{"id":1508,"date":"2026-04-12T12:35:23","date_gmt":"2026-04-12T04:35:23","guid":{"rendered":"https:\/\/mayaharper.showcasingme.net\/vn\/uml-object-diagrams-vs-class-diagrams-key-differences\/"},"modified":"2026-04-12T12:35:23","modified_gmt":"2026-04-12T04:35:23","slug":"uml-object-diagrams-vs-class-diagrams-key-differences","status":"publish","type":"post","link":"https:\/\/mayaharper.showcasingme.net\/vn\/uml-object-diagrams-vs-class-diagrams-key-differences\/","title":{"rendered":"S\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng UML so v\u1edbi S\u01a1 \u0111\u1ed3 L\u1edbp: Nh\u1eefng kh\u00e1c bi\u1ec7t ch\u00ednh"},"content":{"rendered":"

Hi\u1ec3u \u0111\u01b0\u1ee3c ki\u1ebfn tr\u00fac c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m \u0111\u00f2i h\u1ecfi t\u00e0i li\u1ec7u ch\u00ednh x\u00e1c. Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML) cung c\u1ea5p t\u1eeb v\u1ef1ng chu\u1ea9n cho m\u1ee5c \u0111\u00edch n\u00e0y. Trong khu\u00f4n kh\u1ed5 n\u00e0y, hai lo\u1ea1i s\u01a1 \u0111\u1ed3 c\u1ee5 th\u1ec3 th\u01b0\u1eddng g\u00e2y nh\u1ea7m l\u1eabn cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 ki\u1ebfn tr\u00fac s\u01b0: S\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng UML<\/strong> v\u00e0 S\u01a1 \u0111\u1ed3 L\u1edbp UML<\/strong>. M\u1eb7c d\u00f9 ch\u00fang c\u00f3 s\u1ef1 t\u01b0\u01a1ng \u0111\u1ed3ng v\u1ec1 m\u1eb7t h\u00ecnh \u1ea3nh, nh\u01b0ng m\u1ee5c \u0111\u00edch, m\u1ee9c \u0111\u1ed9 tr\u1eebu t\u01b0\u1ee3ng v\u00e0 t\u00ednh h\u1eefu d\u1ee5ng c\u1ee7a ch\u00fang trong v\u00f2ng \u0111\u1eddi ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m l\u1ea1i kh\u00e1c bi\u1ec7t r\u00f5 r\u1ec7t.<\/p>\n

H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 nh\u1eefng n\u00e9t tinh t\u1ebf v\u1ec1 c\u1ea5u tr\u00fac, \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n v\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t k\u1ef9 thu\u1eadt gi\u1eefa hai lo\u1ea1i t\u00e0i li\u1ec7u m\u00f4 h\u00ecnh h\u00f3a n\u00e0y. B\u1eb1ng c\u00e1ch n\u1eafm r\u00f5 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3 cho t\u1eebng lo\u1ea1i, c\u00e1c \u0111\u1ed9i nh\u00f3m c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00e0i li\u1ec7u thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng lu\u00f4n r\u00f5 r\u00e0ng, ch\u00ednh x\u00e1c v\u00e0 c\u00f3 gi\u00e1 tr\u1ecb trong su\u1ed1t v\u00f2ng \u0111\u1eddi d\u1ef1 \u00e1n.<\/p>\n

\"Educational<\/figure>\n

S\u01a1 \u0111\u1ed3 L\u1edbp UML l\u00e0 g\u00ec? \ud83d\udcca<\/h2>\n

S\u01a1 \u0111\u1ed3 L\u1edbp l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng. N\u00f3 m\u00f4 t\u1ea3 c\u1ea5u tr\u00fac t\u0129nh c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng b\u1eb1ng c\u00e1ch hi\u1ec3n th\u1ecb c\u00e1c l\u1edbp, thu\u1ed9c t\u00ednh, thao t\u00e1c v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng. N\u00f3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 b\u1ea3n v\u1ebd thi\u1ebft k\u1ebf, \u0111\u1ecbnh ngh\u0129a nh\u1eefng g\u00ec c\u00f3 th\u1ec3<\/em>t\u1ed3n t\u1ea1i trong h\u1ec7 th\u1ed1ng thay v\u00ec nh\u1eefng g\u00ec \u0111ang<\/em>hi\u1ec7n \u0111ang t\u1ed3n t\u1ea1i.<\/p>\n

C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh<\/h3>\n
    \n
  • L\u1edbp:<\/strong>\u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n d\u01b0\u1edbi d\u1ea1ng h\u00ecnh ch\u1eef nh\u1eadt chia th\u00e0nh ba \u00f4. Ph\u1ea7n tr\u00ean ch\u1ee9a t\u00ean l\u1edbp, ph\u1ea7n gi\u1eefa li\u1ec7t k\u00ea c\u00e1c thu\u1ed9c t\u00ednh, v\u00e0 ph\u1ea7n d\u01b0\u1edbi li\u1ec7t k\u00ea c\u00e1c thao t\u00e1c (ph\u01b0\u01a1ng th\u1ee9c).<\/li>\n
  • Thu\u1ed9c t\u00ednh:<\/strong>C\u00e1c thu\u1ed9c t\u00ednh \u0111\u1ecbnh ngh\u0129a tr\u1ea1ng th\u00e1i c\u1ee7a m\u1ed9t th\u1ec3 hi\u1ec7n. C\u00e1c b\u1ed9 ph\u1eadn hi\u1ec3n th\u1ecb (v\u00ed d\u1ee5 nh\u01b0 +<\/code> cho c\u00f4ng khai, -<\/code> cho ri\u00eang t\u01b0) \u0111i tr\u01b0\u1edbc t\u00ean thu\u1ed9c t\u00ednh.<\/li>\n
  • Thao t\u00e1c:<\/strong>C\u00e1c h\u00e0nh vi ho\u1eb7c ph\u01b0\u01a1ng th\u1ee9c c\u00f3 s\u1eb5n cho l\u1edbp. Ch\u00fang tu\u00e2n theo c\u00f9ng quy t\u1eafc hi\u1ec3n th\u1ecb nh\u01b0 thu\u1ed9c t\u00ednh.<\/li>\n
  • \u0110a d\u1ea1ng:<\/strong> X\u00e1c \u0111\u1ecbnh s\u1ed1 l\u01b0\u1ee3ng th\u1ec3 hi\u1ec7n c\u1ee7a m\u1ed9t l\u1edbp c\u00f3 th\u1ec3 li\u00ean k\u1ebft v\u1edbi m\u1ed9t l\u1edbp kh\u00e1c. C\u00e1c k\u00fd hi\u1ec7u ph\u1ed5 bi\u1ebfn bao g\u1ed3m 1<\/code>, 0..1<\/code>, 1..*<\/code>, v\u00e0 *<\/code>.<\/li>\n<\/ul>\n

