<\/li>\n
    2. \u0110\u0103ng nh\u1eadp:<\/strong> Sau khi \u0111\u0103ng nh\u1eadp, b\u1ea1n c\u00f3 th\u1ec3 b\u1eaft \u0111\u1ea7u t\u1ea1o s\u01a1 \u0111\u1ed3.<\/li>\n<\/ol>\n

      T\u1ea1o s\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad<\/h2>\n

      S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD)<\/h3>\n
        \n
      1. T\u1ea1o m\u1ed9t d\u1ef1 \u00e1n m\u1edbi:<\/strong> Nh\u1ea5p v\u00e0o \u201cD\u1ef1 \u00e1n m\u1edbi\u201d v\u00e0 ch\u1ecdn \u201cS\u01a1 \u0111\u1ed3\u201d trong ph\u1ea7n \u201cD\u1ef1 \u00e1n\u201d.<\/li>\n
      2. Ch\u1ecdn m\u1eabu DFD:<\/strong> Trong tr\u00ecnh ch\u1ec9nh s\u1eeda s\u01a1 \u0111\u1ed3, nh\u1ea5p v\u00e0o \u201cS\u01a1 \u0111\u1ed3 m\u1edbi\u201d v\u00e0 ch\u1ecdn m\u1eabu \u201cS\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u\u201d.<\/li>\n
      3. Th\u00eam c\u00e1c th\u00e0nh ph\u1ea7n:<\/strong> K\u00e9o v\u00e0 th\u1ea3 c\u00e1c h\u1ed9p quy tr\u00ecnh, kho d\u1eef li\u1ec7u, m\u0169i t\u00ean lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i l\u00ean b\u1ea3ng v\u1ebd c\u1ee7a b\u1ea1n. K\u1ebft n\u1ed1i ch\u00fang \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n qua h\u1ec7 th\u1ed1ng.<\/li>\n
      4. \u0110\u1eb7t nh\u00e3n cho c\u00e1c th\u00e0nh ph\u1ea7n:<\/strong> Nh\u1ea5p \u0111\u00fap v\u00e0o c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u1ec3 th\u00eam nh\u00e3n v\u00e0 m\u00f4 t\u1ea3 ch\u1ee9c n\u0103ng c\u1ee7a ch\u00fang.<\/li>\n
      5. L\u01b0u c\u00f4ng vi\u1ec7c c\u1ee7a b\u1ea1n:<\/strong>\u0110\u1eebng qu\u00ean l\u01b0u s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n th\u01b0\u1eddng xuy\u00ean.<\/li>\n<\/ol>\n

