{"id":1180,"date":"2026-04-06T14:25:14","date_gmt":"2026-04-06T06:25:14","guid":{"rendered":"https:\/\/flavorfiesta.foodiesconnect.net\/vn\/when-to-use-composite-structure-diagram\/"},"modified":"2026-04-06T14:25:14","modified_gmt":"2026-04-06T06:25:14","slug":"when-to-use-composite-structure-diagram","status":"publish","type":"post","link":"https:\/\/flavorfiesta.foodiesconnect.net\/vn\/when-to-use-composite-structure-diagram\/","title":{"rendered":"Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac t\u1ed5ng h\u1ee3p: H\u01b0\u1edbng d\u1eabn ra quy\u1ebft \u0111\u1ecbnh cho c\u00e1c tr\u01b0\u1edfng nh\u00f3m k\u1ef9 thu\u1eadt"},"content":{"rendered":"

Ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng \u0111\u00f2i h\u1ecfi s\u1ef1 ch\u00ednh x\u00e1c. L\u00e0 c\u00e1c tr\u01b0\u1edfng nh\u00f3m k\u1ef9 thu\u1eadt, b\u1ea1n th\u01b0\u1eddng ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi th\u00e1ch th\u1ee9c truy\u1ec1n \u0111\u1ea1t c\u00e1ch c\u00e1c c\u1ea5u tr\u00fac n\u1ed9i b\u1ed9 ph\u1ee9c t\u1ea1p ho\u1ea1t \u0111\u1ed9ng trong m\u1ed9t h\u1ec7 sinh th\u00e1i l\u1edbn h\u01a1n. Trong khi s\u01a1 \u0111\u1ed3 l\u1edbp th\u1ec3 hi\u1ec7n c\u00e1c m\u1ed1i quan h\u1ec7 v\u00e0 s\u01a1 \u0111\u1ed3 th\u00e0nh ph\u1ea7n th\u1ec3 hi\u1ec7n c\u00e1c kh\u1ed1i c\u1ea5p cao, th\u00ec l\u1ea1i c\u00f3 nhu c\u1ea7u c\u1ee5 th\u1ec3 v\u1ec1 kh\u1ea3 n\u0103ng quan s\u00e1t s\u1ef1 h\u1ee3p t\u00e1c n\u1ed9i b\u1ed9 c\u1ee7a m\u1ed9t b\u1ed9 ph\u00e2n lo\u1ea1i. \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fac m\u00e0S\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac t\u1ed5ng h\u1ee3p<\/strong>tr\u1edf n\u00ean thi\u1ebft y\u1ebfu. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u00e1c t\u00ecnh hu\u1ed1ng c\u1ee5 th\u1ec3, c\u00e1c y\u00eau c\u1ea7u c\u1ea5u tr\u00fac v\u00e0 c\u00e1c ti\u00eau ch\u00ed ra quy\u1ebft \u0111\u1ecbnh x\u00e1c \u0111\u1ecbnh khi n\u00e0o t\u00e0i li\u1ec7u UML n\u00e0y l\u00e0 c\u1ea7n thi\u1ebft, v\u00e0 khi n\u00e0o l\u1ea1i t\u1ea1o ra s\u1ef1 ph\u1ee9c t\u1ea1p kh\u00f4ng c\u1ea7n thi\u1ebft.<\/p>\n

Hi\u1ec3u r\u00f5 c\u1ea5u tr\u00fac n\u1ed9i b\u1ed9 gi\u00fap c\u00e1c \u0111\u1ed9i nh\u00f3m x\u00e1c minh c\u00e1c h\u1ee3p \u0111\u1ed3ng giao di\u1ec7n, ki\u1ec3m tra c\u1ea5u h\u00ecnh c\u1ed5ng v\u00e0 \u0111\u1ea3m b\u1ea3o c\u00e1c k\u1ebft n\u1ed1i \u1ee7y quy\u1ec1n ph\u00f9 h\u1ee3p v\u1edbi lu\u1ed3ng d\u1eef li\u1ec7u d\u1ef1 ki\u1ebfn. Tuy nhi\u00ean, c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 gi\u1ea3i ph\u00e1p ph\u1ed5 qu\u00e1t. Ch\u00fang ph\u1ee5c v\u1ee5 m\u1ed9t m\u1ee5c \u0111\u00edch c\u1ee5 th\u1ec3: ti\u1ebft l\u1ed9 c\u1ea5u t\u1ea1o b\u00ean trong c\u1ee7a m\u1ed9t l\u1edbp ho\u1eb7c th\u00e0nh ph\u1ea7n ph\u1ee9c t\u1ea1p. T\u00e0i li\u1ec7u n\u00e0y cung c\u1ea5p \u0111\u1ed9 s\u00e2u k\u1ef9 thu\u1eadt c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u01b0a ra c\u00e1c quy\u1ebft \u0111\u1ecbnh c\u00f3 c\u0103n c\u1ee9 v\u1ec1 vi\u1ec7c \u00e1p d\u1ee5ng ch\u00fang.<\/p>\n

\"Cute<\/figure>\n
\"Cute<\/figure>\n

\ud83e\udde9 Hi\u1ec3u r\u00f5 c\u1ea5u t\u1ea1o c\u1ee7a s\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac t\u1ed5ng h\u1ee3p<\/h2>\n

