{"id":66544,"date":"2024-04-20T21:12:05","date_gmt":"2024-04-20T14:12:05","guid":{"rendered":"https:\/\/itviec.com\/blog\/?p=66544"},"modified":"2024-04-20T21:12:05","modified_gmt":"2024-04-20T14:12:05","slug":"rdbms-vs-nosql","status":"publish","type":"post","link":"https:\/\/itviec.com\/blog\/rdbms-vs-nosql\/","title":{"rendered":"RDBMS vs NoSQL: \u0110\u1ecbnh ngh\u0129a, So s\u00e1nh v\u00e0 Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng"},"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\/rdbms-vs-nosql\/#RDBMS_vs_NoSQL_Dinh_nghia\" >RDBMS vs NoSQL: \u0110\u1ecbnh ngh\u0129a<\/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\/rdbms-vs-nosql\/#RDBMS_vs_NoSQL_8_yeu_to_khac_biet\" >RDBMS vs NoSQL: 8 y\u1ebfu t\u1ed1 kh\u00e1c bi\u1ec7t<\/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\/rdbms-vs-nosql\/#Cac_truong_hop_su_dung_RDBMS_vs_NoSQL\" >C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng RDBMS vs NoSQL<\/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\/rdbms-vs-nosql\/#Cau_hoi_thuong_gap_NoSQL_vs_RDBMS\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p NoSQL vs RDBMS<\/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\/rdbms-vs-nosql\/#Tong_ket\" >T\u1ed5ng k\u1ebft<\/a><\/li><\/ul><\/nav><\/div>\n<p><em><strong>Trong th\u1ebf gi\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u hi\u1ec7n nay, hai h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd ph\u1ed5 bi\u1ebfn l\u00e0 RDBMS v\u00e0 NoSQL. RDBMS \u0111\u00e3 t\u1eeb l\u00e2u tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n cho vi\u1ec7c qu\u1ea3n l\u00fd d\u1eef li\u1ec7u v\u1edbi m\u00f4 h\u00ecnh quan h\u1ec7 v\u00e0 c\u00e1c chu\u1ea9n m\u1ef1c v\u1eefng ch\u1eafc. Tr\u00e1i ng\u01b0\u1ee3c v\u1edbi \u0111\u00f3, NoSQL, d\u00f9 m\u1edbi m\u1ebb nh\u01b0ng nhanh ch\u00f3ng thu h\u00fat s\u1ef1 ch\u00fa \u00fd b\u1edfi kh\u1ea3 n\u0103ng linh ho\u1ea1t v\u00e0 hi\u1ec7u su\u1ea5t cao. B\u00e0i vi\u1ebft n\u00e0y gi\u00fap b\u1ea1n hi\u1ec3u c\u01a1 b\u1ea3n v\u1ec1 RDBMS vs NoSQL, c\u0169ng nh\u01b0 nh\u00ecn v\u00e0o m\u1ed1i t\u01b0\u01a1ng quan v\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa ch\u00fang.<\/strong><\/em><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u1ecdc b\u00e0i vi\u1ebft n\u00e0y \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1:<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">RDBMS l\u00e0 g\u00ec?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">NoSQL l\u00e0 g\u00ec?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u01b0\u01a1ng quan v\u00e0 ph\u00e2n bi\u1ec7t s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa RDBMS vs NoSQL<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"RDBMS_vs_NoSQL_Dinh_nghia\"><\/span><b>RDBMS vs NoSQL: \u0110\u1ecbnh ngh\u0129a<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3>RDBMS l\u00e0 g\u00ec?<\/h3>\n<p><span style=\"font-weight: 400;\">RDBMS l\u00e0 t\u1eeb vi\u1ebft t\u1eaft c\u1ee7a Relational Database Management System, hay h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u d\u1ea1ng quan h\u1ec7. Trong RDBMS, d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef d\u01b0\u1edbi d\u1ea1ng c\u00e1c h\u00e0ng v\u00e0 c\u1ed9t trong c\u00e1c b\u1ea3ng. M\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c b\u1ea3ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh th\u00f4ng qua c\u1ed9t kh\u00f3a ch\u00ednh v\u00e0 kh\u00f3a ngo\u1ea1i.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">SQL (Structured Query Language) l\u00e0 m\u1ed9t ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c t\u00e1c v\u1ee5 nh\u01b0 c\u1eadp nh\u1eadt d\u1eef li\u1ec7u tr\u00ean c\u01a1 s\u1edf d\u1eef li\u1ec7u ho\u1eb7c truy xu\u1ea5t d\u1eef li\u1ec7u t\u1eeb c\u01a1 s\u1edf d\u1eef li\u1ec7u. M\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 ph\u1ed5 bi\u1ebfn s\u1eed d\u1ee5ng SQL bao g\u1ed3m: <a href=\"https:\/\/itviec.com\/blog\/oracle-la-gi\/\" target=\"_blank\" rel=\"noopener\">Oracle<\/a>, Sybase, Microsoft SQL Server, Access.<\/span><\/p>\n<blockquote><p><em>T\u00ecm hi\u1ec3u th\u00eam: <a href=\"https:\/\/itviec.com\/blog\/sql-la-gi\/\" target=\"_blank\" rel=\"noopener\"><strong>Truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 g\u00ec? T\u1ea5t t\u1ea7n t\u1eadt v\u1ec1 ng\u00f4n ng\u1eef SQL \u0111\u1ec1u n\u1eb1m trong b\u00e0i vi\u1ebft n\u00e0y<\/strong><\/a><\/em><\/p><\/blockquote>\n<h3><b>NoSQL l\u00e0 g\u00ec?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">NoSQL, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 &#8220;Not Only SQL&#8221;, l\u00e0 m\u1ed9t lo\u1ea1i c\u01a1 s\u1edf d\u1eef li\u1ec7u phi quan h\u1ec7 kh\u00f4ng s\u1eed d\u1ee5ng c\u00e1c kh\u00e1i ni\u1ec7m v\u1ec1 b\u1ea3ng, tr\u01b0\u1eddng (field) v\u00e0 c\u1ed9t nh\u01b0 trong c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7. Thay v\u00e0o \u0111\u00f3, NoSQL cho ph\u00e9p l\u01b0u tr\u1eef d\u1eef li\u1ec7u kh\u00f4ng c\u1ea5u tr\u00fac v\u00e0 kh\u00f4ng schema trong c\u00e1c collections v\u00e0 n\u00fat (nodes), kh\u00f4ng y\u00eau c\u1ea7u c\u00e1c b\u1ea3ng c\u1ed1 \u0111\u1ecbnh, h\u1ed7 tr\u1ee3 c\u00e1c truy v\u1ea5n join gi\u1edbi h\u1ea1n, v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng \u0111a chi\u1ec1u.