Using query expression signatures in view matching
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    发明申请
    Using query expression signatures in view matching 失效
    在视图匹配中使用查询表达式签名

    公开(公告)号:US20060230017A1

    公开(公告)日:2006-10-12

    申请号:US11094924

    申请日:2005-03-31

    IPC分类号: G06F17/30

    摘要: A system for optimizing queries against a database is disclosed. The system comprises a memo structure that encodes a plurality of query expressions. The system also includes a signature mechanism that enables an assignment of the query expressions into equivalence classes. Methods of using such a system are additionally provided.

    摘要翻译: 公开了一种用于优化针对数据库的查询的系统。 该系统包括对多个查询表达式进行编码的备忘录结构。 该系统还包括一个签名机制,可以将查询表达式分配为等价类。 另外提供使用这种系统的方法。