    \u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh<\/h3>\n
      \n
    • B\u1ea3n ch\u1ea5t t\u0129nh:<\/strong>S\u01a1 \u0111\u1ed3 l\u1edbp bi\u1ec3u di\u1ec5n c\u1ea5u tr\u00fac t\u0129nh. Ch\u00fang kh\u00f4ng hi\u1ec3n th\u1ecb lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ed9ng ho\u1eb7c tr\u00ecnh t\u1ef1 c\u00e1c s\u1ef1 ki\u1ec7n.<\/li>\n
    • T\u1ed5ng qu\u00e1t h\u00f3a:<\/strong> Ch\u00fang t\u1eadp trung v\u00e0o \u0111\u1ecbnh ngh\u0129a chung c\u1ee7a c\u00e1c ki\u1ec3u, ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00e1c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3. M\u1ed9t Kh\u00e1ch h\u00e0ng<\/code> l\u1edbp x\u00e1c \u0111\u1ecbnh c\u00e1c quy t\u1eafc cho b\u1ea5t k\u1ef3 kh\u00e1ch h\u00e0ng n\u00e0o, ch\u1ee9 kh\u00f4ng ph\u1ea3i m\u1ed9t ng\u01b0\u1eddi c\u1ee5 th\u1ec3 t\u00ean l\u00e0 \u201cJohn\u201d.<\/li>\n
    • Giai \u0111o\u1ea1n thi\u1ebft k\u1ebf:<\/strong> Th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u1ea1o trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf \u0111\u1ec3 thi\u1ebft l\u1eadp l\u01b0\u1ee3c \u0111\u1ed3 v\u00e0 logic tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u l\u1eadp tr\u00ecnh.<\/li>\n<\/ul>\n

      Khi t\u1ea1o s\u01a1 \u0111\u1ed3 l\u1edbp, tr\u1ecdng t\u00e2m l\u00e0 kh\u1ea3 n\u0103ng t\u00e1i s\u1eed d\u1ee5ng v\u00e0 m\u1edf r\u1ed9ng. N\u00f3 x\u00e1c \u0111\u1ecbnh h\u1ee3p \u0111\u1ed3ng m\u00e0 m\u00e3 ngu\u1ed3n ph\u1ea3i tu\u00e2n theo. N\u1ebfu s\u01a1 \u0111\u1ed3 l\u1edbp thay \u0111\u1ed5i, c\u1ea5u tr\u00fac m\u00e3 ngu\u1ed3n n\u1ec1n t\u1ea3ng th\u01b0\u1eddng c\u1ea7n \u0111\u01b0\u1ee3c t\u00e1i c\u1ea5u tr\u00fac.<\/p>\n

      S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng UML l\u00e0 g\u00ec? \ud83d\uddbc\ufe0f<\/h2>\n

      S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng l\u00e0 m\u1ed9t b\u1ee9c \u1ea3nh ch\u1ee5p l\u1ea1i h\u1ec7 th\u1ed1ng t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3. N\u00f3 hi\u1ec3n th\u1ecb c\u00e1c th\u1ec3 hi\u1ec7n c\u1ee7a c\u00e1c l\u1edbp, c\u00e1c gi\u00e1 tr\u1ecb c\u1ee5 th\u1ec3 c\u1ee7a ch\u00fang v\u00e0 c\u00e1c li\u00ean k\u1ebft gi\u1eefa c\u00e1c th\u1ec3 hi\u1ec7n \u0111\u00f3. N\u1ebfu s\u01a1 \u0111\u1ed3 l\u1edbp l\u00e0 b\u1ea3n v\u1ebd thi\u1ebft k\u1ebf, th\u00ec s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng l\u00e0 m\u1ed9t b\u1ee9c \u1ea3nh ch\u1ee5p c\u00f4ng tr\u00ecnh \u0111ang \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng.<\/p>\n

      C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh<\/h3>\n
        \n
      • Th\u1ec3 hi\u1ec7n \u0111\u1ed1i t\u01b0\u1ee3ng:<\/strong> \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n t\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t l\u1edbp nh\u01b0ng c\u00f3 g\u1ea1ch ch\u00e2n d\u01b0\u1edbi t\u00ean. T\u00ean th\u01b0\u1eddng tu\u00e2n theo m\u1eabu t\u00ean\u0110\u1ed1iT\u01b0\u1ee3ng : T\u00eanL\u1edbp<\/code>.<\/li>\n
      • Gi\u00e1 tr\u1ecb thu\u1ed9c t\u00ednh:<\/strong> Kh\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp li\u1ec7t k\u00ea ki\u1ec3u thu\u1ed9c t\u00ednh ki\u1ec3u<\/em>, s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng li\u1ec7t k\u00ea c\u00e1c gi\u00e1 tr\u1ecb th\u1ef1c t\u1ebf gi\u00e1 tr\u1ecb<\/em> \u0111\u01b0\u1ee3c g\u00e1n cho c\u00e1c thu\u1ed9c t\u00ednh \u0111\u00f3 v\u00e0o th\u1eddi \u0111i\u1ec3m \u0111\u00f3.<\/li>\n
      • Li\u00ean k\u1ebft:<\/strong> Bi\u1ec3u di\u1ec5n c\u00e1c m\u1ed1i li\u00ean h\u1ec7 c\u1ee5 th\u1ec3 gi\u1eefa c\u00e1c th\u1ec3 hi\u1ec7n. M\u1ed9t li\u00ean k\u1ebft l\u00e0 m\u1ed9t th\u1ec3 hi\u1ec7n c\u1ee7a m\u1ed1i li\u00ean h\u1ec7 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong s\u01a1 \u0111\u1ed3 l\u1edbp.<\/li>\n<\/ul>\n

