{"id":1786,"date":"2026-03-24T10:17:05","date_gmt":"2026-03-24T10:17:05","guid":{"rendered":"https:\/\/www.go-diagram.com\/vi\/best-practices-clean-maintainable-entity-relationship-diagrams\/"},"modified":"2026-03-24T10:17:05","modified_gmt":"2026-03-24T10:17:05","slug":"best-practices-clean-maintainable-entity-relationship-diagrams","status":"publish","type":"post","link":"https:\/\/www.go-diagram.com\/vi\/best-practices-clean-maintainable-entity-relationship-diagrams\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn ERD: C\u00e1c Th\u1ef1c Ti\u1ec5n T\u1ed1t Nh\u1ea5t \u0111\u1ec3 T\u1ea1o Ra C\u00e1c S\u01a1 \u0110\u1ed3 Th\u1ef1c Th\u1ec3-M\u1ed1i Quan H\u1ec7 S\u1ea1ch S\u1ebd, D\u1ec5 B\u1ea3o Tr\u00ec"},"content":{"rendered":"

Thi\u1ebft k\u1ebf m\u1ed9t l\u01b0\u1ee3c \u0111\u1ed3 c\u01a1 s\u1edf d\u1eef li\u1ec7u m\u1ea1nh m\u1ebd l\u00e0 b\u01b0\u1edbc n\u1ec1n t\u1ea3ng trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m. B\u1ea3n v\u1ebd ph\u00e1c th\u1ea3o cho ki\u1ebfn tr\u00fac n\u00e0y l\u00e0 S\u01a1 \u0111\u1ed3 Th\u1ef1c th\u1ec3-M\u1ed1i quan h\u1ec7 (ERD). M\u1ed9t ERD tr\u1ef1c quan h\u00f3a c\u1ea5u tr\u00fac d\u1eef li\u1ec7u, x\u00e1c \u0111\u1ecbnh c\u00e1ch c\u00e1c ph\u1ea7n th\u00f4ng tin kh\u00e1c nhau li\u00ean k\u1ebft v\u1edbi nhau. Trong khi m\u1ed9t s\u01a1 \u0111\u1ed3 ch\u1ee9c n\u0103ng \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u, th\u00ec m\u1ed9t s\u01a1 \u0111\u1ed3 s\u1ea1ch s\u1ebd, d\u1ec5 b\u1ea3o tr\u00ec \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng v\u1eabn d\u1ec5 hi\u1ec3u v\u00e0 linh ho\u1ea1t theo th\u1eddi gian. N\u1ee3 k\u1ef9 thu\u1eadt th\u01b0\u1eddng t\u00edch t\u1ee5 kh\u00f4ng ph\u1ea3i trong ch\u00ednh m\u00e3 ngu\u1ed3n, m\u00e0 \u1edf c\u00e1c t\u00e0i li\u1ec7u v\u00e0 t\u00e0i s\u1ea3n thi\u1ebft k\u1ebf tr\u1edf n\u00ean l\u1ed7i th\u1eddi ho\u1eb7c g\u00e2y nh\u1ea7m l\u1eabn. H\u01b0\u1edbng d\u1eabn n\u00e0y n\u00eau b\u1eadt c\u00e1c nguy\u00ean t\u1eafc thi\u1ebft y\u1ebfu \u0111\u1ec3 t\u1ea1o ra c\u00e1c ERD c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua th\u1eed th\u00e1ch c\u1ee7a th\u1eddi gian.<\/p>\n

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<\/figure>\n<\/div>\n

1. Quy \u01b0\u1edbc v\u00e0 Ti\u00eau chu\u1ea9n \u0110\u1eb7t T\u00ean \ud83c\udff7\ufe0f<\/h2>\n

T\u00ean c\u1ee7a m\u1ed9t th\u1ef1c th\u1ec3 ho\u1eb7c thu\u1ed9c t\u00ednh l\u00e0 \u0111i\u1ec3m ti\u1ebfp x\u00fac \u0111\u1ea7u ti\u00ean \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 nh\u00e0 ph\u00e1t tri\u1ec3n n\u00e0o \u0111ang xem x\u00e9t l\u01b0\u1ee3c \u0111\u1ed3. Vi\u1ec7c \u0111\u1eb7t t\u00ean kh\u00f4ng nh\u1ea5t qu\u00e1n t\u1ea1o ra s\u1ef1 c\u1ea3n tr\u1edf, l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh l\u00e0m quen, v\u00e0 l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng x\u1ea3y ra l\u1ed7i trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n. M\u1ed9t chi\u1ebfn l\u01b0\u1ee3c \u0111\u1eb7t t\u00ean chu\u1ea9n h\u00f3a kh\u00f4ng ch\u1ec9 mang t\u00ednh th\u1ea9m m\u1ef9; n\u00f3 l\u00e0 m\u1ed9t giao th\u1ee9c giao ti\u1ebfp.<\/p>\n

