![\"Online](\"https:\/\/online.visual-paradigm.com\/images\/features\/erd-tool\/01-online-erd-tool.png\"\/)
<\/p>\nL\u00e0 m\u1ed9t ng\u01b0\u1eddi qu\u1ea3n l\u00fd s\u1ea3n ph\u1ea9m th\u01b0\u1eddng xuy\u00ean h\u1ee3p t\u00e1c v\u1edbi c\u00e1c \u0111\u1ed9i k\u1ef9 thu\u1eadt trong c\u00e1c quy\u1ebft \u0111\u1ecbnh v\u1ec1 ki\u1ebfn tr\u00fac d\u1eef li\u1ec7u, t\u00f4i \u0111\u00e3 th\u1eed nghi\u1ec7m h\u00e0ng ch\u1ee5c c\u00f4ng c\u1ee5 v\u1ebd s\u01a1 \u0111\u1ed3 trong nhi\u1ec1u n\u0103m qua. Khi g\u1ea7n \u0111\u00e2y t\u00f4i c\u1ea7n nhanh ch\u00f3ng t\u1ea1o b\u1ea3n m\u1eabu m\u00f4 h\u00ecnh quan h\u1ec7 th\u1ef1c th\u1ec3 cho m\u1ed9t t\u00e0i li\u1ec7u \u0111\u1eb7c t\u1ea3 t\u00ednh n\u0103ng m\u1edbi, t\u00f4i \u0111\u00e3 quy\u1ebft \u0111\u1ecbnh th\u1eed nghi\u00eam t\u00fac c\u00f4ng c\u1ee5 ERD Tr\u1ef1c tuy\u1ebfn c\u1ee7a Visual Paradigm. \u0110i\u1ec1u b\u1eaft \u0111\u1ea7u nh\u01b0 m\u1ed9t cu\u1ed9c kh\u00e1m ph\u00e1 \u0111\u01a1n gi\u1ea3n \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng tr\u1ea3i nghi\u1ec7m thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u th\u00fa v\u1ecb nh\u1ea5t m\u00e0 t\u00f4i t\u1eebng c\u00f3. Trong b\u00e0i \u0111\u00e1nh gi\u00e1 n\u00e0y, t\u00f4i s\u1ebd chia s\u1ebb tr\u1ea3i nghi\u1ec7m th\u1ef1c t\u1ebf, tr\u1ef1c ti\u1ebfp c\u1ee7a m\u00ecnh v\u1edbi n\u1ec1n t\u1ea3ng n\u00e0y\u2014\u0111i\u1ec1u g\u00ec ho\u1ea1t \u0111\u1ed9ng t\u1ed1t, \u0111i\u1ec1u g\u00ec khi\u1ebfn t\u00f4i b\u1ea5t ng\u1edd, v\u00e0 li\u1ec7u n\u00f3 c\u00f3 x\u1ee9ng \u0111\u00e1ng \u0111\u01b0\u1ee3c th\u00eam v\u00e0o c\u00f4ng c\u1ee5 c\u1ee7a b\u1ea1n hay kh\u00f4ng. L\u01b0u \u00fd nh\u1ecf: T\u00f4i th\u1ef1c s\u1ef1 \u1ea5n t\u01b0\u1ee3ng.<\/p>\n
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Khi t\u00f4i l\u1ea7n \u0111\u1ea7u truy c\u1eadp v\u00e0o\u00a0N\u1ec1n t\u1ea3ng Online c\u1ee7a Visual Paradigm<\/a>\u00a0n\u1ec1n t\u1ea3ng, t\u00f4i \u0111\u00e1nh gi\u00e1 cao vi\u1ec7c t\u00f4i kh\u00f4ng ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi quy tr\u00ecnh gi\u1edbi thi\u1ec7u ph\u1ee9c t\u1ea1p. Giao di\u1ec7n c\u1ea3m gi\u00e1c tr\u1ef1c quan ngay t\u1eeb \u0111\u1ea7u. L\u00e0 ng\u01b0\u1eddi coi tr\u1ecdng hi\u1ec7u qu\u1ea3, t\u00f4i r\u1ea5t th\u00edch khi c\u00f3 th\u1ec3 b\u1eaft \u0111\u1ea7u ngay l\u1eadp t\u1ee9c t\u1ea1o s\u01a1 \u0111\u1ed3 ER m\u00e0 kh\u00f4ng c\u1ea7n xem h\u01b0\u1edbng d\u1eabn hay \u0111\u1ecdc t\u00e0i li\u1ec7u d\u00e0i d\u00f2ng. B\u1ea3ng v\u1ebd s\u1ea1ch s\u1ebd, thanh c\u00f4ng c\u1ee5 \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp h\u1ee3p l\u00fd, v\u00e0 ch\u1ee9c n\u0103ng k\u00e9o th\u1ea3 ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c nh\u01b0 mong \u0111\u1ee3i c\u1ee7a t\u00f4i. \u0110\u1ed1i v\u1edbi c\u00e1c \u0111\u1ed9i c\u1ea7n nhanh ch\u00f3ng \u0111\u01b0a th\u00e0nh vi\u00ean m\u1edbi v\u00e0o l\u00e0m vi\u1ec7c, \u0111\u00e2y l\u00e0 m\u1ed9t l\u1ee3i th\u1ebf l\u1edbn.<\/p>\n M\u1ed9t \u0111i\u1ec1u khi\u1ebfn t\u00f4i b\u1ef1c b\u1ed9i v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 v\u1ebd s\u01a1 \u0111\u1ed3 kh\u00e1c l\u00e0 lu\u00f4n ph\u1ea3i l\u1ee5c t\u00ecm bi\u1ec3u t\u01b0\u1ee3ng ho\u1eb7c b\u1ed9 n\u1ed1i ph\u00f9 h\u1ee3p. V\u1edbi c\u00f4ng c\u1ee5 c\u1ee7a Visual Paradigm, m\u1ecdi th\u1ee9 t\u00f4i c\u1ea7n cho m\u00f4 h\u00ecnh h\u00f3a ER \u0111\u1ec1u s\u1eb5n s\u00e0ng ngay l\u1eadp t\u1ee9c. D\u00f9 t\u00f4i \u0111ang l\u00e0m m\u00f4 h\u00ecnh kh\u00e1i ni\u1ec7m c\u1ea5p cao hay \u0111i s\u00e2u v\u00e0o chi ti\u1ebft s\u01a1 \u0111\u1ed3 v\u1eadt l\u00fd, th\u01b0 vi\u1ec7n c\u00e1c th\u1ef1c th\u1ec3, thu\u1ed9c t\u00ednh, m\u1ed1i quan h\u1ec7 v\u00e0 k\u00fd hi\u1ec7u b\u1ed9i s\u1ed1 \u0111\u1ec1u r\u1ea5t to\u00e0n di\u1ec7n.