PERL连接INFORMIX数据库?

PERL连接INFORMIX数据库?

#!/usr/local/bin/perl -w

use strict;
use DBI;

my $name="ad";
my $password="ad";
my $connect_str="dbi:informix:unicom\@hbdb";
my $dbh=DBI->connect($connect_str,$name,$password);
if(!defined $dbh){
  die "Cannot do \$dbh->connect: $DBI::errstr\n";
}
else{
print "Successfully\n";
}
请高手帮忙看一下,是哪里出错了,先谢了!!!
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错误信息?
perl select_dal.pl
install_driver(informix) failed: Can't locate DBD/informix.pm in @INC (@INC contains: /usr/local/lib/perl5/5.8.4/sun4-solaris /usr/local/lib/perl5/5.8.4 /usr/local/lib/perl5 /usr/local/lib/perl5/5.8.4/sun4-solaris /usr/local/lib/perl5/5.8.4 /usr/local/lib/perl5/site_perl/5.8.4/sun4-solaris /usr/local/lib/perl5/site_perl/5.8.4 /usr/local/lib/perl5/site_perl .) at (eval 1) line 3.
Perhaps the DBD::informix perl module hasn't been fully installed,
or perhaps the capitalisation of 'informix' isn't right.
Available drivers: ExampleP, Informix, Proxy.
at select_dal.pl line 19
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你的perl缺包:安装DBD::Infomrix包
有模块没装