Enesys RS Data Extension is a Reporting Services Data Processing Extension that makes it possible to use Microsoft SQL Server Reporting Services (2005 & 2008) for building reports over SharePoint (MOSS 2007 & WSS V3) lists data.
With
Enesys RS Data Extension query language based on XML, you can retrieve data from any SharePoint list (document library and form library are considered lists as well) and use it for building reports.
Enesys RS Data Extension query language also features commands for joining and merging lists data before reporting on them.
Enesys RS Data Extension also provides features for retrieving list collection, list permissions, web permissions and SharePoint groups for a specific site or a set of sites.