S\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac t\u1ed5ng h\u1ee3p tr\u1ef1c quan h\u00f3a c\u1ea5u tr\u00fac n\u1ed9i b\u1ed9 c\u1ee7a m\u1ed9t b\u1ed9 ph\u00e2n lo\u1ea1i. N\u00f3 chia nh\u1ecf m\u1ed9t l\u1edbp ho\u1eb7c th\u00e0nh ph\u1ea7n th\u00e0nh c\u00e1c ph\u1ea7n c\u1ea5u th\u00e0nh. C\u00e1c ph\u1ea7n n\u00e0y t\u01b0\u01a1ng t\u00e1c th\u00f4ng qua c\u00e1c giao di\u1ec7n, \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 c\u1ed5ng. S\u01a1 \u0111\u1ed3 t\u1eadp trung v\u00e0o d\u00e2y n\u1ed1i n\u1ed9i b\u1ed9 thay v\u00ec h\u00e0nh vi b\u00ean ngo\u00e0i.<\/p>\n

\ud83d\udd39 C\u00e1c y\u1ebfu t\u1ed1 c\u1ea5u tr\u00fac ch\u00ednh<\/h3>\n
    \n
  • B\u1ed9 ph\u00e2n lo\u1ea1i t\u1ed5ng h\u1ee3p:<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c h\u1ed9p ch\u1ee9a. Ch\u00fang \u0111\u1ea1i di\u1ec7n cho l\u1edbp ho\u1eb7c th\u00e0nh ph\u1ea7n \u0111ang \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch. Ch\u00fang l\u01b0u tr\u1eef c\u1ea5u tr\u00fac n\u1ed9i b\u1ed9.<\/li>\n
  • C\u00e1c ph\u1ea7n:<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c th\u1ec3 hi\u1ec7n n\u1ed9i b\u1ed9. M\u1ed9t ph\u1ea7n l\u00e0 vai tr\u00f2 c\u1ee5 th\u1ec3 do m\u1ed9t b\u1ed9 ph\u00e2n lo\u1ea1i \u0111\u1ea3m nh\u1eadn b\u00ean trong c\u1ea5u tr\u00fac t\u1ed5ng h\u1ee3p. N\u00f3 c\u00f3 ki\u1ec3u \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh.<\/li>\n
  • C\u1ed5ng:<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c \u0111i\u1ec3m t\u01b0\u01a1ng t\u00e1c. C\u1ed5ng x\u00e1c \u0111\u1ecbnh n\u01a1i m\u1ed9t ph\u1ea7n k\u1ebft n\u1ed1i v\u1edbi th\u1ebf gi\u1edbi b\u00ean ngo\u00e0i ho\u1eb7c v\u1edbi c\u00e1c ph\u1ea7n n\u1ed9i b\u1ed9 kh\u00e1c. Ch\u00fang \u0111\u1ea3m b\u1ea3o c\u00e1c h\u1ee3p \u0111\u1ed3ng giao di\u1ec7n.<\/li>\n
  • K\u1ebft n\u1ed1i:<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c ph\u1ea7n v\u00e0 c\u1ed5ng. Ch\u00fang \u0111\u1ea1i di\u1ec7n cho lu\u1ed3ng d\u1eef li\u1ec7u ho\u1eb7c \u0111i\u1ec1u khi\u1ec3n gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n n\u1ed9i b\u1ed9.<\/li>\n
  • Ph\u00e2n b\u1ed5 n\u1ed9i b\u1ed9:<\/strong> Ch\u00fang cho th\u1ea5y c\u00e1ch t\u00e0i nguy\u00ean ho\u1eb7c \u0111i\u1ec1u khi\u1ec3n \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 qua c\u1ea5u tr\u00fac.<\/li>\n
  • C\u00e1c k\u1ebft n\u1ed1i \u1ee7y quy\u1ec1n:<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c k\u1ebft n\u1ed1i t\u1eeb c\u1ed5ng b\u00ean ngo\u00e0i \u0111\u1ebfn c\u1ed5ng b\u00ean trong. Ch\u00fang cho ph\u00e9p c\u1ea5u tr\u00fac t\u1ed5ng h\u1ee3p ti\u1ebft l\u1ed9 ch\u1ee9c n\u0103ng c\u1ee7a m\u1ed9t ph\u1ea7n n\u1ed9i b\u1ed9 m\u00e0 kh\u00f4ng ti\u1ebft l\u1ed9 \u0111\u1ed9 ph\u1ee9c t\u1ea1p n\u1ed9i b\u1ed9.<\/li>\n<\/ul>\n

    Vi\u1ec7c tr\u1ef1c quan h\u00f3a c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y gi\u00fap x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m ngh\u1ebdn ti\u1ec1m t\u00e0ng. V\u00ed d\u1ee5, n\u1ebfu m\u1ed9t ph\u1ea7n duy nh\u1ea5t ph\u1ea3i x\u1eed l\u00fd t\u1ea5t c\u1ea3 c\u00e1c y\u00eau c\u1ea7u b\u00ean ngo\u00e0i th\u00f4ng qua m\u1ed9t k\u1ebft n\u1ed1i \u1ee7y quy\u1ec1n, th\u00ec ph\u1ea7n \u0111\u00f3 tr\u1edf th\u00e0nh \u0111i\u1ec3m l\u1ed7i nghi\u00eam tr\u1ecdng. S\u01a1 \u0111\u1ed3 l\u00e0m r\u00f5 m\u1ed1i ph\u1ee5 thu\u1ed9c n\u00e0y.<\/p>\n

    \ud83e\udded Khung ra quy\u1ebft \u0111\u1ecbnh cho c\u00e1c tr\u01b0\u1edfng nh\u00f3m k\u1ef9 thu\u1eadt<\/h2>\n