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">C\u00e1c lo\u1ea1i c\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL bao g\u1ed3m:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u01a1 s\u1edf d\u1eef li\u1ec7u t\u00e0i li\u1ec7u Document<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u01a1 s\u1edf d\u1eef li\u1ec7u Key-value<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u01a1 s\u1edf d\u1eef li\u1ec7u Graph<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u01a1 s\u1edf d\u1eef li\u1ec7u Family-Column<\/span><\/li>\n<\/ul>\n<blockquote><p><em><span style=\"font-weight: 400;\">T\u00ecm hi\u1ec3u th\u00eam: <strong><a href=\"https:\/\/itviec.com\/blog\/cac-loai-co-so-du-lieu-nosql\/\" target=\"_blank\" rel=\"noopener\">C\u00e1c lo\u1ea1i c\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL<\/a><\/strong><\/span><\/em><\/p><\/blockquote>\n<h2><span class=\"ez-toc-section\" id=\"RDBMS_vs_NoSQL_8_yeu_to_khac_biet\"><\/span><b>RDBMS vs NoSQL: 8 y\u1ebfu t\u1ed1 kh\u00e1c bi\u1ec7t<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>Kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef c\u1ee7a RDBMS vs NoSQL<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>NoSQL:<\/b><span style=\"font-weight: 400;\"> Th\u01b0\u1eddng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u theo \u0111\u1ecbnh d\u1ea1ng kh\u00f4ng c\u1ea5u tr\u00fac, gi\u00fap gi\u1ea3m y\u00eau c\u1ea7u l\u01b0u tr\u1eef v\u00ec d\u1eef li\u1ec7u kh\u00f4ng c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef theo c\u00e1ch nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 truy xu\u1ea5t m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>RDBMS: <\/b><span style=\"font-weight: 400;\">\u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u theo \u0111\u1ecbnh d\u1ea1ng c\u1ea5u tr\u00fac d\u1eabn \u0111\u1ebfn vi\u1ec7c c\u00f3 nhi\u1ec1u y\u00eau c\u1ea7u l\u01b0u tr\u1eef h\u01a1n. T\u1ee9c l\u00e0 khi l\u01b0u tr\u1eef d\u1eef li\u1ec7u, ch\u00fang ta ph\u1ea3i tu\u00e2n th\u1ee7 m\u1ed9t c\u1ea5u tr\u00fac nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o vi\u1ec7c truy xu\u1ea5t d\u1eef li\u1ec7u di\u1ec5n ra m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">T\u00f3m l\u1ea1i, s\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa RDBMS v\u00e0 NoSQL l\u00e0 c\u00e1ch m\u00e0 ch\u00fang l\u01b0u tr\u1eef d\u1eef li\u1ec7u: RDBMS theo c\u00e1ch c\u00f3 c\u1ea5u tr\u00fac v\u00e0 NoSQL theo c\u00e1ch kh\u00f4ng c\u1ea5u tr\u00fac. \u0110i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1ch m\u00e0 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c v\u00e0 l\u01b0u tr\u1eef, c\u0169ng nh\u01b0 y\u00eau c\u1ea7u l\u01b0u tr\u1eef c\u1ee7a h\u1ec7 th\u1ed1ng.<\/span><\/p>\n<h3><b>\u0110\u1ed9 linh ho\u1ea1t v\u1ec1 schema <\/b><b style=\"font-size: 16px;\">c\u1ee7a RDBMS vs NoSQL<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>NoSQL:<\/b><span style=\"font-weight: 400;\"> cho ph\u00e9p d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i tu\u00e2n theo m\u1ed9t c\u1ea5u tr\u00fac schema c\u1ee5 th\u1ec3 tr\u01b0\u1edbc \u0111\u00f3. \u0110i\u1ec1u n\u00e0y c\u00f3 \u00fd ngh\u0129a l\u00e0 b\u1ea1n c\u00f3 th\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u t\u1eeb c\u00e1c ngu\u1ed3n kh\u00e1c nhau m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc c\u00e1c thu\u1ed9c t\u00ednh c\u1ee5 th\u1ec3 c\u1ee7a d\u1eef li\u1ec7u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>RDBMS:<\/b><span style=\"font-weight: 400;\"> Cung c\u1ea5p m\u1ee9c \u0111\u1ed9 linh ho\u1ea1t v\u1ec1 schema \u00edt h\u01a1n so v\u1edbi NoSQL, ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng v\u1edbi c\u1ea5u tr\u00fac d\u1eef li\u1ec7u c\u1ed1 \u0111\u1ecbnh v\u00e0 \u0111\u00e3 bi\u1ebft tr\u01b0\u1edbc.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">M\u1ed9t v\u00ed d\u1ee5 v\u1ec1 t\u00ednh linh ho\u1ea1t schema l\u00e0 trong tr\u01b0\u1eddng h\u1ee3p b\u1ea1n tri\u1ec3n khai m\u1ed9t n\u1ec1n t\u1ea3ng <a href=\"https:\/\/itviec.com\/blog\/iot-la-gi\/\" target=\"_blank\" rel=\"noopener\">IoT<\/a> l\u01b0u tr\u1eef d\u1eef li\u1ec7u t\u1eeb c\u00e1c lo\u1ea1i c\u1ea3m bi\u1ebfn kh\u00e1c nhau, NoSQL c\u00f3 th\u1ec3 l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n. \u0110i\u1ec1u n\u00e0y l\u00e0 do b\u1ea1n kh\u00f4ng bi\u1ebft tr\u01b0\u1edbc v\u1ec1 c\u00e1c thu\u1ed9c t\u00ednh c\u1ee5 th\u1ec3 c\u1ee7a d\u1eef li\u1ec7u v\u00e0 ch\u00fang c\u00f3 th\u1ec3 thay \u0111\u1ed5i khi \u1ee9ng d\u1ee5ng ph\u00e1t tri\u1ec3n. Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu b\u1ea1n tri\u1ec3n khai m\u1ed9t \u1ee9ng d\u1ee5ng web \u0111\u01a1n gi\u1ea3n v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c thu\u1ed9c t\u00ednh c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111\u00e3 bi\u1ebft tr\u01b0\u1edbc, RDBMS c\u00f3 th\u1ec3 l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n v\u00ec n\u00f3 y\u00eau c\u1ea7u m\u1ed9t c\u1ea5u tr\u00fac schema c\u1ee5 th\u1ec3.<\/span><\/p>\n<h3><b>Y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ecdc d\u1eef li\u1ec7u c\u1ee7a RDBMS vs NoSQL<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>NoSQL:<\/b><span style=\"font-weight: 400;\"> Th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn \u0111\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u d\u01b0\u1edbi d\u1ea1ng s\u1ebd \u0111\u01b0\u1ee3c ti\u00eau th\u1ee5, t\u1ee9c l\u00e0 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c \u0111\u1ec3 ph\u1ea3n \u00e1nh c\u00e1ch m\u00e0 \u1ee9ng d\u1ee5ng ho\u1eb7c h\u1ec7 th\u1ed1ng s\u1ebd s\u1eed d\u1ee5ng n\u00f3. V\u00ed d\u1ee5, n\u1ebfu b\u1ea1n \u0111ang t\u1ea1o m\u1ed9t gi\u1ea3i ph\u00e1p b\u00e1o c\u00e1o, b\u1ea1n c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn l\u01b0u tr\u1eef d\u1eef li\u1ec7u cho c\u00e1c b\u00e1o c\u00e1o c\u1ee5 th\u1ec3 trong c\u00e1c b\u1ea3ng kh\u00e1c nhau v\u00e0 truy c\u1eadp ch\u00fang th\u00f4ng qua c\u00e1c c\u00e2u l\u1ec7nh select \u0111\u01a1n gi\u1ea3n. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, c\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL c\u00f3 th\u1ec3 l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>RDBMS:<\/b><span style=\"font-weight: 400;\"> Th\u01b0\u1eddng x\u1eed l\u00fd t\u1ed1t c\u00e1c truy v\u1ea5n ph\u1ee9c t\u1ea1p v\u00e0 thao t\u00e1c k\u1ebft h\u1ee3p d\u1eef li\u1ec7u t\u1eeb nhi\u1ec1u b\u1ea3ng th\u00f4ng qua c\u00e1c ph\u00e9p n\u1ed1i (join). \u0110i\u1ec1u n\u00e0y l\u00e0m cho RDBMS th\u00edch h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng ho\u1eb7c h\u1ec7 th\u1ed1ng y\u00eau c\u1ea7u ph\u1ee9c t\u1ea1p v\u1ec1 truy xu\u1ea5t d\u1eef li\u1ec7u. Ti\u1ebfp t\u1ee5c v\u1edbi v\u00ed d\u1ee5 tr\u00ean, b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u c\u01a1 b\u1ea3n trong m\u1ed9t s\u1ed1 b\u1ea3ng li\u00ean quan nh\u1ecf v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c truy v\u1ea5n v\u00e0 t\u1ed5ng h\u1ee3p kh\u00e1c nhau \u0111\u1ec3 t\u1ea1o ra c\u00e1c b\u00e1o c\u00e1o kh\u00e1c nhau. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y th\u00ec RDBMS s\u1ebd ph\u00f9 h\u1ee3p h\u01a1n.<\/span><\/li>\n<\/ul>\n<h3><b>\u0110\u1ed9 nh\u1ea5t qu\u00e1n d\u1eef li\u1ec7u c\u1ee7a RDBMS vs NoSQL<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>NoSQL:<\/b><span style=\"font-weight: 400;\"> C\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL th\u01b0\u1eddng d\u1ef1a v\u00e0o t\u00ednh nh\u1ea5t qu\u00e1n cu\u1ed1i c\u00f9ng (eventual consistency &#8211; 1 d\u1ea1ng c\u1ee7a weak consistency) khi th\u1ef1c hi\u1ec7n c\u00e1c ghi v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 sau khi m\u1ed9t ghi (write) \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n, d\u1eef li\u1ec7u c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt ngay l\u1eadp t\u1ee9c tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c n\u00fat (nodes) trong h\u1ec7 th\u1ed1ng NoSQL. C\u00f3 m\u1ed9t kh\u1ea3 n\u0103ng r\u1eb1ng \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ecdc d\u1eef li\u1ec7u c\u0169 cho \u0111\u1ebfn khi c\u00e1c ghi \u0111\u01b0\u1ee3c lan truy\u1ec1n (propagated) \u0111\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c n\u00fat. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra t\u00ecnh tr\u1ea1ng m\u1ea5t t\u00ednh nh\u1ea5t qu\u00e1n trong d\u1eef li\u1ec7u khi c\u00e1c thao t\u00e1c ghi v\u00e0 \u0111\u1ecdc di\u1ec5n ra \u0111\u1ed3ng th\u1eddi tr\u00ean c\u00e1c n\u00fat kh\u00e1c nhau trong h\u1ec7 th\u1ed1ng NoSQL.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>RDBMS:<\/b><span style=\"font-weight: 400;\"> RDBMS n\u1ed5i ti\u1ebfng v\u1edbi kh\u1ea3 n\u0103ng \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a d\u1eef li\u1ec7u. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 khi b\u1ea1n th\u1ef1c hi\u1ec7n c\u00e1c ghi (write) v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u, d\u1eef li\u1ec7u s\u1ebd \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt ngay l\u1eadp t\u1ee9c v\u00e0 s\u1ebd c\u00f3 s\u1eb5n cho vi\u1ec7c \u0111\u1ecdc (read) ngay sau \u0111\u00f3. RDBMS th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c giao th\u1ee9c v\u00e0 c\u01a1 ch\u1ebf \u0111\u1ed3ng b\u1ed9 h\u00f3a \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt m\u1ed9t c\u00e1ch nh\u1ea5t qu\u00e1n tr\u00ean to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">V\u1ec1 c\u01a1 b\u1ea3n, RDBMS c\u00f3 xu h\u01b0\u1edbng cung c\u1ea5p t\u00ednh nh\u1ea5t qu\u00e1n cao h\u01a1n so v\u1edbi NoSQL, v\u00ed d\u1ee5 trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p nh\u01b0 c\u00e1c giao d\u1ecbch d\u00e0i h\u1ea1n. Tuy c\u00e1c h\u1ec7 th\u1ed1ng NoSQL nh\u01b0 MongoDB c\u0169ng \u0111\u00e3 b\u1eaft \u0111\u1ea7u h\u1ed7 tr\u1ee3 giao d\u1ecbch (transaction) nh\u01b0ng v\u1eabn c\u00f3 h\u1ea1n ch\u1ebf trong th\u1eddi gian giao d\u1ecbch. Do \u0111\u00f3, n\u1ebfu y\u00eau c\u1ea7u d\u1eef li\u1ec7u nh\u1ea5t qu\u00e1n gi\u1eefa c\u00e1c thao t\u00e1c \u0111\u1ecdc v\u00e0 ghi, ho\u1eb7c c\u1ea7n h\u1ed7 tr\u1ee3 giao d\u1ecbch d\u00e0i h\u1ea1n, th\u00ec RDBMS c\u00f3 th\u1ec3 l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t.<\/span><\/p>\n<h3><b>Hi\u1ec7u su\u1ea5t ghi c\u1ee7a RDBMS vs NoSQL<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>NoSQL:<\/b><span style=\"font-weight: 400;\"> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng cao v\u00e0 cung c\u1ea5p hi\u1ec7u su\u1ea5t ghi d\u1eef li\u1ec7u cao. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 NoSQL c\u00f3 th\u1ec3 hy sinh t\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 b\u1ec1n v\u1eefng c\u1ee7a d\u1eef li\u1ec7u \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau v\u1ec1 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng. Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, vi\u1ec7c ghi d\u1eef li\u1ec7u nhanh ch\u00f3ng v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL c\u00f3 th\u1ec3 l\u00e0 \u01b0u ti\u00ean quan tr\u1ecdng h\u01a1n t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a d\u1eef li\u1ec7u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>RDBMS:<\/b><span style=\"font-weight: 400;\"> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ghi d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch nguy\u00ean t\u1eed (atomic), nh\u1ea5t qu\u00e1n (consistent) v\u00e0 b\u1ec1n v\u1eefng (durable). \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 khi d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ghi v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7, n\u00f3 \u0111\u01b0\u1ee3c ghi m\u1ed9t c\u00e1ch ho\u00e0n ch\u1ec9nh v\u00e0 ch\u00ednh x\u00e1c, v\u00e0 kh\u00f4ng b\u1ecb m\u1ea5t ho\u1eb7c h\u1ecfng trong tr\u01b0\u1eddng h\u1ee3p m\u1ea5t \u0111i\u1ec7n ho\u1eb7c s\u1ef1 c\u1ed1 h\u1ec7 th\u1ed1ng. T\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 b\u1ec1n v\u1eefng c\u1ee7a d\u1eef li\u1ec7u l\u00e0 \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u trong RDBMS.