CREATE TABLE calendar (
      id            integer NOT NULL PRIMARY KEY AUTOINCREMENT,
      title         varchar(300) NOT NULL,
      description   text,
      start_date    date NOT NULL,
      start_time    time,
      end_date      date,
      end_time      time,
      recurrence    varchar(1),
      period        varchar(1),
      category		integer,
      id_api            varchar(255),
      id_event_google            varchar(255),
      recur_info        varchar(255),
      event_color		varchar(255),
      creator varchar(255),
      reminder varchar(255)
    )
