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公开(公告)号:US07788285B2
公开(公告)日:2010-08-31
申请号:US10846120
申请日:2004-05-14
申请人: Kumar Rajamani , Susan Kotsovolos , Russell J. Green , Rajagopalan Govindarajan , Jaebock Lee , Ho Chak Hung , Guhan Viswanathan
发明人: Kumar Rajamani , Susan Kotsovolos , Russell J. Green , Rajagopalan Govindarajan , Jaebock Lee , Ho Chak Hung , Guhan Viswanathan
IPC分类号: G06F7/00
CPC分类号: G06F17/30286
摘要: A method and apparatus for updating databases are disclosed. An update vector for an object is created for identifying updated attributes. A dependent object is identified and a dependency vector of the dependent object is compared with update vector to determine whether the dependent object depends on the updated attributes.
摘要翻译: 公开了一种用于更新数据库的方法和装置。 创建用于标识更新的属性的对象的更新向量。 识别依赖对象,并将依赖对象的依赖向量与更新向量进行比较,以确定依赖对象是否依赖于更新的属性。
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公开(公告)号:US08005792B2
公开(公告)日:2011-08-23
申请号:US11129717
申请日:2005-05-13
申请人: Russell John Green , Subhransu Basu , Shrikanth Shankar , Kumar Rajamani , Ho Chak Hung , Jaebock Lee
发明人: Russell John Green , Subhransu Basu , Shrikanth Shankar , Kumar Rajamani , Ho Chak Hung , Jaebock Lee
IPC分类号: G06F7/00
CPC分类号: G06F17/30356
摘要: Versioned metadata allows multiple versions of metadata for a given object to exist concurrently on a system thereby supporting the parallel execution of operations which would otherwise be mutually exclusive. Metadata updates are permitted while other objects maintain access to another version of the metadata through a versioning infrastructure. The versioning infrastructure allows the creation of new versions of metadata, maintains obsolete versions in the system as long as they are being used by any object, and deletes the obsolete versions once they are no longer in use.
摘要翻译: 版本化元数据允许给定对象的多个版本的元数据同时存在于系统上,从而支持并行执行否则将是相互排斥的操作。 允许元数据更新,而其他对象通过版本控制基础架构可以访问其他版本的元数据。 版本控制基础架构允许创建新的元数据版本,只要系统使用它们,就可以在系统中维护过时的版本,并在不再使用过时的版本后删除它们。
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