{"id":1711,"date":"2022-03-17T06:35:04","date_gmt":"2022-03-17T06:35:04","guid":{"rendered":"https:\/\/topviecit.vn\/blog\/?p=1711"},"modified":"2022-03-17T06:35:05","modified_gmt":"2022-03-17T06:35:05","slug":"chuc-nang-cua-he-quan-tri-co-so-du-lieu","status":"publish","type":"post","link":"https:\/\/topviecit.vn\/blog\/chuc-nang-cua-he-quan-tri-co-so-du-lieu\/","title":{"rendered":"Kh\u00e1m ph\u00e1 nh\u1eefng ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u"},"content":{"rendered":"\n<p>H\u1ec7 qu\u1ea3n tr\u1ecb d\u1eef li\u1ec7u l\u00e0 m\u1ed9t g\u00f3i ph\u1ea7n m\u1ec1m v\u00e0 c\u00f3 c\u00e1c ch\u1ee9c n\u0103ng x\u00e1c \u0111\u1ecbnh, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 qu\u1ea3n l\u00fd c\u00e1c d\u1eef li\u1ec7u \u1edf trong c\u01a1 s\u1edf d\u1eef li\u1ec7u. V\u1eady, nh\u1eefng <strong>ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/strong> l\u00e0 g\u00ec? N\u1ebfu b\u1ea1n c\u0169ng \u0111ang t\u00ecm hi\u1ec3u v\u1ec1 v\u1ea5n \u0111\u1ec1 n\u00e0y, h\u00e3y c\u00f9ng <strong><a href=\"https:\/\/topviecit.vn\/\">topviecit.vn<\/a><\/strong> theo d\u00f5i ngay b\u00e0i vi\u1ebft v\u1ec1 c\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u sau \u0111\u00e2y.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_63 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 \" >Table of Contents<\/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:\/\/topviecit.vn\/blog\/chuc-nang-cua-he-quan-tri-co-so-du-lieu\/#Tim_hieu_ve_he_quan_tri_co_so_du_lieu\" title=\"T\u00ecm hi\u1ec3u v\u1ec1 h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u\">T\u00ecm hi\u1ec3u v\u1ec1 h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/topviecit.vn\/blog\/chuc-nang-cua-he-quan-tri-co-so-du-lieu\/#He_quan_tri_co_so_du_lieu_la_gi\" title=\"H\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 g\u00ec?\">H\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/topviecit.vn\/blog\/chuc-nang-cua-he-quan-tri-co-so-du-lieu\/#Cac_buoc_de_xay_dung_he_co_so_du_lieu\" title=\"C\u00e1c b\u01b0\u1edbc \u0111\u1ec3 x\u00e2y d\u1ef1ng h\u1ec7 c\u01a1 s\u1edf d\u1eef li\u1ec7u\">C\u00e1c b\u01b0\u1edbc \u0111\u1ec3 x\u00e2y d\u1ef1ng h\u1ec7 c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/topviecit.vn\/blog\/chuc-nang-cua-he-quan-tri-co-so-du-lieu\/#Cac_chuc_nang_cua_he_quan_tri_co_so_du_lieu\" title=\"C\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u\">C\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/topviecit.vn\/blog\/chuc-nang-cua-he-quan-tri-co-so-du-lieu\/#Chuc_nang_quan_ly_Data_Storage\" title=\"Ch\u1ee9c n\u0103ng qu\u1ea3n l\u00fd Data Storage\">Ch\u1ee9c n\u0103ng qu\u1ea3n l\u00fd Data Storage<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/topviecit.vn\/blog\/chuc-nang-cua-he-quan-tri-co-so-du-lieu\/#Chuc_nang_quan_ly_Data_Dictionary\" title=\"Ch\u1ee9c n\u0103ng qu\u1ea3n l\u00fd Data Dictionary\">Ch\u1ee9c n\u0103ng qu\u1ea3n l\u00fd Data Dictionary<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/topviecit.vn\/blog\/chuc-nang-cua-he-quan-tri-co-so-du-lieu\/#Mot_so_chuc_nang_khac_can_biet\" title=\"M\u1ed9t s\u1ed1 ch\u1ee9c n\u0103ng kh\u00e1c c\u1ea7n bi\u1ebft\">M\u1ed9t s\u1ed1 ch\u1ee9c n\u0103ng kh\u00e1c c\u1ea7n bi\u1ebft<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tim_hieu_ve_he_quan_tri_co_so_du_lieu\"><\/span><strong>T\u00ecm hi\u1ec3u v\u1ec1 h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Tr\u01b0\u1edbc