Developer Reference : Data Access Methods : Data Provider for .NET : About This Document : What Are the Zen Data Providers?
 
What Are the Zen Data Providers?
The Zen ADO.NET data providers are managed data providers, built with 100% managed code. The data providers are native wire protocol providers, which means that the provider does not have to call out to unmanaged code, code outside of the .NET Framework, in the form of a database client unless your application enlists in Microsoft Distributed Transaction Coordinator (MS DTC) coordinated transactions.
The Zen ADO.NET data providers enable you to connect to Zen database engines. They work with both 32- and 64-bit .NET and are supported on all Zen supported Windows platforms.
See also ADO.NET Data Providers Installed with Zen and ADO.NET Data Providers Available with SDK Download.