<\/p>\n Theo kinh nghi\u1ec7m c\u1ee7a t\u00f4i, s\u1ef1 to\u00e0n di\u1ec7n n\u00e0y \u0111\u00e3 ti\u1ebft ki\u1ec7m cho t\u00f4i r\u1ea5t nhi\u1ec1u th\u1eddi gian. T\u00f4i kh\u00f4ng c\u1ea7n ph\u1ea3i chuy\u1ec3n \u0111\u1ed5i gi\u1eefa c\u00e1c c\u00f4ng c\u1ee5 hay v\u1ebd th\u1ee7 c\u00f4ng c\u00e1c gi\u1ea3i ph\u00e1p thay th\u1ebf cho c\u00e1c bi\u1ec3u t\u01b0\u1ee3ng thi\u1ebfu v\u1eafng. \u0110\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 ai \u0111ang t\u1ea1o m\u00f4 h\u00ecnh d\u1eef li\u1ec7u kh\u00e1i ni\u1ec7m, logic hay v\u1eadt l\u00fd, vi\u1ec7c c\u00f3 b\u1ed9 bi\u1ec3u t\u01b0\u1ee3ng t\u00edch h\u1ee3p to\u00e0n di\u1ec7n n\u00e0y th\u1ef1c s\u1ef1 l\u00e0 m\u1ed9t \u0111\u00f2n b\u1ea9y t\u0103ng n\u0103ng su\u1ea5t.<\/p>\n \u0110i\u1ec1u th\u1ef1c s\u1ef1 n\u1ed5i b\u1eadt v\u1edbi t\u00f4i l\u00e0 c\u00e1ch c\u00f4ng c\u1ee5 n\u00e0y th\u00edch nghi v\u1edbi c\u00e1c giai \u0111o\u1ea1n kh\u00e1c nhau trong quy tr\u00ecnh thi\u1ebft k\u1ebf c\u1ee7a t\u00f4i. V\u00e0o \u0111\u1ea7u m\u1ed9t d\u1ef1 \u00e1n, t\u00f4i d\u00f9ng n\u00f3 \u0111\u1ec3 t\u1ea1o nhanh c\u00e1c b\u1ea3n ph\u00e1c th\u1ea3o kh\u00e1i ni\u1ec7m v\u1edbi c\u00e1c b\u00ean li\u00ean quan. Sau \u0111\u00f3, t\u00f4i tinh ch\u1ec9nh nh\u1eefng b\u1ea3n ph\u00e1c th\u1ea3o n\u00e0y th\u00e0nh m\u00f4 h\u00ecnh logic \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 k\u1ef9 thu\u1eadt, v\u00e0 cu\u1ed1i c\u00f9ng xu\u1ea5t ra m\u00f4 h\u00ecnh v\u1eadt l\u00fd \u0111\u1ec3 b\u00e0n giao cho nh\u00e0 ph\u00e1t tri\u1ec3n.<\/p>\n C\u00f4ng c\u1ee5\u00a0ERD Tr\u1ef1c tuy\u1ebfn<\/a>\u00a0kh\u00f4ng \u00e9p bu\u1ed9c t\u00f4i ph\u1ea3i tu\u00e2n theo m\u1ed9t m\u00f4 h\u00ecnh h\u00f3a duy nh\u1ea5t. Thay v\u00e0o \u0111\u00f3, n\u00f3 linh ho\u1ea1t h\u1ed7 tr\u1ee3 s\u1ef1 ph\u00e1t tri\u1ec3n trong quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ee7a t\u00f4i. T\u00ednh linh ho\u1ea1t n\u00e0y \u0111\u1eb7c bi\u1ec7t c\u00f3 gi\u00e1 tr\u1ecb \u0111\u1ed1i v\u1edbi c\u00e1c chuy\u00ean gia s\u1ea3n ph\u1ea9m c\u1ea7n giao ti\u1ebfp gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng k\u1ef9 thu\u1eadt v\u00e0 phi k\u1ef9 thu\u1eadt.<\/p>\n L\u00e0 ng\u01b0\u1eddi t\u1eebng g\u1eb7p ph\u1ea3i t\u00ecnh tr\u1ea1ng ‘b\u1ea3n v\u1ebd tr\u1ed1ng’, t\u00f4i th\u1ea5y th\u01b0 vi\u1ec7n v\u00ed d\u1ee5 t\u00edch h\u1ee3p trong c\u00f4ng c\u1ee5 n\u00e0y c\u1ef1c k\u1ef3 h\u1eefu \u00edch. Thay v\u00ec b\u1eaft \u0111\u1ea7u t\u1eeb \u0111\u1ea7u, t\u00f4i c\u00f3 th\u1ec3 l\u01b0\u1edbt qua c\u00e1c s\u01a1 \u0111\u1ed3 ER \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf chuy\u00ean nghi\u1ec7p \u0111\u1ec3 l\u1ea5y c\u1ea3m h\u1ee9ng.<\/p>\n C\u1ea7n m\u1ed9t ch\u00fat c\u1ea3m h\u1ee9ng? Ch\u00fang t\u00f4i \u0111\u00e3 t\u1ed5ng h\u1ee3p m\u1ed9t s\u1ed1 v\u00ed d\u1ee5 ERD d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 gi\u00fap b\u1ea1n b\u1eaft \u0111\u1ea7u. Nh\u1ea5p v\u00e0o m\u1ed9t s\u01a1 \u0111\u1ed3 ER \u0111\u1ec3 xem, ho\u1eb7c nh\u1ea5p v\u00e0o n\u00fat ch\u1ec9nh s\u1eeda \u0111\u1ec3 b\u1eaft \u0111\u1ea7u ch\u1ec9nh s\u1eeda.