{"id":6443,"date":"2026-02-04T20:20:45","date_gmt":"2026-02-04T12:20:45","guid":{"rendered":"https:\/\/guides.visual-paradigm.com\/vn\/balancing-data-integrity-and-performance-normalization-vs-denormalization-in-database-design\/"},"modified":"2026-02-04T20:20:45","modified_gmt":"2026-02-04T12:20:45","slug":"balancing-data-integrity-and-performance-normalization-vs-denormalization-in-database-design","status":"publish","type":"post","link":"https:\/\/guides.visual-paradigm.com\/vn\/balancing-data-integrity-and-performance-normalization-vs-denormalization-in-database-design\/","title":{"rendered":"C\u00e2n b\u1eb1ng t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t: Chu\u1ea9n h\u00f3a so v\u1edbi phi chu\u1ea9n h\u00f3a trong thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u"},"content":{"rendered":"<h2><strong>Gi\u1edbi thi\u1ec7u<\/strong><\/h2>\n<p>Trong l\u0129nh v\u1ef1c thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u, vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa chu\u1ea9n h\u00f3a v\u00e0 phi chu\u1ea9n h\u00f3a l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh then ch\u1ed1t c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n. D\u00f9 b\u1ea1n \u0111ang thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u cho m\u1ed9t n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, m\u1ed9t t\u1ed5 ch\u1ee9c t\u00e0i ch\u00ednh hay b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng n\u00e0o kh\u00e1c, vi\u1ec7c t\u00ecm ra s\u1ef1 c\u00e2n b\u1eb1ng ph\u00f9 h\u1ee3p gi\u1eefa t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t truy v\u1ea5n l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu cho th\u00e0nh c\u00f4ng. B\u00e0i vi\u1ebft n\u00e0y kh\u00e1m ph\u00e1 c\u00e1c nguy\u00ean t\u1eafc c\u1ee7a chu\u1ea9n h\u00f3a v\u00e0 phi chu\u1ea9n h\u00f3a, l\u00e0m r\u00f5 khi n\u00e0o v\u00e0 t\u1ea1i sao b\u1ea1n n\u00ean ch\u1ecdn m\u1ed7i ph\u01b0\u01a1ng ph\u00e1p. Th\u00f4ng qua c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n c\u00e2n nh\u1eafc, ch\u00fang t\u00f4i s\u1ebd d\u1eabn d\u1eaft b\u1ea1n qua b\u1ee9c tranh ph\u1ee9c t\u1ea1p c\u1ee7a thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec3 gi\u00fap b\u1ea1n \u0111\u01b0a ra nh\u1eefng quy\u1ebft \u0111\u1ecbnh th\u00f4ng th\u00e1i ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u ri\u00eang bi\u1ec7t c\u1ee7a d\u1ef1 \u00e1n.<\/p>\n<p id=\"NtvTzsn\"><img fetchpriority=\"high\" alt=\"\" class=\"alignnone size-full wp-image-2447\" decoding=\"async\" fetchpriority=\"high\" height=\"280\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/09\/img_65086cc1d7982.png\" width=\"416\"\/><\/p>\n<h2>Chu\u1ea9n h\u00f3a trong thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 g\u00ec<\/h2>\n<p>Chu\u1ea9n h\u00f3a th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u1ea5p \u0111\u1ed9 thi\u1ebft k\u1ebf logic c\u1ee7a s\u01a1 \u0111\u1ed3 Entiti-Quan h\u1ec7 (ERD), c\u1ee5 th\u1ec3 trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u. H\u00e3y c\u00f9ng ph\u00e2n t\u00edch m\u1ed1i quan h\u1ec7 gi\u1eefa chu\u1ea9n h\u00f3a v\u00e0 c\u00e1c c\u1ea5p \u0111\u1ed9 kh\u00e1c nhau c\u1ee7a ERD (kh\u00e1i ni\u1ec7m, logic v\u00e0 v\u1eadt l\u00fd):<\/p>\n<ol>\n<li><strong>C\u1ea5p \u0111\u1ed9 kh\u00e1i ni\u1ec7m:<\/strong>\n<ul>\n<li>\u1ede c\u1ea5p \u0111\u1ed9 kh\u00e1i ni\u1ec7m c\u1ee7a ERD, b\u1ea1n t\u1eadp trung v\u00e0o m\u00f4 h\u00ecnh h\u00f3a c\u1ea5p cao c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng \u0111i s\u00e2u v\u00e0o chi ti\u1ebft thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/li>\n<li>B\u1ea1n x\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3, thu\u1ed9c t\u00ednh c\u1ee7a ch\u00fang v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang, th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u nh\u01b0 s\u01a1 \u0111\u1ed3 Entiti-Quan h\u1ec7 ho\u1eb7c c\u00e1c s\u01a1 \u0111\u1ed3 c\u1ea5p cao kh\u00e1c.<\/li>\n<li>Chu\u1ea9n h\u00f3a th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y, v\u00ec n\u00f3 li\u00ean quan \u0111\u1ebfn t\u1ed5 ch\u1ee9c d\u1eef li\u1ec7u chi ti\u1ebft, v\u01b0\u1ee3t ra ngo\u00e0i ph\u1ea1m vi c\u1ee7a m\u00f4 h\u00ecnh kh\u00e1i ni\u1ec7m.<\/li>\n<\/ul>\n<\/li>\n<li><strong>C\u1ea5p \u0111\u1ed9 logic:<\/strong>\n<ul>\n<li>C\u1ea5p \u0111\u1ed9 logic c\u1ee7a ERD l\u00e0 n\u01a1i b\u1ea1n b\u1eaft \u0111\u1ea7u chuy\u1ec3n \u0111\u1ed5i c\u00e1c kh\u00e1i ni\u1ec7m c\u1ea5p cao t\u1eeb m\u00f4 h\u00ecnh kh\u00e1i ni\u1ec7m th\u00e0nh m\u1ed9t m\u00f4 h\u00ecnh d\u1eef li\u1ec7u chi ti\u1ebft h\u01a1n cho c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/li>\n<li>B\u1ea1n x\u00e1c \u0111\u1ecbnh c\u00e1c b\u1ea3ng, c\u1ed9t, ki\u1ec3u d\u1eef li\u1ec7u, kh\u00f3a ch\u00ednh, kh\u00f3a ngo\u1ea1i v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c b\u1ea3ng.<\/li>\n<li>Chu\u1ea9n h\u00f3a th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng nhi\u1ec1u nh\u1ea5t \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y. M\u1ee5c ti\u00eau c\u1ee7a chu\u1ea9n h\u00f3a l\u00e0 \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c hi\u1ec7u qu\u1ea3, t\u1ed1i thi\u1ec3u h\u00f3a s\u1ef1 tr\u00f9ng l\u1eb7p v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro x\u1ea3y ra l\u1ed7i d\u1eef li\u1ec7u (nh\u01b0 l\u1ed7i c\u1eadp nh\u1eadt ho\u1eb7c l\u1ed7i ch\u00e8n d\u1eef li\u1ec7u).<\/li>\n<\/ul>\n<\/li>\n<li><strong>C\u1ea5p \u0111\u1ed9 v\u1eadt l\u00fd:<\/strong>\n<ul>\n<li>\u1ede c\u1ea5p \u0111\u1ed9 v\u1eadt l\u00fd, b\u1ea1n t\u1eadp trung v\u00e0o vi\u1ec7c tri\u1ec3n khai th\u1ef1c t\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u tr\u00ean m\u1ed9t h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee5 th\u1ec3 (DBMS).<\/li>\n<li>C\u1ea5p \u0111\u1ed9 n\u00e0y bao g\u1ed3m c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 l\u1eadp ch\u1ec9 m\u1ee5c, t\u1ed1i \u01b0u h\u00f3a l\u01b0u tr\u1eef v\u00e0 c\u00e1c quy\u1ebft \u0111\u1ecbnh li\u00ean quan \u0111\u1ebfn ph\u1ea7n c\u1ee9ng.<\/li>\n<li>M\u1eb7c d\u00f9 c\u00e1c nguy\u00ean t\u1eafc chu\u1ea9n h\u00f3a v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y, nh\u01b0ng tr\u1ecdng t\u00e2m chuy\u1ec3n sang t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 l\u01b0u tr\u1eef. Vi\u1ec7c phi chu\u1ea9n h\u00f3a, t\u1ee9c l\u00e0 ch\u1ee7 \u00fd t\u1ea1o ra m\u1ed9t m\u1ee9c \u0111\u1ed9 tr\u00f9ng l\u1eb7p nh\u1ea5t \u0111\u1ecbnh nh\u1eb1m c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t, c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xem x\u00e9t \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>V\u1ec1 vi\u1ec7c b\u1ea1n c\u00f3 lu\u00f4n c\u1ea7n th\u1ef1c hi\u1ec7n chu\u1ea9n h\u00f3a hay kh\u00f4ng, \u0111i\u1ec1u \u0111\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c y\u00eau c\u1ea7u v\u00e0 r\u00e0ng bu\u1ed9c c\u1ee5 th\u1ec3 c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. Chu\u1ea9n h\u00f3a l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c nguy\u00ean t\u1eafc, ch\u1ee7 y\u1ebfu d\u1ef1a tr\u00ean c\u00e1c d\u1ea1ng chu\u1ea9n h\u00f3a (1NF, 2NF, 3NF, BCNF, v.v.), gi\u00fap c\u1ea5u tr\u00fac h\u00f3a d\u1eef li\u1ec7u \u0111\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng l\u1eb7p v\u00e0 l\u1ed7i. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u giao d\u1ecbch, n\u01a1i t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t.<\/p>\n<p>Tuy nhi\u00ean, trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ee7 \u00fd phi chu\u1ea9n h\u00f3a d\u1eef li\u1ec7u v\u00ec l\u00fd do hi\u1ec7u su\u1ea5t, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u kho d\u1eef li\u1ec7u ho\u1eb7c c\u01a1 s\u1edf d\u1eef li\u1ec7u b\u00e1o c\u00e1o. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m vi\u1ec7c ch\u1ea5p nh\u1eadn m\u1ed9t m\u1ee9c \u0111\u1ed9 tr\u00f9ng l\u1eb7p nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 \u0111\u1ed5i l\u1ea5y hi\u1ec7u su\u1ea5t truy v\u1ea5n nhanh h\u01a1n. Quy\u1ebft \u0111\u1ecbnh chu\u1ea9n h\u00f3a hay phi chu\u1ea9n h\u00f3a c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u01b0a ra d\u1ef1a tr\u00ean c\u00e1c nhu c\u1ea7u c\u1ee5 th\u1ec3 v\u00e0 c\u00e1c th\u1ecfa hi\u1ec7p trong \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n.