Data processing: database and file management or data structures – File or database maintenance – Database recovery
Reexamination Certificate
2006-05-02
2010-12-14
Wu, Yicun (Department: 2169)
Data processing: database and file management or data structures
File or database maintenance
Database recovery
C707S675000, C707S676000, C707S677000, C707S678000, C707S679000, C707S680000, C707S681000, C707S682000, C707S683000, C707S684000, C707S685000, C707S686000, C707S687000
Reexamination Certificate
active
07853570
ABSTRACT:
A database processing system including a plurality of partitioned databases. Data processing is performed with pieces of information processing apparatus associated with each of the partitioned databases respectively. In response to a query, a status table indicating availability of each information processing apparatus is read from the storage. Of the pieces of information processing apparatus for processing the received query, at least a serviceable one is determined as a process request destination. A process request corresponding to the query is transmitted to the information processing apparatus determined as the process request destination. The process request is received through a communication unit, and data on the database are consequently processed. A processing result is transmitted to a transmitting source through the communication unit.
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David J. Dewitt, Jim Gray, “Parallel Database Systems: The Future of High Performance Database Systems”, Communications of the ACM, vol. 36, No. 6, 1992, pp. 85-92.
Hara Norihiro
Hoshino Ryuichi
Suzuki Tetsuya
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Wu Yicun
Zhao Yu
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