To support the release of a non-configurable read-only driver into production environments, the ODBC driver can optionally be installed as a read-only driver. This driver allows SQL statements such as SELECT, EXECUTE PROCEDURE, and ODBC CALL, but does not allow update statements (for example, INSERT, DELETE, UPDATE, CREATE, and so on).

Both ODBC drivers (read-only and read/update) are installed during the standard Ingres installation. Selection of the driver type is performed during configuration of an ODBC data source. For more information, see Configure a Data Source (Windows) and Configure a Data Source (UNIX and VMS).