text: CREATE TABLE `post` (
    `id` int(11) NOT NULL AUTO_INCREMENT,
    `type` int(11) NOT NULL,
    `company_name` varchar(255) NOT NULL,
    `position` varchar(255) NOT NULL,
    PRIMARY KEY (id)
  );
  
  CREATE TABLE `descriptive_post` (
    `id` int(11) NOT NULL AUTO_INCREMENT,
    `post_id` int(11) NOT NULL,  
    `position_description` varchar(255) NOT NULL,
    `salary` int(11) NOT NULL,
    `start_at` int(11) NOT NULL,
    `end_at` int(11) NOT NULL,
    PRIMARY KEY (id)
  );
  
  CREATE TABLE `contact_post` (
    `id` int(11) NOT NULL AUTO_INCREMENT,
    `post_id` int(11) NOT NULL,  
    `contact_name` varchar(255) NOT NULL,  
    `contact_email` varchar(255) NOT NULL,
    PRIMARY KEY (id)
  );
  
  CREATE TABLE `post_in_queue` (
    `id` int(11) NOT NULL AUTO_INCREMENT,
    `post_id` int(11) NOT NULL,  
    `place_at` int(11) NOT NULL,  
    `notification_email_at` int(11) NOT NULL,
    PRIMARY KEY (id)
  );