    Vi\u1ec7c \u00e1p d\u1ee5ng lo\u1ea1i s\u01a1 \u0111\u1ed3 n\u00e0y l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn chi\u1ebfn l\u01b0\u1ee3c. N\u00f3 t\u1ed1n th\u1eddi gian t\u00e0i li\u1ec7u h\u00f3a v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng nh\u1eadn th\u1ee9c. B\u1ea1n ph\u1ea3i c\u00e2n nh\u1eafc l\u1ee3i \u00edch c\u1ee7a vi\u1ec7c nh\u00ecn th\u1ea5y c\u1ea5u tr\u00fac b\u00ean trong so v\u1edbi chi ph\u00ed b\u1ea3o tr\u00ec. C\u00e1c ti\u00eau ch\u00ed sau \u0111\u00e2y gi\u00fap x\u00e1c \u0111\u1ecbnh t\u00ednh c\u1ea7n thi\u1ebft.<\/p>\n

    \ud83d\udccc Ti\u00eau ch\u00ed \u00e1p d\u1ee5ng<\/h3>\n
      \n
    • Ng\u01b0\u1ee1ng \u0111\u1ed9 ph\u1ee9c t\u1ea1p:<\/strong> N\u1ebfu m\u1ed9t l\u1edbp ch\u1ee9a h\u01a1n n\u0103m ph\u1ea7n n\u1ed9i b\u1ed9 ho\u1eb7c logic t\u01b0\u01a1ng t\u00e1c ph\u1ee9c t\u1ea1p, s\u01a1 \u0111\u1ed3 l\u1edbp ti\u00eau chu\u1ea9n c\u00f3 th\u1ec3 kh\u00f4ng truy\u1ec1n \u0111\u1ea1t c\u1ea5u tr\u00fac m\u1ed9t c\u00e1ch \u0111\u1ea7y \u0111\u1ee7.<\/li>\n
    • \u0110\u1ed9 nh\u1ea1y giao di\u1ec7n:<\/strong> N\u1ebfu h\u1ec7 th\u1ed1ng ph\u1ee5 thu\u1ed9c m\u1ea1nh v\u00e0o c\u00e1c h\u1ee3p \u0111\u1ed3ng giao di\u1ec7n nghi\u00eam ng\u1eb7t, n\u01a1i m\u1ed9t thay \u0111\u1ed5i \u1edf m\u1ed9t ph\u1ea7n s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn to\u00e0n b\u1ed9, th\u00ec d\u00e2y n\u1ed1i n\u1ed9i b\u1ed9 ph\u1ea3i \u0111\u01b0\u1ee3c ghi ch\u00e9p l\u1ea1i.<\/li>\n
    • H\u1ea1n ch\u1ebf ph\u1ea7n c\u1ee9ng:<\/strong> Trong c\u00e1c h\u1ec7 th\u1ed1ng nh\u00fang ho\u1eb7c m\u00f4i tr\u01b0\u1eddng h\u1ea1n ch\u1ebf t\u00e0i nguy\u00ean, vi\u1ec7c th\u1ec3 hi\u1ec7n c\u00e1ch c\u00e1c ph\u1ea7n \u00e1nh x\u1ea1 \u0111\u1ebfn t\u00e0i nguy\u00ean v\u1eadt l\u00fd ho\u1eb7c logic th\u01b0\u1eddng l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft.<\/li>\n
    • M\u1eabu h\u1ee3p t\u00e1c:<\/strong> N\u1ebfu thi\u1ebft k\u1ebf ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c m\u1eabu c\u1ee5 th\u1ec3 nh\u01b0 Mediator ho\u1eb7c Facade, n\u01a1i c\u00e1c th\u00e0nh ph\u1ea7n b\u00ean trong h\u1ee3p t\u00e1c \u0111\u00e1ng k\u1ec3, c\u1ea5u tr\u00fac ph\u1ea3i r\u00f5 r\u00e0ng.<\/li>\n
    • Y\u00eau c\u1ea7u \u1ee7y quy\u1ec1n:<\/strong> N\u1ebfu h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng \u1ee7y quy\u1ec1n \u0111\u1ec3 che gi\u1ea5u chi ti\u1ebft tri\u1ec3n khai kh\u1ecfi kh\u00e1ch h\u00e0ng b\u00ean ngo\u00e0i, s\u01a1 \u0111\u1ed3 n\u00e0y x\u00e1c nh\u1eadn c\u00e1c \u0111\u01b0\u1eddng \u1ee7y quy\u1ec1n.<\/li>\n<\/ul>\n

