{"id":9119,"date":"2022-02-28T09:15:19","date_gmt":"2022-02-28T09:15:19","guid":{"rendered":"https:\/\/www.cybermedian.com\/vn\/?p=9119"},"modified":"2025-02-07T10:35:47","modified_gmt":"2025-02-07T02:35:47","slug":"a-quick-guide-to-use-case-modeling","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/vn\/a-quick-guide-to-use-case-modeling\/","title":{"rendered":"H\u01b0\u1edbng D\u1eabn Nhanh V\u1ec1 M\u00f4 H\u00ecnh Tr\u01b0\u1eddng H\u1ee3p S\u1eed D\u1ee5ng"},"content":{"rendered":"

M\u00f4 h\u00ecnh tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/a>l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1eefu \u00edch \u0111\u1ec3 ghi l\u1ea1i c\u00e1c y\u00eau c\u1ea7u. N\u00f3 cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda c\u1ee7a c\u00e1c y\u00eau c\u1ea7u c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m.<\/p>\n

V\u1edbi s\u1ef1 c\u00f4ng b\u1ed1 c\u1ee7aIvar Jacobson<\/a>(1991) cu\u1ed1n s\u00e1chK\u1ef9 Ngh\u1ec7 Ph\u1ea7n M\u1ec1m H\u01b0\u1edbng \u0110\u1ed1i T\u01b0\u1ee3ng, M\u1ed9t C\u00e1ch Ti\u1ebfp C\u1eadn D\u1ef1a Tr\u00ean Tr\u01b0\u1eddng H\u1ee3p S\u1eed D\u1ee5ng<\/a>, m\u00f4 h\u00ecnh tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch th\u1ef1c ti\u1ec5n\u201d. Ng\u00e0y nay, Jacobson ti\u1ebfp t\u1ee5c th\u00fac \u0111\u1ea9y c\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y \u0111\u1ebfn ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng v\u00e0 \u0111\u00e3 n\u00e2ng c\u1ea5p n\u00f3 l\u00ean Use Case 2.0, m\u00e0 ch\u00ednh th\u1ee9c l\u00e0 m\u1ed9t trong s\u1ed114 lo\u1ea1i bi\u1ec3u \u0111\u1ed3 UML<\/a>.<\/p>\n

B\u1edfi v\u00ec m\u00f4 h\u00ecnh tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u01a1n gi\u1ea3n v\u1ec1 kh\u00e1i ni\u1ec7m v\u00e0 h\u00ecnh th\u1ee9c, n\u00ean t\u01b0\u01a1ng \u0111\u1ed1i d\u1ec5 d\u00e0ng \u0111\u1ec3 th\u1ea3o lu\u1eadn v\u1ec1 t\u00ednh ch\u00ednh x\u00e1c c\u1ee7a n\u00f3 v\u1edbi nh\u00e2n vi\u00ean kh\u00f4ng k\u1ef9 thu\u1eadt (nh\u01b0 kh\u00e1ch h\u00e0ng).<\/p>\n

M\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t quy tr\u00ecnh, qu\u00e1 tr\u00ecnh, ho\u1eb7c ch\u1ee9c n\u0103ng.<\/p>\n

C\u00e1c Th\u00e0nh Ph\u1ea7n C\u1ee7a Bi\u1ec3u \u0110\u1ed3 Tr\u01b0\u1eddng H\u1ee3p S\u1eed D\u1ee5ng<\/h2>\n

C\u00e1cth\u00e0nh ph\u1ea7n c\u1ee7a m\u1ed9t bi\u1ec3u \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/a>l\u00e0 c\u00e1c di\u1ec5n vi\u00ean (th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i) v\u00e0 ch\u00ednh tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng. N\u00f3i chung, m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng l\u00e0 m\u1ed9t \u0111\u01a1n v\u1ecb ch\u1ee9c n\u0103ng (y\u00eau c\u1ea7u) ho\u1eb7c d\u1ecbch v\u1ee5 trong m\u1ed9t h\u1ec7 th\u1ed1ng.<\/p>\n

