Indicates whether to save the database user name in the connection configuration.
Indicates whether to save the database password in the connection settings. Passwords are saved in clear text in the system configuration and in the project files!
Indicates that only "listed" geometry columns should be used - opposed to scanning all tables for geometry columns.
Indicates that only tables in the 'public' schema should be considers - opposed to all accessible tables.
Indicates that tables without geometry should also be listed by default.
When initializing layers, various queries may be needed to establish the characteristics of the geometries stored in the database table. When this option is checked, these queries examine only a sample of the rows and use the table statistics, rather than the entire table. This can drastically speed up operations on large datasets, but may result in incorrect characterization of layers (eg. the feature count of filtered layers will not be accurately determined).