CREATE TABLE calendarobjects (
      id integer primary key asc,
      calendardata blob,
      uri text,
      calendarid integer,
      lastmodified integer,
      etag text,
      size integer,
      componenttype text,
      firstoccurence integer,
      lastoccurence integer
  );
  
  CREATE TABLE calendars (
      id integer primary key asc,
      principaluri text,
      displayname text,
      uri text,
      ctag integer,
      description text,
      calendarorder integer,
      calendarcolor text,
      timezone text,
      components text,
      transparent bool
  );