<\/p>\n<p>Chu\u1ea9n h\u00f3a th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u1ea5p \u0111\u1ed9 logic c\u1ee7a ERD \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ed5 ch\u1ee9c d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 v\u00e0 t\u00ednh to\u00e0n v\u1eb9n, nh\u01b0ng \u0111i\u1ec1u \u0111\u00f3 kh\u00f4ng nh\u1ea5t thi\u1ebft lu\u00f4n c\u1ea7n thi\u1ebft, t\u00f9y thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u c\u1ee7a \u1ee9ng d\u1ee5ng v\u00e0 m\u1ee5c ti\u00eau thi\u1ebft k\u1ebf \u1edf c\u1ea5p \u0111\u1ed9 v\u1eadt l\u00fd.<\/p>\n<h2>Chu\u1ea9n h\u00f3a hay phi chu\u1ea9n h\u00f3a, khi n\u00e0o v\u00e0 v\u00ec sao?<\/h2>\n<p>Chu\u1ea9n h\u00f3a v\u00e0 phi chu\u1ea9n h\u00f3a l\u00e0 hai chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ed1i l\u1eadp trong vi\u1ec7c t\u1ed5 ch\u1ee9c d\u1eef li\u1ec7u trong c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7, v\u00e0 vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa ch\u00fang ph\u1ee5 thu\u1ed9c v\u00e0o nhu c\u1ea7u v\u00e0 m\u1ee5c ti\u00eau c\u1ee5 th\u1ec3 c\u1ee7a \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 so s\u00e1nh v\u1ec1 khi n\u00e0o v\u00e0 v\u00ec sao b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn chu\u1ea9n h\u00f3a ho\u1eb7c phi chu\u1ea9n h\u00f3a c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh:<\/p>\n<p><strong>Chu\u1ea9n h\u00f3a:<\/strong><\/p>\n<ol>\n<li><strong>Khi n\u00e0o n\u00ean chu\u1ea9n h\u00f3a:<\/strong>\n<ul>\n<li>S\u1eed d\u1ee5ng chu\u1ea9n h\u00f3a khi t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u l\u00e0 \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u, v\u00e0 b\u1ea1n mu\u1ed1n gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng l\u1eb7p d\u1eef li\u1ec7u c\u0169ng nh\u01b0 tr\u00e1nh c\u00e1c l\u1ed7i (l\u1ed7i ch\u00e8n, l\u1ed7i c\u1eadp nh\u1eadt v\u00e0 l\u1ed7i x\u00f3a d\u1eef li\u1ec7u).<\/li>\n<li>\u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u giao d\u1ecbch, n\u01a1i \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n d\u1eef li\u1ec7u l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t.<\/li>\n<\/ul>\n<\/li>\n<li><strong>T\u1ea1i sao n\u00ean chu\u1ea9n h\u00f3a:<\/strong>\n<ul>\n<li>Gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng l\u1eb7p d\u1eef li\u1ec7u: Chu\u1ea9n h\u00f3a chia d\u1eef li\u1ec7u th\u00e0nh c\u00e1c b\u1ea3ng ri\u00eang bi\u1ec7t \u0111\u1ec3 tr\u00e1nh sao ch\u00e9p c\u00f9ng m\u1ed9t th\u00f4ng tin, gi\u00fap ti\u1ebft ki\u1ec7m kh\u00f4ng gian l\u01b0u tr\u1eef v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n.<\/li>\n<li>\u0110\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c c\u1eadp nh\u1eadt: V\u1edbi d\u1eef li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a, b\u1ea1n ch\u1ec9 c\u1ea7n c\u1eadp nh\u1eadt th\u00f4ng tin t\u1ea1i m\u1ed9t n\u01a1i duy nh\u1ea5t, gi\u1ea3m thi\u1ec3u r\u1ee7i ro d\u1eef li\u1ec7u kh\u00f4ng nh\u1ea5t qu\u00e1n.<\/li>\n<li>H\u1ed7 tr\u1ee3 c\u00e1c m\u1ed1i quan h\u1ec7 ph\u1ee9c t\u1ea1p: Chu\u1ea9n h\u00f3a cho ph\u00e9p b\u1ea1n bi\u1ec3u di\u1ec5n ch\u00ednh x\u00e1c c\u00e1c m\u1ed1i quan h\u1ec7 ph\u1ee9c t\u1ea1p gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3.<\/li>\n<\/ul>\n<\/li>\n<li><strong>C\u00e1c d\u1ea1ng chu\u1ea9n h\u00f3a:<\/strong>\n<ul>\n<li>C\u00f3 m\u1ed9t s\u1ed1 d\u1ea1ng chu\u1ea9n h\u00f3a, bao g\u1ed3m 1NF, 2NF, 3NF, BCNF v\u00e0 c\u00e1c d\u1ea1ng kh\u00e1c, m\u1ed7i d\u1ea1ng c\u00f3 c\u00e1c quy t\u1eafc c\u1ee5 th\u1ec3 nh\u1eb1m \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c m\u1ee9c \u0111\u1ed9 to\u00e0n v\u1eb9n d\u1eef li\u1ec7u ng\u00e0y c\u00e0ng cao v\u00e0 gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng l\u1eb7p d\u1eef li\u1ec7u.<\/li>\n<li>Vi\u1ec7c l\u1ef1a ch\u1ecdn d\u1ea1ng chu\u1ea9n h\u00f3a ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a d\u1eef li\u1ec7u v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><strong>Chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c:<\/strong><\/p>\n<ol>\n<li><strong>Khi n\u00e0o n\u00ean chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c:<\/strong>\n<ul>\n<li>S\u1eed d\u1ee5ng chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c khi b\u1ea1n c\u1ea7n t\u1ed1i \u01b0u hi\u1ec7u su\u1ea5t truy v\u1ea5n, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi c\u00e1c t\u1ea3i c\u00f4ng vi\u1ec7c \u0111\u1ecdc d\u1eef li\u1ec7u cao ho\u1eb7c c\u01a1 s\u1edf d\u1eef li\u1ec7u b\u00e1o c\u00e1o.<\/li>\n<li>\u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u00f9 h\u1ee3p trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p m\u00e0 s\u1ef1 tr\u00f9ng l\u1eb7p d\u1eef li\u1ec7u l\u00e0 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c n\u1ebfu \u0111i\u1ec1u \u0111\u00f3 d\u1eabn \u0111\u1ebfn vi\u1ec7c th\u1ef1c thi truy v\u1ea5n nhanh h\u01a1n \u0111\u00e1ng k\u1ec3.<\/li>\n<\/ul>\n<\/li>\n<li><strong>T\u1ea1i sao n\u00ean chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c:<\/strong>\n<ul>\n<li>C\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t truy v\u1ea5n: B\u1eb1ng c\u00e1ch gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng ph\u00e9p n\u1ed1i v\u00e0 t\u1ed1i thi\u1ec3u h\u00f3a nhu c\u1ea7u l\u1ea5y d\u1eef li\u1ec7u t\u1eeb nhi\u1ec1u b\u1ea3ng, chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c c\u00f3 th\u1ec3 l\u00e0m nhanh h\u01a1n qu\u00e1 tr\u00ecnh truy xu\u1ea5t d\u1eef li\u1ec7u.<\/li>\n<li>T\u1ed5ng h\u1ee3p v\u00e0 b\u00e1o c\u00e1o: C\u00e1c c\u1ea5u tr\u00fac \u0111\u00e3 chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c th\u01b0\u1eddng ph\u00f9 h\u1ee3p h\u01a1n v\u1edbi b\u00e1o c\u00e1o v\u00e0 ph\u00e2n t\u00edch v\u00ec ch\u00fang c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a truy v\u1ea5n.<\/li>\n<li>L\u01b0u tr\u1eef t\u1ea1m: Chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 vi\u1ec7c l\u01b0u tr\u1eef d\u1eef li\u1ec7u t\u1ea1m, t\u1eeb \u0111\u00f3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t th\u00eam n\u1eefa.<\/li>\n<\/ul>\n<\/li>\n<li><strong>L\u01b0u \u00fd:<\/strong>\n<ul>\n<li>Chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c t\u1ea1o ra m\u1ed9t m\u1ee9c \u0111\u1ed9 tr\u00f9ng l\u1eb7p nh\u1ea5t \u0111\u1ecbnh, \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 b\u1ea1n c\u1ea7n qu\u1ea3n l\u00fd c\u1ea9n th\u1eadn c\u00e1c thao t\u00e1c c\u1eadp nh\u1eadt \u0111\u1ec3 duy tr\u00ec t\u00ednh nh\u1ea5t qu\u00e1n d\u1eef li\u1ec7u.<\/li>\n<li>N\u00f3 c\u00f3 th\u1ec3 kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u m\u00e0 to\u00e0n v\u1eb9n d\u1eef li\u1ec7u l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t, ch\u1eb3ng h\u1ea1n nh\u01b0 h\u1ec7 th\u1ed1ng t\u00e0i ch\u00ednh ho\u1eb7c c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 y\u00eau c\u1ea7u quy \u0111\u1ecbnh nghi\u00eam ng\u1eb7t.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><strong>C\u00e1c ph\u01b0\u01a1ng ph\u00e1p k\u1ebft h\u1ee3p:<\/strong><\/p>\n<ul>\n<li>Trong th\u1ef1c t\u1ebf, nhi\u1ec1u c\u01a1 s\u1edf d\u1eef li\u1ec7u s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p gi\u1eefa chu\u1ea9n h\u00f3a v\u00e0 chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c. B\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn l\u1ecdc chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c m\u1ed9t s\u1ed1 ph\u1ea7n c\u1ee5 th\u1ec3 c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t, trong khi v\u1eabn gi\u1eef c\u00e1c ph\u1ea7n kh\u00e1c \u1edf d\u1ea1ng chu\u1ea9n h\u00f3a \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o to\u00e0n v\u1eb9n d\u1eef li\u1ec7u.<\/li>\n<li>C\u00e1c ph\u01b0\u01a1ng ph\u00e1p k\u1ebft h\u1ee3p \u0111\u00f2i h\u1ecfi thi\u1ebft k\u1ebf v\u00e0 b\u1ea3o tr\u00ec c\u1ea9n tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u v\u1eabn nh\u1ea5t qu\u00e1n v\u00e0 c\u00e1c th\u1ecfa hi\u1ec7p gi\u1eefa to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng t\u1ed1t.