      \ud83d\udccc Ti\u00eau ch\u00ed tr\u00e1nh s\u1eed d\u1ee5ng<\/h3>\n
        \n
      • T\u1ed5ng h\u1ee3p \u0111\u01a1n gi\u1ea3n:<\/strong> N\u1ebfu m\u1ed9t l\u1edbp ch\u1ec9 gi\u1eef tham chi\u1ebfu \u0111\u1ebfn m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c m\u00e0 kh\u00f4ng c\u00f3 t\u01b0\u01a1ng t\u00e1c n\u1ed9i b\u1ed9 ph\u1ee9c t\u1ea1p, th\u00ec m\u1ed1i quan h\u1ec7 ti\u00eau chu\u1ea9n l\u00e0 \u0111\u1ee7.<\/li>\n
      • Ki\u1ebfn tr\u00fac c\u1ea5p cao:<\/strong> \u0110\u1ed1i v\u1edbi c\u00e1c quan \u0111i\u1ec3m c\u1ea5p h\u1ec7 th\u1ed1ng, s\u01a1 \u0111\u1ed3 Th\u00e0nh ph\u1ea7n ho\u1eb7c S\u01a1 \u0111\u1ed3 Tri\u1ec3n khai cung c\u1ea5p s\u1ef1 tr\u1eebu t\u01b0\u1ee3ng t\u1ed1t h\u01a1n so v\u1edbi c\u1ea5u tr\u00fac l\u1edbp n\u1ed9i b\u1ed9.<\/li>\n
      • T\u1eadp trung v\u00e0o h\u00e0nh vi \u0111\u1ed9ng:<\/strong> N\u1ebfu tr\u1ecdng t\u00e2m l\u00e0 thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i ho\u1eb7c th\u1ee9 t\u1ef1 tin nh\u1eafn, s\u01a1 \u0111\u1ed3 Chu\u1ed7i ho\u1eb7c S\u01a1 \u0111\u1ed3 Tr\u1ea1ng th\u00e1i s\u1ebd ph\u00f9 h\u1ee3p h\u01a1n.<\/li>\n
      • Ng\u00e2n s\u00e1ch b\u1ea3o tr\u00ec th\u1ea5p:<\/strong> Nh\u1eefng s\u01a1 \u0111\u1ed3 n\u00e0y d\u1ec5 tr\u1edf n\u00ean l\u1ed7i th\u1eddi nhanh ch\u00f3ng n\u1ebfu c\u1ea5u tr\u00fac n\u1ed9i b\u1ed9 thay \u0111\u1ed5i th\u01b0\u1eddng xuy\u00ean. N\u1ebfu vi\u1ec7c t\u00e1i c\u1ea5u tr\u00fac di\u1ec5n ra li\u00ean t\u1ee5c, kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng.<\/li>\n<\/ul>\n

        \ud83d\udcca Ma tr\u1eadn so s\u00e1nh: Lo\u1ea1i s\u01a1 \u0111\u1ed3<\/h2>\n

        Vi\u1ec7c ch\u1ecdn \u0111\u00fang c\u00f4ng c\u1ee5 \u0111\u00f2i h\u1ecfi hi\u1ec3u r\u00f5 ph\u1ea1m vi c\u1ee7a t\u1eebng th\u00e0nh ph\u1ea7n. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y so s\u00e1nh S\u01a1 \u0111\u1ed3 C\u1ea5u tr\u00fac H\u1ee3p th\u00e0nh v\u1edbi c\u00e1c s\u01a1 \u0111\u1ed3 UML ph\u1ed5 bi\u1ebfn kh\u00e1c.<\/p>\n\n\n\n\n\n\n\n\n
        Lo\u1ea1i s\u01a1 \u0111\u1ed3<\/th>\nTr\u1ecdng t\u00e2m ch\u00ednh<\/th>\nS\u1eed d\u1ee5ng t\u1ed1t nh\u1ea5t cho<\/th>\nM\u1ee9c \u0111\u1ed9 ph\u1ee9c t\u1ea1p<\/th>\n<\/tr>\n<\/thead>\n
        S\u01a1 \u0111\u1ed3 L\u1edbp<\/strong><\/td>\nC\u1ea5u tr\u00fac t\u0129nh, thu\u1ed9c t\u00ednh, ph\u01b0\u01a1ng th\u1ee9c<\/td>\nM\u1ed1i quan h\u1ec7 \u0111\u1ed1i t\u01b0\u1ee3ng chung<\/td>\nTh\u1ea5p \u0111\u1ebfn Trung b\u00ecnh<\/td>\n<\/tr>\n
        S\u01a1 \u0111\u1ed3 Th\u00e0nh ph\u1ea7n<\/strong><\/td>\nC\u00e1c module c\u1ea5p cao, ph\u1ee5 thu\u1ed9c<\/td>\nPh\u00e2n r\u00e3 h\u1ec7 th\u1ed1ng<\/td>\nTrung b\u00ecnh<\/td>\n<\/tr>\n
        S\u01a1 \u0111\u1ed3 C\u1ea5u tr\u00fac H\u1ee3p th\u00e0nh<\/strong><\/td>\nC\u00e1c b\u1ed9 ph\u1eadn n\u1ed9i b\u1ed9, c\u1ed5ng, k\u1ebft n\u1ed1i<\/td>\nH\u1ee3p t\u00e1c n\u1ed9i b\u1ed9, h\u1ee3p \u0111\u1ed3ng giao di\u1ec7n<\/td>\nCao<\/td>\n<\/tr>\n
        S\u01a1 \u0111\u1ed3 tr\u00ecnh t\u1ef1<\/strong><\/td>\nT\u01b0\u01a1ng t\u00e1c theo th\u1ee9 t\u1ef1 th\u1eddi gian<\/td>\nLu\u1ed3ng h\u00e0nh vi, truy\u1ec1n tin nh\u1eafn<\/td>\nTrung b\u00ecnh \u0111\u1ebfn Cao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        L\u01b0u \u00fd r\u1eb1ng S\u01a1 \u0111\u1ed3 C\u1ea5u tr\u00fac H\u1ee3p th\u00e0nh n\u1eb1m \u1edf m\u1ee9c \u0111\u1ed9 ph\u1ee9c t\u1ea1p cao h\u01a1n. N\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 thay th\u1ebf cho S\u01a1 \u0111\u1ed3 L\u1edbp m\u00e0 l\u00e0 m\u1ed9t b\u1ed5 sung. N\u00f3 tr\u1ea3 l\u1eddi nh\u1eefng c\u00e2u h\u1ecfi m\u00e0 S\u01a1 \u0111\u1ed3 L\u1edbp kh\u00f4ng th\u1ec3 tr\u1ea3 l\u1eddi:C\u00e1c b\u1ed9 ph\u1eadn b\u00ean trong n\u00f3i chuy\u1ec7n v\u1edbi nhau nh\u01b0 th\u1ebf n\u00e0o?<\/em><\/p>\n

