text: CREATE TABLE IF NOT EXISTS country (
      id integer primary key autoincrement,
      code text,
      phone_code integer,
      name text
  );
  
  CREATE TABLE IF NOT EXISTS phone (
      id integer primary key autoincrement,
      phone_number text not null unique,
      is_active integer not null default 1,
      country_id integer,
      foreign key (country_id) references country (id)
  );
  
  CREATE TABLE IF NOT EXISTS message (
      id integer primary key autoincrement,
      phone_id integer not null,
      date datetime,
      special_id integer,
      message_text text,
      foreign key (phone_id) references phone (id)
  );
  