<\/li>\n<\/ul>\n<p>K\u1ebft lu\u1eadn, quy\u1ebft \u0111\u1ecbnh chu\u1ea9n h\u00f3a hay chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n n\u00ean d\u1ef1a tr\u00ean c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a \u1ee9ng d\u1ee5ng, v\u1edbi tr\u1ecdng t\u00e2m l\u00e0 to\u00e0n v\u1eb9n d\u1eef li\u1ec7u trong chu\u1ea9n h\u00f3a v\u00e0 hi\u1ec7u su\u1ea5t truy v\u1ea5n trong chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c. Trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00e2n b\u1eb1ng k\u1ebft h\u1ee3p c\u1ea3 hai chi\u1ebfn l\u01b0\u1ee3c c\u00f3 th\u1ec3 l\u00e0 gi\u1ea3i ph\u00e1p t\u1ed1t nh\u1ea5t.<\/p>\n<h2>V\u00ed d\u1ee5 v\u1ec1 chu\u1ea9n h\u00f3a v\u00e0 chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c<\/h2>\n<p><strong>M\u00f4 t\u1ea3 v\u1ea5n \u0111\u1ec1:<\/strong><\/p>\n<p>B\u1ea1n \u0111\u01b0\u1ee3c giao nhi\u1ec7m v\u1ee5 thi\u1ebft k\u1ebf m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u cho m\u1ed9t n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed b\u00e1n nhi\u1ec1u lo\u1ea1i s\u1ea3n ph\u1ea9m. C\u01a1 s\u1edf d\u1eef li\u1ec7u n\u00e0y c\u1ea7n x\u1eed l\u00fd c\u1ea3 d\u1eef li\u1ec7u giao d\u1ecbch cho mua s\u1eafm tr\u1ef1c tuy\u1ebfn l\u1eabn b\u00e1o c\u00e1o ph\u1ee5c v\u1ee5 ph\u00e2n t\u00edch kinh doanh. M\u1ee5c ti\u00eau c\u1ee7a b\u1ea1n l\u00e0 t\u00ecm s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa vi\u1ec7c duy tr\u00ec to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t truy v\u1ea5n t\u1ed1i \u01b0u.<\/p>\n<p><strong>V\u00ed d\u1ee5:<\/strong><\/p>\n<p>X\u00e9t m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed ch\u1ee9a th\u00f4ng tin v\u1ec1 s\u1ea3n ph\u1ea9m, \u0111\u01a1n h\u00e0ng, kh\u00e1ch h\u00e0ng v\u00e0 \u0111\u00e1nh gi\u00e1. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch b\u1ea1n c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn v\u1ea5n \u0111\u1ec1 b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng chu\u1ea9n h\u00f3a v\u00e0 chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c:<\/p>\n<p><strong>Chu\u1ea9n h\u00f3a:<\/strong><\/p>\n<ol>\n<li><strong>C\u00e1c th\u1ef1c th\u1ec3:<\/strong>\n<ul>\n<li>S\u1ea3n ph\u1ea9m<\/li>\n<li>Kh\u00e1ch h\u00e0ng<\/li>\n<li>\u0110\u01a1n h\u00e0ng<\/li>\n<li>Chi ti\u1ebft \u0111\u01a1n h\u00e0ng (c\u00e1c m\u1ee5c chi ti\u1ebft trong \u0111\u01a1n h\u00e0ng)<\/li>\n<li>\u0110\u00e1nh gi\u00e1<\/li>\n<\/ul>\n<\/li>\n<li><strong>Ph\u01b0\u01a1ng ph\u00e1p chu\u1ea9n h\u00f3a:<\/strong>\n<ul>\n<li>S\u1eafp x\u1ebfp d\u1eef li\u1ec7u \u0111\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng l\u1eb7p v\u00e0 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u.<\/li>\n<li>S\u1eed d\u1ee5ng c\u00e1c b\u1ea3ng ri\u00eang bi\u1ec7t cho m\u1ed7i th\u1ef1c th\u1ec3 v\u00e0 thi\u1ebft l\u1eadp m\u1ed1i quan h\u1ec7 b\u1eb1ng c\u00e1c kh\u00f3a ngo\u1ea1i.<\/li>\n<li>V\u00ed d\u1ee5, b\u1ea1n c\u00f3 b\u1ea3ng \u201cKh\u00e1ch h\u00e0ng\u201d, b\u1ea3ng \u201c\u0110\u01a1n h\u00e0ng\u201d v\u00e0 b\u1ea3ng \u201cChi ti\u1ebft \u0111\u01a1n h\u00e0ng\u201d, m\u1ed7i b\u1ea3ng \u0111\u01b0\u1ee3c li\u00ean k\u1ebft th\u00f4ng qua m\u00e3 kh\u00e1ch h\u00e0ng v\u00e0 m\u00e3 \u0111\u01a1n h\u00e0ng.<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong>\n<ul>\n<li>\u0110\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a d\u1eef li\u1ec7u, gi\u1ea3m thi\u1ec3u r\u1ee7i ro x\u1ea3y ra l\u1ed7i b\u1ea5t th\u01b0\u1eddng.<\/li>\n<li>\u0110\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c c\u1eadp nh\u1eadt d\u1eef li\u1ec7u, v\u00ec c\u00e1c thay \u0111\u1ed5i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ea1i m\u1ed9t n\u01a1i.<\/li>\n<li>H\u1ed7 tr\u1ee3 c\u00e1c m\u1ed1i quan h\u1ec7 ph\u1ee9c t\u1ea1p, nh\u01b0 nhi\u1ec1u kh\u00e1ch h\u00e0ng \u0111\u1eb7t nhi\u1ec1u \u0111\u01a1n h\u00e0ng.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><strong>Chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c:<\/strong><\/p>\n<ol>\n<li><strong>C\u00e1c th\u1ef1c th\u1ec3:<\/strong>\n<ul>\n<li>S\u1ea3n ph\u1ea9m<\/li>\n<li>\u0110\u01a1n h\u00e0ng<\/li>\n<li>Kh\u00e1ch h\u00e0ng<\/li>\n<li>\u0110\u00e1nh gi\u00e1 (v\u1edbi th\u00f4ng tin s\u1ea3n ph\u1ea9m v\u00e0 kh\u00e1ch h\u00e0ng \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c)<\/li>\n<\/ul>\n<\/li>\n<li><strong>Ph\u01b0\u01a1ng ph\u00e1p chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c:<\/strong>\n<ul>\n<li>T\u1ed1i \u01b0u h\u00f3a cho c\u00e1c t\u00e1c v\u1ee5 \u0111\u1ecdc d\u1eef li\u1ec7u n\u1eb7ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ec3 t\u1ea1o b\u00e1o c\u00e1o v\u00e0 \u0111\u1ec1 xu\u1ea5t s\u1ea3n ph\u1ea9m.<\/li>\n<li>K\u1ebft h\u1ee3p d\u1eef li\u1ec7u t\u1eeb nhi\u1ec1u b\u1ea3ng v\u00e0o m\u1ed9t b\u1ea3ng duy nh\u1ea5t ho\u1eb7c m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c b\u1ea3ng chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c.<\/li>\n<li>V\u00ed d\u1ee5, b\u1ea1n c\u00f3 b\u1ea3ng \u201c\u0110\u00e1nh gi\u00e1 s\u1ea3n ph\u1ea9m\u201d bao g\u1ed3m th\u00f4ng tin kh\u00e1ch h\u00e0ng v\u00e0 s\u1ea3n ph\u1ea9m, gi\u1ea3m nhu c\u1ea7u th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p n\u1ed1i.<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong>\n<ul>\n<li>C\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t truy v\u1ea5n b\u1eb1ng c\u00e1ch gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng ph\u00e9p n\u1ed1i.<\/li>\n<li>N\u00e2ng cao kh\u1ea3 n\u0103ng b\u00e1o c\u00e1o, gi\u00fap vi\u1ec7c t\u1ea1o b\u00e1o c\u00e1o \u0111\u00e1nh gi\u00e1 s\u1ea3n ph\u1ea9m v\u00e0 \u0111\u1ec1 xu\u1ea5t tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n.<\/li>\n<li>T\u0103ng t\u1ed1c c\u00e1c t\u00e1c v\u1ee5 ph\u00e2n t\u00edch, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u00ednh gi\u00e1 tr\u1ecb v\u00f2ng \u0111\u1eddi kh\u00e1ch h\u00e0ng.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><strong>Ph\u01b0\u01a1ng ph\u00e1p k\u1ebft h\u1ee3p:<\/strong><\/p>\n<ol>\n<li><strong>C\u00e1c th\u1ef1c th\u1ec3:<\/strong>\n<ul>\n<li>S\u1ea3n ph\u1ea9m<\/li>\n<li>Kh\u00e1ch h\u00e0ng<\/li>\n<li>\u0110\u01a1n h\u00e0ng<\/li>\n<li>Chi ti\u1ebft \u0111\u01a1n h\u00e0ng (chu\u1ea9n h\u00f3a)<\/li>\n<li>\u0110\u00e1nh gi\u00e1 (chu\u1ea9n h\u00f3a ng\u01b0\u1ee3c m\u1ed9t ph\u1ea7n)<\/li>\n<\/ul>\n<\/li>\n<li><strong>Ph\u01b0\u01a1ng ph\u00e1p k\u1ebft h\u1ee3p:<\/strong>\n<ul>\n<li>Chu\u1ea9n h\u00f3a d\u1eef li\u1ec7u \u1edf nh\u1eefng n\u01a1i m\u00e0 t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u l\u00e0 \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u (v\u00ed d\u1ee5: \u201c\u0110\u01a1n h\u00e0ng\u201d v\u00e0 \u201cChi ti\u1ebft \u0111\u01a1n h\u00e0ng\u201d).<\/li>\n<li>Kh\u00f4ng chu\u1ea9n h\u00f3a d\u1eef li\u1ec7u th\u01b0\u1eddng xuy\u00ean \u0111\u01b0\u1ee3c truy c\u1eadp \u0111\u1ec3 b\u00e1o c\u00e1o v\u00e0 ph\u00e2n t\u00edch (v\u00ed d\u1ee5: \u201c\u0110\u00e1nh gi\u00e1 s\u1ea3n ph\u1ea9m\u201d v\u1edbi m\u1ed9t s\u1ed1 th\u00f4ng tin kh\u00e1ch h\u00e0ng v\u00e0 s\u1ea3n ph\u1ea9m \u0111\u00e3 kh\u00f4ng chu\u1ea9n h\u00f3a).<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong>\n<ul>\n<li>T\u1ea1o s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t truy v\u1ea5n.<\/li>\n<li>\u0110\u1ea3m b\u1ea3o d\u1eef li\u1ec7u giao d\u1ecbch quan tr\u1ecdng v\u1eabn \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a.<\/li>\n<li>T\u1ed1i \u01b0u hi\u1ec7u su\u1ea5t cho c\u00e1c truy v\u1ea5n b\u00e1o c\u00e1o v\u00e0 ph\u00e2n t\u00edch b\u1eb1ng c\u00e1ch gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng ph\u00e9p n\u1ed1i.