C# library for connecting different RDBMS : <p>I'm currently working on one project. I want to analyze a few things in the database, to see which is faster, more reliable, less resource-consuming.</p>

<p>I would like to create one program in C# and connect five databases. From that program, I will call the procedures and measure the time of execution.</p>

<p>Which library do I use in C# to connect: Microsoft SQL Server, Oracle, MySQL, PostgreSQL, IBM Db2 with Visual Studio? 
I have found this library on the internet: <a href="http://dbnetdata.codeplex.com/" rel="nofollow noreferrer">http://dbnetdata.codeplex.com/</a>
Has anyone used it? Does anyone know about another library?</p>
