CINXE.COM
MySQL :: The world's most popular open source database
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head><script type="text/javascript" src="https://web-static.archive.org/_static/js/bundle-playback.js?v=7YQSqjSh" charset="utf-8"></script> <script type="text/javascript" src="https://web-static.archive.org/_static/js/wombat.js?v=txqj7nKC" charset="utf-8"></script> <script>window.RufflePlayer=window.RufflePlayer||{};window.RufflePlayer.config={"autoplay":"on","unmuteOverlay":"hidden"};</script> <script type="text/javascript" src="https://web-static.archive.org/_static/js/ruffle/ruffle.js"></script> <script type="text/javascript"> __wm.init("https://web.archive.org/web"); __wm.wombat("http://www.mysql.com/","20110623133246","https://web.archive.org/","web","https://web-static.archive.org/_static/", "1308835966"); </script> <link rel="stylesheet" type="text/css" href="https://web-static.archive.org/_static/css/banner-styles.css?v=p7PEIJWi" /> <link rel="stylesheet" type="text/css" href="https://web-static.archive.org/_static/css/iconochive.css?v=3PDvdIFv" /> <!-- End Wayback Rewrite JS Include --> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <meta name="verify-v1" content="ynzW/GE7rr+SwTxuVauAHAJHCND7JANXtoLBw5Ci6tY="/> <title>MySQL :: The world's most popular open source database</title> <link rel="stylesheet" type="text/css" media="screen" href="/web/20110623133246cs_/http://www.mysql.com/common/css/mysql.css"/> <link rel="stylesheet" type="text/css" media="projection" href="/web/20110623133246cs_/http://www.mysql.com/common/css/mysql.css"/> <link rel="stylesheet" type="text/css" media="print" href="/web/20110623133246cs_/http://www.mysql.com/common/css/print.css"/> <link rel="alternate" type="application/rss+xml" title="RSS feed" href="/web/20110623133246/http://www.mysql.com/mysql.rss"/> <link rel="shortcut icon" href="/web/20110623133246im_/http://www.mysql.com/common/themes/sakila/favicon.ico"/> <script language="javascript" type="text/javascript" src="/web/20110623133246js_/http://www.mysql.com/common/js/clear_search_text.js"></script> <noscript></noscript> <script language="javascript" type="text/javascript" src="/web/20110623133246js_/http://www.mysql.com/common/js/div_rotate.js"></script> <script language="javascript" type="text/javascript"> <!-- var divContent = new Array(); divContent[0] = "<a href=\"http://www.mysql.com/click.php?e=35396\"><img src=\"/common/themes/sakila/banners/b12-mysql-enterprise-demo.en.jpg\" alt=\"MySQL Enterprise Edition - Demo\" width=\"640\" height=\"220\" /></a>"; divContent[1] = "<a href=\"http://www.mysql.com/click.php?e=35393\"><img src=\"/common/themes/sakila/banners/b12-mysql-emea-ha-solutions.en.jpg\" alt=\"EMEA Events: High Availability Solutions for MySQL\" width=\"640\" height=\"220\" /></a>"; divContent[2] = "<a href=\"http://www.mysql.com/click.php?e=35337\"><img src=\"/common/themes/sakila/banners/b12-mysql-55-ga.en.png\" alt=\"MySQL 5.5 - Performance and Scalability - GA Now!\" width=\"640\" height=\"220\" /></a>"; divContent[3] = "<a href=\"http://www.mysql.com/click.php?e=35394\"><img src=\"/common/themes/sakila/banners/b12-mysql-windows-online-forum.en.jpg\" alt=\"MySQL on Windows Online Forum\" width=\"640\" height=\"220\" /></a>"; divContent[4] = "<a href=\"http://www.mysql.com/click.php?e=35377\"><img src=\"/common/themes/sakila/banners/b12-oracle-magazine-banner.en.png\" alt=\"Open for Business - MySQL community wins with better innovation, support, and integration\" width=\"640\" height=\"220\" /></a>"; divContent[5] = "<a href=\"http://www.mysql.com/click.php?e=35390\"><img src=\"/common/themes/sakila/banners/b12-mysql-training-smart.en.jpg\" alt=\"Training Smart: Cut Your DBA Training Time\" width=\"640\" height=\"220\" /></a>"; divContent[6] = "<a href=\"http://www.mysql.com/click.php?e=35267\"><img src=\"/common/themes/sakila/banners/b12-mysql-cluster-71.en.jpg\" alt=\"MySQL Cluster 7.1 - Carrier Grade Availability and Performance\" width=\"640\" height=\"220\" /></a>"; var imageRotateInterval = setInterval("rotateDiv('fp_banners', false)",14000); var divRotateCurrentKey = 1; //--> </script> <script type="text/javascript"> document.write(unescape("%3Cscript src='" + document.location.protocol + "//web.archive.org/web/20110623133246/http://s7.addthis.com/js/250/addthis_widget.js' type='text/javascript'%3E%3C/script%3E")); </script> </head> <body class="www"> <div id="container"> <!