        \ud83d\ude80 Ph\u00e2n t\u00edch T\u00ecnh hu\u1ed1ng: \u1ee8ng d\u1ee5ng Th\u1ef1c t\u1ebf<\/h2>\n

        C\u00e1c quy\u1ebft \u0111\u1ecbnh k\u1ef9 thu\u1eadt t\u1ed1t nh\u1ea5t \u0111\u01b0\u1ee3c \u0111\u01b0a ra th\u00f4ng qua c\u00e1c v\u00ed d\u1ee5 c\u1ee5 th\u1ec3. H\u00e3y xem x\u00e9t c\u00e1c t\u00ecnh hu\u1ed1ng sau \u0111\u00e2y, n\u01a1i s\u01a1 \u0111\u1ed3 n\u00e0y mang l\u1ea1i gi\u00e1 tr\u1ecb.<\/p>\n

        \ud83d\udda5\ufe0f T\u00ecnh hu\u1ed1ng 1: T\u00edch h\u1ee3p Giao di\u1ec7n Ng\u01b0\u1eddi d\u00f9ng Ph\u1ee9c t\u1ea1p<\/h3>\n

        Trong m\u1ed9t khung tr\u00ecnh duy\u1ec7t \u0111\u1ed3 h\u1ecda, m\u1ed9t th\u00e0nh ph\u1ea7n Window c\u00f3 th\u1ec3 ch\u1ee9a m\u1ed9t Toolbar, m\u1ed9t MenuBar v\u00e0 m\u1ed9t ContentPane. M\u1ed7i th\u00e0nh ph\u1ea7n n\u00e0y \u0111\u1ec1u l\u00e0 m\u1ed9t ph\u1ea7n. L\u1edbp Window ph\u1ea3i x\u00e1c \u0111\u1ecbnh c\u00e1c c\u1ed5ng cho \u0111\u1ea7u v\u00e0o t\u1eeb ng\u01b0\u1eddi d\u00f9ng. M\u1ed9t k\u1ebft n\u1ed1i \u1ee7y quy\u1ec1n c\u00f3 th\u1ec3 \u0111\u1ecbnh tuy\u1ebfn m\u1ed9t c\u00fa nh\u1ea5p chu\u1ed9t t\u1eeb c\u1ed5ng Window \u0111\u1ebfn ph\u1ea7n ContentPane. Kh\u00f4ng c\u00f3 S\u01a1 \u0111\u1ed3 C\u1ea5u tr\u00fac H\u1ee3p th\u00e0nh, logic \u0111\u1ecbnh tuy\u1ebfn n\u00e0y s\u1ebd ch\u1ec9 \u0111\u01b0\u1ee3c ng\u1ea7m hi\u1ec3u trong m\u00e3 ngu\u1ed3n. S\u01a1 \u0111\u1ed3 n\u00e0y l\u00e0m r\u00f5 \u0111i\u1ec1u \u0111\u00f3, gi\u00fap c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n hi\u1ec3u r\u00f5 n\u01a1i c\u1ea7n ch\u00e8n x\u1eed l\u00fd s\u1ef1 ki\u1ec7n t\u00f9y ch\u1ec9nh.<\/p>\n

        \u2699\ufe0f T\u00ecnh hu\u1ed1ng 2: H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n nh\u00fang<\/h3>\n

        M\u1ed9t b\u1ed9 \u0111i\u1ec1u khi\u1ec3n nh\u00fang cho h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1 c\u00f3 th\u1ec3 bao g\u1ed3m m\u1ed9t ph\u1ea7n PowerManager, m\u1ed9t ph\u1ea7n SensorReader v\u00e0 m\u1ed9t ph\u1ea7n CommunicationInterface. C\u1ed5ng CommunicationInterface ph\u1ea3i x\u1eed l\u00fd c\u00e1c l\u1ec7nh t\u1eeb b\u00ean ngo\u00e0i. N\u1ebfu ph\u1ea7n PowerManager th\u1ea5t b\u1ea1i, CommunicationInterface ph\u1ea3i b\u00e1o tr\u1ea1ng th\u00e1i. S\u01a1 \u0111\u1ed3 l\u00e0m r\u00f5 m\u1ed1i quan h\u1ec7 ph\u1ee5 thu\u1ed9c gi\u1eefa SensorReader v\u00e0 PowerManager. N\u00f3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng vi\u1ec7c ph\u00e2n b\u1ed5 t\u00e0i nguy\u00ean b\u00ean trong tu\u00e2n th\u1ee7 c\u00e1c gi\u1edbi h\u1ea1n v\u1ec1 th\u1eddi gian c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/p>\n

        \ud83d\udd12 T\u00ecnh hu\u1ed1ng 3: Th\u1ef1c thi Ranh gi\u1edbi B\u1ea3o m\u1eadt<\/h3>\n

        Trong m\u1ed9t module b\u1ea3o m\u1eadt, m\u1ed9t th\u00e0nh ph\u1ea7n Firewall c\u00f3 th\u1ec3 ch\u1ee9a m\u1ed9t InspectionEngine v\u00e0 m\u1ed9t LoggingService. C\u00e1c y\u00eau c\u1ea7u t\u1eeb b\u00ean ngo\u00e0i \u0111i v\u00e0o th\u00f4ng qua m\u1ed9t c\u1ed5ng c\u1ee5 th\u1ec3. InspectionEngine x\u1eed l\u00fd y\u00eau c\u1ea7u. N\u1ebfu v\u01b0\u1ee3t qua, n\u00f3 s\u1ebd \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n cho LoggingService. S\u01a1 \u0111\u1ed3 tr\u1ef1c quan h\u00f3a c\u00e1c ranh gi\u1edbi tin c\u1eady. N\u00f3 cho th\u1ea5y nh\u1eefng ph\u1ea7n n\u00e0o \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng ra m\u1ea1ng v\u00e0 nh\u1eefng ph\u1ea7n n\u00e0o ch\u1ec9 n\u1ed9i b\u1ed9. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng cho c\u00e1c cu\u1ed9c ki\u1ec3m to\u00e1n b\u1ea3o m\u1eadt.<\/p>\n

        \u26a0\ufe0f Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 M\u1eabu h\u00ecnh ch\u1ed1ng l\u1ea1i<\/h2>\n

        Ngay c\u1ea3 v\u1edbi nh\u1eefng \u00fd \u0111\u1ecbnh t\u1ed1t, t\u00e0i li\u1ec7u c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh g\u00e1nh n\u1eb7ng. C\u00e1c tr\u01b0\u1edfng nh\u00f3m k\u1ef9 thu\u1eadt c\u1ea7n tr\u00e1nh nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn n\u00e0y.<\/p>\n

          \n
        • V\u1ebd s\u01a1 \u0111\u1ed3 qu\u00e1 m\u1ee9c:<\/strong>Kh\u00f4ng v\u1ebd s\u01a1 \u0111\u1ed3 cho m\u1ecdi l\u1edbp. N\u1ebfu m\u1ed9t l\u1edbp kh\u00f4ng c\u00f3 c\u1ea5u tr\u00fac b\u00ean trong, th\u00ec S\u01a1 \u0111\u1ed3 C\u1ea5u tr\u00fac H\u1ee3p th\u00e0nh l\u00e0 th\u1eeba. H\u00e3y t\u1eadp trung v\u00e0o nh\u1eefng l\u1edbp th\u1ec3 hi\u1ec7n s\u1ef1 h\u1ee3p t\u00e1c n\u1ed9i b\u1ed9 ph\u1ee9c t\u1ea1p.<\/li>\n
        • S\u1ef1 nh\u1ea7m l\u1eabn v\u1ec1 t\u00ean g\u1ecdi:<\/strong>\u0110\u1ea3m b\u1ea3o ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng gi\u1eefa Ports v\u00e0 Interfaces. M\u1ed9t Port l\u00e0 \u0111i\u1ec3m t\u01b0\u01a1ng t\u00e1c; m\u1ed9t Interface l\u00e0 m\u1ed9t h\u1ee3p \u0111\u1ed3ng. Vi\u1ec7c nh\u1ea7m l\u1eabn gi\u1eefa ch\u00fang d\u1eabn \u0111\u1ebfn l\u1ed7i tri\u1ec3n khai.<\/li>\n
        • B\u1ecf qua T\u00ednh \u0111a d\u1ea1ng:<\/strong>C\u00e1c ph\u1ea7n c\u00f3 th\u1ec3 c\u00f3 t\u00ednh \u0111a d\u1ea1ng. M\u1ed9t Window duy nh\u1ea5t c\u00f3 th\u1ec3 c\u00f3 kh\u00f4ng ho\u1eb7c nhi\u1ec1u ph\u1ea7n Toolbar. Vi\u1ec7c kh\u00f4ng ghi ch\u00fa \u0111i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn l\u1ed7i th\u1eddi gian ch\u1ea1y li\u00ean quan \u0111\u1ebfn vi\u1ec7c kh\u1edfi t\u1ea1o \u0111\u1ed1i t\u01b0\u1ee3ng.<\/li>\n
        • Gi\u1ea3 \u0111\u1ecbnh T\u0129nh:<\/strong>Gi\u1ea3 \u0111\u1ecbnh c\u00e1c ph\u1ea7n l\u00e0 t\u0129nh. Trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ed9ng, c\u00e1c ph\u1ea7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1ea1i th\u1eddi \u0111i\u1ec3m ch\u1ea1y. S\u01a1 \u0111\u1ed3 c\u1ea7n ghi ch\u00fa r\u00f5 c\u00e1c ph\u1ea7n l\u00e0 \u0111\u1ed9ng hay t\u0129nh.<\/li>\n
        • M\u1ea5t \u0111i B\u1ed1i c\u1ea3nh:<\/strong>M\u1ed9t s\u01a1 \u0111\u1ed3 th\u1ec3 hi\u1ec7n c\u00e1c ph\u1ea7n b\u00ean trong m\u00e0 kh\u00f4ng cho th\u1ea5y c\u00e1ch n\u00f3 k\u1ebft n\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i l\u00e0 v\u00f4 d\u1ee5ng. Lu\u00f4n lu\u00f4n bao g\u1ed3m c\u00e1c c\u1ed5ng b\u00ean ngo\u00e0i t\u01b0\u01a1ng t\u00e1c v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/li>\n<\/ul>\n

