{"id":31153,"date":"2024-02-29T15:28:28","date_gmt":"2024-02-29T13:28:28","guid":{"rendered":"https:\/\/hostkoss.com\/b\/?p=31153"},"modified":"2024-07-16T14:05:21","modified_gmt":"2024-07-16T11:05:21","slug":"database","status":"publish","type":"post","link":"https:\/\/hostkoss.com\/b\/hu\/database\/","title":{"rendered":"Mi az adatb\u00e1zis \u00e9s mi\u00e9rt fontos az \u00fczleti \u00e9letben?"},"content":{"rendered":"\n<p><strong>Az adatb\u00e1zisok \u00e1ltal\u00e1ban t\u00e1bl\u00e1zatokba rendezett inform\u00e1ci\u00f3k gy\u0171jtem\u00e9nyei.<\/strong> Az adatb\u00e1zisokban az adatokat \u00fagy t\u00e1rolj\u00e1k, hogy egy sz\u00e1m\u00edt\u00f3g\u00e9pes program k\u00f6nnyen lek\u00e9rdezhesse \u00e9s felhaszn\u00e1lhassa \u0151ket.<\/p>\n\n\n\n<p><strong>Az adatb\u00e1zisok az\u00e9rt fontosak a v\u00e1llalkoz\u00e1sok sz\u00e1m\u00e1ra, mert olyan inform\u00e1ci\u00f3kat t\u00e1rolnak,<\/strong> amelyek elengedhetetlenek a v\u00e1llalat m\u0171k\u00f6d\u00e9s\u00e9hez, p\u00e9ld\u00e1ul \u00fcgyf\u00e9ladatokat, lelt\u00e1ri nyilv\u00e1ntart\u00e1sokat \u00e9s megrendel\u00e9seket. Az ilyen t\u00edpus\u00fa inform\u00e1ci\u00f3khoz gyorsan \u00e9s pontosan hozz\u00e1 lehet f\u00e9rni an\u00e9lk\u00fcl, hogy egy halom pap\u00edralap\u00fa nyilv\u00e1ntart\u00e1s k\u00f6z\u00f6tt kellene v\u00e1logatni, vagy megpr\u00f3b\u00e1ln\u00e1nk megjegyezni, hogy az egyes adatokat hol t\u00e1rolj\u00e1k.<\/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\">Mik azok az RDBMS, NoSQL \u00e9s SQL adatb\u00e1zisok?<\/h2>\n\n\n\n<p>A <strong>rel\u00e1ci\u00f3s adatb\u00e1zis-kezel\u0151 rendszer (RDBMS)<\/strong> az adatok t\u00e1bl\u00e1zatokban t\u00f6rt\u00e9n\u0151 t\u00e1rol\u00e1s\u00e1ra, visszakeres\u00e9s\u00e9re \u00e9s kezel\u00e9s\u00e9re szolg\u00e1l\u00f3 adatb\u00e1zisok egyik t\u00edpusa. Az adatokat sorokban \u00e9s oszlopokban t\u00e1rolja.<\/p>\n\n\n\n<p>A <strong>NoSQL-adatb\u00e1zisok olyan probl\u00e9m\u00e1k megold\u00e1s\u00e1ra szolg\u00e1l<\/strong> nak, amelyekre a DBMS-ek nem k\u00e9pesek, mint p\u00e9ld\u00e1ul a struktur\u00e1latlan adatok t\u00e1rol\u00e1sa, az elosztott t\u00e1rol\u00e1s, a sk\u00e1l\u00e1zhat\u00f3s\u00e1g \u00e9s a teljes\u00edtm\u00e9ny.<\/p>\n\n\n\n<p>Az <strong>SQL-adatb\u00e1zisok gyorsabbak, mint a NoSQL-adatb\u00e1zisok<\/strong>, de term\u00e9szet\u00fckn\u00e9l fogva nem sk\u00e1l\u00e1zhat\u00f3k. Nem t\u00e1mogatj\u00e1k j\u00f3l a struktur\u00e1latlan adatokat, ez\u00e9rt nem haszn\u00e1lhat\u00f3k nagy adatelemz\u00e9sre.