--UdmComment--> <a class="skipToContent" href="#mainContent">Skip navigation links</a> <div id="header"> <div class="left"> <div id="logo"> <a href="https://web.archive.org/web/20110623133246/http://www.mysql.com/" title="MySQL"> <img src="/web/20110623133246im_/http://www.mysql.com/common/logos/logo-mysql-110x57.png" alt="MySQL" width="110" height="57"/></a> </div> <div id="tagline">The world's most popular open source database</div> </div> <div class="right"> <div id="contact_rep"><a href="https://web.archive.org/web/20110623133246/http://www.mysql.com/about/contact/">Contact a MySQL Representative</a></div> <div id="search_box"> <!-- Start Search --> <form id="searchform" name="searchform" method="get" action="https://web.archive.org/web/20110623133246/http://search.oracle.com/search/search"> <input type="text" id="q" name="q" value="Search" class="swap_value" onfocus="clearSearchText();"/> <input type="hidden" name="group" value="MySQL"/> <input type="image" src="/web/20110623133246im_/http://www.mysql.com/common/themes/sakila/search_g.png" id="go" alt="Search" title="Search" value="Search"/> </form> </div> <!-- End Search --> <div id="login"> <p><a href="https://web.archive.org/web/20110623133246/http://www.mysql.com/login/?dest=http%3a%2f%2fwww.mysql.com%2F">Login</a> | <a href="https://web.archive.org/web/20110623133246/http://www.mysql.com/register.php">Register</a></p> </div> </div> </div> <!-- MySQL Navigation --> <div id="nav_container"> <div id="flags"> <ul> <li><a href="https://web.archive.org/web/20110623133246/http://www.mysql.fr/" title="MySQL.com en Fran莽ais"><img src="/web/20110623133246im_/http://www.mysql.com/common/themes/sakila/flag_fr.png" alt="MySQL.com en Fran莽ais" width="15" height="24"/></a></li><li><a href="https://web.archive.org/web/20110623133246/http://www.mysql.de/" title="MySQL.com auf Deutsch"><img src="/web/20110623133246im_/http://www.mysql.com/common/themes/sakila/flag_de.png" alt="MySQL.com auf Deutsch" width="15" height="24"/></a></li><li><a href="https://web.archive.org/web/20110623133246/http://www.mysql.it/" title="Italiana"><img src="/web/20110623133246im_/http://www.mysql.com/common/themes/sakila/flag_it.png" alt="Italiana" width="15" height="24"/></a></li><li><a href="https://web.archive.org/web/20110623133246/http://www-jp.mysql.com/" title="鏃ユ湰"><img src="/web/20110623133246im_/http://www.mysql.com/common/themes/sakila/flag_jp.png" alt="鏃ユ湰" width="15" height="24"/></a></li> </ul> </div> <div id="tab_first"> <ul> <li class="current"><a href="https://web.archive.org/web/20110623133246/http://www.mysql.com/">MySQL.com</a></li> <li class="first"><a href="https://web.archive.org/web/20110623133246/http://www.mysql.com/downloads/">Downloads (GA)</a></li> <li><a href="https://web.archive.org/web/20110623133246/https://customer.mysql.com/">Customer Login</a></li> </ul> </div> <div id="mysql_menu"> <ul> <li class="current"><a class="current " href="/web/20110623133246/http://www.mysql.com/">Home</a> </li> <li class="link"><a href="/web/20110623133246/http://www.mysql.com/products/">Products</a> </li> <li class="link"><a href="/web/20110623133246/http://www.mysql.com/services/">Services</a> </li> <li class="link"><a href="/web/20110623133246/http://www.mysql.com/partners/">Partners</a> </li> <li class="link"><a href="/web/20110623133246/http://www.mysql.com/customers/">Customers</a> </li> <li class="link"><a href="/web/20110623133246/http://www.mysql.com/why-mysql/">Why MySQL?</a> </li> <li class="link"><a href="/web/20110623133246/http://www.mysql.com/news-and-events/">News & Events</a> </li> <li class="link last"><a href="/web/20110623133246/http://www.mysql.com/buy-mysql/">How to Buy</a> </li> </ul> </div> <div id="og_sakila"> </div> <div id="og_title"> </div> </div> <!