Di\u1ec5n vi\u00ean<\/h3>\n

M\u1ed9tdi\u1ec5n vi\u00ean<\/a>l\u00e0 b\u1ea5t k\u1ef3 th\u1ef1c th\u1ec3 n\u00e0o b\u00ean ngo\u00e0i h\u1ec7 th\u1ed1ng thi\u1ebft k\u1ebf, cho d\u00f9 \u0111\u00f3 l\u00e0 m\u1ed9t ng\u01b0\u1eddi hay m\u1ed9t th\u1ef1c th\u1ec3 kh\u00f4ng ph\u1ea3i con ng\u01b0\u1eddi kh\u00e1c. M\u1ed9t ng\u01b0\u1eddi d\u00f9ng c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng l\u00e0 m\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh c\u1ee7a m\u1ed9t di\u1ec5n vi\u00ean. C\u00e1c lo\u1ea1i di\u1ec5n vi\u00ean kh\u00e1c bao g\u1ed3m c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m \u0111ang \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng hi\u1ec7n t\u1ea1i (v\u00ed d\u1ee5: m\u1ed9t h\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u), ph\u1ea7n c\u1ee9ng b\u00ean ngo\u00e0i nh\u01b0 c\u1ea3m bi\u1ebfn v\u00e0 nhi\u1ec1u th\u1ee9 kh\u00e1c.\"Types<\/p>\n

C\u00f3 hai k\u00fd hi\u1ec7u trong\u0111\u1eb7c t\u1ea3 UML<\/a>:<\/p>\n

\"\"<\/p>\n

S\u1eed d\u1ee5ng h\u00ecnh ng\u01b0\u1eddi que cho c\u00e1c di\u1ec5n vi\u00ean th\u00ec bi\u1ec3u c\u1ea3m h\u01a1n, nh\u01b0ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 nh\u1ea7m l\u1eabn n\u1ebfu di\u1ec5n vi\u00ean kh\u00f4ng th\u1ef1c s\u1ef1 l\u00e0 m\u1ed9t ng\u01b0\u1eddi, m\u00e0 l\u00e0 m\u1ed9t m\u00e1y ho\u1eb7c thi\u1ebft b\u1ecb b\u00ean ngo\u00e0i. K\u00fd hi\u1ec7u h\u00ecnh ch\u1eef nh\u1eadt l\u00e0 k\u00fd hi\u1ec7u chu\u1ea9nk\u00fd hi\u1ec7u UML<\/a>cho m\u1ed9tl\u1edbp<\/a>.<\/p>\n

M\u1ed9t Di\u1ec5n vi\u00ean l\u00e0 Vai tr\u00f2 Thay v\u00ec M\u1ed9t Ng\u01b0\u1eddi Th\u1ef1c<\/strong><\/p>\n

M\u1ed9t di\u1ec5n vi\u00ean \u0111\u1ea1i di\u1ec7n cho vai tr\u00f2 c\u1ee7a th\u1ef1c th\u1ec3 t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng hi\u1ec7n t\u1ea1i, kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t th\u1ec3 hi\u1ec7n.<\/span>K\u00fd hi\u1ec7u di\u1ec5n vi\u00ean ch\u1ec9 ra r\u1eb1ng th\u1ef1c th\u1ec3 l\u00e0 m\u1ed9t l\u1edbp thay v\u00ec m\u1ed9t th\u1ec3 hi\u1ec7n c\u1ee5 th\u1ec3 (t\u1ee9c l\u00e0 m\u1ed9t ng\u01b0\u1eddi d\u00f9ng th\u1ef1c s\u1ef1 nh\u01b0 John ho\u1eb7c Mary). L\u00fd do m\u00e0 m\u1ed9t di\u1ec5n vi\u00ean l\u00e0 m\u1ed9t lo\u1ea1i l\u1edbp l\u00e0 v\u00ec n\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 di\u1ec5n vi\u00ean \u0111\u00f3, m\u00e0 l\u00e0vai tr\u00f2 m\u00e0 anh\/c\u00f4 \u1ea5y \u0111\u1ea3m nh\u1eadn.<\/p>\n