        S\u01a1 \u0111\u1ed3 Th\u1ef1c th\u1ec3 – Quan h\u1ec7 (ERD)<\/h3>\n
          \n
        1. T\u1ea1o m\u1ed9t d\u1ef1 \u00e1n m\u1edbi:<\/strong>Nh\u1ea5p v\u00e0o \u201cD\u1ef1 \u00e1n m\u1edbi\u201d v\u00e0 ch\u1ecdn \u201cS\u01a1 \u0111\u1ed3\u201d trong ph\u1ea7n \u201cD\u1ef1 \u00e1n\u201d.<\/li>\n
        2. Ch\u1ecdn m\u1eabu ERD:<\/strong>Trong tr\u00ecnh ch\u1ec9nh s\u1eeda s\u01a1 \u0111\u1ed3, nh\u1ea5p v\u00e0o \u201cS\u01a1 \u0111\u1ed3 m\u1edbi\u201d v\u00e0 ch\u1ecdn m\u1eabu \u201cS\u01a1 \u0111\u1ed3 Th\u1ef1c th\u1ec3 – Quan h\u1ec7\u201d.<\/li>\n
        3. Th\u00eam th\u1ef1c th\u1ec3 v\u00e0 m\u1ed1i quan h\u1ec7:<\/strong>S\u1eed d\u1ee5ng c\u00e1c h\u00ecnh d\u1ea1ng \u0111\u1ec3 bi\u1ec3u di\u1ec5n th\u1ef1c th\u1ec3 v\u00e0 c\u00e1c \u0111\u01b0\u1eddng n\u1ed1i \u0111\u1ec3 k\u1ebft n\u1ed1i ch\u00fang v\u1edbi c\u00e1c m\u1ed1i quan h\u1ec7. X\u00e1c \u0111\u1ecbnh thu\u1ed9c t\u00ednh cho m\u1ed7i th\u1ef1c th\u1ec3.<\/li>\n
        4. \u0110\u00e1nh nh\u00e3n c\u00e1c th\u00e0nh ph\u1ea7n:<\/strong>Nh\u1ea5p \u0111\u00f4i v\u00e0o c\u00e1c th\u1ef1c th\u1ec3, m\u1ed1i quan h\u1ec7 v\u00e0 thu\u1ed9c t\u00ednh \u0111\u1ec3 th\u00eam t\u00ean v\u00e0 m\u00f4 t\u1ea3.<\/li>\n
        5. L\u01b0u c\u00f4ng vi\u1ec7c c\u1ee7a b\u1ea1n:<\/strong>L\u01b0u s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n \u0111\u1ec3 b\u1ea3o v\u1ec7 ti\u1ebfn \u0111\u1ed9 c\u00f4ng vi\u1ec7c c\u1ee7a b\u1ea1n.<\/li>\n<\/ol>\n

          S\u01a1 \u0111\u1ed3 Chuy\u1ec3n tr\u1ea1ng th\u00e1i (STD)<\/h3>\n
            \n
          1. T\u1ea1o m\u1ed9t d\u1ef1 \u00e1n m\u1edbi:<\/strong>Nh\u1ea5p v\u00e0o \u201cD\u1ef1 \u00e1n m\u1edbi\u201d v\u00e0 ch\u1ecdn \u201cS\u01a1 \u0111\u1ed3\u201d trong ph\u1ea7n \u201cD\u1ef1 \u00e1n\u201d.<\/li>\n
          2. Ch\u1ecdn m\u1eabu STD:<\/strong>Trong tr\u00ecnh ch\u1ec9nh s\u1eeda s\u01a1 \u0111\u1ed3, nh\u1ea5p v\u00e0o \u201cS\u01a1 \u0111\u1ed3 m\u1edbi\u201d v\u00e0 ch\u1ecdn m\u1eabu \u201cS\u01a1 \u0111\u1ed3 Chuy\u1ec3n tr\u1ea1ng th\u00e1i\u201d.<\/li>\n
          3. Th\u00eam tr\u1ea1ng th\u00e1i v\u00e0 chuy\u1ec3n ti\u1ebfp:<\/strong>T\u1ea1o c\u00e1c tr\u1ea1ng th\u00e1i cho h\u1ec7 th\u1ed1ng ho\u1eb7c th\u1ef1c th\u1ec3 c\u1ee7a b\u1ea1n v\u00e0 k\u1ebft n\u1ed1i ch\u00fang b\u1eb1ng c\u00e1c chuy\u1ec3n ti\u1ebfp \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1ch h\u1ec7 th\u1ed1ng thay \u0111\u1ed5i t\u1eeb tr\u1ea1ng th\u00e1i n\u00e0y sang tr\u1ea1ng th\u00e1i kh\u00e1c.<\/li>\n
          4. \u0110\u00e1nh nh\u00e3n c\u00e1c th\u00e0nh ph\u1ea7n:<\/strong>Nh\u1ea5p \u0111\u00f4i v\u00e0o c\u00e1c tr\u1ea1ng th\u00e1i v\u00e0 chuy\u1ec3n ti\u1ebfp \u0111\u1ec3 th\u00eam t\u00ean v\u00e0 m\u00f4 t\u1ea3.<\/li>\n
          5. L\u01b0u c\u00f4ng vi\u1ec7c c\u1ee7a b\u1ea1n:<\/strong>Lu\u00f4n l\u01b0u s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n \u0111\u1ec3 tr\u00e1nh m\u1ea5t c\u00f4ng vi\u1ec7c.<\/li>\n<\/ol>\n

