A data warehouse is generated by incorporating data warehouse information in business objects to provide subscribed business objects and generating star-schema tables of the data warehouse from the subscribed business objects. During compression the housing jacket is knocked at a frequency between 20 and 80 Hz to cause setting of the intumescent mat between the core and the jacket. Accordingly, since there is no increase of voltage attributed to a body effect, a speed is not reduced. The apparatus may also feature a redisplay capability permitting redisplay of the user-drawn marks on the reusable panel based on the digital information. In an aspect, several methods can be employed to reduce the computational complexity of the general integer programming problem presented. The transmission parts have an opening width that is equal to or greater than an opening width of the pixels in a direction in which the transmission parts and the light shielding parts are arrayed alternately.