{"id":68323,"date":"2024-05-22T09:12:24","date_gmt":"2024-05-22T02:12:24","guid":{"rendered":"https:\/\/itviec.com\/blog\/?p=68323"},"modified":"2024-05-22T09:12:24","modified_gmt":"2024-05-22T02:12:24","slug":"mo-hinh-du-lieu-la-gi","status":"publish","type":"post","link":"https:\/\/itviec.com\/blog\/mo-hinh-du-lieu-la-gi\/","title":{"rendered":"M\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec? 5 b\u01b0\u1edbc m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u ph\u1ed5 bi\u1ebfn"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed9i dung b\u00e0i vi\u1ebft<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/itviec.com\/blog\/mo-hinh-du-lieu-la-gi\/#Mo_hinh_du_lieu_la_gi\" >M\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/itviec.com\/blog\/mo-hinh-du-lieu-la-gi\/#Cong_dung_va_ung_dung_cua_mo_hinh_du_lieu_la_gi\" >C\u00f4ng d\u1ee5ng v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/itviec.com\/blog\/mo-hinh-du-lieu-la-gi\/#Cac_thanh_phan_chinh_cua_mo_hinh_du_lieu_la_gi\" >C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/itviec.com\/blog\/mo-hinh-du-lieu-la-gi\/#Cac_loai_mo_hinh_du_lieu_co_ban\" >C\u00e1c lo\u1ea1i m\u00f4 h\u00ecnh d\u1eef li\u1ec7u c\u01a1 b\u1ea3n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/itviec.com\/blog\/mo-hinh-du-lieu-la-gi\/#Mo_hinh_hoa_du_lieu_la_gi\" >M\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/itviec.com\/blog\/mo-hinh-du-lieu-la-gi\/#Cac_cach_mo_hinh_hoa_du_lieu\" >C\u00e1c c\u00e1ch m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/itviec.com\/blog\/mo-hinh-du-lieu-la-gi\/#Cac_buoc_mo_hinh_hoa_du_lieu\" >C\u00e1c b\u01b0\u1edbc m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/itviec.com\/blog\/mo-hinh-du-lieu-la-gi\/#10_sai_lam_thuong_gap_khi_su_dung_mo_hinh_du_lieu\" >10 sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p khi s\u1eed d\u1ee5ng m\u00f4 h\u00ecnh d\u1eef li\u1ec7u<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/itviec.com\/blog\/mo-hinh-du-lieu-la-gi\/#Cau_hoi_thuong_gap_ve_mo_hinh_du_lieu\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 m\u00f4 h\u00ecnh d\u1eef li\u1ec7u<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/itviec.com\/blog\/mo-hinh-du-lieu-la-gi\/#Tong_ket_mo_hinh_du_lieu_la_gi\" >T\u1ed5ng k\u1ebft m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec<\/a><\/li><\/ul><\/nav><\/div>\n<p><em><strong>Trong th\u1ebf gi\u1edbi s\u1ed1 h\u00f3a ng\u00e0y nay, d\u1eef li\u1ec7u l\u00e0 m\u1ed9t t\u00e0i nguy\u00ean v\u00f4 c\u00f9ng qu\u00fd gi\u00e1, vi\u1ec7c hi\u1ec3u v\u00e0 qu\u1ea3n l\u00fd d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 l\u00e0 ch\u00eca kh\u00f3a cho s\u1ef1 th\u00e0nh c\u00f4ng c\u1ee7a m\u1ecdi doanh nghi\u1ec7p. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd \u0111i s\u00e2u v\u00e0o kh\u00e1i ni\u1ec7m m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec, t\u1ea1i sao n\u00f3 quan tr\u1ecdng v\u00e0 c\u00e1ch th\u1ee9c x\u00e2y d\u1ef1ng m\u1ed9t m\u00f4 h\u00ecnh d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3.<\/strong><\/em><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u1ecdc b\u00e0i vi\u1ebft n\u00e0y \u0111\u1ec3 hi\u1ec3u r\u00f5:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e1c b\u01b0\u1edbc m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Mo_hinh_du_lieu_la_gi\"><\/span><b>M\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 tr\u1eebu t\u01b0\u1ee3ng h\u00f3a, m\u00f4 t\u1ea3 c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c v\u00e0 qu\u1ea3n l\u00fd trong h\u1ec7 th\u1ed1ng th\u00f4ng tin. N\u00f3 ph\u1ea3n \u00e1nh c\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n d\u1eef li\u1ec7u t\u01b0\u01a1ng t\u00e1c v\u00e0 t\u1ed5 ch\u1ee9c trong h\u1ec7 th\u1ed1ng th\u00f4ng qua nh\u1eefng quy \u01b0\u1edbc v\u00e0 k\u00fd hi\u1ec7u, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t s\u01a1 \u0111\u1ed3 gi\u00fap x\u00e1c \u0111\u1ecbnh c\u1ea5u tr\u00fac v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 kho d\u1eef li\u1ec7u, \u0111i\u1ec1u n\u00e0y gi\u00fap qu\u1ea3n l\u00fd d\u1eef li\u1ec7u cho vi\u1ec7c x\u1eed l\u00fd ph\u00e2n t\u00edch v\u00e0 tri\u1ec3n khai c\u00e1c \u1ee9ng d\u1ee5ng. Qua \u0111\u00f3, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 truy c\u1eadp th\u00f4ng tin m\u1ed9t c\u00e1ch c\u00f3 \u00fd ngh\u0129a v\u00e0 hi\u1ec7u qu\u1ea3.<\/span><\/p>\n<blockquote><p><em>\u0110\u1ecdc th\u00eam: <a href=\"https:\/\/itviec.com\/blog\/co-so-du-lieu-la-gi\/\" target=\"_blank\" rel=\"noopener\"><strong>C\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 g\u00ec: Th\u00e0nh ph\u1ea7n, \u1ee9ng d\u1ee5ng, ph\u00e2n lo\u1ea1i<\/strong><\/a><\/em><\/p><\/blockquote>\n<h2><span class=\"ez-toc-section\" id=\"Cong_dung_va_ung_dung_cua_mo_hinh_du_lieu_la_gi\"><\/span><b>C\u00f4ng d\u1ee5ng v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">\u0110\u1ed1i v\u1edbi doanh nghi\u1ec7p:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>X\u00e2y d\u1ef1ng chi\u1ebfn l\u01b0\u1ee3c kinh doanh<\/b><span style=\"font-weight: 400;\">: M\u00f4 h\u00ecnh d\u1eef li\u1ec7u h\u1ed7 tr\u1ee3 x\u00e2y d\u1ef1ng chi\u1ebfn l\u01b0\u1ee3c kinh doanh d\u1ef1a tr\u00ean d\u1eef li\u1ec7u th\u1ef1c v\u00e0 n\u1eafm b\u1eaft c\u00e1c c\u01a1 h\u1ed9i m\u1edbi trong m\u00f4i tr\u01b0\u1eddng kinh doanh.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0110\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u<\/b><span style=\"font-weight: 400;\">: B\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c d\u1eef li\u1ec7u, m\u00f4 h\u00ecnh d\u1eef li\u1ec7u \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>C\u1ea3i thi\u1ec7n s\u1ef1 h\u1ee3p t\u00e1c v\u00e0 hi\u1ec7u qu\u1ea3 trong giao ti\u1ebfp<\/b><span style=\"font-weight: 400;\">: Thi\u1ebft l\u1eadp c\u1ea5u tr\u00fac v\u00e0 ti\u00eau chu\u1ea9n cho d\u1eef li\u1ec7u gi\u00fap c\u1ea3i thi\u1ec7n s\u1ef1 h\u1ee3p t\u00e1c gi\u1eefa c\u00e1c nh\u00f3m v\u00e0 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho giao ti\u1ebfp hi\u1ec7u qu\u1ea3 h\u01a1n trong t\u1ed5 ch\u1ee9c.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Gi\u1ea3m thi\u1ec3u s\u1ef1 c\u1ed1 v\u00e0 chi ph\u00ed b\u1ea3o tr\u00ec<\/b><span style=\"font-weight: 400;\">: Vi\u1ec7c ki\u1ec3m th\u1eed m\u1ed9t ph\u1ea7n c\u1ee7a m\u00f4 h\u00ecnh d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n gi\u00fap ph\u00e1t hi\u1ec7n s\u1edbm c\u00e1c v\u1ea5n \u0111\u1ec1, gi\u1ea3m thi\u1ec3u chi ph\u00ed v\u00e0 nguy c\u01a1 g\u1eb7p ph\u1ea3i s\u1ef1 c\u1ed1 ho\u1eb7c gi\u00e1n \u0111o\u1ea1n \u0111\u1ed1i v\u1edbi kh\u00e1ch h\u00e0ng.