khi t\u00ecm hi\u1ec3u v\u1ec1 c\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u, b\u1ea1n c\u1ea7n hi\u1ec3u v\u1ec1 kh\u00e1i ni\u1ec7m c\u1ee7a h\u1ec7 c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 g\u00ec. C\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"He_quan_tri_co_so_du_lieu_la_gi\"><\/span><strong>H\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>H\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u \u2013 Database Management System (DBMS) \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 m\u1ed9t g\u00f3i ph\u1ea7n m\u1ec1m, trong \u0111\u00f3 c\u00f3 ch\u1ee9c n\u0103ng x\u00e1c \u0111\u1ecbnh, truy xu\u1ea5t, thao t\u00e1c, qu\u1ea3n tr\u1ecb c\u00e1c d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u. Nguy\u00ean t\u1eafc \u0111\u1ec3 DBMS ho\u1ea1t \u0111\u1ed9ng l\u00e0 qu\u00e1 tr\u00ecnh l\u00e0m vi\u1ec7c v\u1edbi d\u1eef li\u1ec7u (\u0111\u00ednh d\u1ea1ng, c\u1ea5u tr\u00fac record, c\u1ea5u tr\u00fac file, t\u00ean file,\u2026). DBMS s\u1ebd x\u00e1c \u0111\u1ecbnh th\u00eam c\u00e1c quy t\u1eafc \u0111\u1ec3 ph\u1ee5c v\u1ee5 cho s\u1ef1 x\u00e1c th\u1ef1c ho\u1eb7c c\u00e1c thao t\u00e1c kh\u00e1c v\u1edbi d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p>Nh\u1eefng c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ec9 c\u00f3 th\u1ec3 x\u1eed l\u00fd \u0111\u01b0\u1ee3c nh\u1eefng ph\u1ea7n d\u1eef li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh d\u1ea1ng \u0111\u1eb7c bi\u1ec7t. Tuy v\u1eady, \u1edf th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i, c\u00e1c h\u1ec7 th\u1ed1ng ph\u00e1t tri\u1ec3n \u0111\u00e3 c\u00f3 th\u1ec3 x\u1eed l\u00fd \u0111\u01b0\u1ee3c c\u00e1c d\u1eef li\u1ec7u m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u1ecbnh d\u1ea1ng qu\u00e1 \u0111\u1eb7c bi\u1ec7t. Nh\u1eefng d\u1eef li\u1ec7u n\u00e0y s\u1ebd li\u00ean k\u1ebft v\u1edbi nhau b\u1eb1ng c\u00e1c c\u00e1ch ph\u1ee9c t\u1ea1p h\u01a1n.<\/p>\n\n\n\n<p>>>>Xem th\u00eam: <a href=\"https:\/\/topviecit.vn\/blog\/microservices-la-gi\/\">Microservices l\u00e0 g\u00ec? \u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a microservices<\/a><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/03\/image-3.jpeg\" alt=\"H\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 m\u1ed9t g\u00f3i ph\u1ea7n m\u1ec1m \u0111\u1ec3 qu\u1ea3n l\u00fd d\u1eef li\u1ec7u\" class=\"wp-image-1712\" srcset=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/03\/image-3.jpeg 800w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/03\/image-3-640x400.jpeg 640w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/03\/image-3-768x480.jpeg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption><em>H\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 m\u1ed9t g\u00f3i ph\u1ea7n m\u1ec1m \u0111\u1ec3 qu\u1ea3n l\u00fd d\u1eef li\u1ec7u<\/em><\/figcaption><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cac_buoc_de_xay_dung_he_co_so_du_lieu\"><\/span><strong>C\u00e1c b\u01b0\u1edbc \u0111\u1ec3 x\u00e2y d\u1ef1ng h\u1ec7 c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u0110\u1ec3 x\u00e2y d\u1ef1ng h\u1ec7 c\u01a1 s\u1edf d\u1eef li\u1ec7u, b\u1ea1n s\u1ebd c\u1ea7n th\u1ef1c hi\u1ec7n 3 b\u01b0\u1edbc c\u01a1 b\u1ea3n sau:<\/p>\n\n\n\n<p><strong>B\u01b0\u1edbc 1 \u2013 kh\u1ea3o s\u00e1t:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Th\u1ef1c hi\u1ec7n t\u00ecm hi\u1ec3u c\u00e1c y\u00eau c\u1ea7u c\u1ee7a DBMS.