        \u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh<\/h3>\n
          \n
        • B\u1ea3n ch\u1ee5p \u0111\u1ed9ng:<\/strong> N\u00f3 ghi l\u1ea1i tr\u1ea1ng th\u00e1i th\u1eddi gian ch\u1ea1y. N\u00f3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi, \u201cD\u1eef li\u1ec7u hi\u1ec7n t\u1ea1i tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o?\u201d<\/li>\n
        • D\u1eef li\u1ec7u c\u1ee5 th\u1ec3:<\/strong> N\u00f3 x\u1eed l\u00fd c\u00e1c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3. N\u00f3 x\u00e1c minh xem c\u00e1c m\u1ed1i quan h\u1ec7 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong s\u01a1 \u0111\u1ed3 L\u1edbp c\u00f3 th\u1ef1c s\u1ef1 c\u00f3 th\u1ec3 ch\u1ee9a d\u1eef li\u1ec7u th\u1ebf gi\u1edbi th\u1ef1c hay kh\u00f4ng.<\/li>\n
        • G\u1ee1 l\u1ed7i v\u00e0 Ki\u1ec3m th\u1eed:<\/strong> Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c minh c\u00e1c m\u1ed1i quan h\u1ec7 ph\u1ee9c t\u1ea1p ho\u1eb7c g\u1ee1 l\u1ed7i tr\u1ea1ng th\u00e1i b\u1ed9 nh\u1edb trong giai \u0111o\u1ea1n ki\u1ec3m th\u1eed.<\/li>\n<\/ul>\n

          S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u00edt ph\u1ed5 bi\u1ebfn h\u01a1n s\u01a1 \u0111\u1ed3 l\u1edbp trong c\u00e1c th\u1ea3o lu\u1eadn ki\u1ebfn tr\u00fac c\u1ea5p cao. Ch\u00fang mang t\u00ednh chuy\u00ean bi\u1ec7t h\u01a1n, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi c\u1ea5u h\u00ecnh c\u1ee5 th\u1ec3 c\u1ee7a c\u00e1c th\u1ec3 hi\u1ec7n d\u1eef li\u1ec7u l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 hi\u1ec3u h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n

          Nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh ch\u1ec9 trong m\u1ed9t c\u00e1i nh\u00ecn \ud83e\uddd0<\/h2>\n

          \u0110\u1ec3 tr\u1ef1c quan h\u00f3a s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 c\u1ea5u tr\u00fac v\u00e0 ch\u1ee9c n\u0103ng, h\u00e3y xem b\u1ea3ng so s\u00e1nh d\u01b0\u1edbi \u0111\u00e2y. \u0110i\u1ec1u n\u00e0y l\u00e0m n\u1ed5i b\u1eadt s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 m\u1ee5c \u0111\u00edch, k\u00fd hi\u1ec7u v\u00e0 giai \u0111o\u1ea1n v\u00f2ng \u0111\u1eddi.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
          T\u00ednh n\u0103ng<\/th>\nS\u01a1 \u0111\u1ed3 L\u1edbp UML<\/th>\nS\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng UML<\/th>\n<\/tr>\n<\/thead>\n
          Tr\u1ecdng t\u00e2m<\/strong><\/td>\n\u0110\u1ecbnh ngh\u0129a v\u00e0 C\u1ea5u tr\u00fac<\/td>\nTh\u1ec3 hi\u1ec7n v\u00e0 Tr\u1ea1ng th\u00e1i<\/td>\n<\/tr>\n
          M\u1ee9c \u0111\u1ed9 tr\u1eeb t\u01b0\u1ee3ng<\/strong><\/td>\nCao (m\u1ee9c ki\u1ec3u)<\/td>\nTh\u1ea5p (m\u1ee9c th\u1ec3 hi\u1ec7n)<\/td>\n<\/tr>\n
          B\u1ed1i c\u1ea3nh th\u1eddi gian<\/strong><\/td>\nT\u0129nh (b\u1ea3n v\u1ebd s\u01a1 b\u1ed9)<\/td>\n\u0110\u1ed9ng (b\u1ea3n ch\u1ee5p)<\/td>\n<\/tr>\n
          Hi\u1ec3n th\u1ecb thu\u1ed9c t\u00ednh<\/strong><\/td>\nT\u00ean thu\u1ed9c t\u00ednh + Ki\u1ec3u<\/td>\nT\u00ean thu\u1ed9c t\u00ednh + Gi\u00e1 tr\u1ecb<\/td>\n<\/tr>\n
          M\u1ed1i quan h\u1ec7<\/strong><\/td>\nLi\u00ean k\u1ebft<\/td>\nLi\u00ean k\u1ebft<\/td>\n<\/tr>\n
          Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ch\u00ednh<\/strong><\/td>\nThi\u1ebft k\u1ebf v\u00e0 Ki\u1ebfn tr\u00fac<\/td>\nX\u00e1c minh v\u00e0 G\u1ee1 l\u1ed7i<\/td>\n<\/tr>\n
          T\u1ea7n su\u1ea5t c\u1eadp nh\u1eadt<\/strong><\/td>\nHi\u1ebfm khi (\u1ed4n \u0111\u1ecbnh)<\/td>\nTh\u01b0\u1eddng xuy\u00ean (Thay \u0111\u1ed5i nhanh)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Khi n\u00e0o n\u00ean d\u00f9ng lo\u1ea1i n\u00e0o? \ud83e\udd14<\/h2>\n

          Vi\u1ec7c ch\u1ecdn gi\u1eefa c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ee5c ti\u00eau c\u1ee7a t\u00e0i li\u1ec7u. S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 sai c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 nh\u1ea7m l\u1eabn ho\u1eb7c hi\u1ec3u kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 h\u1ec7 th\u1ed1ng.<\/p>\n