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u0110\u1ed1i v\u1edbi \u1ee9ng d\u1ee5ng:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3<\/b><span style=\"font-weight: 400;\">: M\u00f4 h\u00ecnh d\u1eef li\u1ec7u \u0111\u00f3ng vai tr\u00f2 \u0111\u1ec3 thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 v\u00e0 l\u00e0 m\u1ed9t b\u1ea3n thi\u1ebft k\u1ebf cho vi\u1ec7c ph\u00e1t tri\u1ec3n \u1ee9ng d\u1ee5ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>H\u1ed7 tr\u1ee3 t\u00edch h\u1ee3p d\u1eef li\u1ec7u<\/b><span style=\"font-weight: 400;\">: M\u00f4 h\u00ecnh d\u1eef li\u1ec7u h\u1ed7 tr\u1ee3 t\u00edch h\u1ee3p d\u1eef li\u1ec7u v\u00e0o c\u00e1c gi\u1ea3i ph\u00e1p ph\u1ea7n m\u1ec1m m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>M\u1edf r\u1ed9ng v\u00e0 linh ho\u1ea1t c\u1ee7a h\u1ec7 th\u1ed1ng<\/b><span style=\"font-weight: 400;\">: M\u00f4 h\u00ecnh d\u1eef li\u1ec7u th\u00fac \u0111\u1ea9y s\u1ef1 m\u1edf r\u1ed9ng v\u00e0 linh ho\u1ea1t c\u1ee7a h\u1ec7 th\u1ed1ng, \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n trong bi\u1ec3u di\u1ec5n d\u1eef li\u1ec7u tr\u00ean to\u00e0n t\u1ed5 ch\u1ee9c.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>H\u1ed7 tr\u1ee3 qu\u1ea3n l\u00fd d\u1eef li\u1ec7u v\u00e0 ph\u00e2n t\u00edch<\/b><span style=\"font-weight: 400;\">: M\u00f4 h\u00ecnh d\u1eef li\u1ec7u cung c\u1ea5p c\u01a1 s\u1edf cho vi\u1ec7c ph\u00e2n t\u00edch v\u00e0 b\u00e1o c\u00e1o d\u1eef li\u1ec7u, gi\u00fap hi\u1ec3u r\u00f5 \u00fd ngh\u0129a c\u1ee7a d\u1eef li\u1ec7u v\u00e0 th\u00fac \u0111\u1ea9y c\u00e1c ho\u1ea1t \u0111\u1ed9ng qu\u1ea3n l\u00fd d\u1eef li\u1ec7u, bao g\u1ed3m vi\u1ec7c thi\u1ebft l\u1eadp v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy tr\u00ecnh, ch\u00ednh s\u00e1ch v\u00e0 quy \u0111\u1ecbnh v\u1ec1 d\u1eef li\u1ec7u trong t\u1ed5 ch\u1ee9c.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 m\u00e0 c\u00f2n l\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng quan tr\u1ecdng \u0111\u1ec3 qu\u1ea3n l\u00fd v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Trong th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed:<\/strong> M\u00f4 h\u00ecnh d\u1eef li\u1ec7u gi\u00fap qu\u1ea3n l\u00fd v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u kh\u00e1ch h\u00e0ng, d\u1eef li\u1ec7u b\u00e1n h\u00e0ng, th\u01b0\u01a1ng hi\u1ec7u v\u00e0 nh\u00e0 cung c\u1ea5p. B\u1eb1ng c\u00e1ch n\u00e0y, c\u00e1c doanh nghi\u1ec7p c\u00f3 th\u1ec3 theo d\u00f5i y\u00eau c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng, nh\u1eadn bi\u1ebft xu h\u01b0\u1edbng v\u00e0 t\u1ed1i \u01b0u h\u00f3a c\u1ea5p \u0111\u1ed9 t\u1ed3n kho.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Trong d\u1ecbch v\u1ee5 t\u00e0i ch\u00ednh:<\/strong> M\u00f4 h\u00ecnh d\u1eef li\u1ec7u c\u00f3 th\u1ec3 gi\u00fap c\u00e1c t\u1ed5 ch\u1ee9c t\u00e0i ch\u00ednh \u0111\u00e1nh gi\u00e1 v\u00e0 c\u1ea3i thi\u1ec7n t\u00ecnh h\u00ecnh t\u00e0i ch\u00ednh c\u1ee7a kh\u00e1ch h\u00e0ng, cung c\u1ea5p d\u1eef li\u1ec7u cho c\u00e1c c\u1ed1 v\u1ea5n v\u00e0 nh\u00e0 \u0111\u1ea7u t\u01b0, \u0111\u1ed3ng th\u1eddi gi\u00fap ng\u0103n ch\u1eb7n gian l\u1eadn th\u00f4ng qua vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c quy t\u1eafc v\u00e0 \u0111\u01b0a ra c\u00e1c quy\u1ebft \u0111\u1ecbnh ph\u00f9 h\u1ee3p d\u1ef1a v\u00e0o d\u1eef li\u1ec7u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>\u0110\u1ed1i v\u1edbi \u1ee9ng d\u1ee5ng v\u1ec1 ph\u1ea7n m\u1ec1m:<\/strong> M\u00f4 h\u00ecnh d\u1eef li\u1ec7u gi\u00fap t\u00edch h\u1ee3p ph\u00e2n t\u00edch d\u1eef li\u1ec7u v\u00e0o s\u1ea3n ph\u1ea9m m\u1ed9t c\u00e1ch thu\u1eadn ti\u1ec7n. B\u1eb1ng c\u00e1ch n\u00e0y, d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c v\u00e0 l\u01b0u tr\u1eef trong m\u00f4 h\u00ecnh d\u1eef li\u1ec7u, t\u1eeb \u0111\u00f3 c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi c\u00e1c n\u1ec1n t\u1ea3ng ph\u00e2n t\u00edch v\u00e0 t\u00edch h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c. \u0110i\u1ec1u n\u00e0y t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho vi\u1ec7c th\u1ef1c hi\u1ec7n ph\u00e2n t\u00edch d\u1eef li\u1ec7u tr\u1ef1c ti\u1ebfp trong c\u00e1c \u1ee9ng d\u1ee5ng t\u00f9y ch\u1ec9nh m\u00e0 kh\u00f4ng c\u1ea7n s\u1eed d\u1ee5ng giao di\u1ec7n ph\u00e2n t\u00edch d\u1eef li\u1ec7u ri\u00eang bi\u1ec7t.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Cac_thanh_phan_chinh_cua_mo_hinh_du_lieu_la_gi\"><\/span><b>C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-68329 size-full\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/Mo-hinh-du-lieu-thanh-phan-vippro.png\" alt=\"m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec - itviec blog\" width=\"1894\" height=\"720\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/Mo-hinh-du-lieu-thanh-phan-vippro.png 1894w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/Mo-hinh-du-lieu-thanh-phan-vippro-300x114.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/Mo-hinh-du-lieu-thanh-phan-vippro-1600x608.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/Mo-hinh-du-lieu-thanh-phan-vippro-200x76.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/Mo-hinh-du-lieu-thanh-phan-vippro-100x38.png 100w\" sizes=\"auto, (max-width: 1894px) 100vw, 1894px\" \/><\/p>\n<h3><b>Th\u1ef1c th\u1ec3 (Entity)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Th\u1ef1c th\u1ec3 l\u00e0 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n trong m\u00f4 h\u00ecnh d\u1eef li\u1ec7u v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n \u1edf d\u1ea1ng b\u1ea3ng. V\u00ed d\u1ee5 trong h\u00ecnh tr\u00ean, &#8220;Customer&#8221;, &#8220;Order&#8221; l\u00e0 c\u00e1c th\u1ef1c th\u1ec3.<\/span><\/p>\n<h3><b>Thu\u1ed9c t\u00ednh (Attributes)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Thu\u1ed9c t\u00ednh l\u00e0 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u1ee5 th\u1ec3 c\u1ee7a m\u1ed7i th\u1ef1c th\u1ec3 v\u00e0 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n \u1edf c\u00e1c c\u1ed9t trong b\u1ea3ng. V\u00ed d\u1ee5, &#8220;Order&#8221; c\u00f3 c\u00e1c thu\u1ed9c t\u00ednh nh\u01b0 &#8220;Order_ID&#8221;, &#8220;Order_date&#8221;, &#8220;Customer_ID&#8221;.<\/span><\/p>\n<h3><b>B\u1ea3n ghi (Record)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">B\u1ea3n ghi l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c th\u00f4ng tin c\u1ee5 th\u1ec3 v\u1ec1 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c m\u1ed9t th\u1ef1c th\u1ec3 nh\u1ea5t \u0111\u1ecbnh. N\u00f3 bi\u1ec3u di\u1ec5n m\u1ed9t h\u00e0ng d\u1eef li\u1ec7u duy nh\u1ea5t trong b\u1ea3ng, v\u1edbi m\u1ed7i tr\u01b0\u1eddng trong b\u1ea3n ghi ch\u1ee9a m\u1ed9t gi\u00e1 tr\u1ecb c\u1ee5 th\u1ec3 t\u01b0\u01a1ng \u1ee9ng v\u1edbi thu\u1ed9c t\u00ednh c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u1ef1c th\u1ec3 \u0111\u00f3.