| 摘要 |
PROBLEM TO BE SOLVED: To provide a database management device, a distributed database management system, a distributed database management method, and a distributed database management program by which a data registration processing and a data retrieval processing can perform at high speed. SOLUTION: The database management devices 2 is database devices which combine horizontal and vertical distributions to distributedly arrange data, and each database management device 2 includes; a hash function operation part 15e for returning a hash value resulting from combining an ID of a database management device where data specified by a key value and a column name is stored or should be stored, and a fractional record ID being a part of data, in response to input of the key value and the column name designating the data; and a distribution function operation part 15f which returns one or more database management device IDs where data designated by a column name is stored, in response to input of the column name. COPYRIGHT: (C)2007,JPO&INPIT
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