=?iso-8859-1?Q?valcauda_St=E9phane?= <valcauda.aderis@wanadoo.fr> writes:
> In other database like ORACLE or PROGRESS you've got an internal identifier
> ROWID or RECID
> (bookmark with access) which allow you to select a row very quickly or to go
> back to a specific row very quickly.
> these functions uses an internal ID.
CTID allows direct access to a row --- but it's invalidated by an
update, so it might not be very useful for you.
regards, tom lane