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>Trong t\u00ecnh hu\u1ed1ng n\u00e0y, vi\u1ec7c l\u1ef1a ch\u1ecdn m\u1ee9c \u0111\u1ed9 c\u00e2n b\u1eb1ng ph\u00f9 h\u1ee3p gi\u1eefa chu\u1ea9n h\u00f3a v\u00e0 kh\u00f4ng chu\u1ea9n h\u00f3a ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed c\u1ee7a b\u1ea1n. D\u1eef li\u1ec7u quan tr\u1ecdng li\u00ean quan \u0111\u1ebfn \u0111\u01a1n h\u00e0ng v\u00e0 giao d\u1ecbch n\u00ean \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a t\u1ed1t \u0111\u1ec3 duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u, trong khi d\u1eef li\u1ec7u d\u00f9ng \u0111\u1ec3 b\u00e1o c\u00e1o v\u00e0 hi\u1ec3u bi\u1ebft v\u1ec1 kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i t\u1eeb vi\u1ec7c kh\u00f4ng chu\u1ea9n h\u00f3a \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t truy v\u1ea5n.<\/p>\n<p>B\u1ea3ng \u0111\u01a1n gi\u1ea3n h\u00f3a sau \u0111\u00e2y minh h\u1ecda ba ph\u01b0\u01a1ng ph\u00e1p thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u (Chu\u1ea9n h\u00f3a, Kh\u00f4ng chu\u1ea9n h\u00f3a v\u00e0 K\u1ebft h\u1ee3p) cho v\u00ed d\u1ee5 v\u1ec1 c\u01a1 s\u1edf d\u1eef li\u1ec7u th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0110\u01a1n v\u1ecb<\/th>\n<th>Ph\u01b0\u01a1ng ph\u00e1p chu\u1ea9n h\u00f3a<\/th>\n<th>Ph\u01b0\u01a1ng ph\u00e1p kh\u00f4ng chu\u1ea9n h\u00f3a<\/th>\n<th>Ph\u01b0\u01a1ng ph\u00e1p k\u1ebft h\u1ee3p<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>S\u1ea3n ph\u1ea9m<\/td>\n<td>B\u1ea3ng S\u1ea3n ph\u1ea9m v\u1edbi Product_ID, T\u00ean, M\u00f4 t\u1ea3, v.v. ri\u00eang bi\u1ec7t<\/td>\n<td>B\u1ea3ng S\u1ea3n ph\u1ea9m v\u1edbi t\u1ea5t c\u1ea3 chi ti\u1ebft, bao g\u1ed3m \u0111\u00e1nh gi\u00e1 v\u00e0 th\u00f4ng tin kh\u00e1ch h\u00e0ng<\/td>\n<td>B\u1ea3ng S\u1ea3n ph\u1ea9m (chu\u1ea9n h\u00f3a) + \u0110\u00e1nh gi\u00e1 S\u1ea3n ph\u1ea9m (kh\u00f4ng chu\u1ea9n h\u00f3a)<\/td>\n<\/tr>\n<tr>\n<td>Kh\u00e1ch h\u00e0ng<\/td>\n<td>B\u1ea3ng Kh\u00e1ch h\u00e0ng v\u1edbi Customer_ID, T\u00ean, \u0110\u1ecba ch\u1ec9, Email, v.v.<\/td>\n<td>B\u1ea3ng Kh\u00e1ch h\u00e0ng v\u1edbi l\u1ecbch s\u1eed \u0111\u01a1n h\u00e0ng v\u00e0 \u0111\u00e1nh gi\u00e1 b\u1ed5 sung<\/td>\n<td>B\u1ea3ng Kh\u00e1ch h\u00e0ng (chu\u1ea9n h\u00f3a) + \u0110\u01a1n h\u00e0ng Kh\u00e1ch h\u00e0ng (kh\u00f4ng chu\u1ea9n h\u00f3a)<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u01a1n h\u00e0ng<\/td>\n<td>B\u1ea3ng \u0110\u01a1n h\u00e0ng v\u1edbi Order_ID, Customer_ID, Ng\u00e0y, T\u1ed5ng, v.v.<\/td>\n<td>B\u1ea3ng \u0110\u01a1n h\u00e0ng v\u1edbi chi ti\u1ebft kh\u00e1ch h\u00e0ng v\u00e0 s\u1ea3n ph\u1ea9m kh\u00f4ng chu\u1ea9n h\u00f3a<\/td>\n<td>B\u1ea3ng \u0110\u01a1n h\u00e0ng (chu\u1ea9n h\u00f3a) + Chi ti\u1ebft \u0110\u01a1n h\u00e0ng (chu\u1ea9n h\u00f3a)<\/td>\n<\/tr>\n<tr>\n<td>Chi ti\u1ebft \u0110\u01a1n h\u00e0ng<\/td>\n<td>B\u1ea3ng Chi ti\u1ebft \u0110\u01a1n h\u00e0ng v\u1edbi Order_Item_ID, Order_ID, Product_ID, S\u1ed1 l\u01b0\u1ee3ng, v.v.<\/td>\n<td>Kh\u00f4ng \u00e1p d\u1ee5ng<\/td>\n<td>B\u1ea3ng Chi ti\u1ebft \u0110\u01a1n h\u00e0ng (chu\u1ea9n h\u00f3a)<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u00e1nh gi\u00e1<\/td>\n<td>B\u1ea3ng \u0110\u00e1nh gi\u00e1 v\u1edbi Review_ID, Product_ID, Customer_ID, \u0110i\u1ec3m \u0111\u00e1nh gi\u00e1, B\u00ecnh lu\u1eadn, v.v.<\/td>\n<td>B\u1ea3ng \u0111\u00e1nh gi\u00e1 s\u1ea3n ph\u1ea9m v\u1edbi th\u00f4ng tin s\u1ea3n ph\u1ea9m v\u00e0 kh\u00e1ch h\u00e0ng \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p<\/td>\n<td>B\u1ea3ng \u0111\u00e1nh gi\u00e1 (\u0111\u00e3 chu\u1ea9n h\u00f3a)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Trong b\u1ea3ng n\u00e0y:<\/p>\n<ul>\n<li>Ph\u01b0\u01a1ng ph\u00e1p chu\u1ea9n h\u00f3a nh\u1ea5n m\u1ea1nh v\u00e0o t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng l\u1eb7p b\u1eb1ng c\u00e1ch duy tr\u00ec c\u00e1c b\u1ea3ng chu\u1ea9n h\u00f3a ri\u00eang bi\u1ec7t cho t\u1eebng th\u1ef1c th\u1ec3.<\/li>\n<li>Ph\u01b0\u01a1ng ph\u00e1p phi chu\u1ea9n h\u00f3a t\u1ed1i \u01b0u hi\u1ec7u su\u1ea5t truy v\u1ea5n b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p d\u1eef li\u1ec7u li\u00ean quan v\u00e0o m\u1ed9t b\u1ea3ng duy nh\u1ea5t ho\u1eb7c b\u1eb1ng c\u00e1ch l\u00e0m ph\u1eb3ng c\u1ea5u tr\u00fac d\u1eef li\u1ec7u.<\/li>\n<li>Ph\u01b0\u01a1ng ph\u00e1p k\u1ebft h\u1ee3p t\u1ea1o ra s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t, k\u1ebft h\u1ee3p c\u00e1c b\u1ea3ng chu\u1ea9n h\u00f3a cho d\u1eef li\u1ec7u giao d\u1ecbch quan tr\u1ecdng v\u00e0 c\u00e1c b\u1ea3ng phi chu\u1ea9n h\u00f3a cho nhu c\u1ea7u b\u00e1o c\u00e1o v\u00e0 ph\u00e2n t\u00edch.<\/li>\n<\/ul>\n<p>Vui l\u00f2ng l\u01b0u \u00fd r\u1eb1ng \u0111\u00e2y ch\u1ec9 l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n \u0111\u01a1n gi\u1ea3n, v\u00e0 trong th\u1ef1c t\u1ebf, s\u01a1 \u0111\u1ed3 c\u01a1 s\u1edf d\u1eef li\u1ec7u s\u1ebd ph\u1ee9c t\u1ea1p h\u01a1n, v\u1edbi c\u00e1c c\u00e2n nh\u1eafc b\u1ed5 sung v\u1ec1 ch\u1ec9 m\u1ee5c, kh\u00f3a v\u00e0 r\u00e0ng bu\u1ed9c.<\/p>\n<h2><strong>T\u00f3m t\u1eaft<\/strong><\/h2>\n<p>Thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 m\u1ed9t ngh\u1ec7 thu\u1eadt tinh t\u1ebf \u0111\u00f2i h\u1ecfi c\u00e1ch ti\u1ebfp c\u1eadn c\u1ea9n tr\u1ecdng trong vi\u1ec7c qu\u1ea3n l\u00fd d\u1eef li\u1ec7u. Chu\u1ea9n h\u00f3a, v\u1edbi tr\u1ecdng t\u00e2m v\u00e0o t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng l\u1eb7p, \u0111\u00f3ng vai tr\u00f2 n\u1ec1n t\u1ea3ng trong vi\u1ec7c duy tr\u00ec d\u1eef li\u1ec7u s\u1ea1ch v\u00e0 nh\u1ea5t qu\u00e1n. \u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean khi x\u1eed l\u00fd c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u giao d\u1ecbch y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 tin c\u1eady cao, nh\u01b0 c\u00e1c h\u1ec7 th\u1ed1ng t\u00e0i ch\u00ednh.<\/p>\n<p>M\u1eb7t kh\u00e1c, phi chu\u1ea9n h\u00f3a t\u1ecfa s\u00e1ng trong nh\u1eefng t\u00ecnh hu\u1ed1ng m\u00e0 hi\u1ec7u su\u1ea5t truy v\u1ea5n \u0111\u01b0\u1ee3c \u01b0u ti\u00ean h\u01a1n t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u. B\u1eb1ng c\u00e1ch c\u00f3 chi\u1ebfn l\u01b0\u1ee3c \u0111\u01b0a v\u00e0o s\u1ef1 tr\u00f9ng l\u1eb7p v\u00e0 l\u00e0m ph\u1eb3ng c\u1ea5u tr\u00fac d\u1eef li\u1ec7u, phi chu\u1ea9n h\u00f3a c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 t\u1ed1c \u0111\u1ed9 v\u00e0 hi\u1ec7u qu\u1ea3 truy xu\u1ea5t d\u1eef li\u1ec7u. \u0110\u00e2y l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt qu\u00fd gi\u00e1 cho c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u x\u1eed l\u00fd b\u00e1o c\u00e1o v\u00e0 ph\u00e2n t\u00edch, n\u01a1i c\u00e1c truy v\u1ea5n ph\u1ee9c t\u1ea1p c\u1ea7n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nhanh ch\u00f3ng.<\/p>\n<p>M\u1eb7c d\u00f9 chu\u1ea9n h\u00f3a v\u00e0 phi chu\u1ea9n h\u00f3a \u0111\u1ea1i di\u1ec7n cho hai \u0111\u1ea7u c\u1ee7a ph\u1ed5, th\u1ef1c t\u1ebf th\u01b0\u1eddng \u0111\u00f2i h\u1ecfi m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p k\u1ebft h\u1ee3p. K\u1ebft h\u1ee3p c\u1ea3 hai chi\u1ebfn l\u01b0\u1ee3c gi\u00fap b\u1ea1n t\u1eadn d\u1ee5ng \u0111\u01b0\u1ee3c l\u1ee3i \u00edch c\u1ee7a m\u1ed7i ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ed3ng th\u1eddi gi\u1ea3m thi\u1ec3u nh\u1eefng nh\u01b0\u1ee3c \u0111i\u1ec3m t\u01b0\u01a1ng \u1ee9ng. C\u00e1ch ti\u1ebfp c\u1eadn c\u00e2n b\u1eb1ng n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch khi x\u00e2y d\u1ef1ng c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u linh ho\u1ea1t, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, n\u01a1i vi\u1ec7c duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u cho giao d\u1ecbch v\u00e0 \u0111\u1ea3m b\u1ea3o b\u00e1o c\u00e1o nhanh ch\u00f3ng \u0111\u1ec1u c\u00f3 t\u1ea7m quan tr\u1ecdng ngang nhau.