| 摘要 |
PROBLEM TO BE SOLVED: To realize a satisfactory throughput of a system by realizing the independency of a transaction without using a transaction lock in an index access. SOLUTION: This system comprises a transaction local log buffer 40 for storing, according to an access request from an application 12, updated data laid in an unspecified state for every transaction, and a system global log buffer 38 for storing an index corresponding to the data stored in the transaction local log buffer 40. An update log generation part 28 stores updated data after a processing according to the access request from the application 12 in the buffer 40, and stores the index corresponding to these data with an unspecified flag set thereto in the buffer 38. COPYRIGHT: (C)2005,JPO&NCIPI
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