view management问题,谢谢!# Database - 数据库
g*u
1 楼
在Implementing Data Cubes (Venky Harinarayan, Anand Rajaraman,Jeffery
Ullman,
Stanford University)这篇文章中,提到对于OLAP cube lattice,给定常数k,如何选
择k个节点view,以minimize the total query cost。说这个问题是straightforward
redcution from set cover problem。哪位大虾读过这几篇paper,能讲一下具体怎么
reduce from set cover?谢了。
Ullman,
Stanford University)这篇文章中,提到对于OLAP cube lattice,给定常数k,如何选
择k个节点view,以minimize the total query cost。说这个问题是straightforward
redcution from set cover problem。哪位大虾读过这几篇paper,能讲一下具体怎么
reduce from set cover?谢了。