<\/p>\n T\u00f4i \u0111\u1eb7c bi\u1ec7t \u0111\u00e1nh gi\u00e1 cao vi\u1ec7c c\u00f3 th\u1ec3 sao ch\u00e9p m\u1ed9t v\u00ed d\u1ee5 v\u00e0 t\u00f9y ch\u1ec9nh theo nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a m\u00ecnh. T\u00ednh n\u0103ng n\u00e0y \u0111\u00e3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 th\u1eddi gian thi\u1ebft l\u1eadp c\u1ee7a t\u00f4i v\u00e0 gi\u00fap t\u00f4i duy tr\u00ec c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t trong m\u00f4 h\u00ecnh h\u00f3a m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i t\u1ef1 s\u00e1ng t\u1ea1o l\u1ea1i t\u1eeb \u0111\u1ea7u.<\/p>\n Vi\u1ec7c ch\u1ec9nh s\u1eeda s\u01a1 \u0111\u1ed3 l\u00e0 \u0111i\u1ec3m y\u1ebfu c\u1ee7a nhi\u1ec1u c\u00f4ng c\u1ee5, nh\u01b0ng Visual Paradigm \u0111\u00e3 l\u00e0m r\u1ea5t t\u1ed1t kh\u00eda c\u1ea1nh n\u00e0y. Giao di\u1ec7n k\u00e9o th\u1ea3 c\u1ea3m gi\u00e1c ph\u1ea3n h\u1ed3i t\u1ed1t, c\u00e1c k\u1ebft n\u1ed1i t\u1ef1 \u0111\u1ed9ng kh\u1edbp th\u00f4ng minh, v\u00e0 vi\u1ec7c di chuy\u1ec3n c\u00e1c th\u00e0nh ph\u1ea7n kh\u00f4ng l\u00e0m \u0111\u1ee9t m\u1ed1i quan h\u1ec7. Khi t\u00f4i c\u1ea7n chia s\u1ebb b\u1ea3n nh\u00e1p v\u1edbi tr\u01b0\u1edfng nh\u00f3m k\u1ef9 thu\u1eadt c\u1ee7a m\u00ecnh, c\u00e1c t\u00ednh n\u0103ng h\u1ee3p t\u00e1c th\u1eddi gian th\u1ef1c ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru.<\/p>\n \u0110\u1ed1i v\u1edbi c\u00e1c \u0111\u1ed9i s\u1ea3n ph\u1ea9m th\u01b0\u1eddng xuy\u00ean c\u1eadp nh\u1eadt nhanh ch\u00f3ng c\u00e1c m\u00f4 h\u00ecnh d\u1eef li\u1ec7u, tr\u1ea3i nghi\u1ec7m ch\u1ec9nh s\u1eeda linh ho\u1ea1t n\u00e0y l\u00e0 v\u00f4 gi\u00e1. T\u00f4i d\u00e0nh \u00edt th\u1eddi gian h\u01a1n \u0111\u1ec3 chi\u1ebfn \u0111\u1ea5u v\u1edbi c\u00f4ng c\u1ee5 v\u00e0 nhi\u1ec1u th\u1eddi gian h\u01a1n \u0111\u1ec3 tinh ch\u1ec9nh logic thi\u1ebft k\u1ebf th\u1ef1c s\u1ef1.<\/p>\n Thi\u1ebft k\u1ebf b\u1edfi\u00a0@Gugu Dev<\/a><\/p>\n V\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ERD \u2013 C\u01a1 s\u1edf d\u1eef li\u1ec7u s\u00e1ch<\/a><\/p>\n S\u01a1 \u0111\u1ed3 ERD \u0111\u01a1n gi\u1ea3n v\u1ec1 tr\u01b0\u1eddng h\u1ecdc v\u00e0 sinh vi\u00ean<\/a><\/p>\n V\u00ed d\u1ee5 ERD: H\u1ec7 th\u1ed1ng theo d\u00f5i s\u1ea3n xu\u1ea5t<\/a><\/p>\n<\/li>\n<\/ul>\n V\u00ed d\u1ee5 ERD: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd b\u1ea3o hi\u1ec3m \u00f4 t\u00f4<\/a><\/p>\n<\/li>\n V\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ER: Th\u1ed1ng k\u00ea \u0111\u1ed9i y\u00eau th\u00edch<\/a><\/p>\n<\/li>\n<\/ul>\n V\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ER: Gi\u1ea3i \u0111\u1ea5u kh\u00fac c\u00f4n c\u1ea7u<\/a><\/p>\n V\u00ed d\u1ee5 ERD: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd b\u1ec7nh vi\u1ec7n<\/a><\/p>\n V\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ER: H\u1ec7 th\u1ed1ng cho thu\u00ea video<\/a><\/p>\n \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o b\u00e0i \u0111\u00e1nh gi\u00e1 \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng, t\u00f4i s\u1ebd n\u00eau ra m\u1ed9t v\u00e0i \u0111i\u1ec3m c\u1ea7n c\u00e2n nh\u1eafc. M\u1eb7c d\u00f9 g\u00f3i mi\u1ec5n ph\u00ed r\u1ea5t r\u1ed9ng r\u00e3i cho ng\u01b0\u1eddi d\u00f9ng c\u00e1 nh\u00e2n, nh\u01b0ng c\u00e1c nh\u00f3m c\u1ea7n c\u00e1c t\u00ednh n\u0103ng h\u1ee3p t\u00e1c n\u00e2ng cao ho\u1eb7c t\u00edch h\u1ee3p doanh nghi\u1ec7p n\u00ean xem x\u00e9t c\u00e1c g\u00f3i gi\u00e1 c\u1ea3. Ngo\u00e0i ra, m\u1eb7c d\u00f9 c\u00f4ng c\u1ee5 n\u00e0y xu\u1ea5t s\u1eafc trong m\u00f4 h\u00ecnh h\u00f3a ER, ng\u01b0\u1eddi d\u00f9ng c\u1ea7n m\u00f4 h\u00ecnh h\u00f3a UML ho\u1eb7c quy tr\u00ecnh kinh doanh ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 mu\u1ed1n t\u00ecm hi\u1ec3u th\u00eam b\u1ed9 c\u00f4ng c\u1ee5 r\u1ed9ng l\u1edbn h\u01a1n c\u1ee7a Visual Paradigm. Nh\u1eefng \u0111i\u1ec1u n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 \u0111i\u1ec3m y\u1ebfu th\u1ef1c s\u1ef1 \u2014 ch\u1ec9 l\u00e0 b\u1ed1i c\u1ea3nh \u0111\u1ec3 \u0111\u1eb7t k\u1ef3 v\u1ecdng ph\u00f9 h\u1ee3p.<\/p>\n Sau v\u00e0i tu\u1ea7n s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 ERD tr\u1ef1c tuy\u1ebfn c\u1ee7a Visual Paradigm tr\u00ean nhi\u1ec1u d\u1ef1 \u00e1n, t\u00f4i c\u00f3 th\u1ec3 t\u1ef1 tin n\u00f3i r\u1eb1ng n\u00f3 \u0111\u00e3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u c\u1ee7a t\u00f4i cho c\u00e1c nhi\u1ec7m v\u1ee5 thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u. S\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa giao di\u1ec7n tr\u1ef1c quan, th\u01b0 vi\u1ec7n k\u00fd hi\u1ec7u to\u00e0n di\u1ec7n, c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u00e0 tr\u1ea3i nghi\u1ec7m ch\u1ec9nh s\u1eeda m\u01b0\u1ee3t m\u00e0 \u0111\u00e3 gi\u1ea3i quy\u1ebft nh\u1eefng \u0111i\u1ec3m \u0111au th\u1ef1c s\u1ef1 m\u00e0 t\u00f4i g\u1eb7p ph\u1ea3i khi l\u00e0 m\u1ed9t chuy\u00ean gia s\u1ea3n ph\u1ea9m l\u00e0m vi\u1ec7c v\u1edbi c\u00e1c m\u00f4 h\u00ecnh d\u1eef li\u1ec7u.<\/p>\n N\u1ebfu b\u1ea1n \u0111ang \u0111\u00e1nh gi\u00e1 c\u00e1c c\u00f4ng c\u1ee5 ERD, t\u00f4i khuy\u1ebfn kh\u00edch b\u1ea1n th\u1eed d\u00f9ng n\u00f3 v\u1edbi m\u1ed9t d\u1ef1 \u00e1n nh\u1ecf tr\u01b0\u1edbc. Sao ch\u00e9p m\u1ed9t trong c\u00e1c s\u01a1 \u0111\u1ed3 v\u00ed d\u1ee5, t\u00f9y ch\u1ec9nh theo nhu c\u1ea7u c\u1ee7a b\u1ea1n v\u00e0 xem quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ea3m gi\u00e1c th\u1ebf n\u00e0o. D\u1ef1a tr\u00ean kinh nghi\u1ec7m c\u1ee7a t\u00f4i, b\u1ea1n s\u1ebd d\u1ec5 d\u00e0ng nh\u1eadn th\u1ea5y \u2014 nh\u01b0 t\u00f4i \u0111\u00e3 t\u1eebng \u2014 r\u1eb1ng c\u00f4ng c\u1ee5 n\u00e0y lo\u1ea1i b\u1ecf s\u1ef1 c\u1ea3n tr\u1edf trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf v\u00e0 gi\u00fap b\u1ea1n t\u1eadp trung v\u00e0o \u0111i\u1ec1u quan tr\u1ecdng nh\u1ea5t: t\u1ea1o ra c\u00e1c m\u00f4 h\u00ecnh d\u1eef li\u1ec7u r\u00f5 r\u00e0ng, hi\u1ec7u qu\u1ea3 nh\u1eb1m th\u00fac \u0111\u1ea9y c\u00e1c quy\u1ebft \u0111\u1ecbnh s\u1ea3n ph\u1ea9m t\u1ed1t h\u01a1n.<\/p>\n","protected":false},"excerpt":{"rendered":" Ph\u1ea7n M\u1edf \u0110\u1ea7u M\u1edbi: G\u00f3c Nh\u00ecn T\u1eeb Ng\u01b0\u1eddi Qu\u1ea3n L\u00fd S\u1ea3n Ph\u1ea9m V\u1ec1 C\u00f4ng C\u1ee5 M\u00f4 H\u00ecnh H\u00f3a C\u01a1 S\u1edf<\/p>\n","protected":false},"author":3482,"featured_media":11119,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","fifu_image_url":"https:\/\/online.visual-paradigm.com\/images\/features\/erd-tool\/01-online-erd-tool.png","fifu_image_alt":"","footnotes":""},"categories":[149],"tags":[],"class_list":["post-11118","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-database-design"],"yoast_head":"\nT\u1ea5t c\u1ea3 c\u00e1c bi\u1ec3u t\u01b0\u1ee3ng v\u00e0 b\u1ed9 n\u1ed1i b\u1ea1n c\u1ea7n: Kh\u00f4ng C\u00f2n Ph\u1ea3i T\u00ecm Ki\u1ebfm Th\u00e0nh Ph\u1ea7n N\u1eefa<\/h2>\n
T\u00ednh Linh Ho\u1ea1t Trong Vi\u1ec7c T\u1ea1o M\u00f4 H\u00ecnh: M\u1ed9t C\u00f4ng C\u1ee5, Nhi\u1ec1u Giai \u0110o\u1ea1n<\/h2>\n
Ngu\u1ed3n C\u1ea3m H\u1ee9ng D\u01b0\u1edbi Ng\u00f3n Tay: H\u1ecdc T\u1eeb C\u00e1c V\u00ed D\u1ee5 Th\u1ef1c T\u1ebf<\/h2>\n
