odbc| Connection Database | The difference is notable for the compatibility of OLE DB with ODBC, which allows OLE DB to access existing ODBC data sources. The advantages are obvious because ODBC is more commonly used relative to OLE DB, so you can get more ODBC drivers than OLE DB. This does not necessarily mean that the driver for the OLE DB can be accessed without immediate access to the original data system.
The provider is located at the OLE DB layer, and the driver is at the ODBC layer. If you want to use an ODBC data source, you need to use an OLE DB Provider for ODBC, and it will then use the appropriate ODBC driver. If you do not need to use an ODBC data source, you can use the appropriate OLE DB providers, which are often referred to as local providers (native provider).
It is clear that using an ODBC provider means that an additional layer is required. Therefore, when accessing the same data, the OLE DB Provider for ODBC may be slower than the local OLE DB provider.