          \ud83d\udee1\ufe0f C\u00e1c Th\u1ef1c h\u00e0nh T\u1ed1t nh\u1ea5t cho Tri\u1ec3n khai<\/h2>\n

          \u0110\u1ec3 t\u1ed1i \u0111a h\u00f3a gi\u00e1 tr\u1ecb c\u1ee7a c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y, h\u00e3y tu\u00e2n theo c\u00e1c h\u01b0\u1edbng d\u1eabn v\u1eadn h\u00e0nh sau.<\/p>\n

            \n
          • Ti\u00eau chu\u1ea9n h\u00f3a K\u00fd hi\u1ec7u:<\/strong> \u0110\u1ea3m b\u1ea3o \u0111\u1ed9i ng\u0169 \u0111\u1ed3ng thu\u1eadn v\u1ec1 c\u00e1ch bi\u1ec3u di\u1ec5n c\u00e1c c\u1ed5ng v\u00e0 k\u1ebft n\u1ed1i. T\u00ednh nh\u1ea5t qu\u00e1n gi\u00fap gi\u1ea3m t\u1ea3i nh\u1eadn th\u1ee9c.<\/li>\n
          • Gi\u1eef t\u00ednh tr\u1eebu t\u01b0\u1ee3ng:<\/strong> \u0110\u1eebng bao g\u1ed3m m\u1ecdi thu\u1ed9c t\u00ednh. T\u1eadp trung v\u00e0o c\u00e1c m\u1ed1i quan h\u1ec7 c\u1ea5u tr\u00fac. N\u1ebfu m\u1ed9t b\u1ed9 ph\u1eadn c\u00f3 50 thu\u1ed9c t\u00ednh, ch\u1ec9 c\u1ea7n li\u1ec7t k\u00ea t\u00ean v\u00e0 lo\u1ea1i b\u1ed9 ph\u1eadn \u0111\u00f3.<\/li>\n
          • Li\u00ean k\u1ebft v\u1edbi m\u00e3 ngu\u1ed3n:<\/strong> \u0110\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 ph\u1ea3n \u00e1nh tr\u1ef1c ti\u1ebfp c\u1ea5u tr\u00fac m\u00e3 ngu\u1ed3n g\u1ed1c. N\u1ebfu m\u00e3 ngu\u1ed3n t\u00e1ch l\u1ea1i c\u00e1c b\u1ed9 ph\u1eadn n\u1ed9i b\u1ed9, s\u01a1 \u0111\u1ed3 ph\u1ea3i \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt ngay l\u1eadp t\u1ee9c.<\/li>\n
          • S\u1eed d\u1ee5ng \u1ee7y quy\u1ec1n m\u1ed9t c\u00e1ch kh\u00f4n ngoan:<\/strong> Ch\u1ec9 s\u1eed d\u1ee5ng k\u1ebft n\u1ed1i \u1ee7y quy\u1ec1n khi c\u1ea7n c\u00f4ng khai giao di\u1ec7n c\u1ee7a m\u1ed9t b\u1ed9 ph\u1eadn n\u1ed9i b\u1ed9 ra b\u00ean ngo\u00e0i. Kh\u00f4ng d\u00f9ng ch\u00fang cho giao ti\u1ebfp ch\u1ec9 n\u1ed9i b\u1ed9.<\/li>\n
          • Ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n:<\/strong> L\u01b0u c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y trong h\u1ec7 th\u1ed1ng ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n c\u00f9ng v\u1edbi m\u00e3 ngu\u1ed3n. Xem ch\u00fang nh\u01b0 c\u00e1c t\u00e1c ph\u1ea9m s\u1ed1ng \u0111\u1ed9ng, ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u00e0i li\u1ec7u m\u1ed9t l\u1ea7n.<\/li>\n<\/ul>\n

            \ud83d\udd17 T\u00edch h\u1ee3p v\u1edbi c\u00e1c t\u00e0i li\u1ec7u UML kh\u00e1c<\/h2>\n

            S\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac t\u1ed5ng h\u1ee3p kh\u00f4ng t\u1ed3n t\u1ea1i m\u1ed9t c\u00e1ch bi\u1ec7t. N\u00f3 t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c t\u00e0i li\u1ec7u m\u00f4 h\u00ecnh h\u00f3a kh\u00e1c \u0111\u1ec3 t\u1ea1o n\u00ean b\u1ee9c tranh to\u00e0n di\u1ec7n.<\/p>\n

              \n
            • S\u01a1 \u0111\u1ed3 l\u1edbp:<\/strong> Ch\u00ednh b\u1ed9 ph\u00e2n lo\u1ea1i t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong m\u1ed9t s\u01a1 \u0111\u1ed3 l\u1edbp. S\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac t\u1ed5ng h\u1ee3p m\u1edf r\u1ed9ng th\u00eam \u0111\u1ecbnh ngh\u0129a n\u00e0y.<\/li>\n
            • S\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1:<\/strong> S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 \u0111\u1ec3 m\u00f4 t\u1ea3 lu\u1ed3ng tin nh\u1eafn \u0111i v\u00e0o c\u00e1c c\u1ed5ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong s\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac t\u1ed5ng h\u1ee3p.<\/li>\n
            • S\u01a1 \u0111\u1ed3 tri\u1ec3n khai:<\/strong> B\u1ea3n \u0111\u1ed3 h\u00f3a vi\u1ec7c tri\u1ec3n khai v\u1eadt l\u00fd c\u1ee7a b\u1ed9 ph\u00e2n lo\u1ea1i t\u1ed5ng h\u1ee3p v\u00e0o c\u1ea5u tr\u00fac logic \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n trong s\u01a1 \u0111\u1ed3.<\/li>\n
            • S\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i:<\/strong> N\u1ebfu m\u1ed9t b\u1ed9 ph\u1eadn thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i d\u1ef1a tr\u00ean c\u00e1c t\u01b0\u01a1ng t\u00e1c n\u1ed9i b\u1ed9, h\u00e3y li\u00ean k\u1ebft m\u00e1y tr\u1ea1ng th\u00e1i v\u1edbi b\u1ed9 ph\u1eadn c\u1ee5 th\u1ec3 trong c\u1ea5u tr\u00fac t\u1ed5ng h\u1ee3p.<\/li>\n<\/ul>\n

