It is out of scope to document the full functionality of Postgres to add information about Postgres. Table information is given in the following terminal dump.

#su postgres
#psql dcache
Welcome to psql 7.3.8-RH, the PostgreSQL interactive terminal.

Type:  \copyright for distribution terms
       \h for help with SQL commands
       \? for help on internal slash commands
       \g or terminate with semicolon to execute query
       \q to quit

dcache=# \dt
                  List of relations
 Schema |          Name           | Type  |   Owner   
--------+-------------------------+-------+-----------
 public | copyfilerequests        | table | srmdcache
 public | copyfilerequests_b      | table | srmdcache
 public | copyrequests            | table | srmdcache
 public | copyrequests_b          | table | srmdcache
 public | getfilerequests         | table | srmdcache
 public | getfilerequests_b       | table | srmdcache
 public | getrequests             | table | srmdcache
 public | getrequests_b           | table | srmdcache
 public | getrequests_protocols   | table | srmdcache
 public | getrequests_protocols_b | table | srmdcache
 public | pinrequests             | table | srmdcache
 public | pins                    | table | srmdcache
 public | putfilerequests         | table | srmdcache
 public | putfilerequests_b       | table | srmdcache
 public | putrequests             | table | srmdcache
 public | putrequests_b           | table | srmdcache
 public | putrequests_protocols   | table | srmdcache
 public | putrequests_protocols_b | table | srmdcache
 public | srmnextrequestid        | table | srmdcache
 public | srmrequestcredentials   | table | srmdcache
(20 rows)

dcache=#