<\/li><li>X\u00e1c \u0111\u1ecbnh, ph\u00e2n t\u00edch nh\u1eefng d\u1eef li\u1ec7u c\u1ea7n l\u01b0u tr\u1eef.<\/li><li>Ph\u00e2n t\u00edch ch\u1ee9c n\u0103ng c\u1ea7n c\u00f3.<\/li><li>X\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u1ee7a ph\u1ea7n c\u1ee9ng, ph\u1ea7n m\u1ec1m.<\/li><\/ul>\n\n\n\n<p><strong>B\u01b0\u1edbc 2 \u2013 thi\u1ebft k\u1ebf:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Th\u1ef1c hi\u1ec7n thi\u1ebft k\u1ebf DBMS.<\/li><li>L\u1ef1a ch\u1ecdn h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u ph\u00f9 h\u1ee3p \u0111\u1ec3 tri\u1ec3n khai.<\/li><li>X\u00e2y d\u1ef1ng c\u00e1c h\u1ec7 th\u1ed1ng ch\u01b0\u01a1ng tr\u00ecnh trong DBMS \u0111\u1ec3 \u1ee9ng d\u1ee5ng ph\u00f9 h\u1ee3p.<\/li><\/ul>\n\n\n\n<p><strong>B\u01b0\u1edbc 3 \u2013 ki\u1ec3m tra, th\u1eed nghi\u1ec7m: <\/strong>Sau khi \u0111\u00e3 thi\u1ebft k\u1ebf DBMS ho\u00e0n thi\u1ec7n, b\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n ki\u1ec3m th\u1eed ch\u01b0\u01a1ng tr\u00ecnh v\u00e0 ho\u00e0n t\u1ea5t h\u1ec7 th\u1ed1ng qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cac_chuc_nang_cua_he_quan_tri_co_so_du_lieu\"><\/span><strong>C\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Nh\u1eefng ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u00f3 th\u1ec3 k\u1ec3 \u0111\u1ebfn nh\u01b0:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Chuc_nang_quan_ly_Data_Storage\"><\/span><strong>Ch\u1ee9c n\u0103ng qu\u1ea3n l\u00fd Data Storage<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 l\u01b0u tr\u0129 c\u00e1c bi\u1ec3u m\u1eabu d\u1eef li\u1ec7u, d\u1eef li\u1ec7u kh\u00e1c c\u00f3 li\u00ean quan. V\u00ed d\u1ee5 nh\u01b0 c\u00e1c \u0111\u1ecbnh d\u1ea1ng b\u00e1o c\u00e1o, procedural code, c\u00e1c quy t\u1eafc v\u1ec1 data validation, c\u1ea5u tr\u00fac x\u1eed l\u00fd \u0111\u1ecbnh d\u1ea1ng video, h\u00ecnh \u1ea3nh,\u2026<\/p>\n\n\n\n<p>V\u1edbi ch\u1ee9c n\u0103ng n\u00e0y, ng\u01b0\u1eddi d\u00f9ng s\u1ebd kh\u00f4ng c\u1ea7n bi\u1ebft c\u00e1c d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c thao t\u00e1c, l\u01b0u tr\u1eef nh\u01b0 th\u1ebf n\u00e0o. C\u00f9ng v\u1edbi ch\u1ee9c n\u0103ng n\u00e0y s\u1ebd c\u00f3 th\u1ec3 Performance Tuning, n\u00f3 s\u1ebd c\u00f3 s\u1ef1 li\u00ean quan \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u01a1 s\u1edf d\u1eef li\u1ec7u, t\u1ed1c \u0111\u1ed9 truy c\u1eadp c\u0169ng nh\u01b0 l\u01b0u tr\u1eef.<\/p>\n\n\n\n<p>>>>Xem th\u00eam: <a href=\"https:\/\/topviecit.vn\/blog\/webpack-la-gi\/\">Webpack L\u00e0 G\u00ec? Nh\u1eefng Ki\u1ebfn Th\u1ee9c T\u1ed5ng Quan V\u1ec1 Webpack<\/a><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/03\/image-4.jpeg\" alt=\"Data Storage l\u00e0 m\u1ed9t trong nh\u1eefng ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u\" class=\"wp-image-1713\" srcset=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/03\/image-4.jpeg 800w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/03\/image-4-640x400.jpeg 640w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/03\/image-4-768x480.jpeg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption><em>Data Storage l\u00e0 m\u1ed9t trong nh\u1eefng ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/em><\/figcaption><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Chuc_nang_quan_ly_Data_Dictionary\"><\/span><strong>Ch\u1ee9c n\u0103ng qu\u1ea3n l\u00fd Data