Driver =link= - Ole Db

The first generation was the Microsoft OLE DB Provider for SQL Server , which is now legacy and no longer maintained.

| Application Type | Works? | Notes | |----------------|--------|-------| | VB6 / ADO | ✅ Yes | Set DataTypeCompatibility=80 if you encounter binding errors. | | VC++ (ATL/ODBCTemplates) | ✅ Yes | Best performance. | | SSIS 2016+ | ✅ Yes | Requires 2016+ or Azure Data Factory. | | MS Access 365 (linked tables) | ⚠️ Partial | Some form controls may freeze; use with OLEDB_Services=-2. | | PowerShell (System.Data.OleDb) | ❌ No | .NET OleDb bridges to COM but fails with MARS. Use SqlClient instead. | ole db driver

Supports modern features like Snapshot Isolation , Multiple Active Result Sets (MARS) , Azure Active Directory authentication , and UTF-8 encoding . The first generation was the Microsoft OLE DB

Note: Integrated Security=SSPI does not work with Azure AD; use Authentication=ActiveDirectoryIntegrated . | | VC++ (ATL/ODBCTemplates) | ✅ Yes | Best performance

It provides native, high-speed access to the SQL Server Tabular Data Stream (TDS) protocol.

Dim rs As New ADODB.Recordset rs.Open "SELECT TOP 10 * FROM Orders", conn, adOpenForwardOnly, adLockReadOnly

An (Object Linking and Embedding, Database) is a critical software component that allows applications to connect to and interact with various data sources, ranging from relational databases like SQL Server to non-relational data such as spreadsheets or email systems.