-- End Navigation Container --> <!--/UdmComment--> <div class="page_container"> <!-- Main content --> <a name="mainContent"></a> <div id="page"> <!-- Start Sidebar (Get Started, Spotlight & 30 Days Trial) --> <div id="sidebar"> <div id="menu_title">Get Started</div> <div id="menu"> <ul> <li><a href="/web/20110623133246/http://www.mysql.com/trials/">Try Now</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/products/enterprise">MySQL Enterprise Edition</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/news-and-events/web-seminars/">Free Web Seminars</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/why-mysql/white-papers/">White Papers</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/oem/">ISVs and OEMs</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/training/">MySQL Training</a></li> <li><a href="https://web.archive.org/web/20110623133246/http://shop.mysql.com/">Buy Now</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/about/contact/">Contact Us</a></li> </ul> </div> <div id="sidebar-banner"> <a href="/web/20110623133246/http://www.mysql.com/trials/"><img src="/web/20110623133246im_/http://www.mysql.com/common/themes/sakila/banners/h12-enterprise-trial.en.png" alt="MySQL Enterprise Edition Trial" width="215" height="93" border="0"/></a> </div> <div id="spotlight"> <div class="inside"> <div class="promo"> <a href="https://web.archive.org/web/20110623133246/http://www.mysql.com/why-mysql/scaleout/thephonehouse.html"><div class="logo"><img src="/web/20110623133246im_/http://www.mysql.com/common/logos/company/phonehouse.gif" alt="The Phone House Telecom GmbH" border="0"/></div><p>“MySQL's high scalability and attractive cost-performance ratio ensure that our applications can keep pace with our growing volume of data.”</p><p>— Thomas Hutters, Director Data Processing Center, The Phone House Telecom GmbH</p></a></div> </div> <span class="bottom"></span> </div> </div> <!-- End Sidebar --> <!-- Start Body Content --> <div id="fp_main"> <!-- Start Banner --> <div id="imageRotateGroup"> <span id="imageRotateIndex0" class="imageRotateIndex"> <ul> <li><a href="javascript: showSpecificRotateDiv('fp_banners', 0)">1</a></li> </ul> </span> <span id="imageRotateIndex1" class="imageRotateIndexCurrent"> <ul> <li><a href="javascript: showSpecificRotateDiv('fp_banners', 1)">2</a></li> </ul> </span> <span id="imageRotateIndex2" class="imageRotateIndex"> <ul> <li><a href="javascript: showSpecificRotateDiv('fp_banners', 2)">3</a></li> </ul> </span> <span id="imageRotateIndex3" class="imageRotateIndex"> <ul> <li><a href="javascript: showSpecificRotateDiv('fp_banners', 3)">4</a></li> </ul> </span> <span id="imageRotateIndex4" class="imageRotateIndex"> <ul> <li><a href="javascript: showSpecificRotateDiv('fp_banners', 4)">5</a></li> </ul> </span> <span id="imageRotateIndex5" class="imageRotateIndex"> <ul> <li><a href="javascript: showSpecificRotateDiv('fp_banners', 5)">6</a></li> </ul> </span> <span id="imageRotateIndex6" class="imageRotateIndex"> <ul> <li><a href="javascript: showSpecificRotateDiv('fp_banners', 6)">7</a></li> </ul> </span> </div> <div id="fp_banners"> <a href="https://web.archive.org/web/20110623133246/http://www.mysql.com/click.php?e=35393"><img src="/web/20110623133246im_/http://www.mysql.com/common/themes/sakila/banners/b12-mysql-emea-ha-solutions.en.jpg" alt="EMEA Events: High Availability Solutions for MySQL" width="640" height="220"/></a> </div> <!-- End Banner --> <!-- Start Web Seminars --> <div id="fp_featured"> <h2>Free Web Seminars <span><a href="/web/20110623133246/http://www.mysql.com/news-and-events/web-seminars/rss.php?webinars=live&language=en" title="RSS Feed for MySQL Web Seminars"><img src="/web/20110623133246im_/http://www.mysql.com/common/themes/sakila/rss.png" alt="Free Web Seminars" border="0"/></a></span></h2> <ul> <li><a href="/web/20110623133246/http://www.mysql.com/news-and-events/web-seminars/">More Web Seminars</a></li> </ul> </div> <!-- End Web Seminars --> <!