The OLEDB connector allows you to execute direct queries against any OLEDB data source installed on the PC.
Each of the tasks require a connection to an OLEDB data source, for more information on setting up and managing connections see the page Connecting to an OLEDB Database.
Knowledge of SQL is required to use the tasks in this connector. You can find tutorials on SQL at W3 Schools.
Articles and Sample Files
There is a workflow template and example available at the link below: