pg_tablespace #
   The catalog pg_tablespace stores information
   about the available tablespaces.  Tables can be placed in particular
   tablespaces to aid administration of disk layout.
  
   Unlike most system catalogs, pg_tablespace
   is shared across all databases of a cluster: there is only one
   copy of pg_tablespace per cluster, not
   one per database.
  
Table 51.56. pg_tablespace Columns
Column Type Description  | 
|---|
        Row identifier  | 
        Tablespace name  | 
        Owner of the tablespace, usually the user who created it  | 
        Access privileges; see Section 5.8 for details  | 
        Tablespace-level options, as “keyword=value” strings  |