![\"ERD](\"https:\/\/online.visual-paradigm.com\/repository\/images\/7eb24322-267a-4239-8e0c-b8339b1cd46e.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 ERD \u2013 M\u00e1y ATM<\/a><\/p>\n![\"ERD](\"https:\/\/online.visual-paradigm.com\/repository\/images\/b15763a9-8ed2-4886-a7ed-128042f21447.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 ERD \u2013 C\u01a1 s\u1edf d\u1eef li\u1ec7u S\u00e1ch<\/a><\/p>\n![\"Simple](\"https:\/\/online.visual-paradigm.com\/repository\/images\/aae8b55e-a1c7-4462-9ca8-07020f00ba04.png\"\/)
<\/a>
\nS\u01a1 \u0111\u1ed3 ERD \u0110\u01a1n Gi\u1ea3n v\u1ec1 Tr\u01b0\u1eddng H\u1ecdc v\u00e0 H\u1ecdc Sinh<\/a><\/p>\n![\"Simple](\"https:\/\/online.visual-paradigm.com\/repository\/images\/64ea6b87-f3bf-4b51-a810-329c61a90058.png\"\/)
<\/a>
\nS\u01a1 \u0111\u1ed3 ERD \u0110\u01a1n Gi\u1ea3n v\u1ec1 Thu\u00ea Phim<\/a><\/p>\n![\"Data](\"https:\/\/online.visual-paradigm.com\/repository\/images\/d0be1147-ade2-438f-bb7c-5ea7962dd070.png\"\/)
<\/a>
\nS\u01a1 \u0111\u1ed3 Quan H\u1ec7 Th\u1ef1c Th\u1ec3 v\u1ec1 Tr\u01b0\u1eddng D\u1eef Li\u1ec7u<\/a><\/p>\n![\"Movie](\"https:\/\/online.visual-paradigm.com\/repository\/images\/e47a44a7-239e-4422-ab83-fe48e4a8dfc9.png\"\/)
<\/a>
\nS\u01a1 \u0111\u1ed3 Quan H\u1ec7 Th\u1ef1c Th\u1ec3 v\u1ec1 H\u00e3ng Phim<\/a><\/p>\n![\"Order](\"https:\/\/online.visual-paradigm.com\/repository\/images\/0cd85499-56b1-4676-b624-8dbaa04add51.png\"\/)
<\/a>
\nS\u01a1 \u0111\u1ed3 Quan H\u1ec7 Th\u1ef1c Th\u1ec3 v\u1ec1 \u0110\u01a1n H\u00e0ng Mua<\/a><\/p>\n![\"Event](\"https:\/\/online.visual-paradigm.com\/repository\/images\/e8b7ad07-ce2c-4d13-b2c1-b015735a376f.png\"\/)
<\/a>
\nS\u01a1 \u0111\u1ed3 Quan H\u1ec7 Th\u1ef1c Th\u1ec3 v\u1ec1 Ng\u01b0\u1eddi T\u1ea1o S\u1ef1 Ki\u1ec7n<\/a><\/p>\n![\"ERD](\"https:\/\/online.visual-paradigm.com\/repository\/images\/ef9429ed-afd7-408c-8f38-3c7c0a606281.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 ERD: H\u1ec7 th\u1ed1ng Theo D\u00f5i S\u1ea3n Xu\u1ea5t<\/a><\/p>\n![\"ERD](\"https:\/\/online.visual-paradigm.com\/repository\/images\/e2426e05-354c-44b0-889c-55e8d4d71fc7.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 ERD: H\u1ec7 th\u1ed1ng Qu\u1ea3n L\u00fd B\u1ea3o Hi\u1ec3m \u00d4 T\u00f4<\/a><\/p>\n![\"Entity](\"https:\/\/online.visual-paradigm.com\/repository\/images\/cc79817c-8d58-46ce-bf8e-b36a6a39d777.png\"\/)
<\/a>
\nS\u01a1 \u0111\u1ed3 Quan H\u1ec7 Th\u1ef1c Th\u1ec3: H\u1ec7 th\u1ed1ng UPS<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/c144755c-a980-4d01-8794-e53bf70b0261.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 S\u01a1 \u0111\u1ed3 ER: Th\u1ed1ng K\u00ea \u0110\u1ed9i \u01afa Th\u00edch<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/b8f5f178-4ad8-4d8f-9fc1-9dcb5fe51c6e.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ER: Gi\u1ea3i b\u00f3ng \u0111\u00e1 hockey<\/a><\/p>\n![\"ERD](\"https:\/\/online.visual-paradigm.com\/repository\/images\/a5f46368-38e9-4d47-9580-0c4d68c0a629.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ERD: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd b\u1ec7nh vi\u1ec7n<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/a47c1261-7817-45e8-8bd1-a098d6538165.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ER: H\u1ec7 th\u1ed1ng cho thu\u00ea video<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/9a6d0933-2c4c-4bbd-8b57-b3a73fbd02a1.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 m\u00f4 h\u00ecnh ER: H\u1ee3p t\u00e1c v\u00e0 trao \u0111\u1ed5i nghi\u00ean c\u1ee9u<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/955408ad-0f82-40fb-98e5-869339515f22.png\"\/)
