[ADMIN] Crypt and DELETE.

[Postgres]

Hy all,

I'm using the delete command with "PQexec" to remove some records from
my database. But there is a problem, how can I know if the record was
really removed if the values returned in "PQresultStatus" are the same
when no records and one record are removed. Should I use a special 
function to make queries like INSERT, DELETE or UPDATE ?

   I have another doubt about "crypt", I need crypt and descrypt some data
but I don't know the sintax of the command, could someone help me?

                Tanks a lot,
                                        Rodrigo.