A key innovation in OLEDB drivers is support for and multiple result sets , enabling complex operations that ODBC handled clumsily. Moreover, OLEDB introduced the concept of indexes and bookmarks on rowsets, allowing fast, random access to rows without re-querying.
When connecting to Microsoft SQL Server, OLE DB (specifically the Microsoft OLE DB Driver for SQL Server - MSOLEDBSQL ) generally outperforms ODBC. It is the "native" interface. It supports features like MARS (Multiple Active Result Sets) and better memory management for bulk operations. If you are writing a high-throughput C++ application hitting SQL Server, OLE DB is still the king of speed. oledb drivers
Primarily designed for relational (SQL-based) databases. A key innovation in OLEDB drivers is support
OLE DB drivers can actually use ODBC drivers to access relational data, adding a layer of flexibility. Common OLE DB Providers It is the "native" interface