A cursor indicates the current record position in a result set. Most types of cursors contain a representation of the data in the data source, and are not updatable. Keysets are cursors that contain actual data, and are updatable.
You work with a cursor through the DAO Recordset object. When you open a Recordset object through DAO, ODBCDirect creates the corresponding cursor. Each type of Recordset object, except for the table-type Recordset object, corresponds to a different type of cursor.