-- Start Columns --> <div id="fp_columns"> <table cellspacing="10"> <tr> <td> <h2>Products</h2> <ul> <li><a href="/web/20110623133246/http://www.mysql.com/enterprise/">MySQL Enterprise Edition</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/cluster/">MySQL Cluster CGE</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/oem/">MySQL Embedded (OEM/ISV)</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/products/">More</a></li> </ul> <h2>MySQL In Action</h2> <ul> <li><a href="/web/20110623133246/http://www.mysql.com/why-mysql/isv-oem-corner/">ISV/OEM Corner</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/communications/">Telecom & Communications</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/why-mysql/windows.html">MySQL on Windows</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/why-mysql/">More</a></li> </ul> </td> <td> <h2>Resources</h2> <ul> <li><a href="/web/20110623133246/http://www.mysql.com/why-mysql/white-papers/">White Papers</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/training/">MySQL Training</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/tcosavings/">TCO Calculator</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/trials/">Try Now</a></li> <li><a href="https://web.archive.org/web/20110623133246/http://www.oracle.com/pls/ebn/swf_viewer.load?p_shows_id=10146324">Demo</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/about/contact/">Contact Us</a></li> </ul> <h2>MySQL Consulting</h2> <ul> <li><a href="/web/20110623133246/http://www.mysql.com/consulting/">MySQL Performance Tuning</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/consulting/">High Availability Jumpstart</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/consulting/">Architecture & Design</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/consulting/">More Consulting</a></li> </ul> </td> <td> <h2>News & Events</h2> <ul> <li><a href="https://web.archive.org/web/20110623133246/http://www.oracle.com/webapps/events/ns/EventsDetail.jsp?p_eventId=134424&src=7314534&src=7314534&Act=7">Event: High Availability Solutions for MySQL - London, 29. June 2011</a></li> <li><a href="https://web.archive.org/web/20110623133246/http://www.mysql.com/news-and-events/news/article_1691.html">MySQL.com Security Notice</a></li> <li><a href="https://web.archive.org/web/20110623133246/http://www.oracle.com/us/corporate/press/358791">Oracle Announces First MySQL 5.6 Development Milestone Release</a></li> <li><a href="https://web.archive.org/web/20110623133246/http://eventreg.oracle.com/webapps/events/ns/EventsDetail.jsp?p_eventId=131822&src=7011174&src=7011174&Act=168">Join Us at the OTN Developer Day MySQL</a></li> <li><a href="https://web.archive.org/web/20110623133246/http://www.oracle.com/us/corporate/press/338122">Oracle Announces Oracle OpenWorld 2011 Call for Papers</a></li> <li><a href="https://web.archive.org/web/20110623133246/http://www.oracle.com/us/corporate/press/339030">Oracle Enhances MySQL Enterprise Edition</a></li> </ul> <ul> <li><a href="/web/20110623133246/http://www.mysql.com/news-and-events/">More News & Events</a></li> </ul> </td> </tr> </table> </div> <!-- End Columms --> </div> <!-- End Body Content --> </div> <!--End Container --> <div id="sub-footer"> <a href="https://web.archive.org/web/20110623133246/http://www.mysql.com/click.php?e=35350"><img src="/web/20110623133246im_/http://www.mysql.com/common/themes/sakila/banners/s12-oracles-mysql-blog.en.png" alt="Oracle\s MySQL Blog - Read Now" width="222" height="100" border="0"/></a><a href="https://web.archive.org/web/20110623133246/http://www.mysql.com/click.php?e=35351"><img src="/web/20110623133246im_/http://www.mysql.com/common/themes/sakila/banners/s12-mysql-on-facebook.en.png" alt="Join MySQL on Facebook" width="222" height="100" border="0"/></a><a href="https://web.archive.org/web/20110623133246/http://www.mysql.com/click.php?e=35185"><img src="/web/20110623133246im_/http://www.mysql.com/common/themes/sakila/banners/s12-mysql-on-twitter.en.png" alt="Follow MySQL on Twitter" width="222" height="100" border="0"/></a><a