              \ud83d\udcdd Nh\u1eefng suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 s\u1ef1 r\u00f5 r\u00e0ng c\u1ea5u tr\u00fac<\/h2>\n

              Vi\u1ec7c quy\u1ebft \u0111\u1ecbnh s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 c\u1ea5u tr\u00fac t\u1ed5ng h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o nhu c\u1ea7u v\u1ec1 t\u00ednh minh b\u1ea1ch. Khi s\u1ef1 h\u1ee3p t\u00e1c n\u1ed9i b\u1ed9 tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p \u0111\u1ebfn m\u1ee9c che khu\u1ea5t h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng, s\u01a1 \u0111\u1ed3 n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn c\u1ea7n thi\u1ebft. N\u00f3 bi\u1ebfn logic m\u00e3 ngu\u1ed3n ng\u1ea7m th\u00e0nh c\u00e1c h\u1ee3p \u0111\u1ed3ng ki\u1ebfn tr\u00fac r\u00f5 r\u00e0ng.<\/p>\n

              C\u00e1c tr\u01b0\u1edfng nh\u00f3m k\u1ef9 thu\u1eadt ph\u1ea3i c\u00e2n b\u1eb1ng nhu c\u1ea7u chi ti\u1ebft v\u1edbi r\u1ee7i ro suy gi\u1ea3m t\u00e0i li\u1ec7u. N\u1ebfu c\u1ea5u tr\u00fac n\u1ed9i b\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a h\u1ec7 th\u1ed1ng, th\u00ec vi\u1ec7c \u0111\u1ea7u t\u01b0 l\u00e0 h\u1ee3p l\u00fd. N\u1ebfu c\u1ea5u tr\u00fac thay \u0111\u1ed5i th\u01b0\u1eddng xuy\u00ean v\u00e0 tr\u1ecdng t\u00e2m l\u00e0 h\u00e0nh vi b\u00ean ngo\u00e0i, c\u00e1c t\u00e0i li\u1ec7u kh\u00e1c c\u00f3 th\u1ec3 ph\u00f9 h\u1ee3p h\u01a1n.<\/p>\n

              Cu\u1ed1i c\u00f9ng, m\u1ee5c ti\u00eau l\u00e0 s\u1ef1 r\u00f5 r\u00e0ng. D\u00f9 b\u1ea1n ch\u1ecdn s\u01a1 \u0111\u1ed3 n\u00e0y hay m\u1ed9t s\u01a1 \u0111\u1ed3 kh\u00e1c, m\u1ee5c ti\u00eau v\u1eabn nh\u01b0 nhau: \u0111\u1ea3m b\u1ea3o m\u1ecdi th\u00e0nh vi\u00ean trong \u0111\u1ed9i hi\u1ec3u h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng nh\u01b0 th\u1ebf n\u00e0o v\u00e0 ho\u1ea1t \u0111\u1ed9ng n\u1ed9i b\u1ed9 ra sao. B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau ch\u00ed \u0111\u01b0\u1ee3c n\u00eau trong h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh khi n\u00e0o c\u00f4ng c\u1ee5 c\u1ee5 th\u1ec3 n\u00e0y l\u00e0m phong ph\u00fa th\u00eam c\u00e2u chuy\u1ec7n ki\u1ebfn tr\u00fac v\u00e0 khi n\u00e0o n\u00f3 l\u1ea1i l\u00e0m gi\u1ea3m \u0111i \u0111i\u1ec1u \u0111\u00f3.<\/p>\n","protected":false},"excerpt":{"rendered":"

              Ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng \u0111\u00f2i h\u1ecfi s\u1ef1 ch\u00ednh x\u00e1c. L\u00e0 c\u00e1c tr\u01b0\u1edfng nh\u00f3m k\u1ef9 thu\u1eadt, b\u1ea1n th\u01b0\u1eddng ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi th\u00e1ch th\u1ee9c truy\u1ec1n \u0111\u1ea1t c\u00e1ch c\u00e1c c\u1ea5u tr\u00fac n\u1ed9i b\u1ed9 ph\u1ee9c t\u1ea1p ho\u1ea1t \u0111\u1ed9ng trong m\u1ed9t h\u1ec7 sinh th\u00e1i l\u1edbn h\u01a1n. Trong khi s\u01a1 \u0111\u1ed3 l\u1edbp th\u1ec3 hi\u1ec7n c\u00e1c m\u1ed1i quan h\u1ec7 v\u00e0 s\u01a1 […]<\/p>\n","protected":false},"author":1,"featured_media":1181,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[47,51],"class_list":["post-1180","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unified-modeling-modeling","tag-academic","tag-composite-structure-diagram"],"yoast_head":"\nWhen to Use a Composite Structure Diagram: A Guide<\/title>\n<meta name=\"description\" content=\"Learn when to use a Composite Structure Diagram for UML. 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