Sou novo no PostgreSQL e estou tendo um problema com o que percebo ser um comando simplesDROP DATABASE eDROPDB. Por que os seguintes comandos não excluiriam meu banco de dados?

postgres=# drop database clientms
postgres-# \l
                                    List of databases
   Name    |    Owner     | Encoding |   Collate   |    Ctype    |   Access privileges   
-----------+--------------+----------+-------------+-------------+-----------------------
 clientms  | clientmsuser | UTF8     | en_GB.UTF-8 | en_GB.UTF-8 | 
 postgres  | postgres     | UTF8     | en_GB.UTF-8 | en_GB.UTF-8 | 
 template0 | postgres     | UTF8     | en_GB.UTF-8 | en_GB.UTF-8 | =c/postgres          +
           |              |          |             |             | postgres=CTc/postgres
 template1 | postgres     | UTF8     | en_GB.UTF-8 | en_GB.UTF-8 | =c/postgres          +
           |              |          |             |             | postgres=CTc/postgres
(4 rows)

postgres-# dropdb clientms
postgres-# \l
                                    List of databases
   Name    |    Owner     | Encoding |   Collate   |    Ctype    |   Access privileges   
-----------+--------------+----------+-------------+-------------+-----------------------
 clientms  | clientmsuser | UTF8     | en_GB.UTF-8 | en_GB.UTF-8 | 
 postgres  | postgres     | UTF8     | en_GB.UTF-8 | en_GB.UTF-8 | 
 template0 | postgres     | UTF8     | en_GB.UTF-8 | en_GB.UTF-8 | =c/postgres          +
           |              |          |             |             | postgres=CTc/postgres
 template1 | postgres     | UTF8     | en_GB.UTF-8 | en_GB.UTF-8 | =c/postgres          +
           |              |          |             |             | postgres=CTc/postgres
(4 rows)