Quy t\u1eafc \u0110\u1eb7t T\u00ean Th\u1ef1c Th\u1ec3<\/h3>\n
    \n
  • S\u1ed1 nhi\u1ec1u:<\/strong>C\u00e1c th\u1ef1c th\u1ec3 n\u00f3i chung n\u00ean \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean \u1edf d\u1ea1ng s\u1ed1 nhi\u1ec1u (v\u00ed d\u1ee5, Ng\u01b0\u1eddi d\u00f9ng<\/code>, \u0110\u01a1n h\u00e0ng<\/code>) \u0111\u1ec3 bi\u1ec3u th\u1ecb m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c b\u1ea3n ghi. C\u00e1c t\u00ean s\u1ed1 \u00edt (v\u00ed d\u1ee5, Ng\u01b0\u1eddi d\u00f9ng<\/code>) c\u00f3 th\u1ec3 ng\u1ee5 \u00fd m\u1ed9t th\u1ec3 hi\u1ec7n duy nh\u1ea5t, \u0111i\u1ec1u n\u00e0y hi\u1ebfm khi x\u1ea3y ra trong c\u00e1c b\u1ea3ng quan h\u1ec7.<\/li>\n
  • CamelCase hay SnakeCase:<\/strong>Ch\u1ecdn m\u1ed9t phong c\u00e1ch v\u00e0 \u00e1p d\u1ee5ng \u0111\u1ec1u \u0111\u1eb7n. CamelCase (v\u00ed d\u1ee5, KhachHangDonHang<\/code>) ph\u1ed5 bi\u1ebfn trong ng\u1eef c\u1ea3nh h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng, trong khi SnakeCase (v\u00ed d\u1ee5, khach_hang_don_hang<\/code>) th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng SQL. Tr\u00e1nh k\u1ebft h\u1ee3p c\u00e1c phong c\u00e1ch.<\/li>\n
  • T\u00ednh m\u00f4 t\u1ea3:<\/strong>T\u00ean ph\u1ea3i m\u00f4 t\u1ea3 d\u1eef li\u1ec7u ch\u1ee9a b\u00ean trong. Tr\u00e1nh c\u00e1c vi\u1ebft t\u1eaft nh\u01b0 tbl_khach_hang<\/code> ho\u1eb7c don<\/code>. N\u1ebfu vi\u1ebft t\u1eaft l\u00e0 c\u1ea7n thi\u1ebft, h\u00e3y \u0111\u1ecbnh ngh\u0129a m\u1ed9t t\u1eeb \u0111i\u1ec3n. \u01afu ti\u00ean Kh\u00e1ch h\u00e0ng<\/code> h\u01a1n Khach<\/code>.<\/li>\n
  • Tr\u00e1nh c\u00e1c T\u1eeb D\u1ef1 Ph\u00f2ng:<\/strong> \u0110\u1ea3m b\u1ea3o t\u00ean th\u1ef1c th\u1ec3 kh\u00f4ng xung \u0111\u1ed9t v\u1edbi c\u00e1c t\u1eeb kh\u00f3a c\u01a1 s\u1edf d\u1eef li\u1ec7u (v\u00ed d\u1ee5: Nh\u00f3m<\/code>, \u0110\u01a1n h\u00e0ng<\/code>, Kh\u00f3a<\/code>). N\u1ebfu xung \u0111\u1ed9t l\u00e0 kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi, h\u00e3y bao t\u00ean trong d\u1ea5u ngo\u1eb7c k\u00e9p ho\u1eb7c s\u1eed d\u1ee5ng ti\u1ec1n t\u1ed1, m\u1eb7c d\u00f9 vi\u1ec7c \u0111\u1ed5i t\u00ean l\u00e0 \u01b0u ti\u00ean h\u01a1n.<\/li>\n<\/ul>\n

    Quy t\u1eafc \u0111\u1eb7t t\u00ean thu\u1ed9c t\u00ednh<\/h3>\n
      \n
    • Ti\u00eau chu\u1ea9n ch\u1eef th\u01b0\u1eddng:<\/strong> S\u1eed d\u1ee5ng ch\u1eef th\u01b0\u1eddng cho c\u00e1c thu\u1ed9c t\u00ednh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u00f4ng ph\u00e2n bi\u1ec7t hoa th\u01b0\u1eddng tr\u00ean c\u00e1c h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00e1c nhau. FirstName<\/code> n\u00ean l\u00e0 first_name<\/code>.<\/li>\n
    • Ti\u1ec1n t\u1ed1 kh\u00f3a ngo\u1ea1i:<\/strong> Khi tham chi\u1ebfu \u0111\u1ebfn m\u1ed9t th\u1ef1c th\u1ec3 kh\u00e1c, kh\u00f3a ngo\u1ea1i n\u00ean ph\u00f9 h\u1ee3p v\u1edbi t\u00ean kh\u00f3a ch\u00ednh c\u1ee7a th\u1ef1c th\u1ec3 \u0111\u01b0\u1ee3c tham chi\u1ebfu, th\u01b0\u1eddng c\u00f3 h\u1eadu t\u1ed1 ch\u1ec9 ngu\u1ed3n ho\u1eb7c ti\u1ec1n t\u1ed1 ch\u1ec9 \u0111\u00edch. V\u00ed d\u1ee5, n\u1ebfu b\u1ea3ng Users<\/code> c\u00f3 m\u1ed9t user_id<\/code>, th\u00ec b\u1ea3ng Orders<\/code> n\u00ean tham chi\u1ebfu n\u00f3 nh\u01b0 l\u00e0 user_id<\/code>.<\/li>\n
    • R\u00f5 r\u00e0ng v\u1ec1 ki\u1ec3u Boolean:<\/strong> C\u00e1c thu\u1ed9c t\u00ednh ki\u1ec3u Boolean n\u00ean \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean nh\u01b0 c\u00e2u h\u1ecfi ho\u1eb7c c\u1edd r\u00f5 r\u00e0ng (v\u00ed d\u1ee5: is_active<\/code>, has_subscription<\/code>) thay v\u00ec c\u00e1c c\u1edd chung chung nh\u01b0 tr\u1ea1ng th\u00e1i<\/code> ho\u1eb7c c\u1edd<\/code>.<\/li>\n<\/ul>\n

      2. T\u00ednh to\u00e0n v\u1eb9n c\u1ea5u tr\u00fac v\u00e0 chu\u1ea9n h\u00f3a \u2696\ufe0f<\/h2>\n

      M\u1ed9t s\u01a1 \u0111\u1ed3 tr\u00f4ng t\u1ed1t nh\u01b0ng vi ph\u1ea1m c\u00e1c nguy\u00ean t\u1eafc chu\u1ea9n h\u00f3a s\u1ebd d\u1eabn \u0111\u1ebfn c\u00e1c b\u1ea5t th\u01b0\u1eddng d\u1eef li\u1ec7u. T\u00ednh d\u1ec5 b\u1ea3o tr\u00ec \u0111\u00f2i h\u1ecfi c\u1ea5u tr\u00fac ph\u1ea3i h\u1ed7 tr\u1ee3 truy v\u1ea5n hi\u1ec7u qu\u1ea3 v\u00e0 t\u1ed1i thi\u1ec3u h\u00f3a s\u1ef1 tr\u00f9ng l\u1eb7p.<\/p>\n

      Kh\u00f3a ch\u00ednh<\/h3>\n
        \n
      • Khai b\u00e1o r\u00f5 r\u00e0ng:<\/strong>M\u1ed7i b\u1ea3ng ph\u1ea3i c\u00f3 kh\u00f3a ch\u00ednh \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng. Kh\u00f4ng bao gi\u1edd d\u1ef1a v\u00e0o b\u1ed9 \u0111\u1ed9ng c\u01a1 c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng t\u1ea1o kh\u00f3a m\u00e0 kh\u00f4ng c\u00f3 t\u00e0i li\u1ec7u.<\/li>\n
      • Kh\u00f3a gi\u1ea3:<\/strong>C\u00e2n nh\u1eafc s\u1eed d\u1ee5ng kh\u00f3a gi\u1ea3 (s\u1ed1 nguy\u00ean t\u1ef1 t\u0103ng ho\u1eb7c UUID) thay v\u00ec kh\u00f3a t\u1ef1 nhi\u00ean (nh\u01b0 \u0111\u1ecba ch\u1ec9 email ho\u1eb7c s\u1ed1 an sinh x\u00e3 h\u1ed9i). Kh\u00f3a t\u1ef1 nhi\u00ean c\u00f3 th\u1ec3 thay \u0111\u1ed5i, d\u1eabn \u0111\u1ebfn vi\u1ec7c c\u1eadp nh\u1eadt lan truy\u1ec1n tr\u00ean to\u00e0n b\u1ed9 c\u01a1 s\u1edf d\u1eef li\u1ec7u, \u0111i\u1ec1u n\u00e0y r\u1ee7i ro v\u00e0 t\u1ed1n k\u00e9m.<\/li>\n
      • Kh\u00f3a k\u1ebft h\u1ee3p:<\/strong>Ch\u1ec9 s\u1eed d\u1ee5ng kh\u00f3a k\u1ebft h\u1ee3p khi th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft v\u1ec1 m\u1eb7t logic (v\u00ed d\u1ee5: b\u1ea3ng giao nhau nhi\u1ec1u-nhi\u1ec1u). Tr\u00e1nh s\u1eed d\u1ee5ng ch\u00fang cho c\u00e1c th\u1ef1c th\u1ec3 ch\u00ednh v\u00ec ch\u00fang l\u00e0m ph\u1ee9c t\u1ea1p vi\u1ec7c l\u1eadp ch\u1ec9 m\u1ee5c v\u00e0 m\u1ed1i quan h\u1ec7.<\/li>\n<\/ul>\n

        Kh\u00f3a ngo\u1ea1i v\u00e0 t\u00ednh to\u00e0n v\u1eb9n tham chi\u1ebfu<\/h3>\n
          \n
        • X\u00e1c \u0111\u1ecbnh m\u1ed1i quan h\u1ec7:<\/strong>M\u1ed7i kh\u00f3a ngo\u1ea1i ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng trong s\u01a1 \u0111\u1ed3. Kh\u00f4ng \u0111\u1ec3 m\u1ed1i quan h\u1ec7 ch\u1ec9 ng\u1ea7m hi\u1ec3u qua quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean.<\/li>\n
        • Quy t\u1eafc lan truy\u1ec1n:<\/strong>T\u00e0i li\u1ec7u h\u00f3a h\u00e0nh vi c\u1ee7a thao t\u00e1c x\u00f3a v\u00e0 c\u1eadp nh\u1eadt. Khi b\u1ea3n ghi cha b\u1ecb x\u00f3a, b\u1ea3n ghi con c\u00f3 n\u00ean b\u1ecb x\u00f3a kh\u00f4ng? C\u00f3 n\u00ean \u0111\u1eb7t th\u00e0nh null kh\u00f4ng? C\u00e1c quy t\u1eafc n\u00e0y (CASCADE, SET NULL, RESTRICT) ph\u1ea3i \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng trong t\u00e0i li\u1ec7u thi\u1ebft k\u1ebf.<\/li>\n
        • Tr\u00e1nh c\u00e1c ph\u1ee5 thu\u1ed9c v\u00f2ng:<\/strong>\u0110\u1ea3m b\u1ea3o c\u00e1c m\u1ed1i quan h\u1ec7 kh\u00f4ng t\u1ea1o ra c\u00e1c ph\u1ee5 thu\u1ed9c v\u00f2ng khi\u1ebfn vi\u1ec7c k\u1ebft h\u1ee3p (join) tr\u1edf n\u00ean kh\u00f4ng th\u1ec3 ho\u1eb7c hi\u1ec7u su\u1ea5t kh\u00f4ng th\u1ec3 d\u1ef1 \u0111o\u00e1n.<\/li>\n<\/ul>\n

          3. \u0110\u1ed9 r\u00f5 r\u00e0ng h\u00ecnh \u1ea3nh v\u00e0 b\u1ed1 c\u1ee5c \ud83c\udfa8<\/h2>\n

          ERD l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 h\u00ecnh \u1ea3nh. N\u1ebfu b\u1ed1 c\u1ee5c h\u1ed7n lo\u1ea1n, m\u00f4 h\u00ecnh d\u1eef li\u1ec7u s\u1ebd kh\u00f3 hi\u1ec3u. Th\u1ee9 t\u1ef1 h\u00ecnh \u1ea3nh gi\u00fap ng\u01b0\u1eddi \u0111\u1ecdc hi\u1ec3u ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng ch\u1ec9 trong m\u1ed9t c\u00e1i nh\u00ecn.<\/p>\n

