SQL Server Native Client 11.0 OLE DB Provider
This OLE DB Provider is provided by Microsoft.
The provider is contained in the file sqlncli11.dll.
Include "Provider=SQLNCLI11" in the connection string to use this provider.
SQL Server Native Client version 11 was released with SQL Server 2012.
The SQL Server Native Client OLE DB provider is a low-level COM API that is used for accessing data. The SQL Server Native Client OLE DB provider is recommended for developing tools, utilities, or low-level components that need high performance. The SQL Server Native Client OLE DB provider is a native, high performance provider that accesses the SQL Server Tabular Data Stream (TDS) protocol directly.
Read more about when to use this provider in the article "When to use the SQL Native Client" in the artices section.
SQL Server Native Client 11.0 provides OLE DB support to applications connecting to SQL Server versions 2005, 2008, 2008R2, 2012.
The SQL Server Native Client OLE DB provider is an OLE DB version 2.0–compliant provider.
More info about this provider can be found at the Microsoft product page.
OLE DB Provider (SQL Server Native Client 11.0 OLE DB Provider) can be downloaded here.