High economic growth in Japan enlarged tourism demand rapidly. To deal with the demand, transportation industries such as railways and airlines introduced computerized reservation systems. The computerization in the transportation industries promoted computerization of travel agents selling tickets for transportation companies. In this study, the author classified the computerizing processes of major travel agents and their related industries by four terms which are 'Domestic Integration', 'Inter-industrial Integration', 'Integration in the Trade', and 'Global Integration', and clarified the characteristics of each term.