<\/p>\n<p>Cu\u1ed1i c\u00f9ng, vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa chu\u1ea9n h\u00f3a v\u00e0 phi chu\u1ea9n h\u00f3a ph\u1ee5 thu\u1ed9c v\u00e0o nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n. Khi b\u1ea1n kh\u00e1m ph\u00e1 th\u1ebf gi\u1edbi thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u, h\u00e3y nh\u1edb r\u1eb1ng kh\u00f4ng c\u00f3 gi\u1ea3i ph\u00e1p n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi m\u1ecdi tr\u01b0\u1eddng h\u1ee3p. B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 nh\u1eefng tinh t\u1ebf c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ph\u00e1p n\u00e0y v\u00e0 \u0111\u00e1nh gi\u00e1 c\u1ea9n th\u1eadn c\u00e1c y\u00eau c\u1ea7u c\u1ee7a \u1ee9ng d\u1ee5ng, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 c\u00e2n b\u1eb1ng ho\u00e0n h\u1ea3o gi\u1eefa t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t, t\u1ea1o n\u1ec1n t\u1ea3ng cho m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1nh m\u1ebd v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gi\u1edbi thi\u1ec7u Trong l\u0129nh v\u1ef1c thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u, vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa chu\u1ea9n h\u00f3a v\u00e0 phi chu\u1ea9n h\u00f3a l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh then ch\u1ed1t c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n. D\u00f9 b\u1ea1n \u0111ang thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u cho m\u1ed9t n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, m\u1ed9t t\u1ed5 ch\u1ee9c t\u00e0i ch\u00ednh hay b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng n\u00e0o kh\u00e1c, vi\u1ec7c t\u00ecm ra s\u1ef1 c\u00e2n b\u1eb1ng ph\u00f9 h\u1ee3p gi\u1eefa t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t truy v\u1ea5n l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu cho th\u00e0nh c\u00f4ng. B\u00e0i vi\u1ebft n\u00e0y kh\u00e1m ph\u00e1 c\u00e1c nguy\u00ean t\u1eafc c\u1ee7a chu\u1ea9n h\u00f3a v\u00e0 phi chu\u1ea9n h\u00f3a, l\u00e0m r\u00f5 khi n\u00e0o v\u00e0 t\u1ea1i sao b\u1ea1n n\u00ean ch\u1ecdn m\u1ed7i ph\u01b0\u01a1ng ph\u00e1p. Th\u00f4ng qua c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n c\u00e2n nh\u1eafc, ch\u00fang t\u00f4i s\u1ebd d\u1eabn d\u1eaft b\u1ea1n qua b\u1ee9c tranh ph\u1ee9c t\u1ea1p c\u1ee7a thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec3 gi\u00fap b\u1ea1n \u0111\u01b0a ra nh\u1eefng quy\u1ebft \u0111\u1ecbnh th\u00f4ng th\u00e1i ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u ri\u00eang bi\u1ec7t c\u1ee7a d\u1ef1 \u00e1n. Chu\u1ea9n h\u00f3a trong thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 g\u00ec Chu\u1ea9n h\u00f3a th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u1ea5p \u0111\u1ed9 thi\u1ebft k\u1ebf logic c\u1ee7a s\u01a1 \u0111\u1ed3 Entiti-Quan h\u1ec7 (ERD), c\u1ee5 th\u1ec3 trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u. H\u00e3y c\u00f9ng ph\u00e2n t\u00edch m\u1ed1i quan h\u1ec7 gi\u1eefa chu\u1ea9n h\u00f3a v\u00e0 c\u00e1c c\u1ea5p \u0111\u1ed9 kh\u00e1c nhau c\u1ee7a ERD (kh\u00e1i ni\u1ec7m, logic v\u00e0 v\u1eadt l\u00fd): C\u1ea5p \u0111\u1ed9 kh\u00e1i ni\u1ec7m: \u1ede c\u1ea5p \u0111\u1ed9 kh\u00e1i ni\u1ec7m c\u1ee7a ERD, b\u1ea1n t\u1eadp trung v\u00e0o m\u00f4 h\u00ecnh h\u00f3a c\u1ea5p cao c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng \u0111i s\u00e2u v\u00e0o chi ti\u1ebft thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u. B\u1ea1n x\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3, thu\u1ed9c t\u00ednh c\u1ee7a ch\u00fang v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang, th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u nh\u01b0 s\u01a1 \u0111\u1ed3 Entiti-Quan h\u1ec7 ho\u1eb7c c\u00e1c s\u01a1 \u0111\u1ed3 c\u1ea5p cao kh\u00e1c. Chu\u1ea9n h\u00f3a th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y, v\u00ec n\u00f3 li\u00ean quan \u0111\u1ebfn t\u1ed5 ch\u1ee9c d\u1eef li\u1ec7u chi ti\u1ebft, v\u01b0\u1ee3t ra ngo\u00e0i ph\u1ea1m vi c\u1ee7a m\u00f4 h\u00ecnh kh\u00e1i ni\u1ec7m. C\u1ea5p \u0111\u1ed9 logic: C\u1ea5p \u0111\u1ed9 logic c\u1ee7a ERD l\u00e0 n\u01a1i b\u1ea1n b\u1eaft \u0111\u1ea7u chuy\u1ec3n \u0111\u1ed5i c\u00e1c kh\u00e1i ni\u1ec7m c\u1ea5p cao t\u1eeb m\u00f4 h\u00ecnh kh\u00e1i ni\u1ec7m th\u00e0nh m\u1ed9t m\u00f4 h\u00ecnh d\u1eef li\u1ec7u chi ti\u1ebft h\u01a1n cho c\u01a1 s\u1edf d\u1eef li\u1ec7u. B\u1ea1n x\u00e1c \u0111\u1ecbnh c\u00e1c b\u1ea3ng, c\u1ed9t, ki\u1ec3u d\u1eef li\u1ec7u, kh\u00f3a ch\u00ednh, kh\u00f3a ngo\u1ea1i v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c b\u1ea3ng. Chu\u1ea9n h\u00f3a th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng nhi\u1ec1u nh\u1ea5t \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y. M\u1ee5c ti\u00eau c\u1ee7a chu\u1ea9n h\u00f3a l\u00e0 \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c hi\u1ec7u qu\u1ea3, t\u1ed1i thi\u1ec3u h\u00f3a s\u1ef1 tr\u00f9ng l\u1eb7p v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro x\u1ea3y ra l\u1ed7i d\u1eef li\u1ec7u (nh\u01b0 l\u1ed7i c\u1eadp nh\u1eadt ho\u1eb7c l\u1ed7i ch\u00e8n d\u1eef li\u1ec7u). C\u1ea5p \u0111\u1ed9 v\u1eadt l\u00fd: \u1ede c\u1ea5p \u0111\u1ed9 v\u1eadt l\u00fd, b\u1ea1n t\u1eadp trung v\u00e0o vi\u1ec7c tri\u1ec3n khai th\u1ef1c t\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u tr\u00ean m\u1ed9t h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee5 th\u1ec3 (DBMS). C\u1ea5p \u0111\u1ed9 n\u00e0y bao g\u1ed3m c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 l\u1eadp ch\u1ec9 m\u1ee5c, t\u1ed1i \u01b0u h\u00f3a l\u01b0u tr\u1eef v\u00e0 c\u00e1c quy\u1ebft \u0111\u1ecbnh li\u00ean quan \u0111\u1ebfn ph\u1ea7n c\u1ee9ng. M\u1eb7c d\u00f9 c\u00e1c nguy\u00ean t\u1eafc chu\u1ea9n h\u00f3a v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y, nh\u01b0ng tr\u1ecdng t\u00e2m chuy\u1ec3n sang t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 l\u01b0u tr\u1eef. Vi\u1ec7c phi chu\u1ea9n h\u00f3a, t\u1ee9c l\u00e0 ch\u1ee7 \u00fd t\u1ea1o ra m\u1ed9t m\u1ee9c \u0111\u1ed9 tr\u00f9ng l\u1eb7p nh\u1ea5t \u0111\u1ecbnh nh\u1eb1m c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t, c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xem x\u00e9t \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y. V\u1ec1 vi\u1ec7c b\u1ea1n c\u00f3 lu\u00f4n c\u1ea7n th\u1ef1c hi\u1ec7n chu\u1ea9n h\u00f3a hay kh\u00f4ng, \u0111i\u1ec1u \u0111\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c y\u00eau c\u1ea7u v\u00e0 r\u00e0ng bu\u1ed9c c\u1ee5 th\u1ec3 c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. Chu\u1ea9n h\u00f3a l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c nguy\u00ean t\u1eafc, ch\u1ee7 y\u1ebfu d\u1ef1a tr\u00ean c\u00e1c d\u1ea1ng chu\u1ea9n h\u00f3a (1NF, 2NF, 3NF, BCNF, v.v.), gi\u00fap c\u1ea5u tr\u00fac h\u00f3a d\u1eef li\u1ec7u \u0111\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng l\u1eb7p v\u00e0 l\u1ed7i. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u giao d\u1ecbch, n\u01a1i t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. Tuy nhi\u00ean, trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ee7 \u00fd phi chu\u1ea9n h\u00f3a d\u1eef li\u1ec7u v\u00ec l\u00fd do hi\u1ec7u su\u1ea5t, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u kho d\u1eef li\u1ec7u ho\u1eb7c c\u01a1 s\u1edf d\u1eef li\u1ec7u b\u00e1o c\u00e1o. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m vi\u1ec7c ch\u1ea5p nh\u1eadn m\u1ed9t m\u1ee9c \u0111\u1ed9 tr\u00f9ng l\u1eb7p nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 \u0111\u1ed5i l\u1ea5y hi\u1ec7u su\u1ea5t truy v\u1ea5n nhanh h\u01a1n. Quy\u1ebft \u0111\u1ecbnh chu\u1ea9n h\u00f3a hay phi chu\u1ea9n h\u00f3a c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u01b0a ra d\u1ef1a tr\u00ean c\u00e1c nhu c\u1ea7u c\u1ee5 th\u1ec3 v\u00e0 c\u00e1c th\u1ecfa hi\u1ec7p trong \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. Chu\u1ea9n h\u00f3a th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u1ea5p \u0111\u1ed9 logic c\u1ee7a ERD \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ed5 ch\u1ee9c d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 v\u00e0 t\u00ednh to\u00e0n v\u1eb9n, nh\u01b0ng \u0111i\u1ec1u \u0111\u00f3 kh\u00f4ng nh\u1ea5t thi\u1ebft lu\u00f4n c\u1ea7n thi\u1ebft, t\u00f9y thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u c\u1ee7a \u1ee9ng d\u1ee5ng v\u00e0 m\u1ee5c ti\u00eau thi\u1ebft k\u1ebf \u1edf c\u1ea5p \u0111\u1ed9 v\u1eadt l\u00fd. Chu\u1ea9n h\u00f3a hay phi chu\u1ea9n h\u00f3a, khi n\u00e0o v\u00e0 v\u00ec sao? Chu\u1ea9n h\u00f3a v\u00e0 phi chu\u1ea9n h\u00f3a l\u00e0 hai chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ed1i l\u1eadp trong vi\u1ec7c t\u1ed5 ch\u1ee9c d\u1eef li\u1ec7u trong c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7, v\u00e0 vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa ch\u00fang ph\u1ee5 thu\u1ed9c v\u00e0o nhu c\u1ea7u v\u00e0 m\u1ee5c ti\u00eau c\u1ee5 th\u1ec3 c\u1ee7a \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 so s\u00e1nh v\u1ec1 khi n\u00e0o v\u00e0 v\u00ec sao b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn chu\u1ea9n h\u00f3a ho\u1eb7c phi chu\u1ea9n h\u00f3a c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh: Chu\u1ea9n h\u00f3a: Khi n\u00e0o n\u00ean chu\u1ea9n h\u00f3a: S\u1eed d\u1ee5ng chu\u1ea9n h\u00f3a khi t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u l\u00e0 \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u, v\u00e0 b\u1ea1n mu\u1ed1n gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng l\u1eb7p d\u1eef li\u1ec7u c\u0169ng nh\u01b0 tr\u00e1nh c\u00e1c l\u1ed7i (l\u1ed7i ch\u00e8n, l\u1ed7i c\u1eadp nh\u1eadt v\u00e0 l\u1ed7i x\u00f3a d\u1eef li\u1ec7u). \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u giao d\u1ecbch, n\u01a1i \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n d\u1eef li\u1ec7u l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. T\u1ea1i sao n\u00ean chu\u1ea9n h\u00f3a: Gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng<a href=\"https:\/\/guides.visual-paradigm.com\/vn\/balancing-data-integrity-and-performance-normalization-vs-denormalization-in-database-design\/\" rel=\"bookmark\"><span class=\"screen-reader-text\">C\u00e2n b\u1eb1ng t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t: Chu\u1ea9n h\u00f3a so v\u1edbi phi chu\u1ea9n h\u00f3a trong thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_eb_attr":"","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[17],"tags":[],"class_list":["post-6443","post","type-post","status-publish","format-standard","hentry","category-data-modeling-database"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>C\u00e2n b\u1eb1ng t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t: Chu\u1ea9n h\u00f3a so v\u1edbi phi chu\u1ea9n h\u00f3a trong thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u - Visual Paradigm Guides Vietnamese<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/guides.visual-paradigm.com\/vn\/balancing-data-integrity-and-performance-normalization-vs-denormalization-in-database-design\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00e2n b\u1eb1ng t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t: Chu\u1ea9n h\u00f3a so v\u1edbi phi chu\u1ea9n h\u00f3a trong thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u - Visual Paradigm Guides Vietnamese\" \/>\n<meta property=\"og:description\" content=\"Gi\u1edbi thi\u1ec7u Trong l\u0129nh v\u1ef1c thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u, vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa chu\u1ea9n h\u00f3a v\u00e0 phi chu\u1ea9n h\u00f3a l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh then ch\u1ed1t c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n. D\u00f9 b\u1ea1n \u0111ang thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u cho m\u1ed9t n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, m\u1ed9t t\u1ed5 ch\u1ee9c t\u00e0i ch\u00ednh hay b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng n\u00e0o kh\u00e1c, vi\u1ec7c t\u00ecm ra s\u1ef1 c\u00e2n b\u1eb1ng ph\u00f9 h\u1ee3p gi\u1eefa t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t truy v\u1ea5n l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu cho th\u00e0nh c\u00f4ng. B\u00e0i vi\u1ebft n\u00e0y kh\u00e1m ph\u00e1 c\u00e1c nguy\u00ean t\u1eafc c\u1ee7a chu\u1ea9n h\u00f3a v\u00e0 phi chu\u1ea9n h\u00f3a, l\u00e0m r\u00f5 khi n\u00e0o v\u00e0 t\u1ea1i sao b\u1ea1n n\u00ean ch\u1ecdn m\u1ed7i ph\u01b0\u01a1ng ph\u00e1p. Th\u00f4ng qua c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n c\u00e2n nh\u1eafc, ch\u00fang t\u00f4i s\u1ebd d\u1eabn d\u1eaft b\u1ea1n qua b\u1ee9c tranh ph\u1ee9c t\u1ea1p c\u1ee7a thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec3 gi\u00fap b\u1ea1n \u0111\u01b0a ra nh\u1eefng quy\u1ebft \u0111\u1ecbnh th\u00f4ng th\u00e1i ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u ri\u00eang bi\u1ec7t c\u1ee7a d\u1ef1 \u00e1n. Chu\u1ea9n h\u00f3a trong thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 g\u00ec Chu\u1ea9n h\u00f3a th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u1ea5p \u0111\u1ed9 thi\u1ebft k\u1ebf logic c\u1ee7a s\u01a1 \u0111\u1ed3 Entiti-Quan h\u1ec7 (ERD), c\u1ee5 th\u1ec3 trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u. H\u00e3y c\u00f9ng ph\u00e2n t\u00edch m\u1ed1i quan h\u1ec7 gi\u1eefa chu\u1ea9n h\u00f3a v\u00e0 c\u00e1c c\u1ea5p \u0111\u1ed9 kh\u00e1c nhau c\u1ee7a ERD (kh\u00e1i ni\u1ec7m, logic v\u00e0 v\u1eadt l\u00fd): C\u1ea5p \u0111\u1ed9 kh\u00e1i ni\u1ec7m: \u1ede c\u1ea5p \u0111\u1ed9 kh\u00e1i ni\u1ec7m c\u1ee7a ERD, b\u1ea1n t\u1eadp trung v\u00e0o m\u00f4 h\u00ecnh h\u00f3a c\u1ea5p cao c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng \u0111i s\u00e2u v\u00e0o chi ti\u1ebft thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u. B\u1ea1n x\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3, thu\u1ed9c t\u00ednh c\u1ee7a ch\u00fang v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang, th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u nh\u01b0 s\u01a1 \u0111\u1ed3 Entiti-Quan h\u1ec7 ho\u1eb7c c\u00e1c s\u01a1 \u0111\u1ed3 c\u1ea5p cao kh\u00e1c. Chu\u1ea9n h\u00f3a th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y, v\u00ec n\u00f3 li\u00ean quan \u0111\u1ebfn t\u1ed5 ch\u1ee9c d\u1eef li\u1ec7u chi ti\u1ebft, v\u01b0\u1ee3t ra ngo\u00e0i ph\u1ea1m vi c\u1ee7a m\u00f4 h\u00ecnh kh\u00e1i ni\u1ec7m. C\u1ea5p \u0111\u1ed9 logic: C\u1ea5p \u0111\u1ed9 logic c\u1ee7a ERD l\u00e0 n\u01a1i b\u1ea1n b\u1eaft \u0111\u1ea7u chuy\u1ec3n \u0111\u1ed5i c\u00e1c kh\u00e1i ni\u1ec7m c\u1ea5p cao t\u1eeb m\u00f4 h\u00ecnh kh\u00e1i ni\u1ec7m th\u00e0nh m\u1ed9t m\u00f4 h\u00ecnh d\u1eef li\u1ec7u chi ti\u1ebft h\u01a1n cho c\u01a1 s\u1edf d\u1eef li\u1ec7u. B\u1ea1n x\u00e1c \u0111\u1ecbnh c\u00e1c b\u1ea3ng, c\u1ed9t, ki\u1ec3u d\u1eef li\u1ec7u, kh\u00f3a ch\u00ednh, kh\u00f3a ngo\u1ea1i v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c b\u1ea3ng. Chu\u1ea9n h\u00f3a th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng nhi\u1ec1u nh\u1ea5t \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y. M\u1ee5c ti\u00eau c\u1ee7a chu\u1ea9n h\u00f3a l\u00e0 \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c hi\u1ec7u qu\u1ea3, t\u1ed1i thi\u1ec3u h\u00f3a s\u1ef1 tr\u00f9ng l\u1eb7p v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro x\u1ea3y ra l\u1ed7i d\u1eef li\u1ec7u (nh\u01b0 l\u1ed7i c\u1eadp nh\u1eadt ho\u1eb7c l\u1ed7i ch\u00e8n d\u1eef li\u1ec7u). C\u1ea5p \u0111\u1ed9 v\u1eadt l\u00fd: \u1ede c\u1ea5p \u0111\u1ed9 v\u1eadt l\u00fd, b\u1ea1n t\u1eadp trung v\u00e0o vi\u1ec7c tri\u1ec3n khai th\u1ef1c t\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u tr\u00ean m\u1ed9t h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee5 th\u1ec3 (DBMS). C\u1ea5p \u0111\u1ed9 n\u00e0y bao g\u1ed3m c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 l\u1eadp ch\u1ec9 m\u1ee5c, t\u1ed1i \u01b0u h\u00f3a l\u01b0u tr\u1eef v\u00e0 c\u00e1c quy\u1ebft \u0111\u1ecbnh li\u00ean quan \u0111\u1ebfn ph\u1ea7n c\u1ee9ng. M\u1eb7c d\u00f9 c\u00e1c nguy\u00ean t\u1eafc chu\u1ea9n h\u00f3a v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y, nh\u01b0ng tr\u1ecdng t\u00e2m chuy\u1ec3n sang t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 l\u01b0u tr\u1eef. Vi\u1ec7c phi chu\u1ea9n h\u00f3a, t\u1ee9c l\u00e0 ch\u1ee7 \u00fd t\u1ea1o ra m\u1ed9t m\u1ee9c \u0111\u1ed9 tr\u00f9ng l\u1eb7p nh\u1ea5t \u0111\u1ecbnh nh\u1eb1m c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t, c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xem x\u00e9t \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y. V\u1ec1 vi\u1ec7c b\u1ea1n c\u00f3 lu\u00f4n c\u1ea7n th\u1ef1c hi\u1ec7n chu\u1ea9n h\u00f3a hay kh\u00f4ng, \u0111i\u1ec1u \u0111\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c y\u00eau c\u1ea7u v\u00e0 r\u00e0ng bu\u1ed9c c\u1ee5 th\u1ec3 c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. Chu\u1ea9n h\u00f3a l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c nguy\u00ean t\u1eafc, ch\u1ee7 y\u1ebfu d\u1ef1a tr\u00ean c\u00e1c d\u1ea1ng chu\u1ea9n h\u00f3a (1NF, 2NF, 3NF, BCNF, v.v.), gi\u00fap c\u1ea5u tr\u00fac h\u00f3a d\u1eef li\u1ec7u \u0111\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng l\u1eb7p v\u00e0 l\u1ed7i. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u giao d\u1ecbch, n\u01a1i t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. Tuy nhi\u00ean, trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ee7 \u00fd phi chu\u1ea9n h\u00f3a d\u1eef li\u1ec7u v\u00ec l\u00fd do hi\u1ec7u su\u1ea5t, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u kho d\u1eef li\u1ec7u ho\u1eb7c c\u01a1 s\u1edf d\u1eef li\u1ec7u b\u00e1o c\u00e1o. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m vi\u1ec7c ch\u1ea5p nh\u1eadn m\u1ed9t m\u1ee9c \u0111\u1ed9 tr\u00f9ng l\u1eb7p nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 \u0111\u1ed5i l\u1ea5y hi\u1ec7u su\u1ea5t truy v\u1ea5n nhanh h\u01a1n. Quy\u1ebft \u0111\u1ecbnh chu\u1ea9n h\u00f3a hay phi chu\u1ea9n h\u00f3a c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u01b0a ra d\u1ef1a tr\u00ean c\u00e1c nhu c\u1ea7u c\u1ee5 th\u1ec3 v\u00e0 c\u00e1c th\u1ecfa hi\u1ec7p trong \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. Chu\u1ea9n h\u00f3a th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u1ea5p \u0111\u1ed9 logic c\u1ee7a ERD \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ed5 ch\u1ee9c d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 v\u00e0 t\u00ednh to\u00e0n v\u1eb9n, nh\u01b0ng \u0111i\u1ec1u \u0111\u00f3 kh\u00f4ng nh\u1ea5t thi\u1ebft lu\u00f4n c\u1ea7n thi\u1ebft, t\u00f9y thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u c\u1ee7a \u1ee9ng d\u1ee5ng v\u00e0 m\u1ee5c ti\u00eau thi\u1ebft k\u1ebf \u1edf c\u1ea5p \u0111\u1ed9 v\u1eadt l\u00fd. Chu\u1ea9n h\u00f3a hay phi chu\u1ea9n h\u00f3a, khi n\u00e0o v\u00e0 v\u00ec sao? Chu\u1ea9n h\u00f3a v\u00e0 phi chu\u1ea9n h\u00f3a l\u00e0 hai chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ed1i l\u1eadp trong vi\u1ec7c t\u1ed5 ch\u1ee9c d\u1eef li\u1ec7u trong c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7, v\u00e0 vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa ch\u00fang ph\u1ee5 thu\u1ed9c v\u00e0o nhu c\u1ea7u v\u00e0 m\u1ee5c ti\u00eau c\u1ee5 th\u1ec3 c\u1ee7a \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 so s\u00e1nh v\u1ec1 khi n\u00e0o v\u00e0 v\u00ec sao b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn chu\u1ea9n h\u00f3a ho\u1eb7c phi chu\u1ea9n h\u00f3a c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh: Chu\u1ea9n h\u00f3a: Khi n\u00e0o n\u00ean chu\u1ea9n h\u00f3a: S\u1eed d\u1ee5ng chu\u1ea9n h\u00f3a khi t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u l\u00e0 \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u, v\u00e0 b\u1ea1n mu\u1ed1n gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng l\u1eb7p d\u1eef li\u1ec7u c\u0169ng nh\u01b0 tr\u00e1nh c\u00e1c l\u1ed7i (l\u1ed7i ch\u00e8n, l\u1ed7i c\u1eadp nh\u1eadt v\u00e0 l\u1ed7i x\u00f3a d\u1eef li\u1ec7u). \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u giao d\u1ecbch, n\u01a1i \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n d\u1eef li\u1ec7u l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. 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Visual Paradigm Guides Vietnamese","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/guides.visual-paradigm.com\/vn\/balancing-data-integrity-and-performance-normalization-vs-denormalization-in-database-design\/","og_locale":"vi_VN","og_type":"article","og_title":"C\u00e2n b\u1eb1ng t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t: Chu\u1ea9n h\u00f3a so v\u1edbi phi chu\u1ea9n h\u00f3a trong thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u - Visual Paradigm Guides Vietnamese","og_description":"Gi\u1edbi thi\u1ec7u Trong l\u0129nh v\u1ef1c thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u, vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa chu\u1ea9n h\u00f3a v\u00e0 phi chu\u1ea9n h\u00f3a l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh then ch\u1ed1t c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n. D\u00f9 b\u1ea1n \u0111ang thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u cho m\u1ed9t n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, m\u1ed9t t\u1ed5 ch\u1ee9c t\u00e0i ch\u00ednh hay b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng n\u00e0o kh\u00e1c, vi\u1ec7c t\u00ecm ra s\u1ef1 c\u00e2n b\u1eb1ng ph\u00f9 h\u1ee3p gi\u1eefa t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t truy v\u1ea5n l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu cho th\u00e0nh c\u00f4ng. B\u00e0i vi\u1ebft n\u00e0y kh\u00e1m ph\u00e1 c\u00e1c nguy\u00ean t\u1eafc c\u1ee7a chu\u1ea9n h\u00f3a v\u00e0 phi chu\u1ea9n h\u00f3a, l\u00e0m r\u00f5 khi n\u00e0o v\u00e0 t\u1ea1i sao b\u1ea1n n\u00ean ch\u1ecdn m\u1ed7i ph\u01b0\u01a1ng ph\u00e1p. Th\u00f4ng qua c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n c\u00e2n nh\u1eafc, ch\u00fang t\u00f4i s\u1ebd d\u1eabn d\u1eaft b\u1ea1n qua b\u1ee9c tranh ph\u1ee9c t\u1ea1p c\u1ee7a thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec3 gi\u00fap b\u1ea1n \u0111\u01b0a ra nh\u1eefng quy\u1ebft \u0111\u1ecbnh th\u00f4ng th\u00e1i ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u ri\u00eang bi\u1ec7t c\u1ee7a d\u1ef1 \u00e1n. Chu\u1ea9n h\u00f3a trong thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 g\u00ec Chu\u1ea9n h\u00f3a th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u1ea5p \u0111\u1ed9 thi\u1ebft k\u1ebf logic c\u1ee7a s\u01a1 \u0111\u1ed3 Entiti-Quan h\u1ec7 (ERD), c\u1ee5 th\u1ec3 trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u. H\u00e3y c\u00f9ng ph\u00e2n t\u00edch m\u1ed1i quan h\u1ec7 gi\u1eefa chu\u1ea9n h\u00f3a v\u00e0 c\u00e1c c\u1ea5p \u0111\u1ed9 kh\u00e1c nhau c\u1ee7a ERD (kh\u00e1i ni\u1ec7m, logic v\u00e0 v\u1eadt l\u00fd): C\u1ea5p \u0111\u1ed9 kh\u00e1i ni\u1ec7m: \u1ede c\u1ea5p \u0111\u1ed9 kh\u00e1i ni\u1ec7m c\u1ee7a ERD, b\u1ea1n t\u1eadp trung v\u00e0o m\u00f4 h\u00ecnh h\u00f3a c\u1ea5p cao c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng \u0111i s\u00e2u v\u00e0o chi ti\u1ebft thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u. B\u1ea1n x\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3, thu\u1ed9c t\u00ednh c\u1ee7a ch\u00fang v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang, th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u nh\u01b0 s\u01a1 \u0111\u1ed3 Entiti-Quan h\u1ec7 ho\u1eb7c c\u00e1c s\u01a1 \u0111\u1ed3 c\u1ea5p cao kh\u00e1c. Chu\u1ea9n h\u00f3a th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y, v\u00ec n\u00f3 li\u00ean quan \u0111\u1ebfn t\u1ed5 ch\u1ee9c d\u1eef li\u1ec7u chi ti\u1ebft, v\u01b0\u1ee3t ra ngo\u00e0i ph\u1ea1m vi c\u1ee7a m\u00f4 h\u00ecnh kh\u00e1i ni\u1ec7m. C\u1ea5p \u0111\u1ed9 logic: C\u1ea5p \u0111\u1ed9 logic c\u1ee7a ERD l\u00e0 n\u01a1i b\u1ea1n b\u1eaft \u0111\u1ea7u chuy\u1ec3n \u0111\u1ed5i c\u00e1c kh\u00e1i ni\u1ec7m c\u1ea5p cao t\u1eeb m\u00f4 h\u00ecnh kh\u00e1i ni\u1ec7m th\u00e0nh m\u1ed9t m\u00f4 h\u00ecnh d\u1eef li\u1ec7u chi ti\u1ebft h\u01a1n cho c\u01a1 s\u1edf d\u1eef li\u1ec7u. B\u1ea1n x\u00e1c \u0111\u1ecbnh c\u00e1c b\u1ea3ng, c\u1ed9t, ki\u1ec3u d\u1eef li\u1ec7u, kh\u00f3a ch\u00ednh, kh\u00f3a ngo\u1ea1i v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c b\u1ea3ng. Chu\u1ea9n h\u00f3a th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng nhi\u1ec1u