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  1. or download this
    my $dbh = DBI->connect( " yada yada " ), { PrintError => 0},
          or die "cannot open db connection:  $DBI::errstr\n";
    
  2. or download this
      eval {
          my $dbh = DBI->connect( " yada yada " ), { PrintError => 0},
          or die "cannot open db connection:  $DBI::errstr\n";
      }
      return $dbh;
    
  3. or download this
    sub db_connection {
    
        my ( $self ) = @_;
        my $dbh;