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Khi l\u1ef1a ch\u1ecdn c\u01a1 s\u1edf d\u1eef li\u1ec7u cho \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n, b\u1ea1n c\u1ea7n xem x\u00e9t c\u1ea9n th\u1eadn v\u1ec1 y\u00eau c\u1ea7u v\u1ec1 hi\u1ec7u su\u1ea5t ghi d\u1eef li\u1ec7u. C\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL th\u01b0\u1eddng cung c\u1ea5p t\u1ed1c \u0111\u1ed9 ghi nhanh h\u01a1n so v\u1edbi RDBMS, nh\u01b0ng c\u00f3 th\u1ec3 \u0111\u1ed5i l\u1ea1i b\u1eb1ng t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a d\u1eef li\u1ec7u. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 kh\u00f4ng ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c trong m\u1ecdi tr\u01b0\u1eddng h\u1ee3p nh\u01b0ng c\u00f3 th\u1ec3 \u0111\u00e1ng \u0111\u1ed1i m\u1eb7t trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p kh\u00e1c. \u0110\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh, c\u1ea7n xem x\u00e9t k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ebfn nhu c\u1ea7u c\u1ee7a \u1ee9ng d\u1ee5ng.<\/span><\/p>\n<h3><b>Y\u00eau v\u1ec1 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u1ee7a RDBMS vs NoSQL<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>NoSQL:<\/b><span style=\"font-weight: 400;\"> C\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL th\u01b0\u1eddng \u0111\u01b0\u1ee3c ca ng\u1ee3i v\u00ec kh\u1ea3 n\u0103ng ch\u1ea1y tr\u00ean ph\u1ea7n c\u1ee9ng gi\u00e1 r\u1ebb v\u00e0 c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng theo chi\u1ec1u ngang (horizontal scaling). \u0110i\u1ec1u n\u00e0y mang l\u1ea1i m\u1ed9t l\u1ee3i th\u1ebf v\u1ec1 chi ph\u00ed l\u1edbn h\u01a1n so v\u1edbi c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi x\u1eed l\u00fd c\u00e1c kh\u1ed1i l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>RDBMS:<\/b><span style=\"font-weight: 400;\"> Ng\u01b0\u1ee3c l\u1ea1i v\u1edbi NoSQL, c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 th\u01b0\u1eddng \u0111\u00f2i h\u1ecfi s\u1eed d\u1ee5ng ph\u1ea7n c\u1ee9ng \u0111\u1eaft ti\u1ec1n v\u00e0 \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c kh\u1ed1i l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn. C\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 th\u01b0\u1eddng y\u00eau c\u1ea7u s\u1ef1 \u0111\u1ea7u t\u01b0 l\u1edbn v\u00e0o ph\u1ea7n c\u1ee9ng v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh s\u1eb5n s\u00e0ng cao.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Tuy nhi\u00ean, \u0111i\u1ec1u n\u00e0y ch\u1ec9 \u0111\u00fang khi kh\u1ed1i l\u01b0\u1ee3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n \u0111\u1ee7 l\u1edbn \u0111\u1ec3 c\u1ea7n s\u1eed d\u1ee5ng c\u01a1 s\u1edf d\u1eef li\u1ec7u ph\u00e2n t\u00e1n (distributed database) t\u1eeb \u0111\u1ea7u. V\u1edbi c\u00e1c kh\u1ed1i l\u01b0\u1ee3ng d\u1eef li\u1ec7u \u1edf m\u1ee9c terabyte, c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 v\u1eabn c\u00f3 th\u1ec3 l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t do ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c t\u00e1c v\u1ee5 x\u1eed l\u00fd ph\u1ee9c t\u1ea1p v\u00e0 y\u00eau c\u1ea7u m\u1ed9t c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1nh m\u1ebd \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t.<\/span><\/p>\n<h3><b>Kh\u1ed1i l\u01b0\u1ee3ng d\u1eef li\u1ec7u c\u1ee7a RDBMS vs NoSQL<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>NoSQL:<\/b><span style=\"font-weight: 400;\">\u00a0 NoSQL \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c t\u00e1c v\u1ee5 li\u00ean quan \u0111\u1ebfn d\u1eef li\u1ec7u l\u1edbn v\u00e0 kh\u00f4ng c\u1ea5u tr\u00fac. V\u1edbi terabyte data, c\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL c\u00f3 th\u1ec3 cung c\u1ea5p hi\u1ec7u su\u1ea5t t\u1ed1t h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng linh ho\u1ea1t h\u01a1n so v\u1edbi RDBMS. Tuy nhi\u00ean, c\u1ea7n xem x\u00e9t y\u00eau c\u1ea7u ph\u1ea7n c\u1ee9ng c\u1ee7a NoSQL. M\u1ed9t s\u1ed1 c\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL c\u00f3 th\u1ec3 y\u00eau c\u1ea7u m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng t\u1ed1i thi\u1ec3u c\u00e1c n\u00fat \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u01b0u, do \u0111\u00f3 b\u1ea1n c\u1ea7n \u0111\u1ea3m b\u1ea3o c\u00f3 \u0111\u1ee7 t\u00e0i nguy\u00ean ph\u1ea7n c\u1ee9ng tr\u01b0\u1edbc khi ch\u1ecdn c\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>RDBMS:<\/b><span style=\"font-weight: 400;\"> RDBMS th\u01b0\u1eddng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c t\u00e1c v\u1ee5 li\u00ean quan \u0111\u1ebfn d\u1eef li\u1ec7u c\u00f3 c\u1ea5u tr\u00fac v\u00e0 khi l\u00e0m vi\u1ec7c v\u1edbi l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn, RDBMS c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi x\u1eed l\u00fd terabyte data.\u00a0<\/span><\/li>\n<\/ul>\n<h3><b>ACID v\u00e0 BASE<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">ACID v\u00e0 BASE l\u00e0 hai m\u00f4 h\u00ecnh c\u01a1 s\u1edf d\u1eef li\u1ec7u m\u00e0 c\u1ed1 g\u1eafng gi\u1ea3i quy\u1ebft c\u00e1c h\u1ea1n ch\u1ebf c\u1ee7a \u0111\u1ecbnh l\u00fd CAP theo c\u00e1ch kh\u00e1c nhau. Trong \u0111\u00f3:<\/span><\/p>\n<p><strong>ACID (\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi RDBMS):<\/strong><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Atomicity: \u0110\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed7i giao d\u1ecbch s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n ho\u00e0n to\u00e0n ho\u1eb7c kh\u00f4ng th\u1ef1c hi\u1ec7n g\u00ec c\u1ea3, kh\u00f4ng c\u00f3 tr\u1ea1ng th\u00e1i trung gian.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Consistency: \u0110\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ghi v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 h\u1ee3p l\u1ec7 v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy t\u1eafc \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Isolation: \u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c giao d\u1ecbch kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c giao d\u1ecbch kh\u00e1c \u0111ang \u0111\u01b0\u1ee3c th\u1ef1c thi \u0111\u1ed3ng th\u1eddi.