专利名称：Parallel optimized triggers in parallel
processing database systems
发明人：James Chen,Chi Kim Hoang,Mark Anthony
Hodgens,Frederick Stuart Kaufmann,RolfGünter Erich Stegelmann
申请号：US09454729申请日：19991204公开号：US06374236B1公开日：20020416
专利附图：
摘要：A method, apparatus, and article of manufacture for accessing a subject table in
a computer system. The subject table is partitioned across a plurality of processing unitsof the computer system. A trigger is defined for the subject table, such that when atriggering event occurs on the subject table, a triggered action is performed. Both thetriggering event and triggered action can be performed in parallel by the computersystem. A spool table is generated for each partition of the subject table, wherein thespool table stores one or more necessary records accessed from the subject table bythe triggering event. In this manner, triggered actions that refer to these necessary rowsneed not access the subject table again.
申请人：NCR CORPORATION
代理机构：Gates & Cooper
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容