          S\u1eafp x\u1ebfp v\u00e0 t\u1ed5 ch\u1ee9c<\/h3>\n
            \n
          • S\u1eafp x\u1ebfp theo ch\u1ee9c n\u0103ng:<\/strong>Gom c\u00e1c th\u1ef1c th\u1ec3 li\u00ean quan l\u1ea1i v\u1edbi nhau. V\u00ed d\u1ee5: \u0111\u1eb7t t\u1ea5t c\u1ea3 c\u00e1c b\u1ea3ng qu\u1ea3n l\u00fd ng\u01b0\u1eddi d\u00f9ng g\u1ea7n nhau, v\u00e0 t\u1ea5t c\u1ea3 c\u00e1c b\u1ea3ng giao d\u1ecbch \u1edf m\u1ed9t c\u1ee5m ri\u00eang bi\u1ec7t.<\/li>\n
          • T\u00e1ch bi\u1ec7t theo logic:<\/strong>T\u00e1ch bi\u1ec7t d\u1eef li\u1ec7u ch\u1ec9 \u0111\u1ecdc kh\u1ecfi d\u1eef li\u1ec7u c\u00f3 nhi\u1ec1u thao t\u00e1c ghi. N\u1ebfu h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n c\u00f3 c\u00e1c b\u1ea3ng b\u00e1o c\u00e1o, h\u00e3y ph\u00e2n bi\u1ec7t ch\u00fang r\u00f5 r\u00e0ng b\u1eb1ng h\u00ecnh \u1ea3nh so v\u1edbi c\u00e1c b\u1ea3ng v\u1eadn h\u00e0nh.<\/li>\n
          • D\u00f2ng ch\u1ea3y \u0111\u1ecbnh h\u01b0\u1edbng:<\/strong>S\u1eafp x\u1ebfp s\u01a1 \u0111\u1ed3 \u0111\u1ec3 g\u1ee3i \u00fd lu\u1ed3ng d\u1eef li\u1ec7u. Th\u01b0\u1eddng th\u00ec \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 \u0111\u1eb7t d\u1eef li\u1ec7u tham chi\u1ebfu c\u1ed1t l\u00f5i \u1edf tr\u00ean ho\u1eb7c b\u00ean tr\u00e1i, v\u00e0 d\u1eef li\u1ec7u giao d\u1ecbch ho\u1eb7c nh\u1eadt k\u00fd \u1edf d\u01b0\u1edbi ho\u1eb7c b\u00ean ph\u1ea3i.<\/li>\n<\/ul>\n

            C\u00e1c \u0111\u01b0\u1eddng k\u1ebft n\u1ed1i<\/h3>\n
              \n
            • \u0110\u01b0\u1eddng d\u1eabn vu\u00f4ng g\u00f3c:<\/strong>S\u1eed d\u1ee5ng c\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng vu\u00f4ng g\u00f3c thay v\u00ec \u0111\u01b0\u1eddng ch\u00e9o khi c\u00f3 th\u1ec3. C\u00e1c \u0111\u01b0\u1eddng ch\u00e9o th\u01b0\u1eddng xuy\u00ean giao nhau, t\u1ea1o ra ti\u1ebfng \u1ed3n th\u1ecb gi\u00e1c.<\/li>\n
            • T\u1ed1i thi\u1ec3u h\u00f3a c\u00e1c \u0111i\u1ec3m giao nhau:<\/strong>\u0110i\u1ec1u ch\u1ec9nh v\u1ecb tr\u00ed c\u00e1c th\u1ef1c th\u1ec3 \u0111\u1ec3 gi\u1ea3m s\u1ed1 l\u1ea7n c\u00e1c \u0111\u01b0\u1eddng quan h\u1ec7 giao nhau. C\u00e1c \u0111\u01b0\u1eddng giao nhau l\u00e0m che khu\u1ea5t \u0111\u01b0\u1eddng \u0111i c\u1ee7a m\u1ed1i quan h\u1ec7.<\/li>\n
            • K\u00fd hi\u1ec7u cardinality:<\/strong>S\u1eed d\u1ee5ng k\u00fd hi\u1ec7u chu\u1ea9n (Crow\u2019s Foot, Chen ho\u1eb7c UML) m\u1ed9t c\u00e1ch nh\u1ea5t qu\u00e1n. \u0110\u1ea3m b\u1ea3o c\u00e1c \u0111\u1ea7u \u201cm\u1ed9t\u201d v\u00e0 \u201cnhi\u1ec1u\u201d \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u r\u00f5 r\u00e0ng. Kh\u00f4ng n\u00ean ch\u1ec9 d\u1ef1a v\u00e0o \u0111\u1ed9 d\u00e0y ho\u1eb7c m\u00e0u s\u1eafc \u0111\u01b0\u1eddng \u0111\u1ec3 bi\u1ec3u th\u1ecb cardinality.<\/li>\n<\/ul>\n

              4. T\u00e0i li\u1ec7u v\u00e0 d\u1eef li\u1ec7u m\u00f4 t\u1ea3 \ud83d\udcdd<\/h2>\n

              Ch\u1ec9 c\u00f3 s\u01a1 \u0111\u1ed3 th\u00ec ch\u01b0a \u0111\u1ee7. D\u1eef li\u1ec7u m\u00f4 t\u1ea3 cung c\u1ea5p b\u1ed1i c\u1ea3nh c\u1ea7n thi\u1ebft \u0111\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c l\u00fd do \u0111\u1eb1ng sau c\u00e1c quy\u1ebft \u0111\u1ecbnh thi\u1ebft k\u1ebf.<\/p>\n

