[ADMIN] what is a serial_fkey data type?

[CS DBA]

I'm seeing a number of serial_fkey data types in one of our databases 
(postgresql 8.4) but I dont find this data type in the docs.  Where does 
this come from?

Thanks in advance

--



--
Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-admin