Postgresql – How to change owner of PostgreSql database

Try this (in the psql command-line tool):

\d+ tablename

See the manual for more info.

From the psql command line interface,

First, choose your database

\c database_name

Then, this shows all tables in the current schema:

\dt

Programmatically (or from the psql interface too, of course):

SELECT * FROM pg_catalog.pg_tables;

The system tables live in the pg_catalog database.