              Ghi ch\u00fa v\u00e0 ch\u00fa th\u00edch<\/h3>\n
                \n
              • Logic kinh doanh:<\/strong>Th\u00eam ghi ch\u00fa gi\u1ea3i th\u00edch c\u00e1c quy t\u1eafc kinh doanh c\u1ee5 th\u1ec3. V\u00ed d\u1ee5, m\u1ed9t ghi ch\u00fa tr\u00ean b\u1ea3ng Orders<\/code>c\u00f3 th\u1ec3 gi\u1ea3i th\u00edch r\u1eb1ng m\u1ed9t \u0111\u01a1n h\u00e0ng kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c giao n\u1ebfu tr\u1ea1ng th\u00e1i thanh to\u00e1n kh\u00f4ng ph\u1ea3i l\u00e0 ho\u00e0n t\u1ea5t<\/code>.<\/li>\n
              • R\u00e0ng bu\u1ed9c:<\/strong>T\u00e0i li\u1ec7u h\u00f3a c\u00e1c r\u00e0ng bu\u1ed9c duy nh\u1ea5t, r\u00e0ng bu\u1ed9c ki\u1ec3m tra v\u00e0 gi\u00e1 tr\u1ecb m\u1eb7c \u0111\u1ecbnh. Nh\u1eefng \u0111i\u1ec1u n\u00e0y th\u01b0\u1eddng b\u1ecb m\u1ea5t khi ch\u1ec9 xem s\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac.<\/li>\n
              • C\u1edd h\u1ebft h\u1ea1n s\u1eed d\u1ee5ng:<\/strong>N\u1ebfu m\u1ed9t th\u1ef1c th\u1ec3 ho\u1eb7c thu\u1ed9c t\u00ednh \u0111\u00e3 b\u1ecb lo\u1ea1i b\u1ecf nh\u01b0ng \u0111\u01b0\u1ee3c gi\u1eef l\u1ea1i \u0111\u1ec3 t\u01b0\u01a1ng th\u00edch ng\u01b0\u1ee3c, h\u00e3y \u0111\u00e1nh d\u1ea5u r\u00f5 r\u00e0ng. Kh\u00f4ng \u0111\u01b0\u1ee3c \u1ea9n \u0111i, v\u00ec n\u00f3 v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tham chi\u1ebfu trong m\u00e3 ngu\u1ed3n c\u0169.<\/li>\n<\/ul>\n

                Ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n<\/h3>\n
                  \n
                • S\u1ed5 nh\u1eadt k\u00fd thay \u0111\u1ed5i:<\/strong>Duy tr\u00ec l\u1ecbch s\u1eed thay \u0111\u1ed5i. Ai \u0111\u00e3 s\u1eeda \u0111\u1ed5i s\u01a1 \u0111\u1ed3? Khi n\u00e0o? V\u00ec sao? \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 g\u1ee1 l\u1ed7i c\u00e1c v\u1ea5n \u0111\u1ec1 s\u1ea3n xu\u1ea5t.<\/li>\n
                • S\u1ed1 phi\u00ean b\u1ea3n:<\/strong>G\u1eafn nh\u00e3n s\u01a1 \u0111\u1ed3 b\u1eb1ng s\u1ed1 phi\u00ean b\u1ea3n (v\u00ed d\u1ee5: v1.0, v1.1). \u0110i\u1ec1u n\u00e0y ng\u0103n ng\u1eeba nh\u1ea7m l\u1eabn khi c\u00f3 nhi\u1ec1u thao t\u00e1c di chuy\u1ec3n c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111ang di\u1ec5n ra.<\/li>\n<\/ul>\n

                  5. Quy tr\u00ecnh h\u1ee3p t\u00e1c v\u00e0 ki\u1ec3m tra \ud83e\udd1d<\/h2>\n

                  Thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u hi\u1ebfm khi l\u00e0 c\u00f4ng vi\u1ec7c \u0111\u1ed9c l\u1eadp. N\u00f3 \u0111\u00f2i h\u1ecfi s\u1ef1 \u0111\u00f3ng g\u00f3p t\u1eeb c\u00e1c k\u1ef9 s\u01b0 backend, chuy\u00ean gia ph\u00e2n t\u00edch d\u1eef li\u1ec7u v\u00e0 c\u00e1c b\u00ean li\u00ean quan kinh doanh.<\/p>\n

                  \u0110\u00e1nh gi\u00e1 t\u1eeb \u0111\u1ed3ng nghi\u1ec7p<\/h3>\n
                    \n
                  • Ki\u1ec3m to\u00e1n \u0111\u1ed9c l\u1eadp:<\/strong>C\u00f3 m\u1ed9t nh\u00e0 ph\u00e1t tri\u1ec3n kh\u00f4ng vi\u1ebft thi\u1ebft k\u1ebf \u0111\u00f3 h\u00e3y xem x\u00e9t l\u1ea1i. Nh\u1eefng \u0111\u00f4i m\u1eaft m\u1edbi s\u1ebd ph\u00e1t hi\u1ec7n ra c\u00e1c kho\u1ea3ng tr\u1ed1ng logic v\u00e0 s\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n trong t\u00ean g\u1ecdi.<\/li>\n
                  • X\u00e1c th\u1ef1c t\u1eeb chuy\u00ean gia l\u0129nh v\u1ef1c:<\/strong> \u0110\u1ea3m b\u1ea3o m\u00f4 h\u00ecnh ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c l\u0129nh v\u1ef1c kinh doanh. M\u1ed9t nh\u00e0 thi\u1ebft k\u1ebf d\u1eef li\u1ec7u c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y m\u1ed9t b\u1ea3ng, nh\u01b0ng m\u1ed9t chuy\u00ean gia ph\u00e2n t\u00edch kinh doanh bi\u1ebft li\u1ec7u b\u1ea3ng \u0111\u00f3 c\u00f3 \u0111\u1ea1i di\u1ec7n cho quy tr\u00ecnh th\u1ef1c t\u1ebf hay kh\u00f4ng.<\/li>\n<\/ul>\n

