Title:
DATABASE APPARATUS AND DATA ACCESS METHOD
Document Type and Number:
Japanese Patent JP2015230689
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a database apparatus negating the need of acquisition of exclusive lock at the time of writing of data while guaranteeing consistency among the data.SOLUTION: A database apparatus is constituted of a storage device and a plurality of nodes. The storage device manages version numbers indicating a writing order of data. The plurality of nodes acquires a most up-to-date version number while acquiring writing shared lock prohibiting reading of the data by the other node only, stores writing data together with the most up-to-date version number in a memory, stores a node number of its own node and the most up-to-date version number acquired as information related to the writing data in the storage device and releases the writing shared lock at the time of writing of the data into the storage device.
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Inventors:
SATO YOSHIEI
TAKAHASHI KENJI
KANEMATSU MOTOTAKA
TAKAHASHI KENJI
KANEMATSU MOTOTAKA
Application Number:
JP2014117844A
Publication Date:
December 21, 2015
Filing Date:
June 06, 2014
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
G06F12/00
Domestic Patent References:
| JP2005506598A | 2005-03-03 | |||
| JP2012155498A | 2012-08-16 | |||
| JPH0816444A | 1996-01-19 | |||
| JPH1091510A | 1998-04-10 | |||
| JP2006277634A | 2006-10-12 | |||
| JP2009526324A | 2009-07-16 |
Attorney, Agent or Firm:
Suzue International Patent Office