{"id":28594,"date":"2024-02-29T15:28:28","date_gmt":"2024-02-29T13:28:28","guid":{"rendered":"https:\/\/hostkoss.com\/b\/?p=28594"},"modified":"2024-07-13T12:47:20","modified_gmt":"2024-07-13T09:47:20","slug":"database","status":"publish","type":"post","link":"https:\/\/hostkoss.com\/b\/sk\/database\/","title":{"rendered":"\u010co je to datab\u00e1za a pre\u010do je d\u00f4le\u017eit\u00e1 pre podnikanie"},"content":{"rendered":"\n<p><strong>Datab\u00e1zy s\u00fa zbierkou inform\u00e1ci\u00ed, ktor\u00e9 s\u00fa zvy\u010dajne usporiadan\u00e9 do tabuliek.<\/strong> \u00dadaje v datab\u00e1zach s\u00fa ulo\u017een\u00e9 tak, aby ich bolo mo\u017en\u00e9 \u013eahko vyh\u013eada\u0165 a pou\u017ei\u0165 pomocou po\u010d\u00edta\u010dov\u00e9ho programu.<\/p>\n\n\n\n<p><strong>Datab\u00e1zy s\u00fa pre podniky d\u00f4le\u017eit\u00e9, preto\u017ee sa v nich uchov\u00e1vaj\u00fa inform\u00e1cie, ktor\u00e9<\/strong> s\u00fa nevyhnutn\u00e9 pre fungovanie spolo\u010dnosti, napr\u00edklad inform\u00e1cie o z\u00e1kazn\u00edkoch, skladov\u00e9 z\u00e1znamy a objedn\u00e1vky. K tomuto typu inform\u00e1ci\u00ed mo\u017eno pristupova\u0165 r\u00fdchlo a presne bez toho, aby ste museli triedi\u0165 hromadu papierov\u00fdch z\u00e1znamov alebo sa sna\u017ei\u0165 zapam\u00e4ta\u0165 si, kde s\u00fa jednotliv\u00e9 \u00fadaje ulo\u017een\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-\u0449\u043e-\u0442\u0430\u043a\u0435-\u0431\u0430\u0437\u0438-\u0434\u0430\u043d\u0438\u0445-rdbms-nosql-\u0442\u0430-sql\">\u010co s\u00fa to datab\u00e1zy RDBMS, NoSQL a SQL?<\/h2>\n\n\n\n<p><strong>Syst\u00e9m riadenia rela\u010dn\u00fdch datab\u00e1z (RDBMS<\/strong> ) je typ datab\u00e1zy pou\u017e\u00edvan\u00fd na ukladanie, vyh\u013ead\u00e1vanie a spr\u00e1vu \u00fadajov v tabu\u013ek\u00e1ch. Uklad\u00e1 \u00fadaje v riadkoch a st\u013apcoch.<\/p>\n\n\n\n<p><strong>Datab\u00e1zy NoSQL s\u00fa navrhnut\u00e9 tak, aby rie\u0161ili probl\u00e9my, ktor\u00e9<\/strong> DBMS nedok\u00e1\u017eu vyrie\u0161i\u0165, ako napr\u00edklad ukladanie ne\u0161trukt\u00farovan\u00fdch \u00fadajov, distribuovan\u00e9 ukladanie, \u0161k\u00e1lovate\u013enos\u0165 a v\u00fdkon.<\/p>\n\n\n\n<p><strong>Datab\u00e1zy SQL s\u00fa r\u00fdchlej\u0161ie ako datab\u00e1zy NoSQL<\/strong>, ale zo svojej podstaty nie s\u00fa \u0161k\u00e1lovate\u013en\u00e9. Nepodporuj\u00fa dobre ne\u0161trukt\u00farovan\u00e9 \u00fadaje, preto sa nedaj\u00fa pou\u017ei\u0165 na anal\u00fdzu ve\u013ek\u00fdch objemov \u00fadajov.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-\u044f\u043a-\u043f\u0440\u0430\u0446\u044e\u0454-\u0431\u0430\u0437\u0430-\u0434\u0430\u043d\u0438\u0445\">Ako funguje datab\u00e1za<\/h2>\n\n\n\n<p><strong>Rela\u010dn\u00e1 datab\u00e1za uklad\u00e1 \u00fadaje do tabuliek.