                    C\u00f4ng c\u1ee5 v\u00e0 Ti\u00eau chu\u1ea9n<\/h3>\n
                      \n
                    • M\u1eabu chu\u1ea9n h\u00f3a:<\/strong>S\u1eed d\u1ee5ng m\u1eabu cho t\u1ea5t c\u1ea3 s\u01a1 \u0111\u1ed3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n gi\u1eefa c\u00e1c d\u1ef1 \u00e1n kh\u00e1c nhau trong t\u1ed5 ch\u1ee9c.<\/li>\n
                    • X\u00e1c th\u1ef1c t\u1ef1 \u0111\u1ed9ng:<\/strong>S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 \u0111\u1ec3 x\u00e1c th\u1ef1c s\u01a1 \u0111\u1ed3 so v\u1edbi l\u01b0\u1ee3c \u0111\u1ed3 c\u01a1 s\u1edf d\u1eef li\u1ec7u th\u1ef1c t\u1ebf. S\u1ef1 ch\u00eanh l\u1ec7ch gi\u1eefa s\u01a1 \u0111\u1ed3 v\u00e0 m\u00e3 ngu\u1ed3n l\u00e0 nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y l\u1ed7i.<\/li>\n<\/ul>\n

                      6. Chu k\u1ef3 b\u1ea3o tr\u00ec \ud83d\udd04<\/h2>\n

                      Sau khi tri\u1ec3n khai, m\u1ed9t s\u01a1 \u0111\u1ed3 ERD kh\u00f4ng ph\u1ea3i l\u00e0 t\u0129nh. N\u00f3 thay \u0111\u1ed5i theo th\u1eddi gian. Vi\u1ec7c duy tr\u00ec s\u1ef1 thay \u0111\u1ed5i n\u00e0y \u0111\u00f2i h\u1ecfi s\u1ef1 k\u1ef7 lu\u1eadt.<\/p>\n

                      Qu\u1ea3n l\u00fd s\u1ef1 l\u1ec7ch l\u01b0\u1ee3c \u0111\u1ed3<\/h3>\n
                        \n
                      • \u0110\u1ed3ng b\u1ed9 \u0111\u1ecbnh k\u1ef3:<\/strong>T\u00e1i t\u1ea1o s\u01a1 \u0111\u1ed3 \u0111\u1ecbnh k\u1ef3 t\u1eeb c\u01a1 s\u1edf d\u1eef li\u1ec7u s\u1ea3n xu\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi th\u1ef1c t\u1ebf.<\/li>\n
                      • Script di chuy\u1ec3n:<\/strong>M\u1ecdi thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi s\u01a1 \u0111\u1ed3 ERD ph\u1ea3i \u0111i k\u00e8m v\u1edbi m\u1ed9t script di chuy\u1ec3n. Kh\u00f4ng bao gi\u1edd thay \u0111\u1ed5i c\u01a1 s\u1edf d\u1eef li\u1ec7u th\u1ee7 c\u00f4ng m\u00e0 kh\u00f4ng c\u1eadp nh\u1eadt s\u01a1 \u0111\u1ed3.<\/li>\n
                      • Ph\u00e2n t\u00edch t\u00e1c \u0111\u1ed9ng:<\/strong> Tr\u01b0\u1edbc khi thay \u0111\u1ed5i kh\u00f3a ch\u00ednh ho\u1eb7c x\u00f3a m\u1ed9t c\u1ed9t, h\u00e3y ph\u00e2n t\u00edch c\u00e1c b\u00e1o c\u00e1o ho\u1eb7c \u1ee9ng d\u1ee5ng ph\u00eda sau n\u00e0o ph\u1ee5 thu\u1ed9c v\u00e0o n\u00f3.<\/li>\n<\/ul>\n

                        Xem x\u00e9t v\u1ec1 hi\u1ec7u su\u1ea5t<\/h3>\n
                          \n
                        • Chi\u1ebfn l\u01b0\u1ee3c ch\u1ec9 m\u1ee5c:<\/strong> Ghi ch\u00e9p c\u00e1c c\u1ed9t n\u00e0o \u0111\u01b0\u1ee3c ch\u1ec9 m\u1ee5c v\u00e0 l\u00fd do t\u1ea1i sao. \u0110i\u1ec1u n\u00e0y gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n t\u01b0\u01a1ng lai hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1c quy\u1ebft \u0111\u1ecbnh t\u1ed1i \u01b0u h\u00f3a truy v\u1ea5n.<\/li>\n
                        • Chia t\u00e1ch:<\/strong> N\u1ebfu m\u1ed9t b\u1ea3ng r\u1ea5t l\u1edbn, h\u00e3y ghi ch\u00fa chi\u1ebfn l\u01b0\u1ee3c chia t\u00e1ch trong s\u01a1 \u0111\u1ed3. \u0110i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy v\u1ea5n v\u00e0 b\u1ea3o tr\u00ec.<\/li>\n<\/ul>\n

                          7. Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 m\u1eabu ch\u1ed1ng l\u1ea1i t\u1ed1t nh\u1ea5t \ud83d\udeab<\/h2>\n