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Durability: B\u1ea3o \u0111\u1ea3m r\u1eb1ng khi m\u1ed9t giao d\u1ecbch ho\u00e0n th\u00e0nh th\u00e0nh c\u00f4ng, n\u00f3 s\u1ebd kh\u00f4ng b\u1ecb m\u1ea5t ngay c\u1ea3 khi x\u1ea3y ra s\u1ef1 c\u1ed1 nh\u01b0 m\u1ea5t \u0111i\u1ec7n.<\/span><\/li>\n<\/ul>\n<p><strong>BASE (\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL):<\/strong><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Basically Available: \u0111\u1ea3m b\u1ea3o r\u1eb1ng h\u1ec7 th\u1ed1ng lu\u00f4n s\u1eb5n s\u00e0ng \u0111\u1ec3 ph\u1ea3n h\u1ed3i y\u00eau c\u1ea7u t\u1eeb c\u00e1c \u1ee9ng d\u1ee5ng, ngay c\u1ea3 khi c\u00f3 s\u1ef1 c\u1ed1 x\u1ea3y ra. Thay v\u00ec \u0111\u00f2i h\u1ecfi s\u1ef1 nh\u1ea5t qu\u00e1n trong th\u1eddi gian th\u1ef1c, BASE s\u1ebd sao ch\u00e9p d\u1eef li\u1ec7u tr\u00ean c\u00e1c n\u00fat trong c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u lu\u00f4n s\u1eb5n s\u00e0ng v\u00e0 truy c\u1eadp \u0111\u01b0\u1ee3c.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Soft State: V\u00ec kh\u00f4ng c\u00f3 s\u1ef1 nh\u1ea5t qu\u00e1n trong th\u1eddi gian th\u1ef1c trong h\u1ec7 th\u1ed1ng BASE, c\u00e1c gi\u00e1 tr\u1ecb d\u1eef li\u1ec7u c\u00f3 th\u1ec3 thay \u0111\u1ed5i theo th\u1eddi gian.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Eventually Consistent: BASE kh\u00f4ng \u00e9p bu\u1ed9c s\u1ef1 nh\u1ea5t qu\u00e1n d\u1eef li\u1ec7u trong th\u1eddi gian th\u1ef1c nh\u01b0ng v\u1eabn c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y. N\u00f3 c\u0169ng cho ph\u00e9p \u0111\u1ecdc d\u1eef li\u1ec7u ngay c\u1ea3 khi n\u00f3 ch\u01b0a \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 nh\u1ea5t qu\u00e1n.<\/span><\/li>\n<\/ul>\n<h3><b>T\u00f3m t\u1eaft so s\u00e1nh RDBMS vs NoSQL<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td>\n<p style=\"text-align: left;\"><b>NoSQL<\/b><\/p>\n<\/td>\n<td style=\"text-align: left;\"><b>RDBMS<\/b><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><span style=\"font-weight: 400;\">Kh\u00f4ng y\u00eau c\u1ea7u schema c\u1ed1 \u0111\u1ecbnh.<\/span><\/td>\n<td>\n<p style=\"text-align: left;\"><span style=\"font-weight: 400;\">Y\u00eau c\u1ea7u schema.<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: left;\"><span style=\"font-weight: 400;\">Ch\u1ec9 \u0111\u1ea1t t\u00ednh nh\u1ea5t qu\u00e1n cu\u1ed1i c\u00f9ng (<\/span><span style=\"font-weight: 400;\">eventually consistent &#8211; m\u1ed9t d\u1ea1ng weak consistent)<\/span><\/p>\n<\/td>\n<td style=\"text-align: left;\"><span style=\"font-weight: 400;\">Tu\u00e2n th\u1ee7 c\u00e1c thu\u1ed9c t\u00ednh ACID (Atomicity, Consistency, Isolation, Durability)<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><span style=\"font-weight: 400;\">Kh\u00f4ng c\u00f3 c\u01a1 ch\u1ebf t\u1ef1 \u0111\u1ed9ng \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c thay \u0111\u1ed5i trong d\u1eef li\u1ec7u s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n m\u1ed9t c\u00e1ch an to\u00e0n v\u00e0 \u0111\u1ed3ng nh\u1ea5t.<\/span><\/td>\n<td>\n<p style=\"text-align: left;\"><span style=\"font-weight: 400;\">\u0110\u1ea3m b\u1ea3o c\u00e1c thay \u0111\u1ed5i trong d\u1eef li\u1ec7u s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ed3ng nh\u1ea5t v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u, ngay c\u1ea3 trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p ph\u1ee9c t\u1ea1p s\u1eed d\u1ee5ng c\u00e1c ph\u00e9p n\u1ed1i \u0111\u1ec3 k\u1ebft h\u1ee3p d\u1eef li\u1ec7u t\u1eeb nhi\u1ec1u b\u1ea3ng.<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: left;\"><span style=\"font-weight: 400;\">Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ghi v\u1edbi t\u1ed1c \u0111\u1ed9 cao.<\/span><\/p>\n<\/td>\n<td style=\"text-align: left;\"><span style=\"font-weight: 400;\">Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ghi v\u1edbi t\u1ed1c \u0111\u1ed9 th\u1ea5p.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><span style=\"font-weight: 400;\">C\u00f3 th\u1ec3 x\u1eed l\u00fd d\u1eef li\u1ec7u l\u1edbn ho\u1eb7c r\u1ea5t l\u1edbn.<\/span><\/td>\n<td>\n<p style=\"text-align: left;\"><span style=\"font-weight: 400;\">C\u00f3 th\u1ec3 x\u1eed l\u00fd d\u1eef li\u1ec7u c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng trung b\u00ecnh.<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: left;\"><span style=\"font-weight: 400;\">D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c thu th\u1eadp t\u1eeb nhi\u1ec1u ngu\u1ed3n kh\u00e1c nhau, c\u00f3 th\u1ec3 l\u00e0 t\u1eeb c\u00e1c \u1ee9ng d\u1ee5ng web, thi\u1ebft b\u1ecb IoT, m\u00e1y ch\u1ee7, ho\u1eb7c c\u00e1c ngu\u1ed3n d\u1eef li\u1ec7u kh\u00e1c tr\u00ean internet.<\/span><\/p>\n<\/td>\n<td style=\"text-align: left;\"><span style=\"font-weight: 400;\">D\u1eef li\u1ec7u th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c v\u00e0 nh\u1eadp v\u00e0o t\u1eeb m\u1ed9t s\u1ed1 \u00edt ngu\u1ed3n d\u1eef li\u1ec7u, c\u00f3 th\u1ec3 l\u00e0 t\u1eeb c\u00e1c \u1ee9ng d\u1ee5ng ho\u1eb7c h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd b\u1edfi c\u00f9ng m\u1ed9t t\u1ed5 ch\u1ee9c ho\u1eb7c doanh nghi\u1ec7p.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><span style=\"font-weight: 400;\">C\u00f3 th\u1ec3 x\u1eed l\u00fd d\u1eef li\u1ec7u c\u00f3 c\u1ea5u tr\u00fac, b\u00e1n c\u1ea5u tr\u00fac, phi c\u1ea5u tr\u00fac. Ch\u1ec9 c\u00f3 th\u1ec3 th\u1ed1ng k\u00ea c\u01a1 b\u1ea3n.