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<!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> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta http-equiv="Content-Script-Type" content="text/javascript" /> <title>Materialized Views</title> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1" /> <meta name="date" content="2009-04-23T10:13:6Z" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="Materialized Views" /> <meta name="relnum" content="11g Release 1 (11.1)" /> <meta name="partnum" content="A12345-01" /> <link rel="copyright" href="./dcommon/html/cpyr.htm" title="Copyright" type="text/html" /> <link rel="stylesheet" href="./dcommon/css/blafdoc.css" title="Oracle BLAFDoc" type="text/css" /> <link rel="contents" href="toc.htm" title="Contents" type="text/html" /> <link rel="prev" href="newglossary005.htm" title="Previous" type="text/html" /> <link rel="next" href="newglossary007.htm" title="Next" type="text/html" /> <script src="./callback.js" type="text/javascript"></script> <noscript>Your browser does not support JavaScript. This help page requires JavaScript to render correctly.</noscript> </head> <body> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="86%" /> <col width="*" /> <tr valign="bottom"> <td align="left"></td> <td align="center"><a href="newglossary005.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="newglossary007.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="BGBDFDFA" name="BGBDFDFA"></a><a id="ADVRP366" name="ADVRP366"></a></p> <div class="sect1"><!-- infolevel="all" infotype="General" --> <h1>Materialized Views</h1> <p>A materialized view is a local copy of table data that originates from one or more remote master tables. Applications can query the data in a read-only table materialized view, but cannot insert, update, or delete rows in the materialized view. However, applications can query, insert, update, or delete the rows in an updatable materialized view.</p> <p>Oracle's data replication facility supports independent table materialized views as well as materialized views that are part of a materialized view group. Consider the following issues when deciding whether to create a new materialized view as part of a materialized view group:</p> <ul> <li> <p>A materialized view group can contain simple, read-only and updatable materialized views.</p> </li> <li> <p>A materialized view group does not support complex read-only materialized views. Oracle creates all complex read-only materialized views independent of any materialized view group.</p> </li> </ul> <div class="helpinfonote"> <p><span class="bold">Note: </span>Materialized views were called snapshots in past releases. The terms "materialized view" and "snapshot" are synonymous.</p> </div> <div class="helpinfonotealso"> <h2>Related Topics</h2> <p><a href="getting_started002.htm#CHDFHHJC">Flowchart for Creating a Replication Environment</a></p> </div> </div> <!-- class="sect1" --> <!-- Start Footer --> <div class="footer"> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="86%" /> <col width="*" /> <tr> <td align="left"><span class="copyrightlogo">Copyright © 2005, 2009, Oracle and/or its affiliates. All rights reserved.</span><br /> <a href="./dcommon/html/cpyr.htm"><span class="copyrightlogo">Legal Notices</span></a></td> <td align="center"><a href="newglossary005.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="newglossary007.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> </div> <!-- class="footer" --> </body> </html>
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