52.63. 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 52.64. 
    
     pg_user_mapping
    
    Columns
   
  
| Name | Type | References | Description | 
|---|---|---|---|
       
        oid
       
       | 
      
       
        oid
       
       | 
      Row identifier (hidden attribute; must be explicitly selected) | |
       
        umuser
       
       | 
      
       
        oid
       
       | 
      
       
        
         
       | 
      OID of the local role being mapped, 0 if the user mapping is public | 
       
        umserver
       
       | 
      
       
        oid
       
       | 
      
       
        
         
       | 
      The OID of the foreign server that contains this mapping | 
       
        umoptions
       
       | 
      
       
        text[]
       
       | 
      User mapping specific options, as " keyword=value " strings |