V\u00ed d\u1ee5, m\u1ed9t di\u1ec5n vi\u00ean c\u00f3 th\u1ec3 \u0111\u1ea1i di\u1ec7n cho kh\u00e1ch h\u00e0ng c\u1ee7a m\u1ed9t ng\u00e2n h\u00e0ng, thay v\u00ec ch\u1ec9 \u0111\u1ecbnh m\u1ed9t di\u1ec5n vi\u00ean ri\u00eang cho m\u1ed7i kh\u00e1ch h\u00e0ng. T\u01b0\u01a1ng t\u1ef1, c\u00f3 th\u1ec3 c\u00f3 m\u1ed9t di\u1ec5n vi\u00ean kh\u00e1c \u0111\u1ea1i di\u1ec7n cho gi\u00e1m \u0111\u1ed1c ng\u00e2n h\u00e0ng. Th\u00fa v\u1ecb l\u00e0, trong th\u1ebf gi\u1edbi th\u1ef1c, gi\u00e1m \u0111\u1ed1c c\u1ee7a m\u1ed9t ng\u00e2n h\u00e0ng c\u0169ng c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t kh\u00e1ch h\u00e0ng c\u1ee7a c\u00f9ng m\u1ed9t ng\u00e2n h\u00e0ng. N\u00f3i c\u00e1ch kh\u00e1c, c\u00f9ng m\u1ed9t ng\u01b0\u1eddi \u0111\u1ea3m nh\u1eadn vai tr\u00f2 c\u1ee7a c\u1ea3 kh\u00e1ch h\u00e0ng v\u00e0 gi\u00e1m \u0111\u1ed1c.<\/p>\n

Di\u1ec5n vi\u00ean Ch\u00ednh v\u00e0 Di\u1ec5n vi\u00ean Ph\u1ee5<\/strong><\/a><\/p>\n

Di\u1ec5n vi\u00ean Ch\u00ednh<\/strong>c\u1ee7a m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng l\u00e0 b\u00ean li\u00ean quan y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng cung c\u1ea5p d\u1ecbch v\u1ee5 c\u1ee7a n\u00f3. N\u00f3 c\u00f3 m\u1ed9t m\u1ee5c ti\u00eau li\u00ean quan \u0111\u1ebfn h\u1ec7 th\u1ed1ng – m\u1ed9t m\u1ee5c ti\u00eau c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng b\u1edfi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng. Di\u1ec5n vi\u00ean ch\u00ednh th\u01b0\u1eddng l\u00e0, nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng v\u1eady, di\u1ec5n vi\u00ean k\u00edch ho\u1ea1t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/p>\n

Di\u1ec5n vi\u00ean Ph\u1ee5<\/strong>\u0111\u01b0\u1ee3c h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng, nh\u01b0ng h\u1ecd kh\u00f4ng t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng m\u1ed9t c\u00e1ch \u0111\u1ed9c l\u1eadp. N\u00f3i c\u00e1ch kh\u00e1c, c\u00e1c di\u1ec5n vi\u00ean ph\u1ee5 kh\u00f4ng kh\u1edfi x\u01b0\u1edbng b\u1ea5t k\u1ef3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng n\u00e0o.<\/p>\n

C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c kh\u1edfi x\u01b0\u1edbng b\u1edfi c\u00e1c di\u1ec5n vi\u00ean ch\u00ednh. H\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng m\u1ed9t di\u1ec5n vi\u00ean ph\u1ee5 nh\u01b0 m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u th\u00f4ng qua m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng. M\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u00e0 c\u00e1c b\u00ean tham gia \u0111\u1ea1i di\u1ec7n cho m\u1ed9t giao ti\u1ebfp hai chi\u1ec1u.<\/p>\n

V\u00ec v\u1eady, \u0111\u1ed1i v\u1edbi m\u1ed7i tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c kh\u1edfi x\u01b0\u1edbng b\u1edfi m\u1ed9t di\u1ec5n vi\u00ean ch\u00ednh, tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng li\u00ean k\u1ebft ph\u1ea3i \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i. T\u01b0\u01a1ng t\u1ef1, \u0111\u1ed1i v\u1edbi m\u1ed7i m\u1ed1i quan h\u1ec7 gi\u1eefa m\u1ed9t di\u1ec5n vi\u00ean ph\u1ee5 v\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, giao ti\u1ebfp b\u1eaft \u0111\u1ea7u t\u1eeb tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u00e0 di\u1ec5n vi\u00ean ph\u1ee5 n\u00ean ph\u1ea3n h\u1ed3i l\u1ea1i s\u1ef1 kh\u1edfi x\u01b0\u1edbng.<\/p>\n

