Before you can initiate a connection, you must usually specify options
that tell the database driver what to connect to. This driver supports
the standard options of
username, password and
dbname. The latter parameter is in Ingres syntax,
[node_id::]dbname[/svr_class] -
see Ingres documentation for details.
(When running as the Ingres admin user on the same host as the DBMS,
only the dbname is normally required.)
Sensible defaults will be used for all unspecified options.
This driver also offers the following non-standard options, and/or redefines the meaning of the following standard options:
Set this option to string value "0" to disable Ingres autocommit mode for the connection (it is enabled by default).