Thanks for suggestion, but unfortunately I tried but it does not seem to work for me :-( I am posting my code, so that people can get a closer look. :-)

Page.pm

package DBI::Page;
use base 'DBI::Sec_scheduler';

__PACKAGE__->table('page');
__PACKAGE__->columns(All => (
        "page_id",
        "page_title",
        )
);

__PACKAGE__->has_many(cols => 'DBI::Column');

1;
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package DBI::Page_column;
use base 'DBI::Sec_scheduler';

__PACKAGE__->table('page_column');
__PACKAGE__->columns(All => (
        "page_id",
        "column_id",
        )
);

__PACKAGE__->has_a(page_id => 'DBI::Page');
__PACKAGE__->has_a(column_id => 'DBI::Column');

1;
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package DBI::Column;
use base 'DBI::Sec_scheduler';

__PACKAGE__->table('column');
__PACKAGE__->columns(All => (
        "column_id",
        "column_title",
        )
);

__PACKAGE__->has_many(pages => 'DBI::Page');


1;
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#!/usr/bin/perl
use strict; use warnings;

use Data::Dumper;
use lib '/home/rohan/work/sec_scheduler/modules';
use sec_scheduler;

my $p = DBI::Page->retrieve(page_id => 1);
print Dumper($p->cols);
[download]

After I run test.pl, I get the foll. error:

Use of 'croak' is deprecated at /usr/lib/perl5/site_perl/5.8.0/Class/DBI.pm line 950. Use '_croak' instead is not a column of DBI::Column at ./test.pl line 9
--
arc_of_descent