SQL Server Native Client (OLE DB) Interfaces
Applies to: 
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Azure Synapse Analytics
Analytics Platform System (PDW)
Important
The SQL Server Native Client (often abbreviated SNAC) has been removed from SQL Server 2022 (16.x) and SQL Server Management Studio 19 (SSMS). Both the SQL Server Native Client OLE DB provider (SQLNCLI or SQLNCLI11) and the legacy Microsoft OLE DB Provider for SQL Server (SQLOLEDB) are not recommended for new development. Switch to the new Microsoft OLE DB Driver (MSOLEDBSQL) for SQL Server going forward.
The SQL Server Native Client OLE DB provider exposes interfaces to consumers wanting access to data on one or more computers running SQL Server. The SQL Server Native Client OLE DB provider is an OLE DB version 2.0-compliant provider.
This SQL Server Native Client OLE DB provider programming reference does not document all of the OLE DB interfaces and methods, only those interfaces and methods that exhibit provider-specific behavior when using the SQL Server Native Client OLE DB provider.
For a full description of the core OLE DB interfaces and methods, see the OLE DB Programmer's Reference.