The aqua approximate query answering system

被引:0
|
作者
Acharya, S [1 ]
Gibbons, PB [1 ]
Poosala, V [1 ]
Ramaswamy, S [1 ]
机构
[1] AT&T Bell Labs, Informat Sci Res Ctr, Murray Hill, NJ 07974 USA
关键词
D O I
暂无
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Aqua is a system for providing fast, approximate answers to aggregate queries, which are very common in OLAP applications. It has been designed to run on top of any commercial relational DBMS. Aqua precomputes synopses (special statistical summaries) of the original data and stores them in the DBMS. It provides approximate answers along with quality guarantees by rewriting the queries to run on these synopses. Finally, Aqua keeps the synopses up-to-date as the database changes, using fast incremental maintenance techniques.
引用
收藏
页码:574 / 576
页数:3
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