<\/a>
\nM\u00f4 h\u00ecnh ER: H\u1ec7 th\u1ed1ng l\u1eadp l\u1ecbch thi c\u1eed<\/a><\/p>\n![\"Entity](\"https:\/\/online.visual-paradigm.com\/repository\/images\/8d0b0c2d-1963-4997-b95a-aca38976851a.png\"\/)
<\/a>
\nS\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3: H\u1ec7 th\u1ed1ng cho thu\u00ea phim<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/8c19cb11-48a3-4ebf-a914-08efc3484567.png\"\/)
<\/a>
\nM\u00f4 h\u00ecnh ER: \u0110i\u1ec3m sinh vi\u00ean \u2013 M\u1ed1i quan h\u1ec7 tam ph\u00e2n<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/73785425-47d6-4273-8b89-b2b9622af30f.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 m\u00f4 h\u00ecnh ER: \u0110i\u1ec3m sinh vi\u00ean \u2013 M\u1ed1i quan h\u1ec7 nh\u1ecb ph\u00e2n<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/7208c819-f8a3-4100-b699-de1a7a13f0c2.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ER: B\u1ed9 s\u01b0u t\u1eadp \u1ea3nh tr\u1ef1c tuy\u1ebfn<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/6bbef478-b529-4ab5-a82b-aefce1dd9aad.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ER: H\u1ec7 th\u1ed1ng \u0111\u01a1n h\u00e0ng \u0111\u01a1n gi\u1ea3n<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/5802c7dd-c92c-43a9-bf20-7b38f9fc8d52.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ER: H\u1ec7 th\u1ed1ng cho vay nh\u1ecf<\/a><\/p>\n![\"Entity](\"https:\/\/online.visual-paradigm.com\/repository\/images\/5512a900-86be-4164-906e-ad4694466206.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3: H\u1ec7 th\u1ed1ng th\u00f4ng tin qu\u1ea3n l\u00fd<\/a><\/p>\n![\"Entity](\"https:\/\/online.visual-paradigm.com\/repository\/images\/3e0bd6b5-3c97-473e-a842-e68910b01dea.png\"\/)
<\/a>
\nS\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3: C\u1eeda h\u00e0ng s\u00e1ch tr\u1ef1c tuy\u1ebfn<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/26696f29-1f6a-44a2-adb4-b03cff92e492.png\"\/)
<\/a>
\nS\u01a1 \u0111\u1ed3 ER: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd t\u1ed3n kho<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/1e70affc-0997-4f1f-80fd-1795677eeff2.png\"\/)
<\/a>
\nS\u01a1 \u0111\u1ed3 ER: H\u1ec7 th\u1ed1ng \u0111\u0103ng k\u00fd sinh vi\u00ean tr\u01b0\u1eddng \u0111\u1ea1i h\u1ecdc<\/a><\/p>\n![\"ERD](\"https:\/\/online.visual-paradigm.com\/repository\/images\/15c735c6-712c-4f52-bb40-e147d31f7297.png\"\/)
<\/a>
\nV\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ERD: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd kh\u00f3a h\u1ecdc<\/a><\/p>\n![\"Notations](\"https:\/\/online.visual-paradigm.com\/repository\/images\/0a3f8159-5075-44ce-b2dc-b0eb6c347517.png\"\/)
<\/a>
\nC\u00e1c k\u00fd hi\u1ec7u cho s\u01a1 \u0111\u1ed3 ERD truy\u1ec1n th\u1ed1ng<\/a><\/p>\nTr\u1ea3i nghi\u1ec7m ch\u1ec9nh s\u1eeda th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng: S\u1eeda \u0111\u1ed5i tr\u01a1n tru, h\u1ee3p t\u00e1c vui v\u1ebb<\/h2>\n
<\/p>\n
S\u01a1 \u0111\u1ed3 ERD kh\u00e1i ni\u1ec7m<\/h1>\n
B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 th\u00edch<\/h2>\n
![\"ERD](\"https:\/\/online.visual-paradigm.com\/repository\/images\/b15763a9-8ed2-4886-a7ed-128042f21447\/entity-relationship-diagram-design\/erd-example-book-database.png\"\/)
<\/a><\/p>\n![\"Simple](\"https:\/\/online.visual-paradigm.com\/repository\/images\/aae8b55e-a1c7-4462-9ca8-07020f00ba04\/entity-relationship-diagram-design\/simple-school-and-student-erd.png\"\/)
