$dbh = DBI->connect("dbi:Pg:dbname=$dbname;host=$host;port=$port;options=$options",
	$username,
	$password,
	{AutoCommit => 0, RaiseError => 1, PrintError => 0}
	);   );

##</code><code>##

my$dbh = DBI->connect("DBI:Pg:dbname=five;port=5432", 
'postgres',
'',
{ RaiseError => 1, AutoCommit => 0 }) or die "kon de database niet openen!";