公开(公告)号：US20090077088A1

公开(公告)日：2009-03-19

申请号：US12274257

申请日：2008-11-19

申请人： Robert W. LYLE ,  Michael J. WINER

发明人： Robert W. LYLE ,  Michael J. WINER

IPC分类号： G06F17/30

CPC分类号： G06F16/2308 ,  Y10S707/99932

摘要： A system and a computer readable medium for estimating the first access time of a plurality of currently active transactions accessing at least one database object is disclosed. According to varying embodiments of the system and computer readable medium disclosed herein, the present invention may provide an efficient mechanism for tracking the earliest first access time of the set of all currently active transactions accessing an object in a database system.

摘要翻译： 公开了一种用于估计访问至少一个数据库对象的多个当前活动事务的第一访问时间的系统和计算机可读介质。 根据本文公开的系统和计算机可读介质的不同实施例，本发明可以提供用于跟踪访问数据库系统中的对象的所有当前活动事务的集合的最早的第一访问时间的有效机制。

公开(公告)号：US20130091112A1

公开(公告)日：2013-04-11

申请号：US13253879

申请日：2011-10-05

申请人： Balakrishna R. IYER ,  Robert W. LYLE ,  Jerry MUKAI

发明人： Balakrishna R. IYER ,  Robert W. LYLE ,  Jerry MUKAI

IPC分类号： G06F7/00

CPC分类号： G06F17/30371 ,  G06F17/30336 ,  G06F17/30339 ,  G06F17/30345 ,  G06F17/30368 ,  G06F17/30595

摘要： Embodiments provide an approach for efficiently searching a temporal key index as well as enforcing key distinctiveness property in a database table corresponding to the index. For example, by addressing time range overlaps in an index having a sort order for temporal keys, a database management tool of a server system may efficiently process client requests while enforcing a temporal key property in the database table.