发明名称 |
Aggregate join index for relational databases |
摘要 |
The retrieval of data from a database in a computerized database management system is optimized through the use of an aggregate join index. The aggregate join index combines one or more commonly-used columns of the base tables with the results from one or more aggregation expressions pre-computed from one or more columns of the tables.
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申请公布号 |
US6505189(B1) |
申请公布日期 |
2003.01.07 |
申请号 |
US20000594964 |
申请日期 |
2000.06.15 |
申请人 |
NCR CORPORATION |
发明人 |
ON AU GRACE KWAN;HOANG CHI KIM |
分类号 |
G06F17/30;(IPC1-7):G06F17/30 |
主分类号 |
G06F17/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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