            H\u1ecdc qua c\u00e1c v\u00ed d\u1ee5<\/h2>\n

            Visual Paradigm Online<\/a> cung c\u1ea5p m\u1ed9t lo\u1ea1t c\u00e1c m\u1eabu v\u00e0 v\u00ed d\u1ee5<\/a> \u0111\u1ec3 gi\u00fap b\u1ea1n h\u1ecdc v\u00e0 b\u1eaft \u0111\u1ea7u v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad. Kh\u00e1m ph\u00e1 th\u01b0 vi\u1ec7n m\u1eabu c\u1ee7a h\u1ecd v\u00e0 nghi\u00ean c\u1ee9u c\u00e1c s\u01a1 \u0111\u1ed3 hi\u1ec7n c\u00f3 \u0111\u1ec3 hi\u1ec3u c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed1t nh\u1ea5t v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y trong c\u00e1c d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n.\"\"<\/p>\n

            H\u00e3y nh\u1edb r\u1eb1ng th\u1ef1c h\u00e0nh l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 th\u00e0nh th\u1ea1o c\u00e1c s\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad, v\u00ec v\u1eady \u0111\u1eebng ng\u1ea7n ng\u1ea1i th\u1eed nghi\u1ec7m v\u00e0 t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 c\u1ee7a ri\u00eang b\u1ea1n \u0111\u1ec3 c\u1ee7ng c\u1ed1 hi\u1ec3u bi\u1ebft c\u1ee7a b\u1ea1n.<\/p>\n

            \u0110\u00f3 l\u00e0 t\u1ea5t c\u1ea3! B\u00e2y gi\u1edd b\u1ea1n \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u1ec1 c\u00e1c s\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad v\u00e0 bi\u1ebft c\u00e1ch t\u1ea1o ch\u00fang b\u1eb1ng Visual Paradigm Online. Ch\u00fac b\u1ea1n v\u1ebd s\u01a1 \u0111\u1ed3 vui v\u1ebb!<\/p>\n","protected":false},"excerpt":{"rendered":"

            Gi\u1edbi thi\u1ec7u S\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad l\u00e0 m\u1ed9t lo\u1ea1i c\u00f4ng c\u1ee5 m\u00f4 h\u00ecnh h\u00f3a tr\u1ef1c quan \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. Ch\u00fang gi\u00fap bi\u1ec3u di\u1ec5n c\u1ea5u tr\u00fac v\u00e0 h\u00e0nh vi c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ho\u1eb7c \u1ee9ng d\u1ee5ng ph\u1ea7n m\u1ec1m. Trong h\u01b0\u1edbng d\u1eabn d\u00e0nh cho ng\u01b0\u1eddi m\u1edbi […]<\/p>\n","protected":false},"author":1,"featured_media":11107,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[42],"tags":[],"class_list":["post-11106","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-online-diagram","loop-entry","clr"],"yoast_head":"\nH\u01b0\u1edbng d\u1eabn cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u v\u1ec1 s\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad v\u1edbi Visual Paradigm Online - Visual Paradigm Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.visual-paradigm.com\/vn\/beginners-guide-to-yourdon-and-coad-diagrams-with-visual-paradigm-online\/\" \/>\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 cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u v\u1ec1 s\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad v\u1edbi Visual Paradigm Online - Visual Paradigm Blog\" \/>\n<meta property=\"og:description\" content=\"Gi\u1edbi thi\u1ec7u S\u01a1 \u0111\u1ed3 Yourdon v\u00e0 Coad l\u00e0 m\u1ed9t lo\u1ea1i c\u00f4ng c\u1ee5 m\u00f4 h\u00ecnh h\u00f3a tr\u1ef1c quan \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. 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