53.65. pg_user_mapping
  The catalog
  
   pg_user_mapping
  
  stores
   the mappings from local user to remote.  Access to this catalog is
   restricted from normal users, use the view
  
   
    pg_user_mappings
   
  
  instead.
 
   
    Table 53.66. 
    
     pg_user_mapping
    
    Columns
   
  
| 
        Column Type Description  | 
     
|---|
| 
        
         Row identifier  | 
     
| 
        
         OID of the local role being mapped, or zero if the user mapping is public  | 
     
| 
        
         The OID of the foreign server that contains this mapping  | 
     
| 
        
         User mapping specific options, as " keyword=value " strings  |