<\/a><\/p>\n![\"Simple](\"https:\/\/online.visual-paradigm.com\/repository\/images\/64ea6b87-f3bf-4b51-a810-329c61a90058\/entity-relationship-diagram-design\/simple-movie-rental-erd.png\"\/)
<\/a>S\u01a1 \u0111\u1ed3 ERD cho thu\u00ea phim \u0111\u01a1n gi\u1ea3n<\/a><\/p>\n![\"Data](\"https:\/\/online.visual-paradigm.com\/repository\/images\/d0be1147-ade2-438f-bb7c-5ea7962dd070\/entity-relationship-diagram-design\/data-field-entity-relationship-diagram.png\"\/)
<\/a>S\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3 tr\u01b0\u1eddng d\u1eef li\u1ec7u<\/a><\/p>\n![\"Movie](\"https:\/\/online.visual-paradigm.com\/repository\/images\/e47a44a7-239e-4422-ab83-fe48e4a8dfc9\/entity-relationship-diagram-design\/movie-studio-entity-relationship-diagram.png\"\/)
<\/a>S\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3 h\u00e3ng phim<\/a><\/p>\n![\"Order](\"https:\/\/online.visual-paradigm.com\/repository\/images\/0cd85499-56b1-4676-b624-8dbaa04add51\/entity-relationship-diagram-design\/order-purchase-entity-relationship-diagram.png\"\/)
<\/a>S\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3: \u0110\u1eb7t h\u00e0ng mua h\u00e0ng<\/a><\/p>\n![\"Event](\"https:\/\/online.visual-paradigm.com\/repository\/images\/e8b7ad07-ce2c-4d13-b2c1-b015735a376f\/entity-relationship-diagram-design\/event-creator-entity-relationship-diagram.png\"\/)
<\/a>S\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3: Ng\u01b0\u1eddi t\u1ea1o s\u1ef1 ki\u1ec7n<\/a><\/p>\n![\"ERD](\"https:\/\/online.visual-paradigm.com\/repository\/images\/ef9429ed-afd7-408c-8f38-3c7c0a606281\/entity-relationship-diagram-design\/erd-example-production-tracking-system.png\"\/)
<\/a><\/p>\n\n
![\"ERD](\"https:\/\/online.visual-paradigm.com\/repository\/images\/e2426e05-354c-44b0-889c-55e8d4d71fc7\/entity-relationship-diagram-design\/erd-example-car-insurance-management-system.png\"\/)
<\/a><\/p>\n\n
![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/c144755c-a980-4d01-8794-e53bf70b0261\/entity-relationship-diagram-design\/er-diagram-example-favorited-team-statistics.png\"\/)
<\/a><\/p>\n\n
![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/b8f5f178-4ad8-4d8f-9fc1-9dcb5fe51c6e\/entity-relationship-diagram-design\/er-diagram-example-hockey-league.png\"\/)
<\/a><\/p>\n![\"ERD](\"https:\/\/online.visual-paradigm.com\/repository\/images\/a5f46368-38e9-4d47-9580-0c4d68c0a629\/entity-relationship-diagram-design\/erd-example-hospital-management-system.png\"\/)
<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/a47c1261-7817-45e8-8bd1-a098d6538165\/entity-relationship-diagram-design\/er-diagram-example-video-rental-system.png\"\/)
<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/9a6d0933-2c4c-4bbd-8b57-b3a73fbd02a1\/entity-relationship-diagram-design\/er-model-example-research-cooperation-and-exchange.png\"\/)
<\/a>V\u00ed d\u1ee5 m\u00f4 h\u00ecnh ER: H\u1ee3p t\u00e1c v\u00e0 trao \u0111\u1ed5i nghi\u00ean c\u1ee9u<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/955408ad-0f82-40fb-98e5-869339515f22\/entity-relationship-diagram-design\/er-model-examination-scheduling-system.png\"\/)
<\/a>M\u00f4 h\u00ecnh ER: H\u1ec7 th\u1ed1ng l\u1eadp l\u1ecbch thi c\u1eed<\/a><\/p>\n![\"Entity](\"https:\/\/online.visual-paradigm.com\/repository\/images\/8d0b0c2d-1963-4997-b95a-aca38976851a\/entity-relationship-diagram-design\/entity-relationship-diagram-movie-rental-system.png\"\/)
<\/a>S\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3: H\u1ec7 th\u1ed1ng cho thu\u00ea phim<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/8c19cb11-48a3-4ebf-a914-08efc3484567\/entity-relationship-diagram-design\/er-model-student-score-ternary-relationship.png\"\/)