Tr\u01b0\u1eddng H\u1ee3p S\u1eed D\u1ee5ng<\/h3>\n

C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/strong>\u0111\u1ea1i di\u1ec7n cho c\u00e1c ch\u1ee9c n\u0103ng (th\u01b0\u1eddng l\u00e0 y\u00eau c\u1ea7u) d\u1ef1 ki\u1ebfn s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi h\u1ec7 th\u1ed1ng. C\u00e1c chi ti\u1ebft c\u1ee7a tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, ngo\u1ea1i tr\u1eeb t\u00ean duy nh\u1ea5t c\u1ee7a n\u00f3, kh\u00f4ng \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n m\u1ed9t c\u00e1ch tr\u1ef1c quan trong bi\u1ec3u \u0111\u1ed3; C\u00e1c chi ti\u1ebft n\u00e0y \u0111\u01b0\u1ee3c cung c\u1ea5p trong m\u00f4 t\u1ea3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/p>\n

C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c kh\u1edfi x\u01b0\u1edbng b\u1edfi c\u00e1c di\u1ec5n vi\u00ean ch\u00ednh. H\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 c\u00e1c b\u00ean tham gia ph\u1ee5 tr\u1ee3 kh\u00e1c th\u00f4ng qua m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/p>\n

M\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u00e0 c\u00e1c di\u1ec5n vi\u00ean \u0111\u1ea1i di\u1ec7n cho giao ti\u1ebfp hai chi\u1ec1u. Do \u0111\u00f3, \u0111\u1ed1i v\u1edbi m\u1ed7i tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c kh\u1edfi x\u01b0\u1edbng b\u1edfi di\u1ec5n vi\u00ean ch\u00ednh, di\u1ec5n vi\u00ean \u0111\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i. T\u01b0\u01a1ng t\u1ef1, \u0111\u1ed1i v\u1edbi m\u1ed7i m\u1ed1i quan h\u1ec7 gi\u1eefa di\u1ec5n vi\u00ean ph\u1ee5 v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, giao ti\u1ebfp b\u1eaft \u0111\u1ea7u t\u1eeb tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, v\u00e0 di\u1ec5n vi\u00ean ph\u1ee5 n\u00ean ph\u1ea3n h\u1ed3i l\u1ea1i s\u1ef1 kh\u1edfi x\u01b0\u1edbng.<\/p>\n

Ranh Gi\u1edbi H\u1ec7 Th\u1ed1ng<\/h3>\n

Ranh gi\u1edbi h\u1ec7 th\u1ed1ng x\u00e1c \u0111\u1ecbnh h\u1ec7 th\u1ed1ng quan t\u00e2m li\u00ean quan \u0111\u1ebfn th\u1ebf gi\u1edbi xung quanh n\u00f3.<\/p>\n

V\u00ed D\u1ee5 Bi\u1ec3u \u0110\u1ed3 Tr\u01b0\u1eddng H\u1ee3p S\u1eed D\u1ee5ng: H\u1ec7 Th\u1ed1ng \u0110\u1eb7t V\u00e9 M\u00e1y Bay<\/h3>\n

C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng x\u00e1c \u0111\u1ecbnh c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c di\u1ec5n vi\u00ean b\u00ean ngo\u00e0i v\u00e0 h\u1ec7 th\u1ed1ng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c m\u1ee5c ti\u00eau c\u1ee5 th\u1ec3. M\u1ed9t bi\u1ec3u \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ch\u1ee9a b\u1ed1n th\u00e0nh ph\u1ea7n ch\u00ednh<\/p>\n