\u00a0<\/span><\/p>\n<h3><b>Quan h\u1ec7 (Relationships)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Quan h\u1ec7 x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3. M\u1ed1i quan h\u1ec7 n\u00e0y c\u00f3 th\u1ec3 l\u00e0 one-to-one (1:1), one-to-many (1:N) ho\u1eb7c many-to-many (M:N), t\u00f9y thu\u1ed9c v\u00e0o c\u00e1ch m\u00e0 c\u00e1c th\u1ef1c th\u1ec3 t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau. V\u00ed d\u1ee5, th\u1ef1c th\u1ec3 &#8220;Order&#8221; c\u00f3 th\u1ec3 li\u00ean k\u1ebft v\u1edbi th\u1ef1c th\u1ec3 &#8220;Customer&#8221;.<\/span><\/p>\n<h3><b>Cardinality<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Kh\u00e1i ni\u1ec7m n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn s\u1ed1 l\u01b0\u1ee3ng quan h\u1ec7 gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3 ho\u1eb7c b\u1ea3n ghi trong c\u01a1 s\u1edf d\u1eef li\u1ec7u. N\u00f3 m\u00f4 t\u1ea3 m\u1ee9c \u0111\u1ed9 m\u00e0 m\u1ed9t th\u1ef1c th\u1ec3 c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi c\u00e1c th\u1ef1c th\u1ec3 kh\u00e1c th\u00f4ng qua c\u00e1c m\u1ed1i quan h\u1ec7. V\u00ed d\u1ee5, m\u1ed1i quan h\u1ec7 gi\u1eefa m\u1ed9t kh\u00e1ch h\u00e0ng c\u1ee5 th\u1ec3 v\u00e0 \u0111\u01a1n h\u00e0ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 v\u1edbi m\u1ed9t m\u1ed1i quan h\u1ec7 1:N, c\u00f3 ngh\u0129a l\u00e0 m\u1ed9t \u0111\u01a1n h\u00e0ng ch\u1ec9 thu\u1ed9c m\u1ed9t kh\u00e1ch h\u00e0ng, nh\u01b0ng m\u1ed7i kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u \u0111\u01a1n h\u00e0ng.<\/span><\/p>\n<h3><b>Kh\u00f3a ch\u00ednh (Primary Key)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Kh\u00f3a ch\u00ednh l\u00e0 m\u1ed9t ho\u1eb7c m\u1ed9t nh\u00f3m c\u00e1c thu\u1ed9c t\u00ednh trong m\u1ed9t b\u1ea3ng d\u1eef li\u1ec7u, \u0111\u1ea1i di\u1ec7n cho c\u00e1ch duy nh\u1ea5t \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1ed7i <\/span><span style=\"font-weight: 400;\">b\u1ea3n ghi<\/span><span style=\"font-weight: 400;\"> trong b\u1ea3ng \u0111\u00f3 (m\u1ed7i b\u1ea3ng ch\u1ec9 c\u00f3 duy nh\u1ea5t m\u1ed9t kh\u00f3a ch\u00ednh). Ch\u1ee9c n\u0103ng c\u1ee7a kh\u00f3a ch\u00ednh \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed7i d\u00f2ng d\u1eef li\u1ec7u trong b\u1ea3ng c\u00f3 m\u1ed9t gi\u00e1 tr\u1ecb duy nh\u1ea5t v\u00e0 kh\u00f4ng th\u1ec3 tr\u00f9ng l\u1eb7p trong tr\u01b0\u1eddng n\u00e0y. <\/span><span style=\"font-weight: 400;\">Kh\u00f3a ch\u00ednh<\/span><span style=\"font-weight: 400;\"> th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 li\u00ean k\u1ebft v\u00e0 x\u00e1c \u0111\u1ecbnh m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c b\u1ea3ng trong c\u01a1 s\u1edf d\u1eef li\u1ec7u. V\u00ed d\u1ee5: Trong m\u1ed9t b\u1ea3ng &#8220;Order&#8221;, c\u1ed9t &#8220;Order_ID&#8221; c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh l\u00e0 kh\u00f3a ch\u00ednh b\u1edfi v\u00ec id c\u1ee7a m\u1ed7i kh\u00e1ch h\u00e0ng l\u00e0 duy nh\u1ea5t.<\/span><\/p>\n<h3><b>Kh\u00f3a ngo\u1ea1i (Foreign Key)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Kh\u00f3a ngo\u1ea1i l\u00e0 m\u1ed9t ho\u1eb7c m\u1ed9t nh\u00f3m c\u00e1c thu\u1ed9c t\u00ednh trong m\u1ed9t b\u1ea3ng d\u1eef li\u1ec7u, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 li\u00ean k\u1ebft v\u1edbi kh\u00f3a ch\u00ednh c\u1ee7a m\u1ed9t b\u1ea3ng kh\u00e1c trong c\u01a1 s\u1edf d\u1eef li\u1ec7u. N\u00f3 t\u1ea1o ra m\u1ed9t m\u1ed1i quan h\u1ec7 gi\u1eefa hai b\u1ea3ng, cho ph\u00e9p d\u1eef li\u1ec7u trong b\u1ea3ng hi\u1ec7n t\u1ea1i tr\u1ecf \u0111\u1ebfn d\u1eef li\u1ec7u trong b\u1ea3ng kh\u00e1c (m\u1ed7i b\u1ea3ng c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u kh\u00f3a ngo\u1ea1i, li\u00ean k\u1ebft \u0111\u1ebfn nhi\u1ec1u b\u1ea3ng kh\u00e1c). Kh\u00f3a ngo\u1ea1i th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c b\u1ea3ng v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c join \u0111\u1ec3 truy v\u1ea5n v\u00e0 k\u1ebft h\u1ee3p d\u1eef li\u1ec7u t\u1eeb nhi\u1ec1u b\u1ea3ng. V\u00ed d\u1ee5: Trong b\u1ea3ng &#8220;Order&#8221;, c\u1ed9t &#8220;Customer_ID&#8221; l\u00e0 m\u1ed9t kh\u00f3a ngo\u1ea1i tham chi\u1ebfu \u0111\u1ebfn c\u1ed9t &#8220;Customer_ID&#8221; trong b\u1ea3ng &#8220;Customer&#8221;.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac_loai_mo_hinh_du_lieu_co_ban\"><\/span><b>C\u00e1c lo\u1ea1i m\u00f4 h\u00ecnh d\u1eef li\u1ec7u c\u01a1 b\u1ea3n<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>M\u00f4 h\u00ecnh d\u1eef li\u1ec7u kh\u00e1i ni\u1ec7m (Conceptual Data Model)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh d\u1eef li\u1ec7u kh\u00e1i ni\u1ec7m, hay c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u00f4 h\u00ecnh mi\u1ec1n (domain model) cung c\u1ea5p c\u00e1i nh\u00ecn t\u1ed5ng quan v\u1ec1 c\u00e1c y\u1ebfu t\u1ed1 quan tr\u1ecdng c\u1ea7n c\u00f3 trong h\u1ec7 th\u1ed1ng. N\u00f3 gi\u00fap t\u1ed5 ch\u1ee9c v\u00e0 \u0111\u1ecbnh r\u00f5 c\u00e1c quy \u0111\u1ecbnh, chi\u1ebfn l\u01b0\u1ee3c kinh doanh li\u00ean quan \u0111\u1ebfn d\u1eef li\u1ec7u.\u00a0<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-68334 size-full\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-khai-niem-vippro.png\" alt=\"m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec - itviec blog\" width=\"1220\" height=\"1138\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-khai-niem-vippro.png 1220w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-khai-niem-vippro-300x280.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-khai-niem-vippro-768x716.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-khai-niem-vippro-200x187.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-khai-niem-vippro-100x93.png 100w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-khai-niem-vippro-482x450.png 482w\" sizes=\"auto, (max-width: 1220px) 100vw, 1220px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Th\u00f4ng th\u01b0\u1eddng, m\u00f4 h\u00ecnh kh\u00e1i ni\u1ec7m \u0111\u01b0\u1ee3c t\u1ea1o ra trong giai \u0111o\u1ea1n thu th\u1eadp y\u00eau c\u1ea7u d\u1ef1 \u00e1n ban \u0111\u1ea7u. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">X\u00e1c \u0111\u1ecbnh c\u00e1c l\u1edbp th\u1ef1c th\u1ec3, t\u1ee9c l\u00e0 c\u00e1c lo\u1ea1i th\u1ef1c th\u1ec3 quan tr\u1ecdng m\u00e0 h\u1ec7 th\u1ed1ng c\u1ea7n \u0111\u1ea1i di\u1ec7n trong m\u00f4 h\u00ecnh d\u1eef li\u1ec7u.