Report Definition Language (RDL) is a standard proposed by Microsoft for defining reports.[1]
RDL is an XML application primarily used with Microsoft SQL Server Reporting Services. It is usually written using Visual Studio, although there are also third-party tools; it may also be created or edited by hand in a text editor. SQL Server Reporting Services or other third-party reporting frameworks use RDL to define charts, graphs, calculations, text, images (through links), and other report objects and render them in a variety of formats.
There are three high-level sections in a typical RDL file: