20.9 PostgreSQL Basic Meta Commands

$ psql -d iris    # Connect to PostgreSQL with specific database.
kayon=# \l        # List databases.
kayon=# \c iris   # Connect to (use) the specified database.
kayon=# \dt       # List relations (tables).
kayon=# \dt+      # List relations (tables) and sizes.
kayon=# \q        # Quit.

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