The view pg_config describes the compile-time configuration parameters of the currently installed version of PostgreSQL

The catalog pg_aggregate stores information about aggregate functions. An aggregate function is a function that operates on a set of values

The catalog pg_largeobject holds the data making up "large objects". A large object is identified by an OID assigned

The catalog pg_range stores information about range types. This is in addition to the types' entries in

The catalog pg_operator stores information about operators. See CREATE

The view pg_settings provides access to run-time parameters of the server. It is essentially an alternative interface to the

The pg_prepared_statements view displays all the prepared statements that are available in the current session. See

The pg_available_extensions view lists the extensions that are available for installation. See also the

The catalog pg_amop stores information about operators associated with access method operator families. There is one row for each operator that

The catalog pg_pltemplate stores "template" information for procedural languages. A template for a language allows