<\/span><\/td>\n<td>\n<p style=\"text-align: left;\"><span style=\"font-weight: 400;\">Ch\u1ec9 x\u1eed l\u00fd \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u c\u00f3 c\u1ea5u tr\u00fac. Nh\u01b0ng c\u00f3 th\u1ec3 x\u1eed l\u00fd v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea.<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: left;\"><span style=\"font-weight: 400;\">\u0110\u1ea3m b\u1ea3o t\u00ednh kh\u1ea3 d\u1ee5ng ho\u1eb7c s\u1ef1 to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u v\u00ec d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7 ho\u1eb7c n\u00fat.<\/span><\/p>\n<\/td>\n<td style=\"text-align: left;\"><span style=\"font-weight: 400;\">Kh\u00f4ng \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1ee3c t\u00ednh kh\u1ea3 d\u1ee5ng v\u00e0 s\u1ef1 to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u nh\u01b0 NoSQL nh\u01b0ng c\u00f3 c\u01a1 ch\u1ebf failover khi c\u00f3 s\u1ef1 c\u1ed1 x\u1ea3y ra.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><span style=\"font-weight: 400;\">C\u00f3 c\u1ea5u tr\u00fac ph\u00e2n t\u00e1n.<\/span><\/td>\n<td>\n<p style=\"text-align: left;\"><span style=\"font-weight: 400;\">C\u00f3 c\u1ea5u tr\u00fac t\u1eadp trung.<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: left;\"><span style=\"font-weight: 400;\">Cung c\u1ea5p kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng c\u1ea3 trong vi\u1ec7c \u0111\u1ecdc v\u00e0 ghi d\u1eef li\u1ec7u.<\/span><\/p>\n<\/td>\n<td style=\"text-align: left;\"><span style=\"font-weight: 400;\">Ch\u1ec9 cung c\u1ea5p kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng trong vi\u1ec7c \u0111\u1ecdc d\u1eef li\u1ec7u.<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\"><span style=\"font-weight: 400;\">Th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng theo chi\u1ec1u ngang.<\/span><\/td>\n<td>\n<p style=\"text-align: left;\"><span style=\"font-weight: 400;\">Th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng theo chi\u1ec1u d\u1ecdc.<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: left;\"><span style=\"font-weight: 400;\">Thu\u1eadt to\u00e1n t\u00ecm ki\u1ebfm t\u1eeb kh\u00f3a tr\u00ean to\u00e0n b\u1ed9 d\u1eef li\u1ec7u ch\u1ea1y t\u1ed1t h\u01a1n tr\u00ean NoSQL<\/span><\/p>\n<\/td>\n<td>\n<p style=\"text-align: left;\"><span style=\"font-weight: 400;\">Thu\u1eadt to\u00e1n v\u1ec1 th\u1ed1ng k\u00ea nh\u01b0 m\u00f4 t\u1ea3, d\u1ef1 \u0111o\u00e1n, ph\u00e2n nh\u00f3m, t\u01b0\u01a1ng quan, tr\u1ef1c quan ho\u00e1 d\u1eef li\u1ec7u ch\u1ec9 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng tr\u00ean RDBMS\u00a0<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"Cac_truong_hop_su_dung_RDBMS_vs_NoSQL\"><\/span><b>C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng RDBMS vs NoSQL<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<table>\n<tbody>\n<tr>\n<td>\n<p style=\"text-align: left;\"><b>NoSQL<\/b><\/p>\n<\/td>\n<td style=\"text-align: left;\"><b>RDBMS<\/b><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\">Khi kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c l\u1edbn \u0111\u00f2i h\u1ecfi \u0111\u1ed9 tr\u1ec5 c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c \u1edf quy m\u00f4 l\u1edbn (v\u00ed d\u1ee5: \u0111\u1ed9 tr\u1ec5 \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng mili gi\u00e2y trong khi th\u1ef1c hi\u1ec7n h\u00e0ng tri\u1ec7u giao d\u1ecbch m\u1ed7i gi\u00e2y).<\/td>\n<td>\n<p style=\"text-align: left;\">Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c \u1edf m\u1ee9c \u0111\u1ed9 trung b\u00ecnh \u0111\u1ebfn cao, trong \u0111\u00f3 s\u1ed1 l\u01b0\u1ee3ng giao d\u1ecbch x\u1eed l\u00fd trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh c\u00f3 th\u1ec3 \u0111\u1ea1t h\u00e0ng ngh\u00ecn giao d\u1ecbch (transaction) m\u1ed7i gi\u00e2y.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: left;\">Khi d\u1eef li\u1ec7u th\u01b0\u1eddng c\u00f3 t\u00ednh ch\u1ea5t linh ho\u1ea1t v\u00e0 thay \u0111\u1ed5i th\u01b0\u1eddng xuy\u00ean.<\/p>\n<p style=\"text-align: left;\">V\u00ed d\u1ee5: \u0111\u0103ng b\u00e0i b\u00e0i vi\u1ebft m\u1edbi \u0111\u0103ng tr\u00ean b\u00e1o \u0111i\u1ec7n t\u1eed.<\/p>\n<\/td>\n<td style=\"text-align: left;\">Khi d\u1eef li\u1ec7u th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c theo m\u1ed9t c\u1ea5u tr\u00fac c\u1ee5 th\u1ec3 v\u00e0 y\u00eau c\u1ea7u t\u00ednh to\u00e0n v\u1eb9n tham chi\u1ebfu.<\/p>\n<p>V\u00ed d\u1ee5: h\u1ec7 th\u1ed1ng ng\u00e2n h\u00e0ng l\u01b0u giao d\u1ecbch chuy\u1ec3n ti\u1ec1n m\u1edbi.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\">Khi quan h\u1ec7 gi\u1eefa c\u00e1c d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh h\u00f3a m\u1ed9t c\u00e1ch phi chu\u1ea9n h\u00f3a, c\u00f3 ngh\u0129a l\u00e0 c\u00e1c d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef m\u1ed9t c\u00e1ch t\u1ef1 nhi\u00ean m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i tu\u00e2n theo c\u00e1c quy t\u1eafc chu\u1ea9n h\u00f3a truy\u1ec1n th\u1ed1ng.<\/p>\n<p>V\u00ed d\u1ee5: t\u00e0i li\u1ec7u s\u1ea3n ph\u1ea9m c\u1ee7a m\u1ed9t c\u00f4ng ty.<\/td>\n<td>\n<p style=\"text-align: left;\">Khi c\u00e1c quan h\u1ec7 gi\u1eefa c\u00e1c d\u1eef li\u1ec7u th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n th\u00f4ng qua vi\u1ec7c k\u1ebft n\u1ed1i c\u00e1c b\u1ea3ng tr\u00ean c\u00e1c m\u00f4 h\u00ecnh d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a.<\/p>\n<p style=\"text-align: left;\">V\u00ed d\u1ee5: b\u1ea3ng th\u00f4ng tin kh\u00e1ch h\u00e0ng v\u00e0 b\u1ea3ng h\u00e0ng h\u00f3a.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: left;\">Khi vi\u1ec7c truy xu\u1ea5t d\u1eef li\u1ec7u th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n v\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i k\u1ebft n\u1ed1i c\u00e1c b\u1ea3ng nh\u01b0 trong c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7.