Hello Holger,

Running the following code I can see no problems with the years:

use strict;
use warnings;
use DBI;

my $dbf_dir = '.';
my $dbh = DBI->connect("DBI:XBase:$dbf_dir") or die $DBI::errstr;

my $def = "CREATE TABLE t_year (cal_year INTEGER)";

unlink 't_year.dbf';
$dbh->do($def);

my $sth = $dbh->prepare('INSERT INTO t_year VALUES (?)');

while ( my $year = <DATA> ) {
    chomp $year;
    print "Inserting $year\n";
    $sth->execute($year) or die $sth->errstr();
}

my $sth2 = $dbh->prepare("select cal_year from t_year")
    or die $dbh->errstr();
$sth2->execute() or die $sth2->errstr();

while ( my @rec = $sth2->fetchrow_array() ) {
    print "Extracting @rec\n";
}

$dbh->disconnect();

__END__
1990
2000
2010
[download]

My output is as expected:

Inserting 1990
Inserting 2000
Inserting 2010
Extracting 1990
Extracting 2000
Extracting 2010
[download]

What is the structure of your table?

Regards, Stefan