MySQL jest \u015bwiatowym systemem relacyjnych baz danych i prawdopodobnie najcz\u0119\u015bciej u\u017cywan\u0105 aplikacj\u0105 w tej kategorii. Oprogramowanie jest dost\u0119pne jako wolna wersja open source oraz jako wersja komercyjna dla r\u00f3\u017cnych system\u00f3w operacyjnych. Wielu dostawc\u00f3w us\u0142ug hostingowych oferuje mo\u017cliwo\u015b\u0107 integracji MySQL w ramach swoich pakiet\u00f3w. Liczne dynamiczne obecno\u015bci w sieci wykorzystuj\u0105 oprogramowanie jako podstaw\u0119.<\/p>\n
MySQL zosta\u0142 opracowany w 1994 roku przez szwedzk\u0105 firm\u0119 MySQL AB, kt\u00f3ra zosta\u0142a przej\u0119ta przez Sun Microsystems w 2008 roku. Od 2010 r. te dwie firmy s\u0105 cz\u0119\u015bci\u0105 kalifornijskiej firmy Oracle Corporation. Nazwa pochodzi od imienia c\u00f3rki Michaela Wildeniusa, jednego z za\u0142o\u017cycieli firmy. Wildenius i Axmark rozpocz\u0119li rozw\u00f3j systemu baz danych w 1994 roku. Pocz\u0105tkowo s\u0142u\u017cy\u0142 jako klon dla MySQL i mia\u0142 na celu dostarczenie baz danych oprogramowania UNIREG dla aplikacji internetowych. W 1995 r. mia\u0142o miejsce wewn\u0119trzne wydanie, w 1997 r. wniosek zosta\u0142 wydany w wersji 3.1. Mia\u0142o to oznacza\u0107, \u017ce rdze\u0144 MySQL ma ju\u017c d\u0142ug\u0105 histori\u0119. Od samego pocz\u0105tku oprogramowanie by\u0142o w stanie przetwarza\u0107 du\u017ce ilo\u015bci danych i zosta\u0142o zaprojektowane z my\u015bl\u0105 o doskona\u0142ej wydajno\u015bci. By\u0142o to cz\u0119\u015bciowo kosztem dost\u0119pno\u015bci i stabilno\u015bci. Na pocz\u0105tku zakres funkcji by\u0142 ograniczony, tylko kilka rodzaj\u00f3w tabel i nie by\u0142o mo\u017cliwo\u015bci zawierania transakcji. W styczniu 2001 r. na rynku pojawi\u0142a si\u0119 wersja 3.23, kt\u00f3ra umo\u017cliwia\u0142a transakcje i posiada\u0142a dwa rodzaje tabel. Wersja 4.0 zosta\u0142a wydana w marcu 2003 roku, 4.1 pod koniec 2004 roku, a wersja 5.0 w pa\u017adzierniku 2005 roku, ka\u017cda z rozszerzonymi funkcjami. Wersja 5.1 zosta\u0142a wydana w listopadzie 2008, a nast\u0119pnie MySQL 5.6 w 2012. Wersja 5.7 zosta\u0142a wydana w pa\u017adzierniku, a wersja 5.7.17 w po\u0142owie grudnia 2016.<\/p>\n
System relacyjnej bazy danych jest dost\u0119pny zar\u00f3wno bezp\u0142atnie jako wersja open source, jak i w wersji komercyjnej dla r\u00f3\u017cnych system\u00f3w operacyjnych. MySQL sk\u0142ada si\u0119 z kilku program\u00f3w administracyjnych, bazy danych, interfejs\u00f3w u\u017cytkownika i bibliotek. W po\u0142\u0105czeniu z PHP i Apache stanowi podstaw\u0119 wielu dynamicznych stron internetowych. Na ca\u0142ym \u015bwiecie zosta\u0142 on zainstalowany na ponad 50 milionach serwer\u00f3w. Google, Twitter, Facebook<\/a> & Co. korzystaj\u0105 z jego architektury i obs\u0142uguj\u0105 du\u017c\u0105 liczb\u0119 serwer\u00f3w MySQL. System dzia\u0142a na systemach