spec_driver_constructor

## Construction of the DBIDriver object

The backend must support creation of an instance of its DBIDriver subclass with a constructor function. By default, its name is the package name without the leading ‘R’ (if it exists), e.g., SQLite for the RSQLite package. However, backend authors may choose a different name. The constructor must be exported, and it must be a function that is callable without arguments. DBI recommends to define a constructor with an empty argument list.

Other driver specifications: spec_driver_connect, spec_driver_data_type, spec_get_info