The research on the impact of information technology : On e-mail use

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The theme of our research is "the impact of information technology (in particular e-mail and jointed databases in a firm) on the decision making of a firm". We have studied the influence on the communication, the decision making, the hierarchy, the organization, the behavior, or the performance by their introduction and use of them. As a result of our research, several conclusions were obtained :1) The way of communication and information sharing in a firm may change substanitally.2) The organization in a firm and between firms may be innovated one of whose effects has reduced the hierarchy of a firm.3) Many firms appreciate the effect positively, but a few, which cannot cope with the information technology, evaluate it negatively.4) The way of the integration of e-mail and the other information systems may become important.5) With the prevail of e-mail, employees seem to rely on the communication by e-mail instead of face to face, which may influence the relationship and the organization.6) New rules on how to use e-mail may be necessary and it will solve the problems of privacy and security.The sujbet is remained to be solved, which is to do a research the impact from a more general and integrated point of view (including e-business, supply-chain, ERP etc).