nh\u1ea5t \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y. M\u1ee5c ti\u00eau c\u1ee7a chu\u1ea9n h\u00f3a l\u00e0 \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c hi\u1ec7u qu\u1ea3, t\u1ed1i thi\u1ec3u h\u00f3a s\u1ef1 tr\u00f9ng l\u1eb7p v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro x\u1ea3y ra l\u1ed7i d\u1eef li\u1ec7u (nh\u01b0 l\u1ed7i c\u1eadp nh\u1eadt ho\u1eb7c l\u1ed7i ch\u00e8n d\u1eef li\u1ec7u). C\u1ea5p \u0111\u1ed9 v\u1eadt l\u00fd: \u1ede c\u1ea5p \u0111\u1ed9 v\u1eadt l\u00fd, b\u1ea1n t\u1eadp trung v\u00e0o vi\u1ec7c tri\u1ec3n khai th\u1ef1c t\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u tr\u00ean m\u1ed9t h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee5 th\u1ec3 (DBMS). C\u1ea5p \u0111\u1ed9 n\u00e0y bao g\u1ed3m c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 l\u1eadp ch\u1ec9 m\u1ee5c, t\u1ed1i \u01b0u h\u00f3a l\u01b0u tr\u1eef v\u00e0 c\u00e1c quy\u1ebft \u0111\u1ecbnh li\u00ean quan \u0111\u1ebfn ph\u1ea7n c\u1ee9ng. M\u1eb7c d\u00f9 c\u00e1c nguy\u00ean t\u1eafc chu\u1ea9n h\u00f3a v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y, nh\u01b0ng tr\u1ecdng t\u00e2m chuy\u1ec3n sang t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 l\u01b0u tr\u1eef. Vi\u1ec7c phi chu\u1ea9n h\u00f3a, t\u1ee9c l\u00e0 ch\u1ee7 \u00fd t\u1ea1o ra m\u1ed9t m\u1ee9c \u0111\u1ed9 tr\u00f9ng l\u1eb7p nh\u1ea5t \u0111\u1ecbnh nh\u1eb1m c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t, c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xem x\u00e9t \u1edf c\u1ea5p \u0111\u1ed9 n\u00e0y. V\u1ec1 vi\u1ec7c b\u1ea1n c\u00f3 lu\u00f4n c\u1ea7n th\u1ef1c hi\u1ec7n chu\u1ea9n h\u00f3a hay kh\u00f4ng, \u0111i\u1ec1u \u0111\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c y\u00eau c\u1ea7u v\u00e0 r\u00e0ng bu\u1ed9c c\u1ee5 th\u1ec3 c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. Chu\u1ea9n h\u00f3a l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c nguy\u00ean t\u1eafc, ch\u1ee7 y\u1ebfu d\u1ef1a tr\u00ean c\u00e1c d\u1ea1ng chu\u1ea9n h\u00f3a (1NF, 2NF, 3NF, BCNF, v.v.), gi\u00fap c\u1ea5u tr\u00fac h\u00f3a d\u1eef li\u1ec7u \u0111\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng l\u1eb7p v\u00e0 l\u1ed7i. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u giao d\u1ecbch, n\u01a1i t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. Tuy nhi\u00ean, trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ee7 \u00fd phi chu\u1ea9n h\u00f3a d\u1eef li\u1ec7u v\u00ec l\u00fd do hi\u1ec7u su\u1ea5t, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u kho d\u1eef li\u1ec7u ho\u1eb7c c\u01a1 s\u1edf d\u1eef li\u1ec7u b\u00e1o c\u00e1o. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m vi\u1ec7c ch\u1ea5p nh\u1eadn m\u1ed9t m\u1ee9c \u0111\u1ed9 tr\u00f9ng l\u1eb7p nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 \u0111\u1ed5i l\u1ea5y hi\u1ec7u su\u1ea5t truy v\u1ea5n nhanh h\u01a1n. Quy\u1ebft \u0111\u1ecbnh chu\u1ea9n h\u00f3a hay phi chu\u1ea9n h\u00f3a c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u01b0a ra d\u1ef1a tr\u00ean c\u00e1c nhu c\u1ea7u c\u1ee5 th\u1ec3 v\u00e0 c\u00e1c th\u1ecfa hi\u1ec7p trong \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. Chu\u1ea9n h\u00f3a th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf c\u1ea5p \u0111\u1ed9 logic c\u1ee7a ERD \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ed5 ch\u1ee9c d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 v\u00e0 t\u00ednh to\u00e0n v\u1eb9n, nh\u01b0ng \u0111i\u1ec1u \u0111\u00f3 kh\u00f4ng nh\u1ea5t thi\u1ebft lu\u00f4n c\u1ea7n thi\u1ebft, t\u00f9y thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u c\u1ee7a \u1ee9ng d\u1ee5ng v\u00e0 m\u1ee5c ti\u00eau thi\u1ebft k\u1ebf \u1edf c\u1ea5p \u0111\u1ed9 v\u1eadt l\u00fd. Chu\u1ea9n h\u00f3a hay phi chu\u1ea9n h\u00f3a, khi n\u00e0o v\u00e0 v\u00ec sao? Chu\u1ea9n h\u00f3a v\u00e0 phi chu\u1ea9n h\u00f3a l\u00e0 hai chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ed1i l\u1eadp trong vi\u1ec7c t\u1ed5 ch\u1ee9c d\u1eef li\u1ec7u trong c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7, v\u00e0 vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa ch\u00fang ph\u1ee5 thu\u1ed9c v\u00e0o nhu c\u1ea7u v\u00e0 m\u1ee5c ti\u00eau c\u1ee5 th\u1ec3 c\u1ee7a \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 so s\u00e1nh v\u1ec1 khi n\u00e0o v\u00e0 v\u00ec sao b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn chu\u1ea9n h\u00f3a ho\u1eb7c phi chu\u1ea9n h\u00f3a c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh: Chu\u1ea9n h\u00f3a: Khi n\u00e0o n\u00ean chu\u1ea9n h\u00f3a: S\u1eed d\u1ee5ng chu\u1ea9n h\u00f3a khi t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u l\u00e0 \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u, v\u00e0 b\u1ea1n mu\u1ed1n gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng l\u1eb7p d\u1eef li\u1ec7u c\u0169ng nh\u01b0 tr\u00e1nh c\u00e1c l\u1ed7i (l\u1ed7i ch\u00e8n, l\u1ed7i c\u1eadp nh\u1eadt v\u00e0 l\u1ed7i x\u00f3a d\u1eef li\u1ec7u). \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u giao d\u1ecbch, n\u01a1i \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n d\u1eef li\u1ec7u l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. T\u1ea1i sao n\u00ean chu\u1ea9n h\u00f3a: Gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ngC\u00e2n b\u1eb1ng t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t: Chu\u1ea9n h\u00f3a so v\u1edbi phi chu\u1ea9n h\u00f3a trong thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u","og_url":"https:\/\/guides.visual-paradigm.com\/vn\/balancing-data-integrity-and-performance-normalization-vs-denormalization-in-database-design\/","og_site_name":"Visual Paradigm Guides Vietnamese","article_published_time":"2026-02-04T12:20:45+00:00","og_image":[{"width":416,"height":280,"url":"https:\/\/guides.visual-paradigm.com\/vn\/wp-content\/uploads\/sites\/10\/2023\/09\/img_65086cc1d7982.png","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_misc":{"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi":"vpadmin","\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"9 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/guides.visual-paradigm.com\/vn\/balancing-data-integrity-and-performance-normalization-vs-denormalization-in-database-design\/#article","isPartOf":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/balancing-data-integrity-and-performance-normalization-vs-denormalization-in-database-design\/"},"headline":"C\u00e2n b\u1eb1ng t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t: Chu\u1ea9n h\u00f3a so v\u1edbi phi chu\u1ea9n h\u00f3a trong thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u","datePublished":"2026-02-04T12:20:45+00:00","mainEntityOfPage":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/balancing-data-integrity-and-performance-normalization-vs-denormalization-in-database-design\/"},"wordCount":4974,"commentCount":0,"image":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/balancing-data-integrity-and-performance-normalization-vs-denormalization-in-database-design\/#primaryimage"},"thumbnailUrl":"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/09\/img_65086cc1d7982.png","articleSection":["Data Modeling \/ Database"],"inLanguage":"vi","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/guides.visual-paradigm.com\/vn\/balancing-data-integrity-and-performance-normalization-vs-denormalization-in-database-design\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/guides.visual-paradigm.com\/vn\/balancing-data-integrity-and-performance-normalization-vs-denormalization-in-database-design\/","url":"https:\/\/guides.visual-paradigm.com\/vn\/balancing-data-integrity-and-performance-normalization-vs-denormalization-in-database-design\/","name":"C\u00e2n b\u1eb1ng t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 hi\u1ec7u su\u1ea5t: Chu\u1ea9n h\u00f3a so v\u1edbi phi chu\u1ea9n h\u00f3a trong thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u - 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