href="https://web.archive.org/web/20110623133246/http://www.mysql.com/click.php?e=35174"><img src="/web/20110623133246im_/http://www.mysql.com/common/themes/sakila/banners/s12-newsletter-subscribe.en.png" alt="MySQL Newsletter - Subscribe Today!" width="222" height="100" border="0"/></a></div> </div> </div> <div id="footer"> <div class="links"> <ul> <li class="top"><a href="/web/20110623133246/http://www.mysql.com/products/">Products</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/products/enterprise/">MySQL Enterprise Edition</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/products/standard/">MySQL Standard Edition</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/products/classic/">MySQL Classic Edition</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/products/cluster/">MySQL Cluster CGE</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/oem/">MySQL Embedded (OEM/ISV)</a></li> </ul> </div> <div class="links"> <ul> <li class="top"><a href="/web/20110623133246/http://www.mysql.com/downloads/">Downloads (GA)</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/downloads/mysql/">MySQL Server</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/downloads/cluster/">MySQL Cluster</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/downloads/workbench/">MySQL Workbench</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/downloads/connector/">MySQL Connectors</a></li> </ul> </div> <div class="links"> <ul> <li class="top"><a href="/web/20110623133246/http://www.mysql.com/services/">Services</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/training/">Training</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/certification/">Certification</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/consulting/">Consulting</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/support/">Support</a></li> </ul> </div> <div class="links"> <ul> <li class="top"><a href="/web/20110623133246/http://www.mysql.com/about/">About MySQL</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/about/contact/">Contact Us</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/buy-mysql/">How to Buy</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/partners/">Partners</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/about/legal/">Legal</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/about/legal/mysql_web_privacy_policy.html">Privacy Policy</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/about/jobs/">Job Opportunities</a></li> <li><a href="/web/20110623133246/http://www.mysql.com/sitemap.html">Site Map</a></li> </ul> </div> <div id="search" class="en"> <form id="footer_search" action="https://web.archive.org/web/20110623133246/http://search.oracle.com/search/search" method="get"> <input type="text" id="f_q" name="q" value="" class="swap_value" onfocus="clearSearchText();"/> <input type="hidden" name="group" value="MySQL"/> <input type="image" src="/web/20110623133246im_/http://www.mysql.com/common/themes/sakila/footer_search_g.png" id="f_go" alt="Search" title="Search" value="Search"/> </form> </div> </div><!-- End Footer --> <div id="copyright-oracle"><a href="https://web.archive.org/web/20110623133246/http://www.oracle.com/"><img src="/web/20110623133246im_/http://www.mysql.com/common/logos/logo-oracle-red-91x22.gif" alt="Oracle" width="91" height="22" border="0"/></a> <span>© 2010, Oracle Corporation and/or its affiliates</span></div> <script type="text/javascript" src="/web/20110623133246js_/http://www.mysql.com/common/js/s_code_remote.js?ver=20091011"></script> </body> </html><!-- FILE ARCHIVED ON 13:32:46 Jun 23, 2011 AND RETRIEVED FROM THE INTERNET ARCHIVE ON 07:38:18 Mar 02, 2025. JAVASCRIPT APPENDED BY WAYBACK MACHINE, COPYRIGHT INTERNET ARCHIVE. ALL OTHER CONTENT MAY ALSO BE PROTECTED BY COPYRIGHT (17 U.S.C. SECTION 108(a)(3)). --> <!-- playback timings (ms): captures_list: 1.216 exclusion.robots: 0.046 exclusion.robots.policy: 0.026 esindex: 0.059 cdx.remote: 7.155 LoadShardBlock: 216.551 (6) PetaboxLoader3.datanode: 217.813 (7) load_resource: 184.241 PetaboxLoader3.resolve: 132.913 -->