Trong bi\u1ec3u \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u1eb7t v\u00e9, h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c \u0111\u1ea1i di\u1ec7n b\u1edfi c\u00e1c h\u1ed9p ch\u1ee9a nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00e1c nhau. Di\u1ec5n vi\u00ean ch\u00ednh l\u00e0 kh\u00e1ch h\u00e0ng v\u00e0 di\u1ec5n vi\u00ean ph\u1ee5 l\u00e0 qu\u1ea3n tr\u1ecb vi\u00ean. Kh\u00e1ch h\u00e0ng kh\u1edfi x\u01b0\u1edbng c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1eb7t v\u00e9, duy\u1ec7t v\u00e0 h\u1ee7y chuy\u1ebfn bay, trong khi qu\u1ea3n tr\u1ecb vi\u00ean kh\u1edfi x\u01b0\u1edbng c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u1eadp nh\u1eadt h\u1ed3 s\u01a1 chuy\u1ebfn bay, nh\u01b0ng \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t di\u1ec5n vi\u00ean ph\u1ee5 trong tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng h\u1ee7y chuy\u1ebfn bay, v\u00ec c\u00f4 \u1ea5y ch\u1ec9 gi\u00fap ho\u00e0n th\u00e0nh c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng do kh\u00e1ch h\u00e0ng kh\u1edfi x\u01b0\u1edbng.<\/p>\n

<\/p>\n

Ch\u1ec9nh s\u1eeda v\u00ed d\u1ee5 Bi\u1ec3u \u0110\u1ed3 Tr\u01b0\u1eddng H\u1ee3p S\u1eed D\u1ee5ng UML n\u00e0y<\/a><\/p>\n

C\u1ea5u Tr\u00fac C\u00e1c Tr\u01b0\u1eddng H\u1ee3p S\u1eed D\u1ee5ng<\/h3>\n

Theo l\u0129nh v\u1ef1c \u1ee9ng d\u1ee5ng v\u00e0 s\u1ef1 l\u1ef1a ch\u1ecdn c\u1ee7a nh\u00e0 thi\u1ebft k\u1ebf, m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i th\u00f4ng qua c\u00e1c m\u1ed1i quan h\u1ec7 < < bao g\u1ed3m > > ho\u1eb7c < < m\u1edf r\u1ed9ng > >.<\/p>\n

Li\u00ean K\u1ebft Hi\u1ec7p H\u1ed9i<\/strong>\u0111\u1ea1i di\u1ec7n cho m\u1ed9t giao ti\u1ebfp hai chi\u1ec1u gi\u1eefa m\u1ed9t di\u1ec5n vi\u00ean v\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, v\u00e0 do \u0111\u00f3 l\u00e0 m\u1ed9t m\u1ed1i quan h\u1ec7 nh\u1ecb ph\u00e2n. V\u00ec \u0111\u00e2y l\u00e0 m\u1ed9t giao ti\u1ebfp hai chi\u1ec1u, \u0111\u1ed1i v\u1edbi m\u1ed7i tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c kh\u1edfi x\u01b0\u1edbng b\u1edfi m\u1ed9t di\u1ec5n vi\u00ean ch\u00ednh, di\u1ec5n vi\u00ean \u0111\u00f3 ph\u1ea3i nh\u1eadn \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i t\u1eeb tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/p>\n

\"Customer<\/p>\n

T\u01b0\u01a1ng t\u1ef1, \u0111\u1ed1i v\u1edbi m\u1ed7i giao ti\u1ebfp gi\u1eefa m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng v\u00e0 m\u1ed9t di\u1ec5n vi\u00ean ph\u1ee5 (\u0111\u01b0\u1ee3c kh\u1edfi x\u01b0\u1edbng b\u1edfi tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng), di\u1ec5n vi\u00ean ph\u1ee5 ph\u1ea3i g\u1eedi ph\u1ea3n h\u1ed3i tr\u1edf l\u1ea1i cho tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/p>\n

Kh\u00e1i Qu\u00e1t H\u00f3a<\/h4>\n

Kh\u00e1i qu\u00e1t h\u00f3a \u0111\u1ea1i di\u1ec7n cho m\u1ed1i quan h\u1ec7 gi\u1eefa<\/p>\n