<\/p>\n<p style=\"text-align: left;\">V\u00ed d\u1ee5: t\u00ecm b\u00e0i vi\u1ebft c\u00f3 t\u1eeb kho\u00e1 \u201cch\u1ee9ng kho\u00e1n\u201d.<\/p>\n<\/td>\n<td style=\"text-align: left;\">Khi ph\u1ea3i th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p truy v\u1ea5n ph\u1ee9c t\u1ea1p.<\/p>\n<p>V\u00ed d\u1ee5: t\u00ednh doanh thu trong th\u00e1ng t\u1eeb b\u1ea3ng k\u1ebf to\u00e1n<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: left;\">Khi c\u1ea7n \u0111\u1ea3m b\u1ea3o t\u00ednh s\u1eb5n c\u00f3 v\u00e0 an to\u00e0n c\u1ee7a d\u1eef li\u1ec7u.<\/p>\n<p>V\u00ed d\u1ee5: B\u00e0i vi\u1ebft tr\u00ean b\u00e1o lu\u00f4n \u0111\u01b0\u1ee3c ng\u01b0\u1eddi d\u00f9ng \u0111\u1ecdc m\u1ed7i ng\u00e0y.<\/td>\n<td>\n<p style=\"text-align: left;\">Khi kh\u00f4ng \u0111\u00f2i h\u1ecfi c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed3ng b\u1ed9 h\u00f3a realtime gi\u1eefa c\u00e1c b\u1ea3n sao d\u1eef li\u1ec7u.<\/p>\n<p style=\"text-align: left;\">V\u00ed d\u1ee5: C\u00e1c b\u1ea3ng t\u00e0i ch\u00ednh m\u1ed7i th\u00e1ng ch\u1ec9 k\u1ebft to\u00e1n m\u1ed9t l\u1ea7n.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: left;\">V\u1edbi c\u00e1c nhu c\u1ea7u tri\u1ec3n khai \u1ee9ng d\u1ee5ng tr\u00ean ph\u1ea7n c\u1ee9ng th\u00f4ng th\u01b0\u1eddng, nh\u01b0 l\u00e0 tr\u00ean c\u00e1c d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y c\u00f4ng c\u1ed9ng \u0111\u1ec3 c\u00f3 th\u1ec3 t\u1eadn d\u1ee5ng \u0111\u01b0\u1ee3c c\u00e1c t\u00e0i nguy\u00ean ph\u1ea7n c\u1ee9ng ti\u00eau chu\u1ea9n v\u00e0 d\u1ec5 d\u00e0ng m\u1edf r\u1ed9ng h\u1ec7 th\u1ed1ng theo nhu c\u1ea7u m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i lo l\u1eafng v\u1ec1 vi\u1ec7c mua s\u1eafm v\u00e0 duy tr\u00ec ph\u1ea7n c\u1ee9ng \u0111\u1eb7c bi\u1ec7t.<\/p>\n<p style=\"text-align: left;\">V\u00ed d\u1ee5: \u1ee9ng d\u1ee5ng ghi note trong \u0111i\u1ec7n tho\u1ea1i.<\/p>\n<\/td>\n<td>\n<p style=\"text-align: left;\">Khi tri\u1ec3n khai \u1ee9ng d\u1ee5ng tr\u00ean RDBMS, th\u01b0\u1eddng s\u1ebd s\u1eed d\u1ee5ng ph\u1ea7n c\u1ee9ng l\u1edbn, cao c\u1ea5p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<p style=\"text-align: left;\">V\u00ed d\u1ee5: c\u00e1c c\u00f4ng ty th\u01b0\u1eddng d\u00f9ng cloud \u0111\u1ec3 c\u00e0i RDBMS.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"Cau_hoi_thuong_gap_NoSQL_vs_RDBMS\"><\/span><b>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p NoSQL vs RDBMS<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>NoSQL t\u1ed1t h\u01a1n hay RDBMS t\u1ed1t h\u01a1n?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">S\u1ef1 l\u1ef1a ch\u1ecdn gi\u1eefa NoSQL v\u00e0 h\u1ec7 c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 ph\u1ee5 thu\u1ed9c v\u00e0o d\u1ef1 \u00e1n b\u1ea1n \u0111ang l\u00e0m. N\u1ebfu b\u1ea1n c\u1ea7n t\u00ednh m\u1edf r\u1ed9ng v\u00e0 linh ho\u1ea1t, th\u00ec h\u1ec7 c\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL c\u00f3 th\u1ec3 l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n. N\u1ebfu b\u1ea1n c\u1ea7n tu\u00e2n th\u1ee7 ACID (atomicity, consistency, isolation, and durability) th\u00ec h\u1ec7 c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 c\u00f3 th\u1ec3 l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n.<\/span><\/p>\n<h3><b>C\u00f3 ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec1u l\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Kh\u00f4ng. C\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 ho\u1eb7c c\u00f2n g\u1ecdi l\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u SQL, l\u01b0u tr\u1eef d\u1eef li\u1ec7u trong c\u00e1c b\u1ea3ng v\u1edbi c\u00e1c c\u1ed9t chung gi\u1eefa ch\u00fang (\u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 c\u00e1c kh\u00f3a ch\u00ednh v\u00e0 kh\u00f3a ngo\u1ea1i), t\u1ea1o ra c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c b\u1ea3ng. D\u1eef li\u1ec7u lu\u00f4n \u0111\u01b0\u1ee3c c\u1ea5u tr\u00fac v\u1edbi m\u1ed9t l\u01b0\u1ee3c \u0111\u1ed3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh m\u00e0 kh\u00f4ng th\u1ec3 d\u1ec5 d\u00e0ng thay \u0111\u1ed5i.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">V\u00e0 c\u00f3 c\u00e1c lo\u1ea1i c\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00e1c, trong ph\u1ea1m vi c\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00f4ng quan h\u1ec7\/NoSQL, l\u01b0u tr\u1eef d\u1eef li\u1ec7u kh\u00f4ng c\u1ea5u tr\u00fac, b\u00e1n c\u1ea5u tr\u00fac ho\u1eb7c c\u1ea5u tr\u00fac. Nh\u1eefng lo\u1ea1i n\u00e0y cho ph\u00e9p linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng s\u1eb5n c\u00f3 cao.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">M\u1ed9t s\u1ed1 v\u00ed d\u1ee5 l\u00e0 <a href=\"https:\/\/itviec.com\/blog\/mongodb-la-gi\/\" target=\"_blank\" rel=\"noopener\">MongoDB<\/a>, Cassandra v\u00e0 CouchDB.<\/span><\/p>\n<h3><b>NoSQL nhanh h\u01a1n hay RDBMS nhanh h\u01a1n?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">C\u01a1 s\u1edf d\u1eef li\u1ec7u NoSQL th\u01b0\u1eddng nhanh h\u01a1n c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7. \u0110i\u1ec1u n\u00e0y l\u00e0 do ch\u00fang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng linh ho\u1ea1t h\u01a1n v\u00e0 c\u00f3 th\u1ec3 x\u1eed l\u00fd l\u01b0\u1ee3ng l\u1edbn d\u1eef li\u1ec7u d\u1ec5 d\u00e0ng h\u01a1n.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tong_ket\"><\/span><b>T\u1ed5ng k\u1ebft<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">RDBMS hay NoSQL \u0111\u1ec1u c\u00f3 th\u1ebf m\u1ea1nh ri\u00eang v\u00e0 \u0111\u1ec1u t\u1ecfa s\u00e1ng trong l\u0129nh v\u1ef1c c\u1ee7a n\u00f3. RDBMS th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng trong c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u t\u00ednh nh\u1ea5t qu\u00e1n d\u1eef li\u1ec7u v\u00e0 h\u1ed7 tr\u1ee3 giao d\u1ecbch ph\u1ee9c t\u1ea1p nh\u01b0 c\u00e1c h\u1ec7 th\u1ed1ng t\u00e0i ch\u00ednh ho\u1eb7c qu\u1ea3n l\u00fd kh\u00e1ch h\u00e0ng. Tr\u00e1i l\u1ea1i, NoSQL \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng trong c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u t\u00ednh linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng l\u1edbn nh\u01b0 c\u00e1c h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef d\u1eef li\u1ec7u web ho\u1eb7c ph\u00e2n t\u00edch d\u1eef li\u1ec7u l\u1edbn.