          S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u1ec3:<\/h3>\n
            \n
          • Ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng:<\/strong> Khi x\u00e1c \u0111\u1ecbnh c\u1ea5u tr\u00fac t\u1ed5ng th\u1ec3 c\u1ee7a ph\u1ea7n m\u1ec1m.<\/li>\n
          • Thi\u1ebft k\u1ebf l\u01b0\u1ee3c \u0111\u1ed3 c\u01a1 s\u1edf d\u1eef li\u1ec7u:<\/strong> \u00c1nh x\u1ea1 c\u00e1c l\u1edbp v\u00e0o b\u1ea3ng v\u00e0 x\u00e1c \u0111\u1ecbnh c\u00e1c r\u00e0ng bu\u1ed9c.<\/li>\n
          • \u0110\u1ecbnh ngh\u0129a giao di\u1ec7n:<\/strong> X\u00e1c \u0111\u1ecbnh c\u00e1ch c\u00e1c m\u00f4-\u0111un kh\u00e1c nhau s\u1ebd t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau.<\/li>\n
          • T\u1ea1o m\u00e3 ngu\u1ed3n:<\/strong> Nhi\u1ec1u c\u00f4ng c\u1ee5 c\u00f3 th\u1ec3 t\u1ea1o m\u00e3 khung tr\u1ef1c ti\u1ebfp t\u1eeb s\u01a1 \u0111\u1ed3 l\u1edbp.<\/li>\n
          • T\u00e0i li\u1ec7u d\u00e0i h\u1ea1n:<\/strong> V\u00ec c\u1ea5u tr\u00fac hi\u1ebfm khi thay \u0111\u1ed5i m\u1ea1nh nh\u01b0 d\u1eef li\u1ec7u, s\u01a1 \u0111\u1ed3 l\u1edbp duy tr\u00ec t\u00ednh h\u1ee3p l\u1ec7 l\u00e2u h\u01a1n.<\/li>\n<\/ul>\n

            S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1ec3:<\/h3>\n
              \n
            • C\u00e1c m\u1ed1i quan h\u1ec7 ph\u1ee9c t\u1ea1p:<\/strong> Khi m\u1ed1i quan h\u1ec7 nhi\u1ec1u-\u0111a c\u00f3 c\u00e1c r\u00e0ng bu\u1ed9c c\u1ee5 th\u1ec3 m\u00e0 kh\u00f3 di\u1ec5n \u0111\u1ea1t b\u1eb1ng v\u0103n b\u1ea3n.<\/li>\n
            • X\u00e1c minh d\u1eef li\u1ec7u:<\/strong> Ki\u1ec3m tra xem m\u1ed9t t\u1eadp d\u1eef li\u1ec7u c\u1ee5 th\u1ec3 c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i trong c\u1ea5u tr\u00fac \u0111\u00e3 \u0111\u1ecbnh ngh\u0129a hay kh\u00f4ng.<\/li>\n
            • C\u00e1c t\u00ecnh hu\u1ed1ng ki\u1ec3m th\u1eed:<\/strong> X\u00e1c \u0111\u1ecbnh tr\u1ea1ng th\u00e1i ch\u00ednh x\u00e1c c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ea7n thi\u1ebft \u0111\u1ec3 k\u00edch ho\u1ea1t m\u1ed9t tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed c\u1ee5 th\u1ec3.<\/li>\n
            • Ph\u00e2n t\u00edch th\u1eddi gian ch\u1ea1y:<\/strong> G\u1ee1 l\u1ed7i r\u00f2 r\u1ec9 b\u1ed9 nh\u1edb ho\u1eb7c hi\u1ec3u chu k\u1ef3 s\u1ed1ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng trong qu\u00e1 tr\u00ecnh th\u1ef1c thi.<\/li>\n
            • T\u00e0i li\u1ec7u cho c\u00e1c tr\u01b0\u1eddng h\u1ee3p c\u1ee5 th\u1ec3:<\/strong> Gi\u1ea3i th\u00edch m\u1ed9t b\u00e1o c\u00e1o l\u1ed7i li\u00ean quan \u0111\u1ebfn m\u1ed9t c\u1ea5u h\u00ecnh c\u1ee5 th\u1ec3 c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng.<\/li>\n<\/ul>\n

              \u0110i s\u00e2u: C\u1ea5u tr\u00fac v\u00e0 ng\u1eef ph\u00e1p \ud83d\udd27<\/h2>\n

              M\u1eb7c d\u00f9 c\u00e1c y\u1ebfu t\u1ed1 tr\u1ef1c quan tr\u00f4ng gi\u1ed1ng nhau, nh\u01b0ng c\u00e1c quy t\u1eafc ng\u1eef ph\u00e1p \u0111\u1ea3m b\u1ea3o s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u00fd ngh\u0129a. Tu\u00e2n th\u1ee7 c\u00e1c quy \u01b0\u1edbc n\u00e0y gi\u00fap tr\u00e1nh s\u1ef1 m\u01a1 h\u1ed3.<\/p>\n

              Quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean l\u1edbp<\/h3>\n
                \n
              • S\u01a1 \u0111\u1ed3 l\u1edbp:<\/strong>S\u1eed d\u1ee5ng ki\u1ec3u PascalCase (v\u00ed d\u1ee5, BankAccount<\/code>). \u0110i\u1ec1u n\u00e0y bi\u1ec3u th\u1ecb m\u1ed9t ki\u1ec3u d\u1eef li\u1ec7u.<\/li>\n
              • S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng:<\/strong>S\u1eed d\u1ee5ng ch\u1eef th\u01b0\u1eddng cho t\u00ean th\u1ec3 hi\u1ec7n, theo sau l\u00e0 d\u1ea5u hai ch\u1ea5m v\u00e0 t\u00ean l\u1edbp (v\u00ed d\u1ee5, acc1 : BankAccount<\/code>). \u0110i\u1ec1u n\u00e0y bi\u1ec3u th\u1ecb m\u1ed9t th\u1ec3 hi\u1ec7n.<\/li>\n<\/ul>\n

