+ contact => {
+ class => 'SL::DB::Contact',
+ key_columns => { cp_id => 'cp_id' },
+ },
+
+ department => {
+ class => 'SL::DB::Department',
+ key_columns => { department_id => 'id' },
+ },
+
+ employee => {
+ class => 'SL::DB::Employee',
+ key_columns => { employee_id => 'id' },
+ },
+