ALTER TABLE `judges_schedulerconfig` ADD `conferences_id` INT NOT NULL;
ALTER TABLE `judges_teams` ADD `conferences_id` INT NOT NULL;
ALTER TABLE `judges_teams_awards_link` ADD `conferences_id` INT NOT NULL;
ALTER TABLE `judges_teams_link` ADD `conferences_id` INT NOT NULL;
ALTER TABLE `judges_teams_timeslots_link` ADD `conferences_id` INT NOT NULL;
ALTER TABLE `judges_teams_timeslots_projects_link` ADD `conferences_id` INT NOT NULL;
ALTER TABLE `judges_timeslots` ADD `conferences_id` INT NOT NULL;