                Bi\u1ec3u di\u1ec5n thu\u1ed9c t\u00ednh<\/h3>\n
                  \n
                • S\u01a1 \u0111\u1ed3 l\u1edbp:<\/strong>Li\u1ec7t k\u00ea ki\u1ec3u d\u1eef li\u1ec7u. balance : Integer<\/code>.<\/li>\n
                • S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng:<\/strong>Li\u1ec7t k\u00ea gi\u00e1 tr\u1ecb th\u1ef1c t\u1ebf. balance : 1500<\/code>.<\/li>\n<\/ul>\n

                  S\u1ef1 ph\u00e2n bi\u1ec7t n\u00e0y r\u1ea5t quan tr\u1ecdng. Trong s\u01a1 \u0111\u1ed3 l\u1edbp, b\u1ea1n kh\u00f4ng th\u1ec3 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb c\u1ee7a m\u1ed9t thu\u1ed9c t\u00ednh v\u00ec l\u1edbp c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c kh\u1edfi t\u1ea1o v\u1edbi b\u1ea5t k\u1ef3 s\u1ed1 nguy\u00ean h\u1ee3p l\u1ec7 n\u00e0o. Trong s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng, gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh cho b\u1ea3n ch\u1ee5p c\u1ee5 th\u1ec3 \u0111\u00f3.<\/p>\n

                  \u0110a d\u1ea1ng v\u00e0 c\u1ea5p \u0111\u1ed9<\/h3>\n

                  C\u1ea3 hai s\u01a1 \u0111\u1ed3 \u0111\u1ec1u s\u1eed d\u1ee5ng \u0111a d\u1ea1ng, nh\u01b0ng c\u00e1ch hi\u1ec3u thay \u0111\u1ed5i.<\/p>\n

                    \n
                  • S\u01a1 \u0111\u1ed3 l\u1edbp:<\/strong>\u0110\u1ecbnh ngh\u0129a quy t\u1eafc. \u201cM\u1ed9t Kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 c\u00f3 kh\u00f4ng c\u00f3 ho\u1eb7c nhi\u1ec1u h\u01a1n m\u1ed9t \u0110\u01a1n h\u00e0ng\u201d (0..*<\/code>).<\/li>\n
                  • S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng:<\/strong>Hi\u1ec3n th\u1ecb th\u1ef1c t\u1ebf. Trong b\u1ea3n ch\u1ee5p c\u1ee5 th\u1ec3 n\u00e0y, Kh\u00e1ch h\u00e0ng A c\u00f3 \u0111\u00fang ba \u0111\u1ed1i t\u01b0\u1ee3ng \u0110\u01a1n h\u00e0ng \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi n\u00f3.<\/li>\n<\/ul>\n

                    B\u1ea3n \u0111\u1ed3 m\u1ed1i quan h\u1ec7 \ud83d\udd78\ufe0f<\/h2>\n

                    C\u00e1c m\u1ed1i quan h\u1ec7 l\u00e0 ch\u1ea5t k\u1ebft d\u00ednh gi\u1eef cho h\u1ec7 th\u1ed1ng v\u1eadn h\u00e0nh. Hi\u1ec3u c\u00e1ch ch\u00fang \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i gi\u1eefa s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a ch\u00ednh x\u00e1c.<\/p>\n

                    Li\u00ean k\u1ebft so v\u1edbi Li\u00ean k\u1ebft<\/h3>\n
                      \n
                    • Li\u00ean k\u1ebft:<\/strong> M\u1ed9t m\u1ed1i quan h\u1ec7 c\u1ea5u tr\u00fac gi\u1eefa c\u00e1c l\u1edbp. N\u00f3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong s\u01a1 \u0111\u1ed3 L\u1edbp. N\u00f3 bi\u1ec3u di\u1ec5n kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i.<\/li>\n
                    • Li\u00ean k\u1ebft:<\/strong> M\u1ed9t k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c th\u1ec3 hi\u1ec7n. N\u00f3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong s\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng. N\u00f3 bi\u1ec3u di\u1ec5n m\u1ed9t k\u1ebft n\u1ed1i th\u1ef1c t\u1ebf.<\/li>\n<\/ul>\n

                      H\u00e3y h\u00ecnh dung m\u1ed9t Li\u00ean k\u1ebft nh\u01b0 m\u1ed9t con \u0111\u01b0\u1eddng tr\u00ean b\u1ea3n \u0111\u1ed3 v\u00e0 m\u1ed9t Li\u00ean k\u1ebft nh\u01b0 m\u1ed9t chi\u1ebfc xe \u0111ang ch\u1ea1y tr\u00ean con \u0111\u01b0\u1eddng \u0111\u00f3. Con \u0111\u01b0\u1eddng t\u1ed3n t\u1ea1i d\u00f9 kh\u00f4ng c\u00f3 giao th\u00f4ng; chi\u1ebfc xe ch\u1ec9 t\u1ed3n t\u1ea1i khi n\u00f3 \u1edf \u0111\u00f3.<\/p>\n

                      S\u1ef1 t\u00edch h\u1ee3p v\u00e0 S\u1ef1 k\u1ebft h\u1ee3p<\/h3>\n

                      Nh\u1eefng m\u1ed1i quan h\u1ec7 n\u00e0y bi\u1ec3u th\u1ecb quy\u1ec1n s\u1edf h\u1eefu v\u00e0 c\u00e1c ph\u1ee5 thu\u1ed9c v\u1ec1 v\u00f2ng \u0111\u1eddi.<\/p>\n

                        \n
                      • S\u1ef1 t\u00edch h\u1ee3p:<\/strong>M\u1ed9t m\u1ed1i quan h\u1ec7 \u201cc\u00f3-m\u1ed9t\u201d trong \u0111\u00f3 c\u00e1c b\u1ed9 ph\u1eadn c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i \u0111\u1ed9c l\u1eadp. Trong s\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng, \u0111i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n nh\u01b0 m\u1ed9t li\u00ean k\u1ebft m\u00e0 th\u1ec3 hi\u1ec7n \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia s\u1ebb.<\/li>\n
                      • S\u1ef1 k\u1ebft h\u1ee3p:<\/strong>M\u1ed9t m\u1ed1i quan h\u1ec7 \u201cthu\u1ed9c-ph\u1ea7n\u201d m\u1ea1nh m\u1ebd. N\u1ebfu to\u00e0n th\u1ec3 ch\u1ebft, c\u00e1c b\u1ed9 ph\u1eadn c\u0169ng ch\u1ebft. Trong s\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng, \u0111i\u1ec1u n\u00e0y ng\u1ee5 \u00fd s\u1ef1 g\u1eafn k\u1ebft ch\u1eb7t ch\u1ebd h\u01a1n gi\u1eefa c\u00e1c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3.<\/li>\n<\/ul>\n