\u00a0\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">X\u00e1c \u0111\u1ecbnh c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 r\u00e0ng bu\u1ed9c c\u1ee7a c\u00e1c th\u1ef1c th\u1ec3 n\u00e0y, c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang, c\u00e1c y\u00eau c\u1ea7u v\u1ec1 b\u1ea3o m\u1eadt v\u00e0 t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u li\u00ean quan.\u00a0<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">C\u00e1c bi\u1ec3u \u0111\u1ed3 ho\u1eb7c k\u00fd hi\u1ec7u trong m\u00f4 h\u00ecnh kh\u00e1i ni\u1ec7m th\u01b0\u1eddng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 hi\u1ec3u \u0111\u1ec3 c\u00f3 th\u1ec3 truy\u1ec1n \u0111\u1ea1t th\u00f4ng tin m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng v\u00e0 hi\u1ec7u qu\u1ea3.<\/span><\/p>\n<h3><b>M\u00f4 h\u00ecnh d\u1eef li\u1ec7u logic (Logical Data Model)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh d\u1eef li\u1ec7u logic cung c\u1ea5p th\u00f4ng tin chi ti\u1ebft h\u01a1n v\u1ec1 c\u00e1c kh\u00e1i ni\u1ec7m v\u00e0 m\u1ed1i quan h\u1ec7 trong m\u1ed9t l\u0129nh v\u1ef1c c\u1ee5 th\u1ec3 so v\u1edbi m\u00f4 h\u00ecnh d\u1eef li\u1ec7u kh\u00e1i ni\u1ec7m.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Trong m\u00f4 h\u00ecnh n\u00e0y, c\u00e1c thu\u1ed9c t\u00ednh d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng g\u1ed3m c\u00e1c lo\u1ea1i d\u1eef li\u1ec7u, \u0111\u1ed9 d\u00e0i c\u1ee7a ch\u00fang v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3 c\u0169ng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n m\u1ed9t c\u00e1ch c\u1ee5 th\u1ec3, h\u1ed7 tr\u1ee3 cho vi\u1ec7c hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u1ea5u tr\u00fac v\u00e0 t\u1ed5 ch\u1ee9c c\u1ee7a h\u1ec7 th\u1ed1ng d\u1eef li\u1ec7u.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-68332 size-full\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-logic-vippro.png\" alt=\"m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec - itviec blog\" width=\"1212\" height=\"1124\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-logic-vippro.png 1212w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-logic-vippro-300x278.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-logic-vippro-768x712.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-logic-vippro-200x185.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-logic-vippro-100x93.png 100w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-logic-vippro-485x450.png 485w\" sizes=\"auto, (max-width: 1212px) 100vw, 1212px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh d\u1eef li\u1ec7u logic kh\u00f4ng ch\u1ec9 \u0111\u1ecbnh b\u1ea5t k\u1ef3 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt c\u1ee5 th\u1ec3 n\u00e0o cho h\u1ec7 th\u1ed1ng. Trong quy tr\u00ecnh Agile ho\u1eb7c DevOps, giai \u0111o\u1ea1n n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c b\u1ecf qua ho\u1eb7c \u00edt \u0111\u01b0\u1ee3c ch\u00fa tr\u1ecdng.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh d\u1eef li\u1ec7u logic c\u00f3 th\u1ec3 h\u1eefu \u00edch trong c\u00e1c \u1ee9ng d\u1ee5ng m\u00e0 quy tr\u00ecnh c\u00f4ng vi\u1ec7c \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 ho\u1eb7c cho c\u00e1c d\u1ef1 \u00e1n mang t\u00ednh \u0111i\u1ec1u h\u01b0\u1edbng d\u1eef li\u1ec7u nh\u01b0 thi\u1ebft k\u1ebf kho d\u1eef li\u1ec7u ho\u1eb7c ph\u00e1t tri\u1ec3n c\u00e1c h\u1ec7 th\u1ed1ng b\u00e1o c\u00e1o.<\/span><\/p>\n<h3><b>M\u00f4 h\u00ecnh d\u1eef li\u1ec7u v\u1eadt l\u00fd <\/b><b>(Physical Data Model)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh d\u1eef li\u1ec7u v\u1eadt l\u00fd l\u00e0 m\u1ed9t b\u1ea3n thi\u1ebft k\u1ebf chi ti\u1ebft v\u1ec1 c\u00e1ch c\u1ea5u tr\u00fac v\u00e0 l\u01b0u tr\u1eef d\u1eef li\u1ec7u trong c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">N\u00f3 bao g\u1ed3m c\u00e1c b\u1ea3ng d\u1eef li\u1ec7u m\u00f4 t\u1ea3 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3 v\u00e0 c\u00e1c kh\u00f3a \u0111\u1ec3 duy tr\u00ec c\u00e1c m\u1ed1i quan h\u1ec7 n\u00e0y. C\u00f3 th\u1ec3 tri\u1ec3n khai tr\u1ef1c ti\u1ebfp t\u1eeb m\u00f4 h\u00ecnh n\u00e0y nh\u01b0 m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u. N\u00f3 c\u0169ng ch\u1ee9a c\u00e1c chi ti\u1ebft c\u1ee5 th\u1ec3 nh\u01b0 c\u00e1c thu\u1ed9c t\u00ednh cho h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u (DBMS), bao g\u1ed3m c\u1ea3 c\u00e1c \u0111i\u1ec1u ch\u1ec9nh hi\u1ec7u su\u1ea5t.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-68333 size-full\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-vat-ly-vippro.png\" alt=\"m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec - itviec blog\" width=\"1630\" height=\"1032\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-vat-ly-vippro.png 1630w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-vat-ly-vippro-300x190.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-vat-ly-vippro-1600x1013.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-vat-ly-vippro-200x127.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-vat-ly-vippro-100x63.png 100w\" sizes=\"auto, (max-width: 1630px) 100vw, 1630px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Mo_hinh_hoa_du_lieu_la_gi\"><\/span><b>M\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m l\u00e0 qu\u00e1 tr\u00ecnh \u0111\u01a1n gi\u1ea3n h\u00f3a bi\u1ec3u \u0111\u1ed3 ho\u1eb7c m\u00f4 h\u00ecnh d\u1eef li\u1ec7u c\u1ee7a h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m, th\u00f4ng qua vi\u1ec7c \u00e1p d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt nh\u1ea5t \u0111\u1ecbnh. M\u1ee5c ti\u00eau c\u1ee7a m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u l\u00e0 cung c\u1ea5p m\u1ed9t k\u1ebf ho\u1ea1ch chi ti\u1ebft \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u m\u1edbi ho\u1eb7c t\u00e1i c\u1ea5u tr\u00fac c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00e3 t\u1ed3n t\u1ea1i.