<\/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\">Hogyan m\u0171k\u00f6dik az adatb\u00e1zis<\/h2>\n\n\n\n<p><strong>A rel\u00e1ci\u00f3s adatb\u00e1zis t\u00e1bl\u00e1zatokban t\u00e1rolja az adatokat.<\/strong> A t\u00e1bl\u00e1k sorokb\u00f3l \u00e9s oszlopokb\u00f3l \u00e1llnak. A sor a t\u00e1bl\u00e1zat egyetlen rekordja, az oszlop pedig egy adott mez\u0151 az egyes sorokban.<\/p>\n\n\n\n<p>Az oszlopos <strong>adatb\u00e1zis oszlopokban t\u00e1rolja az adatokat<\/strong>, amelyek az egyes sorok meghat\u00e1rozott mez\u0151i. Az oszlopok rendezett sorrendben t\u00e1rol\u00f3dnak, hogy k\u00f6nnyebb legyen lek\u00e9rdez\u00e9seket v\u00e9grehajtani r\u00e1juk.<\/p>\n\n\n\n<p>A <strong>kulcs- \u00e9s \u00e9rt\u00e9kt\u00e1rak az adatokat<\/strong> kulcs-\u00e9rt\u00e9k p\u00e1rok vagy kulcs-\u00e9rt\u00e9k list\u00e1k form\u00e1j\u00e1ban <strong>t\u00e1rolj\u00e1k<\/strong>. Ez azt jelenti, hogy minden adat objektumk\u00e9nt t\u00e1rol\u00f3dik, \u00e9s nincs sz\u00fcks\u00e9g t\u00e1bl\u00e1zatokra vagy sorokra a rendszerez\u00e9shez.<\/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\">Az adatb\u00e1zisok t\u00edpusai \u00e9s az egyes t\u00edpusok el\u0151nyei\/h\u00e1tr\u00e1nyai<\/h2>\n\n\n\n<p>A <strong>rel\u00e1ci\u00f3s adatb\u00e1zisok<\/strong> a ma haszn\u00e1latos <strong>adatb\u00e1zisok legelterjedtebb t\u00edpusa<\/strong>. Az adatokat sorokkal \u00e9s oszlopokkal rendelkez\u0151 t\u00e1bl\u00e1zatokban t\u00e1rolj\u00e1k. Ezekhez az adatb\u00e1zisokhoz az erre a c\u00e9lra kifejlesztett SQL nyelv seg\u00edts\u00e9g\u00e9vel lehet hozz\u00e1f\u00e9rni.<\/p>\n\n\n\n<p>Az <strong>oszlopos adatb\u00e1zisok oszlopok form\u00e1j\u00e1ban t\u00e1rolj\u00e1k az adatokat<\/strong>, ami hat\u00e9konyabb, mint a soralap\u00fa t\u00e1rol\u00e1s. Ez gyorsabb lek\u00e9rdez\u00e9seket \u00e9s adatb\u00e1zis-friss\u00edt\u00e9seket tesz lehet\u0151v\u00e9. Az oszlopos adatb\u00e1zisok kevesebb mem\u00f3ri\u00e1t is foglalnak, mint a soralap\u00fa adatb\u00e1zisok, ami azt jelenti, hogy kevesebb RAM-ot ig\u00e9nyelnek a futtat\u00e1sukhoz.<\/p>\n\n\n\n<p>A <strong>kulcs- \u00e9s \u00e9rt\u00e9kt\u00e1rak<\/strong> abban <strong>k\u00fcl\u00f6nb\u00f6znek a rel\u00e1ci\u00f3s \u00e9s<\/strong> oszlopos adatb\u00e1zisokt\u00f3l, hogy nem ig\u00e9nyelnek el\u0151zetes s\u00e9matervez\u00e9st, \u00e9s lehet\u0151v\u00e9 teszik az adatok tetsz\u0151leges sorrendben t\u00f6rt\u00e9n\u0151 t\u00e1rol\u00e1s\u00e1t an\u00e9lk\u00fcl, hogy szerkezet\u00fcket el\u0151re meg kellene hat\u00e1rozni.