                          Tr\u00e1nh sai l\u1ea7m quan tr\u1ecdng kh\u00f4ng k\u00e9m g\u00ec vi\u1ec7c tu\u00e2n th\u1ee7 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng so s\u00e1nh gi\u1eefa nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1c c\u00e1ch ti\u1ebfp c\u1eadn \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb.<\/p>\n\n\n\n\n\n\n\n\n\n
                          Sai l\u1ea7m<\/th>\nC\u00e1ch ti\u1ebfp c\u1eadn \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb<\/th>\nL\u00fd do<\/th>\n<\/tr>\n<\/thead>\n
                          T\u00ean chung chung<\/strong>
                          v\u00ed d\u1ee5:B\u1ea3ng1<\/code>, D\u1eef li\u1ec7u<\/code><\/td>\n                          		T\u00ean c\u1ee5 th\u1ec3<\/strong>
                          v\u00ed d\u1ee5, CustomerProfile<\/code>, ProductInventory<\/code><\/td>\n                          		T\u00ean c\u1ee5 th\u1ec3 gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n hi\u1ec3u \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u m\u00e0 kh\u00f4ng c\u1ea7n t\u00e0i li\u1ec7u b\u00ean ngo\u00e0i.<\/td>\n<\/tr>\n
                          C\u00e1c m\u1ed1i quan h\u1ec7 \u1ea9n<\/strong>
                          Kh\u00f4ng c\u00f3 \u0111\u01b0\u1eddng n\u1ed1i gi\u1eefa c\u00e1c b\u1ea3ng<\/td>\n                          		Kh\u00f3a ngo\u1ea1i r\u00f5 r\u00e0ng<\/strong>
                          C\u00e1c \u0111\u01b0\u1eddng n\u1ed1i \u0111\u01b0\u1ee3c v\u1ebd r\u00f5 r\u00e0ng v\u00e0 c\u00f3 nh\u00e3n<\/td>\n                          		C\u00e1c m\u1ed1i quan h\u1ec7 ng\u1ea7m d\u1eabn \u0111\u1ebfn vi ph\u1ea1m t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 g\u00e2y nh\u1ea7m l\u1eabn.<\/td>\n<\/tr>\n
                          Chu\u1ea9n h\u00f3a qu\u00e1 m\u1ee9c<\/strong>
                          Qu\u00e1 nhi\u1ec1u b\u1ea3ng nh\u1ecf<\/td>\n                          		Chu\u1ea9n h\u00f3a ph\u00f9 h\u1ee3p<\/strong>
                          C\u00e2n b\u1eb1ng gi\u1eefa 3NF v\u00e0 nhu c\u1ea7u hi\u1ec7u su\u1ea5t<\/td>\n                          		Vi\u1ec7c k\u1ebft h\u1ee3p qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 hi\u1ec7u su\u1ea5t truy v\u1ea5n.<\/td>\n<\/tr>\n
                          Thi\u1ebfu d\u1eef li\u1ec7u m\u00f4 t\u1ea3<\/strong>
                          Kh\u00f4ng c\u00f3 m\u00f4 t\u1ea3 hay ki\u1ec3u d\u1eef li\u1ec7u<\/td>\n                          		D\u1eef li\u1ec7u m\u00f4 t\u1ea3 phong ph\u00fa<\/strong>
                          Bao g\u1ed3m ki\u1ec3u d\u1eef li\u1ec7u, r\u00e0ng bu\u1ed9c v\u00e0 ch\u00fa th\u00edch<\/td>\n                          		D\u1eef li\u1ec7u m\u00f4 t\u1ea3 l\u00e0 thi\u1ebft y\u1ebfu cho vi\u1ec7c l\u00e0m quen v\u00e0 b\u1ea3o tr\u00ec d\u00e0i h\u1ea1n.<\/td>\n<\/tr>\n
                          Gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c ghi c\u1ee9ng<\/strong>
                          M\u00e3 tr\u1ea1ng th\u00e1i nh\u01b0 1<\/code>, 2<\/code> trong s\u01a1 \u0111\u1ed3<\/td>\n                          		Ki\u1ec3u li\u1ec7t k\u00ea<\/strong>
                          S\u1eed d\u1ee5ng b\u1ea3ng tra c\u1ee9u ho\u1eb7c ki\u1ec3u li\u1ec7t k\u00ea r\u00f5 r\u00e0ng<\/td>\n                          		C\u00e1c s\u1ed1 nguy\u00ean ghi c\u1ee9ng s\u1ebd v\u00f4 ngh\u0129a n\u1ebfu kh\u00f4ng c\u00f3 ch\u00fa th\u00edch v\u00e0 d\u1ec5 b\u1ecb thay \u0111\u1ed5i.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                          K\u1ebft lu\u1eadn v\u1ec1 Kh\u1ea3 n\u0103ng T\u1ed3n t\u1ea1i D\u00e0i h\u1ea1n<\/h2>\n

                          Vi\u1ec7c t\u1ea1o ra m\u1ed9t s\u01a1 \u0111\u1ed3 ERD s\u1ea1ch l\u00e0 m\u1ed9t kho\u1ea3n \u0111\u1ea7u t\u01b0 cho t\u01b0\u01a1ng lai c\u1ee7a d\u1ef1 \u00e1n. N\u00f3 gi\u1ea3m t\u1ea3i nh\u1eadn th\u1ee9c cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, t\u1ed1i thi\u1ec3u h\u00f3a r\u1ee7i ro h\u1ecfng d\u1eef li\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i vi\u1ebft l\u1ea1i ho\u00e0n to\u00e0n. B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 nghi\u00eam ng\u1eb7t c\u00e1c quy t\u1eafc \u0111\u1eb7t t\u00ean, duy tr\u00ec s\u1ef1 r\u00f5 r\u00e0ng v\u1ec1 m\u1eb7t h\u00ecnh \u1ea3nh v\u00e0 ghi ch\u00fa metadata, b\u1ea1n s\u1ebd x\u00e2y d\u1ef1ng n\u1ec1n t\u1ea3ng h\u1ed7 tr\u1ee3 s\u1ef1 ph\u00e1t tri\u1ec3n m\u1edf r\u1ed9ng. C\u00f4ng s\u1ee9c b\u1ecf ra cho thi\u1ebft k\u1ebf h\u00f4m nay s\u1ebd ng\u0103n ng\u1eeba h\u1ed7n lo\u1ea1n trong b\u1ea3o tr\u00ec t\u01b0\u01a1ng lai.<\/p>\n

