发明名称 |
Duplicating database contents |
摘要 |
The invention provides data processing, data control and information methods and systems for efficiently duplicating contents of a database in the data control system. An example of a data processing system includes: a cache unit acquiring, from a data control system which categorizes a plurality of data elements into a plurality of clusters and stores the plurality of clusters; a group-of-clusters update information acquisition unit for acquiring from the data control system group-of-clusters update information with respect to a group of clusters consisting of two or more clusters; a group-of-clusters update information computation unit for computing group-of-clusters update information with respect to the group of clusters based on two or more pieces of cluster update information; and an update judging unit for judging that a cached data element belonging to the group of clusters is the most updated one.
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申请公布号 |
US2006143213(A1) |
申请公布日期 |
2006.06.29 |
申请号 |
US20050319854 |
申请日期 |
2005.12.28 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
WATANABE YUJI;YOSHIZAWA TAKEO;NUMAO MASAYUKI |
分类号 |
G06F17/00;G06F7/00 |
主分类号 |
G06F17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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