                        Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u26a0\ufe0f<\/h2>\n

                        Nh\u1eefng sai l\u1ea7m trong m\u00f4 h\u00ecnh h\u00f3a c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn l\u1ed7i tri\u1ec3n khai. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh.<\/p>\n

                        Sai l\u1ea7m: Qu\u00e1 t\u1ea3i s\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng<\/h3>\n

                        Kh\u00f4ng t\u1ea1o s\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng cho m\u1ecdi tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 x\u1ea3y ra. Ch\u00fang s\u1ebd tr\u1edf n\u00ean kh\u00f3 \u0111\u1ecdc nhanh ch\u00f3ng n\u1ebfu hi\u1ec3n th\u1ecb qu\u00e1 nhi\u1ec1u th\u1ec3 hi\u1ec7n. Ch\u1ec9 s\u1eed d\u1ee5ng ch\u00fang \u0111\u1ec3 minh h\u1ecda c\u00e1c t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3, ph\u1ee9c t\u1ea1p.<\/p>\n

                        Sai l\u1ea7m: Nh\u1ea7m l\u1eabn gi\u1eefa Ki\u1ec3u v\u00e0 Th\u1ec3 hi\u1ec7n<\/h3>\n

                        Kh\u00f4ng bao gi\u1edd tr\u1ed9n l\u1eabn k\u00fd hi\u1ec7u L\u1edbp v\u00e0 K\u00fd hi\u1ec7u \u0110\u1ed1i t\u01b0\u1ee3ng trong c\u00f9ng m\u1ed9t s\u01a1 \u0111\u1ed3, tr\u1eeb khi ghi r\u00f5 nh\u00e3n l\u00e0 nh\u01b0 v\u1eady. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra s\u1ef1 m\u01a1 h\u1ed3 cho ng\u01b0\u1eddi \u0111\u1ecdc. N\u1ebfu b\u1ea1n th\u1ea5y t\u00ean th\u1ec3 hi\u1ec7n, th\u00ec \u0111\u00f3 ph\u1ea3i l\u00e0 s\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng.<\/p>\n

                        Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t: T\u00ednh nh\u1ea5t qu\u00e1n<\/h3>\n
                          \n
                        • \u0110\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng kh\u1edbp ho\u00e0n h\u1ea3o v\u1edbi s\u01a1 \u0111\u1ed3 L\u1edbp. N\u1ebfu s\u01a1 \u0111\u1ed3 L\u1edbp n\u00f3i m\u1ed1i quan h\u1ec7 l\u00e0 t\u00f9y ch\u1ecdn, s\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng kh\u00f4ng \u0111\u01b0\u1ee3c \u00e9p bu\u1ed9c n\u00f3.<\/li>\n
                        • S\u1eed d\u1ee5ng quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean nh\u1ea5t qu\u00e1n tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c s\u01a1 \u0111\u1ed3 trong d\u1ef1 \u00e1n.<\/li>\n<\/ul>\n

                          Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t: T\u00ednh r\u00f5 r\u00e0ng<\/h3>\n
                            \n
                          • Ch\u1ec9 s\u1eed d\u1ee5ng s\u1ef1 thay \u0111\u1ed5i m\u00e0u s\u1eafc ho\u1eb7c h\u00ecnh d\u1ea1ng n\u1ebfu ch\u00fang truy\u1ec1n t\u1ea3i \u00fd ngh\u0129a ng\u1eef ngh\u0129a, ch\u1ee9 kh\u00f4ng ch\u1ec9 v\u00ec m\u1ee5c \u0111\u00edch th\u1ea9m m\u1ef9.<\/li>\n
                          • Gi\u1eef ph\u1ea1m vi c\u1ee7a s\u01a1 \u0111\u1ed3 \u0110\u1ed1i t\u01b0\u1ee3ng \u1edf m\u1ee9c h\u1eb9p. T\u1eadp trung v\u00e0o c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ee5 th\u1ec3 tham gia v\u00e0o t\u00ecnh hu\u1ed1ng \u0111ang \u0111\u01b0\u1ee3c th\u1ea3o lu\u1eadn.<\/li>\n<\/ul>\n

                            C\u00e1c t\u00ecnh hu\u1ed1ng \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf \ud83c\udfd7\ufe0f<\/h2>\n

                            Nh\u1eefng s\u01a1 \u0111\u1ed3 n\u00e0y ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o trong quy tr\u00ecnh ph\u00e1t tri\u1ec3n th\u1ef1c t\u1ebf?<\/p>\n

                            T\u00ecnh hu\u1ed1ng 1: Thi\u1ebft k\u1ebf n\u1ec1n t\u1ea3ng Th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed<\/h3>\n

                            Trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf, nh\u00f3m t\u1ea1o ra m\u1ed9t S\u01a1 \u0111\u1ed3 L\u1edbp<\/strong> \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh S\u1ea3n ph\u1ea9m<\/code>, Gi\u1ecf h\u00e0ng<\/code>, v\u00e0 \u0110\u01a1n h\u00e0ng<\/code>. Ch\u00fang \u0111\u1ecbnh ngh\u0129a r\u1eb1ng m\u1ed9t Gi\u1ecf h\u00e0ng ch\u1ee9a nhi\u1ec1u S\u1ea3n ph\u1ea9m. \u0110i\u1ec1u n\u00e0y thi\u1ebft l\u1eadp c\u00e1c quy t\u1eafc.<\/p>\n