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Quan tr\u1ecdng nh\u1ea5t, vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa RDBMS v\u00e0 NoSQL ph\u1ee5 thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a d\u1ef1 \u00e1n v\u00e0 nhu c\u1ea7u kinh doanh v\u00e0 c\u00f3 th\u1ec3 c\u1ea7n s\u1ef1 ph\u1ed1i h\u1ee3p gi\u1eefa c\u1ea3 hai trong m\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p.<\/span><\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" class=\"sp-no-webp wp-image-5668 aligncenter sp-no-webp entered lazyloaded\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2.png\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2-200x200.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2-60x60.png 60w\" alt=\"robby-2\" width=\"300\" height=\"300\" data-lazy-src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2.png\" data-lazy-sizes=\"(max-width: 300px) 100vw, 300px\" data-lazy-srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2-200x200.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2-60x60.png 60w\" data-ll-status=\"loaded\" \/><\/figure>\n<\/div>\n<p id=\"block-bdf220a1-3635-4794-9101-81d879939b92\" class=\"has-text-align-center\" style=\"text-align: center;\"><strong>B\u1ea1n th\u1ea5y b\u00e0i vi\u1ebft hay v\u00e0 h\u1eefu \u00edch? \u0110\u1eebng ng\u1ea1i Share v\u1edbi b\u1ea1n b\u00e8 v\u00e0 \u0111\u1ed3ng nghi\u1ec7p nh\u00e9.<\/strong><\/p>\n<p id=\"block-a1315aab-406f-48df-97fc-6b9584e6e134\" class=\"has-text-align-center\" style=\"text-align: center;\"><strong>V\u00e0 nhanh tay tham kh\u1ea3o\u00a0<a href=\"http:\/\/itviec.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">vi\u1ec7c l\u00e0m IT<\/a>\u00a0\u201cch\u1ea5t\u201d tr\u00ean ITviec<\/strong>!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong th\u1ebf gi\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u hi\u1ec7n nay, hai h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd ph\u1ed5 bi\u1ebfn l\u00e0 RDBMS v\u00e0 NoSQL. RDBMS \u0111\u00e3 t\u1eeb l\u00e2u tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n cho vi\u1ec7c qu\u1ea3n l\u00fd d\u1eef li\u1ec7u v\u1edbi m\u00f4 h\u00ecnh quan h\u1ec7 v\u00e0 c\u00e1c chu\u1ea9n m\u1ef1c v\u1eefng ch\u1eafc. Tr\u00e1i ng\u01b0\u1ee3c v\u1edbi \u0111\u00f3, NoSQL, d\u00f9 m\u1edbi m\u1ebb nh\u01b0ng nhanh [&hellip;]<\/p>\n","protected":false},"author":209,"featured_media":66545,"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-66544","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>RDBMS vs NoSQL: \u0110\u1ecbnh ngh\u0129a, So s\u00e1nh v\u00e0 Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng - ITviec Blog<\/title>\n<meta name=\"description\" content=\"Kh\u00e1m ph\u00e1 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa RDBMS vs NoSQL v\u00e0 t\u00ecm hi\u1ec3u t\u00ednh linh ho\u1ea1t c\u1ee7a NoSQL v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a RDBMS trong qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/itviec.com\/blog\/rdbms-vs-nosql\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"RDBMS vs NoSQL: \u0110\u1ecbnh ngh\u0129a, So s\u00e1nh v\u00e0 Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng\" \/>\n<meta property=\"og:description\" content=\"Trong th\u1ebf gi\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u hi\u1ec7n nay, hai h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd ph\u1ed5 bi\u1ebfn l\u00e0 RDBMS v\u00e0 NoSQL. RDBMS \u0111\u00e3 t\u1eeb l\u00e2u tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n cho vi\u1ec7c qu\u1ea3n l\u00fd d\u1eef li\u1ec7u v\u1edbi\" \/>\n<meta property=\"og:url\" content=\"https:\/\/itviec.com\/blog\/rdbms-vs-nosql\/\" \/>\n<meta property=\"og:site_name\" content=\"ITviec Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ITviec\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-20T14:12:05+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/04\/Thumbnail-RDBMS-vs-NoSQL-vippro.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"790\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"M\u1ef9 Duy\u00ean\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@ITviec\" \/>\n<meta name=\"twitter:site\" content=\"@ITviec\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"M\u1ef9 Duy\u00ean\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"20 ph\u00fat\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"RDBMS vs NoSQL: \u0110\u1ecbnh ngh\u0129a, So s\u00e1nh v\u00e0 Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng - ITviec Blog","description":"Kh\u00e1m ph\u00e1 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa RDBMS vs NoSQL v\u00e0 t\u00ecm hi\u1ec3u t\u00ednh linh ho\u1ea1t c\u1ee7a NoSQL v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a RDBMS trong qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u.","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:\/\/itviec.com\/blog\/rdbms-vs-nosql\/","og_locale":"vi_VN","og_type":"article","og_title":"RDBMS vs NoSQL: \u0110\u1ecbnh ngh\u0129a, So s\u00e1nh v\u00e0 Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng","og_description":"Trong th\u1ebf gi\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u hi\u1ec7n nay, hai h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd ph\u1ed5 bi\u1ebfn l\u00e0 RDBMS v\u00e0 NoSQL. 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