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公开(公告)号:US07580941B2
公开(公告)日:2009-08-25
申请号:US11423924
申请日:2006-06-13
IPC分类号: G06F17/30
CPC分类号: G06F17/30306 , Y10S707/99942
摘要: The subject disclosure pertains to logical schema tuning for databases. Mechanisms are provided for automatically recommending one or more logical schema transformations to improve database performance with respect to workload and data characteristics. Furthermore, several potential schema transformations including desirable properties are presented including mapping tables, vertical partitioning, frequent value elimination and type and attribute conversion. Still further yet, disclosed is a mechanism for rewriting database operations (e.g. queries, updates . . . ) for an optimized schema to ensure correct evaluation.
摘要翻译: 主题公开涉及数据库的逻辑模式调整。 提供了用于自动推荐一个或多个逻辑模式转换以提高关于工作负载和数据特性的数据库性能的机制。 此外,提出了包括所需属性的几种潜在的模式转换,包括映射表,垂直分区,频繁值消除以及类型和属性转换。 更进一步地,公开了一种用于重写用于优化模式的数据库操作(例如,查询,更新...)以确保正确评估的机制。