"kenneth d'souza" <kd_souza@hotmail.com> writes:
> Is there any reason why the function must have got renamed from
> HeapTupleSatisfiesSnapshot to HeapTupleSatisfiesMVCC.
The old name was misleading, because all those functions work with
"snapshots" in the sense of "values of type Snapshot". See
http://archives.postgresql.org/pgsql-committers/2007-03/msg00316.php
regards, tom lane