Dictionary<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u0110\u00e2y l\u00e0 n\u01a1i m\u00e0 DBMS l\u01b0u tr\u1eef \u0111\u1ecbnh ngh\u0129a c\u00e1c ph\u1ea7n t\u1eed d\u1eef li\u1ec7u, c\u00e1c m\u1ed1i quan h\u1ec7 c\u1ee7a nh\u1eefng d\u1eef li\u1ec7u n\u00e0y (metadata). Do \u0111\u00f3, qu\u1ea3n l\u00fd Data Dictionary c\u0169ng l\u00e0 m\u1ed9t ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00e1 quan tr\u1ecdng. V\u1edbi ch\u1ee9c n\u0103ng n\u00e0y, DBMS s\u1ebd s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 tra c\u1ee9u v\u1ec1 c\u1ea5u tr\u00fac, m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c ph\u1ea7n t\u1eed d\u1eef li\u1ec7u n\u1ebfu \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u t\u1eeb c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh truy c\u1eadp d\u1eef li\u1ec7u trong DBMS.<\/p>\n\n\n\n<p>Nh\u00ecn chung, c\u00e1c d\u1eef li\u1ec7u n\u00e0y s\u1ebd \u0111i qua h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u, lo\u1ea1i b\u1ecf s\u1ef1 ph\u1ee5 thu\u1ed9c c\u1ee7a c\u1ea5u tr\u00fac \u2013 d\u1eef li\u1ec7u v\u1edbi nhau. Sau \u0111\u00f3 s\u1ebd cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng d\u1eef li\u1ec7u tr\u1eebu t\u01b0\u1ee3ng h\u00f3a hoan. Ngo\u00e0i ra, Data Dictionary th\u01b0\u1eddng s\u1ebd b\u1ecb \u1ea9n kh\u1ecfi c\u00e1c user, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi c\u00e1c admin nhi\u1ec1u h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mot_so_chuc_nang_khac_can_biet\"><\/span><strong>M\u1ed9t s\u1ed1 ch\u1ee9c n\u0103ng kh\u00e1c c\u1ea7n bi\u1ebft<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>B\u00ean c\u1ea1nh 2 Data Storage, Data Dictionary, c\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00e1c c\u0169ng s\u1ebd gi\u00fap \u00edch kh\u00e1 nhi\u1ec1u cho ng\u01b0\u1eddi d\u00f9ng. V\u00ed d\u1ee5 nh\u01b0:<\/p>\n\n\n\n<p><strong>Chuy\u1ec3n \u0111\u1ed5i, tr\u00ecnh b\u00e0y d\u1eef li\u1ec7u: <\/strong>Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i c\u00e1c d\u1eef li\u1ec7u b\u1ea5t k\u1ef3 trong DBMS. Tuy nhi\u00ean, nh\u1eefng d\u1eef li\u1ec7u n\u00e0y c\u1ea7n tu\u00e2n theo c\u1ea5u tr\u00fac b\u1eaft bu\u1ed9c.<\/p>\n\n\n\n<p><strong>Qu\u1ea3n l\u00fd b\u00e1o m\u1eadt:<\/strong> \u0110\u00e2y c\u0169ng l\u00e0 m\u1ed9t trong nh\u1eefng ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 quan tr\u1ecdng v\u1edbi ng\u01b0\u1eddi d\u00f9ng. Ch\u1ee9c n\u0103ng n\u00e0y gi\u00fap l\u1eadp tr\u00ecnh vi\u00ean c\u00f3 th\u1ec3 \u0111\u1eb7t ra nh\u1eefng quy t\u1eafc nh\u1ea5t \u0111\u1ecbnh v\u1edbi user truy c\u1eadp v\u00e0o DBMS. Th\u00f4ng th\u01b0\u1eddng s\u1ebd \u0111\u01b0\u1ee3c bi\u1ec3u hi\u1ec7n qu\u1ea3 username v\u00e0 password.<\/p>\n\n\n\n<p><strong>Ki\u1ec3m so\u00e1t truy c\u1eadp: <\/strong>V\u1edbi DBMS, b\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c truy c\u1eadp c\u1ee7a nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng. \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng ch\u1ee9c n\u0103ng th\u1ec3 hi\u1ec7n \u0111\u01b0\u1ee3c t\u00ednh to\u00e0n v\u1eb9n, nh\u1ea5t qu\u00e1n c\u1ee7a d\u1eef li\u1ec7u. V\u00e0 n\u00f3 c\u0169ng \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 h\u1eefu \u00edch trong h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p><strong>Database Access Languages, giao di\u1ec7n l\u1eadp tr\u00ecnh: <\/strong>DBMS s\u1ebd ch\u1ea5p nh\u1eadn nh\u1eefng