Microsoft® ActiveX® Data Objects (ADO) enables your client applications to access PivotTable® Service through OLE DB. ADO supports key features for building client/server and Web-based applications.
ActiveX Data Objects (Multidimensional) (ADO MD) extends ADO to include objects specific to multidimensional data, and allows you to browse multidimensional schema, query a cube, and retrieve the results. ADO MD provides access to multidimensional data from languages such as Microsoft Visual Basic®, Microsoft Visual C++®, and Microsoft Visual J++™.
For more information, see the ADO documentation.