FK pointing to a VIEW

Do I understad correctly that i cannot point a Foreign Key to a view? Which
is the rationale of this?

TIA
sandro
*:-)



test=# alter table mail_inviate
test-#    add constraint mail_inviate_fk
test-#    FOREIGN KEY (mittente) REFERENCES mail_view(mail_address)
test-# ;
ERROR:  referenced relation "mail_view" is not a table

--
Sandro Dentella  *:-)
http://www.tksql.org                    TkSQL Home page - My GPL work