                            Sau n\u00e0y, trong qu\u00e1 tr\u00ecnh xem x\u00e9t m\u00e3 ngu\u1ed3n, m\u1ed9t nh\u00e0 ph\u00e1t tri\u1ec3n nh\u1eadn th\u1ea5y nguy c\u01a1 r\u00f2 r\u1ec9 b\u1ed9 nh\u1edb khi m\u1ed9t Gi\u1ecf h\u00e0ng b\u1ecb \u0111\u00f3ng. H\u1ecd t\u1ea1o ra m\u1ed9t S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng<\/strong> \u0111\u1ec3 theo d\u00f5i c\u00e1c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3 c\u1ee7a Gi\u1ecf h\u00e0ng<\/code> v\u00e0 S\u1ea3n ph\u1ea9m<\/code> c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong b\u1ed9 nh\u1edb. \u0110i\u1ec1u n\u00e0y gi\u00fap h\u00ecnh dung r\u00f5 v\u1ea5n \u0111\u1ec1 v\u1ec1 v\u00f2ng \u0111\u1eddi.<\/p>\n

                            T\u00ecnh hu\u1ed1ng 2: Di chuy\u1ec3n c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/h3>\n

                            Khi di chuy\u1ec3n d\u1eef li\u1ec7u sang c\u1ea5u tr\u00fac m\u1edbi, s\u01a1 \u0111\u1ed3 S\u01a1 \u0111\u1ed3 l\u1edbp<\/strong> \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt \u0111\u1ec3 ph\u1ea3n \u00e1nh c\u1ea5u tr\u00fac b\u1ea3ng m\u1edbi. S\u01a1 \u0111\u1ed3 S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng<\/strong> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o c\u00e1c b\u1ed9 d\u1eef li\u1ec7u ki\u1ec3m th\u1eed. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u ki\u1ec3m th\u1eed tu\u00e2n th\u1ee7 c\u00e1c r\u00e0ng bu\u1ed9c c\u1ee7a c\u1ea5u tr\u00fac m\u1edbi.<\/p>\n

                            T\u00ecnh hu\u1ed1ng 3: T\u00e0i li\u1ec7u API<\/h3>\n

                            T\u00e0i li\u1ec7u API th\u01b0\u1eddng d\u1ef1a v\u00e0o S\u01a1 \u0111\u1ed3 l\u1edbp \u0111\u1ec3 hi\u1ec3n th\u1ecb c\u1ea5u tr\u00fac y\u00eau c\u1ea7u\/ph\u1ea3n h\u1ed3i. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi c\u00e1c ph\u1ea3n h\u1ed3i l\u1ed3ng gh\u00e9p ph\u1ee9c t\u1ea1p, m\u1ed9t S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb m\u1ed9t v\u00ed d\u1ee5 c\u1ee5 th\u1ec3 v\u1ec1 d\u1eef li\u1ec7u \u0111\u1ea7u ra, gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n frontend d\u1ec5 hi\u1ec3u h\u01a1n c\u1ea5u tr\u00fac d\u1eef li\u1ec7u.<\/p>\n

                            B\u1ea3o tr\u00ec v\u00e0 ph\u00e1t tri\u1ec3n \ud83d\udd04<\/h2>\n

                            C\u00e1c m\u00f4 h\u00ecnh kh\u00f4ng ph\u1ea3i l\u00e0 t\u00e0i li\u1ec7u t\u0129nh; ch\u00fang ph\u00e1t tri\u1ec3n c\u00f9ng v\u1edbi ph\u1ea7n m\u1ec1m.<\/p>\n

                            B\u1ea3o tr\u00ec S\u01a1 \u0111\u1ed3 l\u1edbp<\/h3>\n
                              \n
                            • \u0110\u01b0\u1ee3c c\u1eadp nh\u1eadt khi ki\u1ebfn tr\u00fac thay \u0111\u1ed5i.<\/li>\n
                            • \u0110\u01b0\u1ee3c c\u1eadp nh\u1eadt khi c\u00e1c t\u00ednh n\u0103ng m\u1edbi y\u00eau c\u1ea7u c\u00e1c l\u1edbp m\u1edbi.<\/li>\n
                            • \u0110\u01b0\u1ee3c coi l\u00e0 ngu\u1ed3n th\u00f4ng tin ch\u00ednh x\u00e1c cho c\u1ea5u tr\u00fac h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n

                              B\u1ea3o tr\u00ec S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng<\/h3>\n
                                \n
                              • Ch\u1ec9 \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt khi c\u00e1c t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3.<\/li>\n
                              • Th\u01b0\u1eddng b\u1ecb lo\u1ea1i b\u1ecf sau khi c\u00f4ng vi\u1ec7c g\u1ee1 l\u1ed7i ho\u1eb7c t\u00e0i li\u1ec7u c\u1ee5 th\u1ec3 ho\u00e0n t\u1ea5t.<\/li>\n
                              • \u00cdt c\u00f3 kh\u1ea3 n\u0103ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n tr\u1eeb khi n\u00f3 ph\u1ee5c v\u1ee5 nh\u01b0 m\u1ed9t \u0111\u1ecbnh ngh\u0129a tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed quan tr\u1ecdng.<\/li>\n<\/ul>\n

                                T\u00edch h\u1ee3p v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 UML kh\u00e1c \ud83d\udd17<\/h2>\n

                                UML l\u00e0 m\u1ed9t b\u1ed9 c\u00f4ng c\u1ee5. C\u00e1c s\u01a1 \u0111\u1ed3 l\u1edbp v\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00f4ng t\u1ed3n t\u1ea1i \u0111\u1ed9c l\u1eadp.<\/p>\n

                                S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1<\/h3>\n

                                S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 th\u1ec3 hi\u1ec7n lu\u1ed3ng tin nh\u1eafn. Ch\u00fang tham chi\u1ebfu \u0111\u1ebfn c\u00e1c l\u1edbp \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong s\u01a1 \u0111\u1ed3 l\u1edbp. \u0110\u00f4i khi, ch\u00fang ng\u1ea7m tham chi\u1ebfu \u0111\u1ebfn s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng khi hi\u1ec3n th\u1ecb c\u00e1c t\u01b0\u01a1ng t\u00e1c c\u1ee5 th\u1ec3 gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng.<\/p>\n

