Failed dependencies: perl(Pg) is needed by postgresql-contrib

On a Redhat 8.0 box, I was just trying to install
a full set of the 7.3.2 rpms, but I'm having problems
with this one:

   rpm -ihv postgresql-contrib-7.3.2-1PGDG.i386.rpm
   error: Failed dependencies:
       perl(Pg) is needed by postgresql-contrib-7.3.2-1PGDG

What does that mean?  Is "perl(Pg)" supposed to be a file
from a package, or the name of a package?

Now this much I have:

   rpm -qa | egrep perl | egrep Pg
   perl-DBD-Pg-1.13-5

Is it talking about perl itself?  I've got the redhat
package installed:

   perl-5.8.0-55

(As well as another version of perl 5.8.0 I built myself:
/usr/local/bin/perl.)