Windows, Linux, Unix, Mac OSX, i5\/Os, Open VMS i ponad 20 innych platformach. Wielu dostawc\u00f3w us\u0142ug hostingowych oferuje MySQL jako cz\u0119\u015b\u0107 swoich pakiet\u00f3w oprogramowania. Dost\u0119pny jest oficjalny podr\u0119cznik, bezp\u0142atne wsparcie oferowane jest na licznych forach i grupach u\u017cytkownik\u00f3w. Oracle oferuje licencje wsparcia o r\u00f3\u017cnych poziomach wydajno\u015bci dla swojego Enterprise Edition, ale za op\u0142at\u0105. Jest on cz\u0119sto \u0142\u0105czony z innymi aplikacjami lub \u015brodowiskami do hostowania dynamicznych stron internetowych.<\/p>\n System bazodanowy zosta\u0142 napisany w j\u0119zykach programowania C i C++. Wykorzystuje j\u0105dra, kt\u00f3re umo\u017cliwiaj\u0105 wielow\u0105tkowo\u015b\u0107. Oprogramowanie mo\u017ce wi\u0119c korzysta\u0107 z zalet wielu procesor\u00f3w, je\u015bli s\u0105 one dost\u0119pne. Gwarantowana jest wysoka pr\u0119dko\u015b\u0107 przetwarzania i optymalne zarz\u0105dzanie pami\u0119ci\u0105. Jednocze\u015bnie mo\u017cesz tworzy\u0107 i zarz\u0105dza\u0107 wieloma bazami danych na jednym serwerze MySQL. W zale\u017cno\u015bci od systemu operacyjnego, liczba u\u017cywanych tabel jest r\u00f3\u017cna. Oprogramowanie umo\u017cliwia dost\u0119p do rekord\u00f3w, a tak\u017ce ich usuwanie, modyfikowanie i dodawanie. Poszczeg\u00f3lne bazy danych mog\u0105 by\u0107 dzielone na partycje, dzi\u0119ki czemu mo\u017cna zwi\u0119kszy\u0107 szybko\u015b\u0107 pracy. Systemy zarz\u0105dzania tre\u015bci\u0105 mog\u0105 wykorzystywa\u0107 MySQL jako niezawodn\u0105 i wydajn\u0105 baz\u0119 danych (np. WordPress<\/a>TYPO3, Drupal lub Joomla<\/a>).<\/p>\n MySQL przechowuje, zarz\u0105dza, wy\u015bwietla i zmienia dane w tabelach, a tak\u017ce dzia\u0142a jako klient-serwer. Oznacza to, \u017ce dana baza danych dzia\u0142a jako serwer. System baz danych dzia\u0142a szybko, jest przyjazny dla u\u017cytkownika i stabilny. Zalet\u0105 jest r\u00f3wnie\u017c wielow\u0105tkowo\u015b\u0107 i mo\u017cliwo\u015b\u0107 wielu u\u017cytkownik\u00f3w, \u0142atwe zarz\u0105dzanie autoryzacj\u0105 i optymalna wydajno\u015b\u0107. Ponadto jest on bardzo elastyczny ze wzgl\u0119du na kompatybilno\u015b\u0107 z ponad dwudziestoma r\u00f3\u017cnymi platformami.<\/p>","protected":false},"excerpt":{"rendered":" MySQL ist ein weltweit verbreitetes relationales Datenbanksystem und die wohl am h\u00e4ufigsten genutzte Anwendung in dieser Kategorie. Erh\u00e4ltlich ist die Software als kostenlose Open-Source-Version sowie als kommerzielle Version f\u00fcr verschiedene Betriebssysteme. Zahlreiche Webhosting-Anbieter bieten die M\u00f6glichkeit, MySQL als Teil ihrer Pakete zu integrieren. Zahlreiche dynamische Webauftritte nutzen die Software als Grundlage. Die Geschichte und Entstehung 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MySQL<\/h3>\n
Zalety MySQL<\/h3>\n