                                S\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i<\/h3>\n

                                M\u00e1y tr\u1ea1ng th\u00e1i m\u00f4 t\u1ea3 v\u00f2ng \u0111\u1eddi c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng. Ch\u00fang ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o \u0111\u1ecbnh ngh\u0129a trong s\u01a1 \u0111\u1ed3 l\u1edbp. C\u00e1c tr\u1ea1ng th\u00e1i v\u00e0 chuy\u1ec3n ti\u1ebfp \u0111\u01b0\u1ee3c g\u1eafn v\u1edbi c\u00e1c l\u1edbp c\u1ee5 th\u1ec3.<\/p>\n

                                S\u01a1 \u0111\u1ed3 th\u00e0nh ph\u1ea7n<\/h3>\n

                                S\u01a1 \u0111\u1ed3 th\u00e0nh ph\u1ea7n nh\u00f3m c\u00e1c l\u1edbp th\u00e0nh c\u00e1c module. S\u01a1 \u0111\u1ed3 l\u1edbp cung c\u1ea5p c\u1ea5u tr\u00fac chi ti\u1ebft b\u00ean trong c\u00e1c th\u00e0nh ph\u1ea7n. S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb vi\u1ec7c kh\u1edfi t\u1ea1o c\u00e1c th\u00e0nh ph\u1ea7n trong m\u00f4i tr\u01b0\u1eddng ch\u1ea1y ch\u01b0\u01a1ng tr\u00ecnh.<\/p>\n

                                T\u00f3m t\u1eaft c\u00e1c ph\u00e1t hi\u1ec7n \ud83d\udcdd<\/h2>\n

                                Vi\u1ec7c ch\u1ecdn lo\u1ea1i s\u01a1 \u0111\u1ed3 ph\u00f9 h\u1ee3p l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n v\u00e0 th\u00f4ng tin c\u1ea7n thi\u1ebft.<\/p>\n

                                  \n
                                • S\u01a1 \u0111\u1ed3 l\u1edbp<\/strong> l\u00e0 n\u1ec1n t\u1ea3ng c\u1ea5u tr\u00fac. Ch\u00fang \u0111\u1ecbnh ngh\u0129a c\u00e1c quy t\u1eafc, ki\u1ec3u d\u1eef li\u1ec7u v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 t\u0129nh. Ch\u00fang r\u1ea5t c\u1ea7n thi\u1ebft cho thi\u1ebft k\u1ebf, l\u1eadp tr\u00ecnh v\u00e0 t\u00e0i li\u1ec7u h\u00f3a d\u00e0i h\u1ea1n.<\/li>\n
                                • S\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng<\/strong> l\u00e0 x\u00e1c minh t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y. Ch\u00fang hi\u1ec3n th\u1ecb c\u00e1c th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3 v\u00e0 tr\u1ea1ng th\u00e1i d\u1eef li\u1ec7u. Ch\u00fang r\u1ea5t c\u1ea7n thi\u1ebft cho g\u1ee1 l\u1ed7i, ki\u1ec3m th\u1eed v\u00e0 gi\u1ea3i th\u00edch c\u00e1c c\u1ea5u h\u00ecnh ph\u1ee9c t\u1ea1p.<\/li>\n<\/ul>\n

                                  B\u1eb1ng c\u00e1ch ph\u00e2n bi\u1ec7t gi\u1eefa b\u1ea3n v\u1ebd thi\u1ebft k\u1ebf (l\u1edbp) v\u00e0 b\u1ee9c \u1ea3nh ch\u1ee5p (\u0111\u1ed1i t\u01b0\u1ee3ng), c\u00e1c \u0111\u1ed9i c\u00f3 th\u1ec3 duy tr\u00ec s\u1ef1 ph\u00e2n t\u00e1ch r\u00f5 r\u00e0ng gi\u1eefa \u00fd \u0111\u1ecbnh thi\u1ebft k\u1ebf v\u00e0 th\u1ef1c t\u1ebf t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y. S\u1ef1 r\u00f5 r\u00e0ng n\u00e0y gi\u1ea3m thi\u1ec3u l\u1ed7i, c\u1ea3i thi\u1ec7n giao ti\u1ebfp v\u00e0 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng lu\u00f4n v\u1eefng ch\u1eafc trong su\u1ed1t v\u00f2ng \u0111\u1eddi c\u1ee7a n\u00f3.<\/p>\n

                                  Vi\u1ec7c \u00e1p d\u1ee5ng c\u00e1c th\u1ef1c h\u00e0nh n\u00e0y d\u1eabn \u0111\u1ebfn thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng t\u1ed1t h\u01a1n v\u00e0 c\u00e1c c\u01a1 s\u1edf m\u00e3 ngu\u1ed3n d\u1ec5 b\u1ea3o tr\u00ec h\u01a1n. T\u1eadp trung v\u00e0o c\u1ea5u tr\u00fac t\u0129nh v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp, v\u00e0 s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng khi tr\u1ea1ng th\u00e1i c\u1ee5 th\u1ec3 c\u1ee7a d\u1eef li\u1ec7u l\u00e0 quan tr\u1ecdng.<\/p>\n","protected":false},"excerpt":{"rendered":"

                                  Hi\u1ec3u \u0111\u01b0\u1ee3c ki\u1ebfn tr\u00fac c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m \u0111\u00f2i h\u1ecfi t\u00e0i li\u1ec7u ch\u00ednh x\u00e1c. Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t (UML) cung c\u1ea5p t\u1eeb v\u1ef1ng chu\u1ea9n cho m\u1ee5c \u0111\u00edch n\u00e0y. Trong khu\u00f4n kh\u1ed5 n\u00e0y, hai lo\u1ea1i s\u01a1 \u0111\u1ed3 c\u1ee5 th\u1ec3 th\u01b0\u1eddng g\u00e2y nh\u1ea7m l\u1eabn cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 ki\u1ebfn tr\u00fac […]<\/p>\n","protected":false},"author":1,"featured_media":1509,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[13],"tags":[44,45],"class_list":["post-1508","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unified-modeling-language","tag-academic","tag-object-diagram"],"yoast_head":"\nS\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng UML so v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp: Nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch<\/title>\n<meta name=\"description\" content=\"Hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa s\u01a1 \u0111\u1ed3 \u0111\u1ed1i t\u01b0\u1ee3ng UML v\u00e0 s\u01a1 \u0111\u1ed3 l\u1edbp. 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