                          H\u00e3y nh\u1edb r\u1eb1ng s\u01a1 \u0111\u1ed3 ERD l\u00e0 m\u1ed9t t\u00e0i li\u1ec7u s\u1ed1ng. N\u00f3 \u0111\u00f2i h\u1ecfi c\u00f9ng m\u1ee9c \u0111\u1ed9 ch\u0103m s\u00f3c v\u00e0 ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n nh\u01b0 m\u00e3 ngu\u1ed3n m\u00e0 n\u00f3 \u0111\u1ea1i di\u1ec7n. Nh\u1eefng cu\u1ed9c xem x\u00e9t \u0111\u1ecbnh k\u1ef3, tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n v\u00e0 cam k\u1ebft ch\u00ednh x\u00e1c s\u1ebd gi\u00fap ki\u1ebfn tr\u00fac d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n v\u1eefng ch\u1eafc v\u00e0 \u0111\u1ed9i ng\u0169 l\u00e0m vi\u1ec7c hi\u1ec7u qu\u1ea3.<\/p>\n

                          Nh\u1eefng \u0111i\u1ec3m ch\u00ednh c\u1ea7n l\u01b0u \u00fd \u2705<\/h2>\n
                            \n
                          • T\u00ednh nh\u1ea5t qu\u00e1n l\u00e0 then ch\u1ed1t:<\/strong> Duy tr\u00ec m\u1ed9t quy t\u1eafc \u0111\u1eb7t t\u00ean v\u00e0 m\u1ed9t phong c\u00e1ch h\u00ecnh \u1ea3nh nh\u1ea5t qu\u00e1n trong su\u1ed1t to\u00e0n b\u1ed9 d\u1ef1 \u00e1n.<\/li>\n
                          • Ghi ch\u00e9p m\u1ecdi th\u1ee9:<\/strong> \u0110\u1eebng cho r\u1eb1ng m\u00e3 ngu\u1ed3n t\u1ef1 gi\u1ea3i th\u00edch. H\u00e3y th\u00eam ch\u00fa th\u00edch cho logic kinh doanh v\u00e0 c\u00e1c r\u00e0ng bu\u1ed9c.<\/li>\n
                          • X\u00e1c minh th\u01b0\u1eddng xuy\u00ean:<\/strong> \u0110\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 kh\u1edbp v\u1edbi tr\u1ea1ng th\u00e1i th\u1ef1c t\u1ebf c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec3 ng\u0103n ng\u1eeba s\u1ef1 l\u1ec7ch l\u1ea1c.<\/li>\n
                          • \u01afu ti\u00ean kh\u1ea3 n\u0103ng \u0111\u1ecdc:<\/strong> N\u1ebfu m\u1ed9t s\u01a1 \u0111\u1ed3 kh\u00f3 \u0111\u1ecdc, th\u00ec s\u1ebd kh\u00f3 b\u1ea3o tr\u00ec. \u0110\u01a1n gi\u1ea3n h\u00f3a c\u00e1c k\u1ebft n\u1ed1i v\u00e0 nh\u00f3m theo logic.<\/li>\n
                          • L\u00ean k\u1ebf ho\u1ea1ch cho s\u1ef1 thay \u0111\u1ed5i:<\/strong> Thi\u1ebft k\u1ebf v\u1edbi t\u01b0\u01a1ng lai trong t\u00e2m tr\u00ed. S\u1eed d\u1ee5ng kh\u00f3a gi\u1ea3 v\u00e0 tr\u00e1nh c\u00e1c ph\u1ee5 thu\u1ed9c c\u1ee9ng khi c\u00f3 th\u1ec3.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

                            Thi\u1ebft k\u1ebf m\u1ed9t l\u01b0\u1ee3c \u0111\u1ed3 c\u01a1 s\u1edf d\u1eef li\u1ec7u m\u1ea1nh m\u1ebd l\u00e0 b\u01b0\u1edbc n\u1ec1n t\u1ea3ng trong k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m. B\u1ea3n v\u1ebd ph\u00e1c th\u1ea3o cho ki\u1ebfn tr\u00fac n\u00e0y l\u00e0 S\u01a1…<\/p>\n","protected":false},"author":1,"featured_media":1787,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t cho c\u00e1c s\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3 s\u1ea1ch, d\u1ec5 b\u1ea3o tr\u00ec","_yoast_wpseo_metadesc":"M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 vi\u1ec7c t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 ERD s\u1ea1ch, d\u1ec5 b\u1ea3o tr\u00ec. H\u1ecdc c\u00e1c quy t\u1eafc \u0111\u1eb7t t\u00ean, chu\u1ea9n h\u00f3a v\u00e0 c\u00e1c chi\u1ebfn l\u01b0\u1ee3c b\u1ed1 c\u1ee5c \u0111\u1ec3 thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u1eefng ch\u1eafc.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[86],"tags":[82,85],"class_list":["post-1786","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-erd","tag-academic","tag-erd"],"yoast_head":"\nC\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t cho c\u00e1c s\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3 s\u1ea1ch, d\u1ec5 b\u1ea3o tr\u00ec<\/title>\n<meta name=\"description\" content=\"M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 vi\u1ec7c t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 ERD s\u1ea1ch, d\u1ec5 b\u1ea3o tr\u00ec. H\u1ecdc c\u00e1c quy t\u1eafc \u0111\u1eb7t t\u00ean, chu\u1ea9n h\u00f3a v\u00e0 c\u00e1c chi\u1ebfn l\u01b0\u1ee3c b\u1ed1 c\u1ee5c \u0111\u1ec3 thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u1eefng ch\u1eafc.\" \/>\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.go-diagram.com\/vi\/best-practices-clean-maintainable-entity-relationship-diagrams\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t cho c\u00e1c s\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3 s\u1ea1ch, d\u1ec5 b\u1ea3o tr\u00ec\" \/>\n<meta property=\"og:description\" content=\"M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 vi\u1ec7c t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 ERD s\u1ea1ch, d\u1ec5 b\u1ea3o tr\u00ec. 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