y\u00eau c\u1ea7u kh\u00e1c nhau c\u1ee7a ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i qua nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng m\u1ea1ng kh\u00e1c nhau. V\u00ed d\u1ee5 nh\u01b0 Internet Explorer, Chrome, Mozilla Firefox,\u2026<\/p>\n\n\n\n<p><strong>Qu\u1ea3n l\u00fd s\u1ef1 to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u:<\/strong> Trong DBMS, ng\u00f4n ng\u1eef truy v\u1ea5n l\u00e0 nonprocedural language. V\u00ed d\u1ee5 d\u1ec5 hi\u1ec3u h\u01a1n cho ch\u1ee9c n\u0103ng n\u00e0y ch\u00ednh l\u00e0 ng\u00f4n ng\u1eef SQL. V\u1edbi ng\u00f4n ng\u1eef n\u00e0y, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c nh\u1eefng vi\u1ec7c h\u1ecd c\u1ea7n l\u00e0m l\u00e0 g\u00ec, kh\u00f4ng c\u1ea7n ph\u1ea3i gi\u1ea3i th\u00edch c\u00e1ch th\u1ef1c hi\u1ec7n nh\u01b0 th\u1ebf n\u00e0o.<\/p>\n\n\n\n<p><strong>Transaction Management: <\/strong>DBMS cung c\u1ea5p ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ea3m b\u1ea3o c\u00e1c c\u1ea5p nh\u1eadt trong transaction c\u00f3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n hay l\u00e0 kh\u00f4ng. \u0110\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c ch\u1ee9c n\u0103ng n\u00e0y, DBMS s\u1ebd tu\u00e2n th\u1ee7 theo thu\u1ed9c t\u00ednh ACID.<\/p>\n\n\n\n<p>>>>Xem th\u00eam: <a href=\"https:\/\/topviecit.vn\/blog\/magento-la-gi\/\">Magento L\u00e0 G\u00ec? C\u00f3 N\u00ean L\u00e0m Magento Developer Hay Kh\u00f4ng?<\/a><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/03\/image-5.jpeg\" alt=\"DBMS c\u00f3 kh\u00e1 nhi\u1ec1u ch\u1ee9c n\u0103ng h\u1eefu \u00edch d\u00e0nh cho l\u1eadp tr\u00ecnh vi\u00ean\" class=\"wp-image-1714\" srcset=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/03\/image-5.jpeg 800w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/03\/image-5-640x400.jpeg 640w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/03\/image-5-768x480.jpeg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption><em>DBMS c\u00f3 kh\u00e1 nhi\u1ec1u ch\u1ee9c n\u0103ng h\u1eefu \u00edch d\u00e0nh cho l\u1eadp tr\u00ecnh vi\u00ean<\/em><\/figcaption><\/figure><\/div>\n\n\n\n<p>Hy v\u1ecdng nh\u1eefng th\u00f4ng tin \u1edf tr\u00ean s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u h\u01a1n v\u1ec1 c\u00e1c <strong>ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/strong> l\u00e0 g\u00ec. \u0110\u1eebng qu\u00ean theo d\u00f5i c\u00e1c b\u00e0i vi\u1ebft c\u00f9ng chuy\u00ean m\u1ee5c t\u1ea1i website n\u00e0y \u0111\u1ec3 c\u1eadp nh\u1eadt th\u00eam nhi\u1ec1u ki\u1ebfn th\u1ee9c h\u01a1n v\u1ec1 c\u00f4ng ngh\u1ec7 th\u00f4ng tin.<\/p>\n\n\n\n<p>>>>Xem th\u00eam: <a href=\"https:\/\/topviecit.vn\/blog\/back-end-developer-la-gi\/\">Back-End Developer L\u00e0 G\u00ec? L\u00e0m Back-End C\u1ea7n H\u1ecdc Nh\u1eefng G\u00ec?<\/a><\/p>\n\n\n\n<p class=\"has-text-align-right\"><em>H\u00ecnh \u1ea3nh: S\u01b0u t\u1ea7m<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u1ec7 qu\u1ea3n tr\u1ecb d\u1eef li\u1ec7u l\u00e0 m\u1ed9t g\u00f3i ph\u1ea7n m\u1ec1m v\u00e0 c\u00f3 c\u00e1c ch\u1ee9c n\u0103ng x\u00e1c \u0111\u1ecbnh, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 qu\u1ea3n l\u00fd c\u00e1c d\u1eef li\u1ec7u \u1edf trong c\u01a1 s\u1edf d\u1eef li\u1ec7u. V\u1eady, nh\u1eefng ch\u1ee9c n\u0103ng c\u1ee7a h\u1ec7 qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u00e0 g\u00ec? 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