<\/strong> Tabu\u013eky sa skladaj\u00fa z riadkov a st\u013apcov. Riadok je jeden z\u00e1znam v tabu\u013eke a st\u013apec je konkr\u00e9tne pole v ka\u017edom riadku.<\/p>\n\n\n\n<p>St\u013apcov\u00e1 <strong>datab\u00e1za uklad\u00e1 \u00fadaje v st\u013apcoch,<\/strong> \u010do s\u00fa \u0161pecifick\u00e9 polia v ka\u017edom riadku. St\u013apce sa ukladaj\u00fa v zoradenom porad\u00ed, aby sa na ne dali \u013eah\u0161ie vykon\u00e1va\u0165 dotazy.<\/p>\n\n\n\n<p><strong>\u00dalo\u017eisk\u00e1 k\u013e\u00fa\u010dov a hodn\u00f4t ukladaj\u00fa \u00fadaje bu\u010f<\/strong> ako p\u00e1ry k\u013e\u00fa\u010d-hodnota, alebo ako zoznamy k\u013e\u00fa\u010dov a hodn\u00f4t. To znamen\u00e1, \u017ee v\u0161etky \u00fadaje s\u00fa ulo\u017een\u00e9 ako objekty a na ich usporiadanie nie s\u00fa potrebn\u00e9 \u017eiadne tabu\u013eky alebo riadky.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-\u0442\u0438\u043f\u0438-\u0431\u0430\u0437-\u0434\u0430\u043d\u0438\u0445-\u0442\u0430-\u043f\u0435\u0440\u0435\u0432\u0430\u0433\u0438-\u043d\u0435\u0434\u043e\u043b\u0456\u043a\u0438-\u043a\u043e\u0436\u043d\u043e\u0433\u043e-\u0442\u0438\u043f\u0443\">Typy datab\u00e1z a v\u00fdhody\/nev\u00fdhody jednotliv\u00fdch typov<\/h2>\n\n\n\n<p><strong>Rela\u010dn\u00e9 datab\u00e1zy s\u00fa najbe\u017enej\u0161\u00edm typom datab\u00e1z<\/strong>, ktor\u00e9 sa dnes pou\u017e\u00edvaj\u00fa. \u00dadaje sa v nich ukladaj\u00fa do tabuliek s riadkami a st\u013apcami. K t\u00fdmto datab\u00e1zam mo\u017eno pristupova\u0165 pomocou jazyka SQL, ktor\u00fd je na to ur\u010den\u00fd.<\/p>\n\n\n\n<p><strong>St\u013apcov\u00e9 datab\u00e1zy ukladaj\u00fa \u00fadaje vo forme st\u013apcov, \u010do<\/strong> je efekt\u00edvnej\u0161ie ako ukladanie na z\u00e1klade riadkov. To umo\u017e\u0148uje r\u00fdchlej\u0161ie vyh\u013ead\u00e1vanie a aktualiz\u00e1ciu datab\u00e1zy. St\u013apcov\u00e9 datab\u00e1zy tie\u017e zaberaj\u00fa menej pam\u00e4te ako datab\u00e1zy zalo\u017een\u00e9 na riadkoch, \u010do znamen\u00e1, \u017ee na svoj chod potrebuj\u00fa menej pam\u00e4te RAM.<\/p>\n\n\n\n<p><strong>K\u013e\u00fa\u010dov\u00e9 a hodnotov\u00e9 \u00falo\u017eisk\u00e1 sa od rela\u010dn\u00fdch a<\/strong> st\u013apcov\u00fdch datab\u00e1z <strong>l\u00ed\u0161ia<\/strong> t\u00fdm, \u017ee nevy\u017eaduj\u00fa predbe\u017en\u00fd n\u00e1vrh sch\u00e9my a umo\u017e\u0148uj\u00fa uklada\u0165 \u00fadaje v \u013eubovo\u013enom porad\u00ed bez potreby vopred definova\u0165 ich \u0161trukt\u00faru.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\" style=\"font-size:19px\">\n<p><strong>Z\u00e1ver:<\/strong><br>Datab\u00e1za je s\u00fabor \u00fadajov usporiadan\u00fd tak, aby ich \u013eudia mohli \u013eah\u0161ie n\u00e1js\u0165 a pou\u017e\u00edva\u0165. Datab\u00e1zy s\u00fa neoddelite\u013enou s\u00fa\u010das\u0165ou ka\u017edej organiz\u00e1cie. Pom\u00e1haj\u00fa organizova\u0165 v\u0161etky \u00fadaje zhroma\u017eden\u00e9 spolo\u010dnos\u0165ou a spr\u00edstupni\u0165 ich. M\u00f4\u017eu sa pou\u017e\u00edva\u0165 na r\u00f4zne \u00fa\u010dely, napr\u00edklad na uchov\u00e1vanie inform\u00e1ci\u00ed o z\u00e1kazn\u00edkoch, spracovanie transakci\u00ed alebo sledovanie z\u00e1sob.