上周花了好些时间去研究这两个玩意，了解了OLAP的基本原理，学习了一下OLAP查询语言MDX标准，下面是关于MDX的官方解释：
MDX was introduced by Microsoft with Microsoft SQL Server OLAP Services in around 1998, as the language component of the OLE DB for OLAP API. More recently, MDX has appeared as part of the XML for Analysis API. Microsoft proposed MDX as a standard, and its adoption among application writers and other OLAP providers is steadily increasing.
