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1. 发明申请

US20090276473A1 METHOD AND APPARATUS FOR MAINTAINING CONSISTENCY BETWEEN DATABASE AND VIRTUAL TABLE 审中-公开
标题翻译：用于维护数据库和虚拟表之间一致性的方法和装置
公开(公告)号：US20090276473A1
公开(公告)日：2009-11-05
申请号：US12432032
申请日：2009-04-29
申请人： Mari Fukuda , Teruo Koyanagi , Hiroyasu Ohsaki , Yohsuke ozawa
发明人： Mari Fukuda , Teruo Koyanagi , Hiroyasu Ohsaki , Yohsuke ozawa
IPC分类号： G06F17/30
CPC分类号： G06F16/2393
摘要： A method and system for maintaining consistency between a view of a virtual table and the database. The method includes: First, selecting a discard candidate instance from a discard candidate list table in accordance with an LRU algorithm if it is judged that there is less free space for adding an instance. Then, judging whether a revision wait flag is on for the discard candidate instance. If it is judged that the revision wait flag is on, deleting the discard candidate instance from the discard candidate list table. If it is judged that the revision wait flag is not on, deleting the discard candidate instance from the instance pool and adding the instance to the instance pool. Lastly, adding the requested instance to the instance pool if it is judged that there is enough storage area.
摘要翻译：一种用于维护虚拟表视图和数据库之间的一致性的方法和系统。该方法包括：首先，如果判断有较少的可用空间用于添加实例，则根据LRU算法从丢弃候选列表表中选择丢弃候选实例。然后，判断丢弃候选实例是否打开修订等待标志。如果判断出修订等待标志已经开启，则从丢弃候选列表表中删除丢弃候选实例。如果判断出修订等待标志不亮，则从实例池中删除丢弃候选实例，并将实例添加到实例池。最后，如果判断存在足够的存储区域，则将所请求的实例添加到实例池。

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