<\/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>K\u00f6vetkeztet\u00e9s:<\/strong><br>Az adatb\u00e1zis az adatok olyan m\u00f3don szervezett gy\u0171jtem\u00e9nye, amely megk\u00f6nny\u00edti az emberek sz\u00e1m\u00e1ra a keres\u00e9st \u00e9s a felhaszn\u00e1l\u00e1st. Az adatb\u00e1zisok minden szervezet szerves r\u00e9sz\u00e9t k\u00e9pezik. Seg\u00edtenek a v\u00e1llalat \u00e1ltal gy\u0171jt\u00f6tt \u00f6sszes adatot rendszerezni \u00e9s hozz\u00e1f\u00e9rhet\u0151v\u00e9 tenni. Sokf\u00e9le c\u00e9lra haszn\u00e1lhat\u00f3k, p\u00e9ld\u00e1ul az \u00fcgyf\u00e9ladatok t\u00e1rol\u00e1s\u00e1ra, a tranzakci\u00f3k feldolgoz\u00e1s\u00e1ra vagy a k\u00e9szletek nyilv\u00e1ntart\u00e1s\u00e1ra.<\/p>\n<\/blockquote>\n\n\n\n<p><strong>Olvassa el tov\u00e1bb\u00e1:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/hostkoss.com\/b\/hu\/dump-mysql-database\/\" target=\"_blank\" rel=\"noreferrer noopener\">Hogyan k\u00e9sz\u00edts\u00fcnk MySQL adatb\u00e1zis dumpot \u00e9s mi\u00e9rt van erre sz\u00fcks\u00e9g\u00fcnk?<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/hostkoss.com\/b\/hu\/centos-vs-ubuntu\/\" target=\"_blank\" rel=\"noreferrer noopener\">A legjobb oper\u00e1ci\u00f3s rendszer kiv\u00e1laszt\u00e1sa a szerverhez: CentOS vs. Ubuntu<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/hostkoss.com\/b\/hu\/http-2-nginx-ubuntu\/\" target=\"_blank\" rel=\"noreferrer noopener\">HTTP\/2 t\u00e1mogat\u00e1s konfigur\u00e1l\u00e1sa az Nginxben Ubuntu 18.04 alatt<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/hostkoss.com\/b\/hu\/vds-vps\/\" target=\"_blank\" rel=\"noreferrer noopener\">Mi az a VDS\/VPS szerver \u00e9s hogyan v\u00e1lasszuk ki a legjobbat?<\/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\">K\u00e9rd\u00e9sek \u00e9s v\u00e1laszok az adatb\u00e1zissal kapcsolatban<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1721036924447\"><strong class=\"schema-faq-question\"><strong>Mi\u00e9rt fontosak az adatb\u00e1zisok az \u00fczleti \u00e9letben?<\/strong><\/strong> <p class=\"schema-faq-answer\"><em>Az adatb\u00e1zisok seg\u00edtenek a v\u00e1llalatoknak az adatok hat\u00e9kony rendszerez\u00e9s\u00e9ben, t\u00e1rol\u00e1s\u00e1ban \u00e9s visszakeres\u00e9s\u00e9ben, lehet\u0151v\u00e9 t\u00e9ve a hat\u00e9konyabb d\u00f6nt\u00e9shozatalt \u00e9s a racionaliz\u00e1lt m\u0171k\u00f6d\u00e9st.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1721036942404\"><strong class=\"schema-faq-question\"><strong>Milyen t\u00edpus\u00fa adatb\u00e1zisok \u00e1llnak a v\u00e1llalkoz\u00e1sok rendelkez\u00e9s\u00e9re<\/strong>?<\/strong> <p class=\"schema-faq-answer\"><em>A v\u00e1llalatok az adatt\u00e1rol\u00e1si \u00e9s -feldolgoz\u00e1si ig\u00e9nyeikt\u0151l f\u00fcgg\u0151en v\u00e1laszthatnak a rel\u00e1ci\u00f3s (SQL) \u00e9s a nem rel\u00e1ci\u00f3s (NoSQL) adatb\u00e1zisok k\u00f6z\u00f6tt.