pg_default_acl
   The catalog pg_default_acl stores initial
   privileges to be assigned to newly created objects.
  
Table 52.17. pg_default_acl Columns
| Column Type Description | 
|---|
| 
        Row identifier | 
| 
        The OID of the role associated with this entry | 
| 
        The OID of the namespace associated with this entry, or zero if none | 
| 
        
       Type of object this entry is for:
        | 
| 
        Access privileges that this type of object should have on creation | 
   A pg_default_acl entry shows the initial privileges to
   be assigned to an object belonging to the indicated user.  There are
   currently two types of entry: “global” entries with
   defaclnamespace = zero, and “per-schema” entries
   that reference a particular schema.  If a global entry is present then
   it overrides the normal hard-wired default privileges
   for the object type.  A per-schema entry, if present, represents privileges
   to be added to the global or hard-wired default privileges.
  
   Note that when an ACL entry in another catalog is null, it is taken
   to represent the hard-wired default privileges for its object,
   not whatever might be in pg_default_acl
   at the moment.  pg_default_acl is only consulted during
   object creation.