<\/a>M\u00f4 h\u00ecnh ER: \u0110i\u1ec3m sinh vi\u00ean \u2013 M\u1ed1i quan h\u1ec7 tam ph\u00e2n<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/73785425-47d6-4273-8b89-b2b9622af30f\/entity-relationship-diagram-design\/er-model-example-student-score-binary-relationship.png\"\/)
<\/a>V\u00ed d\u1ee5 m\u00f4 h\u00ecnh ER: \u0110i\u1ec3m sinh vi\u00ean \u2013 M\u1ed1i quan h\u1ec7 nh\u1ecb ph\u00e2n<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/7208c819-f8a3-4100-b699-de1a7a13f0c2\/entity-relationship-diagram-design\/er-diagram-example-online-photo-album.png\"\/)
<\/a>V\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ER: B\u1ed9 s\u01b0u t\u1eadp \u1ea3nh tr\u1ef1c tuy\u1ebfn<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/6bbef478-b529-4ab5-a82b-aefce1dd9aad\/entity-relationship-diagram-design\/er-diagram-example-simple-order-system.png\"\/)
<\/a>V\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ER: H\u1ec7 th\u1ed1ng \u0111\u01a1n h\u00e0ng \u0111\u01a1n gi\u1ea3n<\/a><\/p>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/5802c7dd-c92c-43a9-bf20-7b38f9fc8d52\/entity-relationship-diagram-design\/er-diagram-example-small-loan-system.png\"\/)
<\/a>V\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 ER: H\u1ec7 th\u1ed1ng cho vay nh\u1ecf<\/a><\/p>\n![\"Entity](\"https:\/\/online.visual-paradigm.com\/repository\/images\/5512a900-86be-4164-906e-ad4694466206\/entity-relationship-diagram-design\/entity-relationship-diagram-example-mis.png\"\/)
<\/a>V\u00ed d\u1ee5 s\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3: H\u1ec7 th\u1ed1ng th\u00f4ng tin qu\u1ea3n l\u00fd (MIS)<\/a><\/p>\n\n
![\"Entity](\"https:\/\/online.visual-paradigm.com\/repository\/images\/3e0bd6b5-3c97-473e-a842-e68910b01dea\/entity-relationship-diagram-design\/entity-relationship-diagram-online-bookstore.png\"\/)
<\/a>S\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3: C\u1eeda h\u00e0ng s\u00e1ch tr\u1ef1c tuy\u1ebfn<\/a><\/p>\n<\/li>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/26696f29-1f6a-44a2-adb4-b03cff92e492\/entity-relationship-diagram-design\/er-diagram-inventory-management-system.png\"\/)
<\/a>S\u01a1 \u0111\u1ed3 ER: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd t\u1ed3n kho<\/a><\/p>\n<\/li>\n<\/ul>\n![\"ER](\"https:\/\/online.visual-paradigm.com\/repository\/images\/1e70affc-0997-4f1f-80fd-1795677eeff2\/entity-relationship-diagram-design\/er-diagram-university-registration-system.png\"\/)
<\/a>S\u01a1 \u0111\u1ed3 ER: H\u1ec7 th\u1ed1ng \u0111\u0103ng k\u00fd h\u1ecdc t\u1eadp t\u1ea1i tr\u01b0\u1eddng \u0111\u1ea1i h\u1ecdc<\/a><\/p>\n![\"ERD](\"https:\/\/online.visual-paradigm.com\/repository\/images\/15c735c6-712c-4f52-bb40-e147d31f7297\/entity-relationship-diagram-design\/erd-example-course-management-system.png\"\/)
<\/a>V\u00ed d\u1ee5 ERD: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd kh\u00f3a h\u1ecdc<\/a><\/p>\n![\"Notations](\"https:\/\/online.visual-paradigm.com\/repository\/images\/0a3f8159-5075-44ce-b2dc-b0eb6c347517\/entity-relationship-diagram-design\/notations-for-traditional-erd.png\"\/)
<\/a>C\u00e1c k\u00fd hi\u1ec7u cho ERD truy\u1ec1n th\u1ed1ng<\/a><\/p>\nC\u00e1c l\u0129nh v\u1ef1c c\u1ea7n c\u00e2n nh\u1eafc<\/h2>\n
K\u1ebft lu\u1eadn m\u1edbi: L\u00fd do t\u1ea1i sao c\u00f4ng c\u1ee5 n\u00e0y \u0111\u00e3 gi\u00e0nh \u0111\u01b0\u1ee3c v\u1ecb tr\u00ed trong quy tr\u00ecnh l\u00e0m vi\u1ec7c th\u01b0\u1eddng xuy\u00ean c\u1ee7a t\u00f4i<\/h2>\n