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng v\u00e0 \u0111\u1ea7u ti\u00ean trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh c\u1ea5u tr\u00fac c\u1ee7a d\u1eef li\u1ec7u. Qu\u00e1 tr\u00ecnh n\u00e0y t\u1ea1o ra c\u00e1c m\u00f4 h\u00ecnh d\u1eef li\u1ec7u m\u00f4 t\u1ea3 m\u1ed1i quan h\u1ec7 v\u00e0 r\u00e0ng bu\u1ed9c d\u1eef li\u1ec7u, sau \u0111\u00f3 m\u00e3 h\u00f3a ch\u00fang \u0111\u1ec3 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ea1i. M\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u bi\u1ec3u di\u1ec5n d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch tr\u1eebu t\u01b0\u1ee3ng th\u00f4ng qua s\u01a1 \u0111\u1ed3, k\u00fd hi\u1ec7u ho\u1eb7c v\u0103n b\u1ea3n \u0111\u1ec3 th\u1ec3 hi\u1ec7n m\u1ed1i li\u00ean k\u1ebft gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Do \u0111\u00f3, m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u gi\u00fap t\u0103ng t\u00ednh nh\u1ea5t qu\u00e1n trong vi\u1ec7c \u0111\u1eb7t t\u00ean, quy t\u1eafc, ng\u1eef ngh\u0129a v\u00e0 b\u1ea3o m\u1eadt c\u1ee7a d\u1eef li\u1ec7u. N\u00f3 c\u0169ng gi\u00fap c\u1ea3i thi\u1ec7n qu\u00e1 tr\u00ecnh ph\u00e2n t\u00edch d\u1eef li\u1ec7u b\u1eb1ng c\u00e1ch t\u1eadp trung v\u00e0o y\u00eau c\u1ea7u v\u1ec1 t\u1ed5 ch\u1ee9c v\u00e0 t\u00ednh s\u1eb5n c\u00f3 c\u1ee7a d\u1eef li\u1ec7u, \u0111\u1ed9c l\u1eadp v\u1edbi c\u00e1ch th\u1ee9c s\u1eed d\u1ee5ng c\u1ee7a n\u00f3 trong c\u00e1c \u1ee9ng d\u1ee5ng.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac_cach_mo_hinh_hoa_du_lieu\"><\/span><b>C\u00e1c c\u00e1ch m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>M\u00f4 h\u00ecnh d\u1eef li\u1ec7u ph\u00e2n c\u1ea5p (Hierarchical model)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ea1i di\u1ec7n cho m\u1ed1i quan h\u1ec7 m\u1ed9t-nhi\u1ec1u d\u01b0\u1edbi d\u1ea1ng c\u00e2y. Trong c\u00e1ch n\u00e0y, m\u1ed7i record c\u00f3 m\u1ed9t n\u00fat g\u1ed1c ho\u1eb7c cha duy nh\u1ea5t \u00e1nh x\u1ea1 v\u1edbi m\u1ed9t ho\u1eb7c nhi\u1ec1u b\u1ea3ng con.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-68330 size-full\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-phan-cap-vippro.png\" alt=\"m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec - itviec blog\" width=\"1874\" height=\"1002\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-phan-cap-vippro.png 1874w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-phan-cap-vippro-300x160.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-phan-cap-vippro-1600x855.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-phan-cap-vippro-200x107.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-phan-cap-vippro-100x53.png 100w\" sizes=\"auto, (max-width: 1874px) 100vw, 1874px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c tri\u1ec3n khai trong H\u1ec7 th\u1ed1ng Qu\u1ea3n l\u00fd Th\u00f4ng tin c\u1ee7a IBM (Information Management System), \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u00e0o n\u0103m 1966 v\u00e0 nhanh ch\u00f3ng tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong l\u0129nh v\u1ef1c ng\u00e2n h\u00e0ng. M\u1eb7c d\u00f9 ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng hi\u1ec7u qu\u1ea3 b\u1eb1ng c\u00e1c m\u00f4 h\u00ecnh c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n g\u1ea7n \u0111\u00e2y, nh\u01b0ng n\u00f3 v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng XML m\u1edf r\u1ed9ng v\u00e0 h\u1ec7 th\u1ed1ng th\u00f4ng tin \u0111\u1ecba l\u00fd (Geographic Information Systems).<\/span><\/p>\n<h3><b>M\u00f4 h\u00ecnh d\u1eef li\u1ec7u quan h\u1ec7 (Relational model)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh d\u1eef li\u1ec7u d\u1ea1ng quan h\u1ec7 kh\u00f4ng \u0111\u00f2i h\u1ecfi hi\u1ec3u bi\u1ebft chi ti\u1ebft v\u1ec1 c\u00e1c thu\u1ed9c t\u00ednh v\u1eadt l\u00fd c\u1ee7a vi\u1ec7c l\u01b0u tr\u1eef d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. <\/span><span style=\"font-weight: 400;\">Trong c\u00e1ch n\u00e0y, c\u00e1c \u0111o\u1ea1n d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c li\u00ean k\u1ebft m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng th\u00f4ng qua vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c b\u1ea3ng, gi\u1ea3m b\u1edbt s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u. <\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-68335 size-full\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-quan-he-vippro.png\" alt=\"m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec - itviec blog\" width=\"1078\" height=\"644\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-quan-he-vippro.png 1078w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-quan-he-vippro-300x179.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-quan-he-vippro-700x418.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-quan-he-vippro-200x119.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-quan-he-vippro-100x60.png 100w\" sizes=\"auto, (max-width: 1078px) 100vw, 1078px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">C\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 th\u01b0\u1eddng s\u1eed d\u1ee5ng ng\u00f4n ng\u1eef truy v\u1ea5n c\u1ea5u tr\u00fac (SQL) cho qu\u1ea3n l\u00fd d\u1eef li\u1ec7u. Nh\u1eefng c\u01a1 s\u1edf d\u1eef li\u1ec7u n\u00e0y ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong vi\u1ec7c duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u v\u00e0 gi\u1ea3m thi\u1ec3u s\u1ef1 tr\u00f9ng l\u1eb7p. M\u00f4 h\u00ecnh n\u00e0y tr\u1edf th\u00e0nh n\u1ec1n t\u1ea3ng cho nhi\u1ec1u h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u hi\u1ec7n nay, ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec3m b\u00e1n h\u00e0ng, c\u0169ng nh\u01b0 trong c\u00e1c lo\u1ea1i x\u1eed l\u00fd giao d\u1ecbch kh\u00e1c.<\/span><\/p>\n<h3><b>M\u00f4 h\u00ecnh d\u1eef li\u1ec7u th\u1ef1c th\u1ec3-quan h\u1ec7 (Entity-Relationship model)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">C\u00e1ch n\u00e0y s\u1eed d\u1ee5ng bi\u1ec3u \u0111\u1ed3 \u0111\u1ec3 bi\u1ec3u di\u1ec5n c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3 trong c\u01a1 s\u1edf d\u1eef li\u1ec7u. C\u00e1c c\u00f4ng c\u1ee5 m\u00f4 h\u00ecnh ER s\u1eed d\u1ee5ng c\u00e1c ki\u1ebfn tr\u00fac d\u1eef li\u1ec7u \u0111\u1ec3 t\u1ea1o ra c\u00e1c b\u1ea3n \u0111\u1ed3 tr\u1ef1c quan th\u1ec3 hi\u1ec7n m\u1ee5c ti\u00eau thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-68331 size-full\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-ER-vippro.png\" alt=\"m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec - itviec blog\" width=\"1768\" height=\"1014\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-ER-vippro.png 1768w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-ER-vippro-300x172.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-ER-vippro-1600x918.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-ER-vippro-200x115.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/05\/MHDL-ER-vippro-100x57.png 100w\" sizes=\"auto, (max-width: 1768px) 100vw, 1768px\" \/><\/p>\n<h3><b>M\u00f4 h\u00ecnh d\u1eef li\u1ec7u h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng (Object-oriented model)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">C\u00e1ch m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u n\u00e0y tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn t\u1eeb nh\u1eefng n\u0103m 1990, song song v\u1edbi s\u1ef1 b\u00f9ng n\u1ed5 c\u1ee7a l\u1eadp tr\u00ecnh h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng. C\u00e1c &#8220;\u0111\u1ed1i t\u01b0\u1ee3ng&#8221; \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 c\u00e1c tr\u1eebu t\u01b0\u1ee3ng c\u1ee7a c\u00e1c th\u1ef1c th\u1ec3 th\u1ebf gi\u1edbi th\u1ef1c. C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c nh\u00f3m l\u1ea1i trong c\u00e1c h\u1ec7 th\u1ed1ng ph\u00e2n c\u1ea5p l\u1edbp (class hierarchies) v\u00e0 k\u00e8m theo t\u00ednh n\u0103ng. C\u01a1 s\u1edf d\u1eef li\u1ec7u h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 t\u00edch h\u1ee3p b\u1ea3ng, nh\u01b0ng c\u0169ng c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c m\u1ed1i quan h\u1ec7 d\u1eef li\u1ec7u ph\u1ee9c t\u1ea1p h\u01a1n. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111a ph\u01b0\u01a1ng ti\u1ec7n, si\u00eau v\u0103n b\u1ea3n c\u0169ng nh\u01b0 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00e1c.<\/span><\/p>\n<h3><b>M\u00f4 h\u00ecnh d\u1eef li\u1ec7u Dimensional<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">C\u00e1ch m\u00f4 h\u00ecnh h\u00f3a n\u00e0y \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi Ralph Kimball v\u00e0 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a t\u1ed1c \u0111\u1ed9 truy xu\u1ea5t d\u1eef li\u1ec7u cho m\u1ee5c \u0111\u00edch ph\u00e2n t\u00edch trong kho d\u1eef li\u1ec7u. Trong khi m\u00f4 h\u00ecnh quan h\u1ec7 v\u00e0 ER nh\u1ea5n m\u1ea1nh v\u00e0o vi\u1ec7c l\u01b0u tr\u1eef hi\u1ec7u qu\u1ea3, c\u00e1c m\u00f4 h\u00ecnh Dimensional t\u0103ng s\u1ef1 tr\u00f9ng l\u1eb7p nh\u1eb1m d\u1ec5 d\u00e0ng \u0111\u1ecbnh v\u1ecb th\u00f4ng tin \u0111\u1ec3 b\u00e1o c\u00e1o v\u00e0 truy xu\u1ea5t d\u1eef li\u1ec7u. M\u00f4 h\u00ecnh n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng ph\u00e2n t\u00edch d\u1eef li\u1ec7u tr\u1ef1c tuy\u1ebfn (Online Analytical Processing &#8211; OLAP).<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac_buoc_mo_hinh_hoa_du_lieu\"><\/span><b>C\u00e1c b\u01b0\u1edbc m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>B\u01b0\u1edbc 1. X\u00e1c \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean l\u00e0 thu th\u1eadp c\u00e1c y\u00eau c\u1ea7u kinh doanh li\u00ean quan \u0111\u1ebfn x\u1eed l\u00fd d\u1eef li\u1ec7u trong \u1ee9ng d\u1ee5ng. Trong giai \u0111o\u1ea1n n\u00e0y, c\u00e1c y\u00eau c\u1ea7u c\u00f3 th\u1ec3 t\u1ed5ng qu\u00e1t v\u00e0 t\u1eadp trung v\u00e0o m\u1ee5c \u0111\u00edch chung c\u1ee7a \u1ee9ng d\u1ee5ng. Vi\u1ec7c n\u00e0y gi\u00fap x\u00e1c \u0111\u1ecbnh r\u00f5 nh\u1eefng g\u00ec m\u00e0 \u1ee9ng d\u1ee5ng c\u1ea7n th\u1ef1c hi\u1ec7n v\u00e0 c\u1ea7n nh\u1eefng d\u1eef li\u1ec7u g\u00ec \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau \u0111\u00f3.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Sau khi thu th\u1eadp \u0111\u01b0\u1ee3c c\u00e1c y\u00eau c\u1ea7u, b\u01b0\u1edbc ti\u1ebfp theo l\u00e0 ph\u00e2n t\u00edch ch\u00fang \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh n\u1ed9i dung c\u1ee5 th\u1ec3 n\u00e0o s\u1ebd \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd trong h\u1ec7 th\u1ed1ng v\u00e0 l\u01b0u tr\u1eef trong c\u01a1 s\u1edf d\u1eef li\u1ec7u. Qu\u00e1 tr\u00ecnh n\u00e0y li\u00ean quan \u0111\u1ebfn vi\u1ec7c n\u1eafm b\u1eaft \u00fd \u0111\u1ecbnh s\u00e2u h\u01a1n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i, c\u00e1c quy tr\u00ecnh kinh doanh c\u1ee5 th\u1ec3 v\u00e0 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt \u0111\u1ec3 hi\u1ec3u r\u00f5 v\u1ec1 c\u00e1c t\u00e1c v\u1ee5 v\u00e0 th\u00f4ng tin c\u1ea7n thi\u1ebft cho \u1ee9ng d\u1ee5ng. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u00f2i h\u1ecfi s\u1ef1 h\u1ee3p t\u00e1c ch\u1eb7t ch\u1ebd gi\u1eefa nh\u00f3m kinh doanh v\u00e0 k\u1ef9 thu\u1eadt \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng h\u1ec7 th\u1ed1ng s\u1ebd \u0111\u00e1p \u1ee9ng \u0111\u00fang nhu c\u1ea7u v\u00e0 m\u1ee5c ti\u00eau kinh doanh.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">V\u00ed d\u1ee5, n\u1ebfu b\u1ea1n \u0111ang ph\u00e1t tri\u1ec3n m\u1ed9t \u1ee9ng d\u1ee5ng qu\u1ea3n l\u00fd \u0111\u01a1n h\u00e0ng tr\u1ef1c tuy\u1ebfn th\u00ec c\u00e1c y\u00eau c\u1ea7u c\u00f3 th\u1ec3 bao g\u1ed3m:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Kh\u00e1ch h\u00e0ng c\u1ea7n \u0111\u1eb7t \u0111\u01b0\u1ee3c h\u00e0ng tr\u1ef1c tuy\u1ebfn th\u00f4ng qua giao di\u1ec7n d\u1ec5 s\u1eed d\u1ee5ng v\u00e0 thu\u1eadn ti\u1ec7n.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Nh\u00e2n vi\u00ean c\u1ea7n nh\u1eadn th\u00f4ng b\u00e1o v\u00e0 x\u00e1c nh\u1eadn c\u00e1c \u0111\u01a1n h\u00e0ng m\u1edbi.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Qu\u1ea3n l\u00fd c\u1ea7n theo d\u00f5i \u0111\u01b0\u1ee3c t\u00ecnh tr\u1ea1ng v\u00e0 ti\u1ebfn \u0111\u1ed9 c\u1ee7a c\u00e1c \u0111\u01a1n h\u00e0ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">H\u1ec7 th\u1ed1ng c\u1ea7n t\u00edch h\u1ee3p thanh to\u00e1n tr\u1ef1c tuy\u1ebfn v\u00e0 qu\u1ea3n l\u00fd h\u00e0ng t\u1ed3n kho.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Kh\u00e1ch h\u00e0ng c\u1ea7n nh\u1eadn th\u00f4ng tin c\u1eadp nh\u1eadt v\u00e0 theo d\u00f5i ti\u1ebfn \u0111\u1ed9 v\u1eadn chuy\u1ec3n c\u1ee7a \u0111\u01a1n h\u00e0ng \u0111\u00e3 \u0111\u1eb7t.<\/span><\/li>\n<\/ol>\n<h3><b>B\u01b0\u1edbc 2. Thi\u1ebft k\u1ebf m\u00f4 h\u00ecnh d\u1eef li\u1ec7u kh\u00e1i ni\u1ec7m<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Ti\u1ebfp theo, m\u1ed9t m\u00f4 h\u00ecnh kh\u00e1i ni\u1ec7m s\u1ebd \u0111\u01b0\u1ee3c t\u1ea1o ra \u0111\u1ec3 minh h\u1ecda c\u00e1ch c\u00e1c th\u1ef1c th\u1ec3 kh\u00e1c nhau t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau, m\u00f4 h\u00ecnh n\u00e0y kh\u00f4ng c\u1ea7n \u0111\u1ec1 c\u1eadp qu\u00e1 nhi\u1ec1u chi ti\u1ebft k\u1ef9 thu\u1eadt. Qu\u00e1 tr\u00ecnh n\u00e0y bao g\u1ed3m vi\u1ec7c ph\u00e1t tri\u1ec3n bi\u1ec3u \u0111\u1ed3 th\u1ef1c th\u1ec3-m\u1ed1i quan h\u1ec7 \u0111\u1ec3 tr\u1ef1c quan h\u00f3a c\u00e1c th\u1ef1c th\u1ec3 ch\u00ednh v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa ch\u00fang, c\u0169ng nh\u01b0 b\u1eaft k\u1ecbp c\u00e1c quy t\u1eafc kinh doanh quan tr\u1ecdng nh\u01b0 r\u00e0ng bu\u1ed9c duy nh\u1ea5t ho\u1eb7c tr\u01b0\u1eddng b\u1eaft bu\u1ed9c.