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1721036951765\"><strong class=\"schema-faq-question\"><strong>Hogyan jav\u00edtj\u00e1k az adatb\u00e1zisok az adatbiztons\u00e1got?<\/strong><\/strong> <p class=\"schema-faq-answer\"><em>Az adatb\u00e1zisok olyan er\u0151s biztons\u00e1gi funkci\u00f3kat k\u00edn\u00e1lnak, mint a titkos\u00edt\u00e1s, a hozz\u00e1f\u00e9r\u00e9s-szab\u00e1lyoz\u00e1s \u00e9s az ellen\u0151rz\u00e9si nyomvonalak, amelyek megv\u00e9dik az \u00e9rz\u00e9keny adatokat az illet\u00e9ktelen hozz\u00e1f\u00e9r\u00e9st\u0151l vagy a kisziv\u00e1rg\u00e1st\u00f3l.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1721036964268\"><strong class=\"schema-faq-question\">Milyen\u00a0<strong>kih\u00edv\u00e1sokat<\/strong>\u00a0rejt az\u00a0<strong>adatb\u00e1zis-kezel\u00e9s<\/strong>?<\/strong> <p class=\"schema-faq-answer\"><em>Az adatb\u00e1zis-kezel\u00e9s kih\u00edv\u00e1sai k\u00f6z\u00e9 tartozik az adatok t\u00f6redezetts\u00e9ge, az adatintegrit\u00e1si probl\u00e9m\u00e1k, valamint az adott \u00fczleti ig\u00e9nyeknek megfelel\u0151 adatb\u00e1zis-megold\u00e1s kiv\u00e1laszt\u00e1sa.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1721036977348\"><strong class=\"schema-faq-question\">Melyek az adatb\u00e1zis-kezel\u00e9s legjobb\u00a0<strong>gyakorlatai?<\/strong><\/strong> <p class=\"schema-faq-answer\"><em>Az adatb\u00e1zis-kezel\u00e9s legjobb gyakorlatai k\u00f6z\u00e9 tartozik a rendszeres biztons\u00e1gi ment\u00e9s, az adatok titkos\u00edt\u00e1sa, karbantart\u00e1sa \u00e9s friss\u00edt\u00e9se az optim\u00e1lis teljes\u00edtm\u00e9ny \u00e9s biztons\u00e1g biztos\u00edt\u00e1sa \u00e9rdek\u00e9ben.<\/em><\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Az adatb\u00e1zisok \u00e1ltal\u00e1ban t\u00e1bl\u00e1zatokba rendezett inform\u00e1ci\u00f3k gy\u0171jtem\u00e9nyei. Az adatb\u00e1zisokban az adatokat \u00fagy t\u00e1rolj\u00e1k, hogy egy sz\u00e1m\u00edt\u00f3g\u00e9pes program k\u00f6nnyen lek\u00e9rdezhesse \u00e9s felhaszn\u00e1lhassa \u0151ket. Az adatb\u00e1zisok az\u00e9rt&#8230;<\/p>\n","protected":false},"author":1,"featured_media":31141,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2120],"tags":[],"class_list":["post-31153","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>Mi az az adatb\u00e1zis \u00e9s hogyan m\u0171k\u00f6dik? &#8212; hostkoss blog<\/title>\n<meta name=\"description\" content=\"Adatb\u00e1zisok di\u00f3h\u00e9jban: mi az az adatb\u00e1zis, mire szolg\u00e1lnak? 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