olap.html

来自「基于mondrian 开源框架进行OLAP多维分析」· HTML 代码 · 共 31 行

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<html><!--  == $Id: //open/mondrian-release/3.0/doc/olap.html#2 $  == This software is subject to the terms of the Common Public License  == Agreement, available at the following URL:  == http://www.opensource.org/licenses/cpl.html.  == Copyright (C) 2002-2006 Julian Hyde  == All Rights Reserved.  == You must accept the terms of that agreement to use this software.  --><head>    <link rel="stylesheet" type="text/css" href="stylesheet.css"/>	<title>Pentaho Analysis Services: Aggregate Tables</title></head><body><!-- doc2web start --><!-- page title --><div class="contentheading">Mondrian and OLAP</div><!-- end page title --><p>Mondrian is an OLAP engine written in Java. It executes queries written in the MDX language, reading data from a relational database (RDBMS), and presents the results in a multidimensional format via a Java API. Let's go into what that means.</p><!-- ########################################  Online Analytical Processing ########################################### --><h3>Online Analytical Processing</h3><p>Online Analytical Processing (OLAP) means analysing large quantities of data in real-time. Unlike Online Transaction Processing (OLTP), where typical operations read and modify individual and small numbers of records, OLAP deals with data in bulk, and operations are generally read-only. The term 'online' implies that even though huge quantities of data are involved

olap.html - 源码说明

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