Pioneering Studies Related to Evolution of Novel Database System Paradigms

The international conference on deductive and object-oriented databases

Fig.1 The international conference on deductive and object-oriented databases

Association analysis by data mining between abnormal phenomenon and severe earthquakes

Fig.2 Association analysis by data mining between abnormal phenomenon and severe earthquakes

Method for reducing waiting time for data broadcasting environments

Fig.3 Method for reducing waiting time for data broadcasting environments

    Recent remarkable increases in speed and significant drop in prices have made the construction of large-scale databases easy. Also, new contents services have arisen due to the development of the Internet and WWW (World Wide Web) technologies. In the midst of such developments, the importance of research and development of database systems, which serve as an infrastructure for an advanced information society, increases more than ever before.

    Since the early 1980s, Shojiro Nishio has consistently realized remarkable research achievements concerning paradigm shifts in important database system technologies. Furthermore, these creative achievements are grounded in real systems.

    Of these technologies, he is considered a founding father of deductive and object-oriented databases (DOOD), having made pioneering research achievements along with significant contributions to establishing international conferences in this field. DOOD is regarded as one of the most sophisticated database models, and was developed for commercial use through grants from the European Community. The technology is notable in that Japanese researchers significantly contributed to the essential challenge of constructing the database model.

    Besides the above accomplishments, he has carried out many prominent research studies that have cast doubt on accepted ideas. Two noteworthy examples are given below.

    Recently, as construction of large-scale databases becomes widespread, research on data mining has attracted heavy attention. He promptly recognized its importance and actively contributed to its enlightenment activities in Japan. At the same time, he performed groundbreaking research on applying data mining techniques to deductive databases and object-oriented databases. The findings were published in IEEE journals and received worldwide acclaim. He also made a database of abnormal phenomena in the natural world, gathered just before the Great Hanshin Earthquake. The findings of the association between abnormal phenomena and severe earthquakes were reported in the press.

    Next, in the midst of the rapid expansion of ultra high-speed Internet, he strongly promoted collaborative research and development in the area of “database migration,’’ a new transaction technique that takes full advantage of this bandwidth and is based on novel concepts completely different from conventional ideas.

    Also, as forays into new environments for using databases, he has been developing collaborative research projects on database construction technologies for “mobile computing environment” and “data broadcasting environment.” These research projects discerned the importance of creating new system architectures suited to the new environments for using databases brought about by the rapid innovations in information technology. Research findings were published by this academic society, in IEEE Transactions, and presented at major international conferences such as the Very Large Data Bases (VLDB) Conference, and have received worldwide acclaim.

        For his work in this technology, the Institute of Electronics, Information and Communication Engineers (IEICE) presented an Achievement Award to Shojiro Nishio in 2002.


[1] Jiawei Han, Shojiro Nishio, Hiroyuki Kawano, and Wei Wang、Generalization-based Data Mining in Object-Oriented Databases Using an Object Cube Model、1998、Data & Knowledge Engineering, Vol. 25, No. 1-2, pp. 55-97
[2] Takahiro Hara, Kaname Harumoto, Masahiko Tsukamoto, and Shojiro Nishio、Database Migration: A New Architecture for Transaction Processing in Broadband Networks、1998、IEEE Transactions on Knowledge and Data Engineering, Vol. 10, No. 5, pp. 839-854
[3] Tomoki Yoshihisa, Masahiko Tsukamoto, and Shojiro Nishio、A Scheduling Scheme for Continuous Media Data Broadcasting with a Single Channel、2006、IEEE Transactions on Broadcasting, Vol. 52, No. 1, pp. 1-10

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