ADO.NET is a set of libraries included in the .Net framework to facilitate the communication of applications with various data storage mechanisms. These libraries form the basis for all third parties to provide data access services to users of .Net applications. Visual Studio 2005 and 2008 did not change the data access model. In fact ADO.NET 2 is the longest running Microsoft data access technology without a major revision. I don’t know if this is going to change in .Net 4, but the stability of ADO.NET is a major reason for its adoption in VistaDB. In this article I going to give a high level overview of the ADO.NET object model and how VistaDB supports that model. I will then follow up with more articles discussing specifics for this model.