<\/p>\n<\/blockquote>\n\n\n\n<p><strong>Pre\u010d\u00edtajte si tie\u017e:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/hostkoss.com\/b\/sk\/dump-mysql-database\/\" target=\"_blank\" rel=\"noreferrer noopener\">Ako vytvori\u0165 v\u00fdpis datab\u00e1zy MySQL a pre\u010do je to potrebn\u00e9<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/hostkoss.com\/b\/sk\/centos-vs-ubuntu\/\" target=\"_blank\" rel=\"noreferrer noopener\">V\u00fdber najlep\u0161ieho opera\u010dn\u00e9ho syst\u00e9mu pre v\u00e1\u0161 server: CentOS vs Ubuntu<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/hostkoss.com\/b\/sk\/http-2-nginx-ubuntu\/\" target=\"_blank\" rel=\"noreferrer noopener\">Konfigur\u00e1cia podpory HTTP\/2 v Nginxe v Ubuntu 18.04<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/hostkoss.com\/b\/sk\/vds-vps\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u010co je server VDS\/VPS a ako si vybra\u0165 ten najlep\u0161\u00ed<\/a><\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-\u0437\u0430\u043f\u0438\u0442\u0430\u043d\u043d\u044f-\u0442\u0430-\u0432\u0456\u0434\u043f\u043e\u0432\u0456\u0434\u0456-\u043f\u0440\u043e-\u0431\u0430\u0437\u0443-\u0434\u0430\u043d\u0438\u0445\">Ot\u00e1zky a odpovede o datab\u00e1ze<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1720799432070\"><strong class=\"schema-faq-question\"><strong>Pre\u010do s\u00fa datab\u00e1zy d\u00f4le\u017eit\u00e9 pre podnikanie<\/strong>?<\/strong> <p class=\"schema-faq-answer\"><em>Datab\u00e1zy pom\u00e1haj\u00fa spolo\u010dnostiam efekt\u00edvne organizova\u0165, uklada\u0165 a vyh\u013ead\u00e1va\u0165 \u00fadaje, \u010do umo\u017e\u0148uje efekt\u00edvnej\u0161ie rozhodovanie a optimaliz\u00e1ciu \u010dinnost\u00ed.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1720799439759\"><strong class=\"schema-faq-question\"><strong>Ak\u00e9 typy datab\u00e1z maj\u00fa podniky k dispoz\u00edcii<\/strong>?<\/strong> <p class=\"schema-faq-answer\"><em>V z\u00e1vislosti od svojich potrieb v oblasti ukladania a spracovania \u00fadajov si podniky m\u00f4\u017eu vybra\u0165 medzi rela\u010dn\u00fdmi (SQL) a nerela\u010dn\u00fdmi (NoSQL) datab\u00e1zami.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1720799450685\"><strong class=\"schema-faq-question\"><strong>Ako datab\u00e1zy zlep\u0161uj\u00fa bezpe\u010dnos\u0165 \u00fadajov<\/strong>?<\/strong> <p class=\"schema-faq-answer\"><em>Datab\u00e1zy pon\u00fakaj\u00fa siln\u00e9 bezpe\u010dnostn\u00e9 funkcie, ako je \u0161ifrovanie, riadenie pr\u00edstupu a auditn\u00e9 z\u00e1znamy, ktor\u00e9 chr\u00e1nia citliv\u00e9 inform\u00e1cie pred neopr\u00e1vnen\u00fdm pr\u00edstupom alebo \u00fanikom.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1720799461046\"><strong class=\"schema-faq-question\">Ak\u00e9 s\u00fa\u00a0<strong>niektor\u00e9 v\u00fdzvy spojen\u00e9 so spr\u00e1vou datab\u00e1z<\/strong>?<\/strong> <p class=\"schema-faq-answer\"><em>Medzi v\u00fdzvy pri spr\u00e1ve datab\u00e1z patr\u00ed fragment\u00e1cia \u00fadajov, probl\u00e9my s integritou \u00fadajov a v\u00fdber spr\u00e1vneho datab\u00e1zov\u00e9ho rie\u0161enia pre konkr\u00e9tne obchodn\u00e9 potreby.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1720799473132\"><strong class=\"schema-faq-question\">Ak\u00e9 s\u00fa niektor\u00e9 osved\u010den\u00e9\u00a0<strong>postupy<\/strong>\u00a0spr\u00e1vy datab\u00e1z?<\/strong> <p class=\"schema-faq-answer\"><em>Medzi osved\u010den\u00e9 postupy spr\u00e1vy datab\u00e1z patr\u00ed pravideln\u00e9 z\u00e1lohovanie, \u0161ifrovanie \u00fadajov, \u00fadr\u017eba a aktualiz\u00e1cie na zabezpe\u010denie optim\u00e1lneho v\u00fdkonu a bezpe\u010dnosti.<\/em><\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Datab\u00e1zy s\u00fa zbierkou inform\u00e1ci\u00ed, ktor\u00e9 s\u00fa zvy\u010dajne usporiadan\u00e9 do tabuliek. \u00dadaje v datab\u00e1zach s\u00fa ulo\u017een\u00e9 tak, aby ich bolo mo\u017en\u00e9 \u013eahko vyh\u013eada\u0165 a pou\u017ei\u0165 pomocou&#8230;<\/p>\n","protected":false},"author":1,"featured_media":28583,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1969],"tags":[],"class_list":["post-28594","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mysql-database"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.4 (Yoast SEO v25.4) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u010co je to datab\u00e1za a ako funguje? 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Ak\u00e9 typy datab\u00e1z sa pou\u017e\u00edvaj\u00fa v d\u00e1tov\u00fdch centr\u00e1ch? \u2705 &#8212; hostkoss blog\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hostkoss.com\/b\/sk\/database\/\" \/>\n<meta property=\"og:site_name\" content=\"hostkoss blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/facebook.com\/hostkoss\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-02-29T13:28:28+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-07-13T09:47:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/hostkoss.com\/b\/wp-content\/uploads\/2024\/02\/hostkoss-blog-database-hostkoss.com_-1-1-700x368.webp\" \/>\n<meta name=\"author\" content=\"Andrii Kostashchuk\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"\u010co je to datab\u00e1za a ako funguje? &#8212; hostkoss blog\" \/>\n<meta name=\"twitter:description\" content=\"Datab\u00e1zy v kocke: \u010do je to datab\u00e1za, na \u010do sl\u00fa\u017ei? 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