<\/span><\/p>\n<h3><b>B\u01b0\u1edbc 3. M\u00f4 h\u00ecnh h\u00f3a logic<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Ti\u1ebfp \u0111\u00f3, m\u1ed9t m\u00f4 h\u00ecnh logic chi ti\u1ebft h\u01a1n \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n d\u1ef1a tr\u00ean m\u00f4 h\u00ecnh kh\u00e1i ni\u1ec7m ban \u0111\u1ea7u. Qu\u00e1 tr\u00ecnh n\u00e0y li\u00ean quan \u0111\u1ebfn vi\u1ec7c x\u00e1c \u0111\u1ecbnh t\u1ea5t c\u1ea3 c\u00e1c th\u1ef1c th\u1ec3, thu\u1ed9c t\u00ednh v\u00e0 m\u1ed1i quan h\u1ec7, m\u00e0 kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o b\u1ea5t k\u1ef3 c\u00f4ng ngh\u1ec7 c\u1ee5 th\u1ec3 n\u00e0o cho vi\u1ec7c l\u01b0u tr\u1eef d\u1eef li\u1ec7u. Qua qu\u00e1 tr\u00ecnh chu\u1ea9n h\u00f3a, m\u1ee5c ti\u00eau l\u00e0 lo\u1ea1i b\u1ecf s\u1ef1 tr\u00f9ng l\u1eb7p d\u1eef li\u1ec7u v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ed9t c\u1ea5u tr\u00fac \u1ed5n \u0111\u1ecbnh v\u00e0 linh ho\u1ea1t.<\/span><\/p>\n<h3><b>B\u01b0\u1edbc 4. M\u00f4 h\u00ecnh h\u00f3a v\u1eadt l\u00fd<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">D\u1ef1a tr\u00ean m\u00f4 h\u00ecnh logic, m\u1ed9t m\u00f4 h\u00ecnh v\u1eadt l\u00fd \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng v\u1edbi c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 x\u00e1c \u0111\u1ecbnh kh\u00f3a, ch\u1ec9 m\u1ee5c, ph\u00e2n v\u00f9ng d\u1eef li\u1ec7u \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t truy v\u1ea5n. K\u1ebf ho\u1ea1ch sao l\u01b0u v\u00e0 ph\u1ee5c h\u1ed3i d\u1eef li\u1ec7u c\u0169ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh s\u1eb5n c\u00f3 v\u00e0 b\u1ec1n v\u1eefng c\u1ee7a d\u1eef li\u1ec7u.<\/span><\/p>\n<h3><b>B\u01b0\u1edbc 5. B\u1ea3o tr\u00ec v\u00e0 t\u1ed1i \u01b0u h\u00f3a<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Cu\u1ed1i c\u00f9ng, h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c b\u1ea3o tr\u00ec v\u00e0 t\u1ed1i \u01b0u h\u00f3a b\u1eb1ng c\u00e1ch theo d\u00f5i hi\u1ec7u su\u1ea5t v\u00e0 c\u1eadp nh\u1eadt t\u00e0i li\u1ec7u khi m\u00f4 h\u00ecnh d\u1eef li\u1ec7u thay \u0111\u1ed5i, \u0111\u1ed3ng th\u1eddi th\u1ef1c hi\u1ec7n c\u00e1c \u0111i\u1ec1u ch\u1ec9nh c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u kinh doanh ph\u00e1t tri\u1ec3n v\u00e0 ti\u1ebfn b\u1ed9 c\u00f4ng ngh\u1ec7.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"10_sai_lam_thuong_gap_khi_su_dung_mo_hinh_du_lieu\"><\/span><b>10 sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p khi s\u1eed d\u1ee5ng m\u00f4 h\u00ecnh d\u1eef li\u1ec7u<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Khi x\u00e2y d\u1ef1ng m\u1ed9t m\u00f4 h\u00ecnh d\u1eef li\u1ec7u, c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean v\u00e0 nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng th\u00f4ng tin \u0111\u1ec1u c\u00f3 th\u1ec3 m\u1eafc ph\u1ea3i nh\u1eefng sai l\u1ea7m. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn:<\/span><\/p>\n<ol>\n<li><b> B\u1ecf qua t\u00ednh linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng th\u00edch nghi c\u1ee7a m\u00f4 h\u00ecnh d\u1eef li\u1ec7u v\u1edbi m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p th\u01b0\u1eddng xuy\u00ean thay \u0111\u1ed5i:<\/b><span style=\"font-weight: 400;\"> \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 x\u1ea3y ra khi x\u00e2y d\u1ef1ng ho\u1eb7c tri\u1ec3n khai m\u1ed9t m\u00f4 h\u00ecnh d\u1eef li\u1ec7u m\u00e0 kh\u00f4ng c\u00e2n nh\u1eafc \u0111\u1ebfn c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a doanh nghi\u1ec7p, thay \u0111\u1ed5i trong nhu c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng ho\u1eb7c th\u1ecb tr\u01b0\u1eddng, ho\u1eb7c c\u00e1c y\u1ebfu t\u1ed1 c\u00f4ng ngh\u1ec7 m\u1edbi, khi\u1ebfn cho h\u1ec7 th\u1ed1ng b\u1ecb h\u1ea1n ch\u1ebf v\u1ec1 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/span><\/li>\n<li><b> X\u00e2y d\u1ef1ng b\u1ea3ng d\u1eef li\u1ec7u qu\u00e1 l\u1edbn v\u00e0 ph\u1ee9c t\u1ea1p:<\/b><span style=\"font-weight: 400;\"> \u0110i\u1ec1u n\u00e0y g\u00e2y kh\u00f3 kh\u0103n trong vi\u1ec7c ti\u1ebfp c\u1eadn v\u00ec sao \u0111\u00f3 ph\u1ea3i chuy\u1ec3n \u0111\u1ed5i th\u00e0nh c\u00e1c b\u1ea3ng ri\u00eang bi\u1ec7t. M\u1ed9t c\u1ea5u tr\u00fac d\u1eef li\u1ec7u ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 r\u1ed1i lo\u1ea1n, kh\u00f3 kh\u0103n trong vi\u1ec7c b\u1ea3o tr\u00ec, l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t trong vi\u1ec7c truy v\u1ea5n v\u00e0 x\u1eed l\u00fd d\u1eef li\u1ec7u.<\/span><\/li>\n<li><b> L\u1ef1a ch\u1ecdn sai m\u00f4 h\u00ecnh d\u1eef li\u1ec7u<\/b><span style=\"font-weight: 400;\">: Vi\u1ec7c l\u1ef1a ch\u1ecdn m\u00f4 h\u00ecnh d\u1eef li\u1ec7u kh\u00f4ng ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn kh\u00f4ng th\u1ec3 l\u01b0u tr\u1eef ho\u1eb7c truy c\u1eadp \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft, ho\u1eb7c t\u1ec7 h\u01a1n l\u00e0 khi\u1ebfn ph\u1ea7n m\u1ec1m kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c m\u1ed9t trong c\u00e1c y\u00eau c\u1ea7u t\u1eeb ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i.<\/span><\/li>\n<li><b> B\u1ecf qua nhu c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i<\/b><span style=\"font-weight: 400;\">: Vi\u1ec7c kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u00fang nhu c\u1ea7u c\u1ee7a ng\u01b0\u1eddi s\u1eed d\u1ee5ng cu\u1ed1i c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c m\u00f4 h\u00ecnh d\u1eef li\u1ec7u kh\u00f4ng ph\u1ea3n \u00e1nh \u0111\u00fang y\u00eau c\u1ea7u th\u1ef1c t\u1ebf.<\/span><\/li>\n<li><b> Kh\u00f4ng x\u00e1c \u0111\u1ecbnh \u0111\u00fang v\u00e0 \u0111\u1ea7y \u0111\u1ee7 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3:<\/b><span style=\"font-weight: 400;\"> Trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u, vi\u1ec7c kh\u00f4ng x\u00e1c \u0111\u1ecbnh m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3 m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ea7y \u0111\u1ee7 th\u01b0\u1eddng g\u00e2y ra nh\u1eefng v\u1ea5n \u0111\u1ec1 nh\u01b0 l\u1eb7p d\u1eef li\u1ec7u ho\u1eb7c s\u1ef1 ph\u1ee9c t\u1ea1p kh\u00f4ng c\u1ea7n thi\u1ebft trong c\u01a1 s\u1edf d\u1eef li\u1ec7u, l\u00e0m m\u1ea5t \u0111i t\u00ednh g\u1ecdn g\u00e0ng v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng.<\/span><\/li>\n<li><b> L\u1ed7i s\u1eed d\u1ee5ng kh\u00f3a ch\u00ednh<\/b><span style=\"font-weight: 400;\">: S\u1eed d\u1ee5ng c\u00e1c kh\u00f3a ch\u00ednh (primary keys) c\u00f3 \u0111\u1ed9 chi ti\u1ebft d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t khi thi\u1ebft l\u1eadp cho m\u1ed7i b\u1ea3ng trong c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u00f3 th\u1ec3 l\u00e0m t\u0103ng \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/span><\/li>\n<li><b> L\u1ed7i \u0111\u1eb7t t\u00ean:<\/b><span style=\"font-weight: 400;\"> S\u1eed d\u1ee5ng c\u00e1c quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean kh\u00f4ng ph\u00f9 h\u1ee3p, kh\u00f4ng c\u00f3 quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean \u0111\u1ed3ng nh\u1ea5t, ho\u1eb7c qu\u00ean t\u00e0i li\u1ec7u h\u00f3a t\u1eeb \u0111i\u1ec3n d\u1eef li\u1ec7u c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 nh\u1ea7m l\u1eabn, thi\u1ebfu r\u00f5 r\u00e0ng v\u00e0 kh\u00f4ng nh\u1ea5t qu\u00e1n trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n v\u00e0 qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u su\u1ea5t, b\u1ea3o tr\u00ec v\u00e0 m\u1edf r\u1ed9ng c\u01a1 s\u1edf d\u1eef li\u1ec7u sau n\u00e0y.<\/span><\/li>\n<li><b> T\u1ea1o qu\u00e1 nhi\u1ec1u (ho\u1eb7c qu\u00e1 ph\u1ee9c t\u1ea1p) c\u00e1c view trong c\u01a1 s\u1edf d\u1eef li\u1ec7u: <\/b><span style=\"font-weight: 400;\">C\u00e1c ch\u1ebf \u0111\u1ed9 xem ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t v\u00e0 l\u00e0m cho qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p.<\/span><\/li>\n<li><b> Kh\u00f4ng duy tr\u00ec t\u00ednh li\u00ean t\u1ee5c c\u1ee7a m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u<\/b><span style=\"font-weight: 400;\">: M\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c duy tr\u00ec v\u00e0 c\u1eadp nh\u1eadt li\u00ean t\u1ee5c \u0111\u1ec3 ph\u1ea3n \u00e1nh c\u00e1c thay \u0111\u1ed5i trong y\u00eau c\u1ea7u kinh doanh v\u00e0 m\u00f4i tr\u01b0\u1eddng d\u1eef li\u1ec7u.<\/span><\/li>\n<li><b> Giao ti\u1ebfp k\u00e9m gi\u1eefa c\u00e1c b\u00ean li\u00ean quan<\/b><span style=\"font-weight: 400;\">: S\u1ef1 thi\u1ebfu h\u1ee5t giao ti\u1ebfp c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c thi\u1ebft k\u1ebf d\u1eef li\u1ec7u kh\u00f4ng t\u1ed1i \u01b0u, l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Nh\u1eefng sai l\u1ea7m tr\u00ean c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a m\u00f4 h\u00ecnh d\u1eef li\u1ec7u, do \u0111\u00f3, vi\u1ec7c nh\u1eadn bi\u1ebft v\u00e0 tr\u00e1nh c\u00e1c l\u1ed7i tr\u00ean l\u00e0 r\u1ea5t quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n v\u00e0 duy tr\u00ec c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a m\u1ed9t t\u1ed5 ch\u1ee9c.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau_hoi_thuong_gap_ve_mo_hinh_du_lieu\"><\/span><b>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 m\u00f4 h\u00ecnh d\u1eef li\u1ec7u<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>L\u00e0m sao \u0111\u1ec3 x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh d\u1eef li\u1ec7u t\u1ed1i \u01b0u v\u00e0 hi\u1ec7u qu\u1ea3?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 t\u1ed1i \u01b0u h\u00f3a m\u00f4 h\u00ecnh d\u1eef li\u1ec7u, h\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi c\u00e1c y\u00eau c\u1ea7u r\u00f5 r\u00e0ng, h\u00ecnh dung d\u1eef li\u1ec7u, gi\u1eef cho m\u00f4 h\u00ecnh \u0111\u01b0\u1ee3c \u0111\u01a1n gi\u1ea3n, ch\u1ec9 s\u1eed d\u1ee5ng nh\u1eefng d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft, x\u00e1c minh t\u1eebng giai \u0111o\u1ea1n, t\u00e0i li\u1ec7u h\u00f3a m\u00f4 h\u00ecnh v\u00e0 thi\u1ebft l\u1eadp quy tr\u00ecnh giao ti\u1ebfp t\u1ed1t gi\u1eefa c\u00e1c ph\u00f2ng ban li\u00ean quan.<\/span><\/p>\n<h3><b>H\u1ea1n ch\u1ebf c\u1ee7a m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">H\u1ea1n ch\u1ebf v\u1ec1 s\u1ef1 linh ho\u1ea1t: M\u00f4 h\u00ecnh d\u1eef li\u1ec7u c\u00f3 th\u1ec3 thi\u1ebfu linh ho\u1ea1t, l\u00e0m cho vi\u1ec7c th\u00edch nghi v\u1edbi y\u00eau c\u1ea7u ho\u1eb7c c\u1ea5u tr\u00fac d\u1eef li\u1ec7u thay \u0111\u1ed5i tr\u1edf n\u00ean kh\u00f3 kh\u0103n.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0110\u1ed9 ph\u1ee9c t\u1ea1p: M\u00f4 h\u00ecnh d\u1eef li\u1ec7u c\u00f3 th\u1ec3 ph\u1ee9c t\u1ea1p v\u00e0 kh\u00f3 hi\u1ec3u n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y kh\u00f3 kh\u0103n cho c\u00e1c b\u00ean li\u00ean quan trong vi\u1ec7c cung c\u1ea5p \u0111\u1ea7u v\u00e0o ho\u1eb7c h\u1ee3p t\u00e1c hi\u1ec7u qu\u1ea3.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u1ed1n th\u1eddi gian: Qu\u00e1 tr\u00ecnh m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u c\u00f3 th\u1ec3 t\u1ed1n th\u1eddi gian, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi c\u00e1c t\u1eadp d\u1eef li\u1ec7u l\u1edbn ho\u1eb7c ph\u1ee9c t\u1ea1p.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Tong_ket_mo_hinh_du_lieu_la_gi\"><\/span><b>T\u1ed5ng k\u1ebft m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Kh\u00e1i ni\u1ec7m v\u1ec1 m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c bi\u1ec3u di\u1ec5n v\u00e0 t\u1ed5 ch\u1ee9c d\u1eef li\u1ec7u, t\u1eeb \u0111\u00f3 t\u1ea1o ra c\u01a1 s\u1edf cho vi\u1ec7c ra quy\u1ebft \u0111\u1ecbnh th\u00f4ng minh d\u1ef1a tr\u00ean d\u1eef li\u1ec7u. Hi\u1ec3u \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec s\u1ebd gi\u00fap b\u1ea1n \u1ee9ng d\u1ee5ng t\u1ed1t tr\u00ean nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed, d\u1ecbch v\u1ee5 t\u00e0i ch\u00ednh \u0111\u1ebfn ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t kinh doanh v\u00e0 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng ng\u00e0y c\u00e0ng t\u0103ng cao.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong th\u1ebf gi\u1edbi s\u1ed1 h\u00f3a ng\u00e0y nay, d\u1eef li\u1ec7u l\u00e0 m\u1ed9t t\u00e0i nguy\u00ean v\u00f4 c\u00f9ng qu\u00fd gi\u00e1, vi\u1ec7c hi\u1ec3u v\u00e0 qu\u1ea3n l\u00fd d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 l\u00e0 ch\u00eca kh\u00f3a cho s\u1ef1 th\u00e0nh c\u00f4ng c\u1ee7a m\u1ecdi doanh nghi\u1ec7p. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd \u0111i s\u00e2u v\u00e0o kh\u00e1i ni\u1ec7m m\u00f4 h\u00ecnh d\u1eef li\u1ec7u [&hellip;]<\/p>\n","protected":false},"author":209,"featured_media":68461,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_gspb_post_css":"","footnotes":""},"categories":[109],"tags":[],"class_list":["post-68323","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chuyen-mon-it"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>M\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec? 5 b\u01b0\u1edbc m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u ph\u1ed5 bi\u1ebfn - ITviec Blog<\/title>\n<meta name=\"description\" content=\"M\u00f4 h\u00ecnh d\u1eef li\u1ec7u l\u00e0 g\u00ec? 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