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SIGMOD
1993
ACM
150views Database» more  SIGMOD 1993»
14 years 21 days ago
Predicate Migration: Optimizing Queries with Expensive Predicates
The traditional focus of relational query optimization schemes has been on the choice of join methods and join orders. Restrictions have typically been handled in query optimizers ...
Joseph M. Hellerstein, Michael Stonebraker
VLDB
1994
ACM
114views Database» more  VLDB 1994»
14 years 21 days ago
Including Group-By in Query Optimization
In existing relational database systems, processing of group-by and computation of aggregate functions are always postponed until all joins are performed. In this paper, we presen...
Surajit Chaudhuri, Kyuseok Shim
ADBIS
2006
Springer
104views Database» more  ADBIS 2006»
14 years 2 months ago
Multi-source Materialized Views Maintenance: Multi-level Views
In many information systems, the databases that make up the system are distributed in different modules or branch offices according to the requirements of the business enterprise. ...
Josep Silva, Jorge Belenguer, Matilde Celma
ICALP
2004
Springer
14 years 2 months ago
Group Spreading: A Protocol for Provably Secure Distributed Name Service
In order to enable communication between a dynamic collection of peers with given ID’s, such as “machine.cs.school.edu”, over the Internet, a distributed name service must b...
Baruch Awerbuch, Christian Scheideler
PVLDB
2010
93views more  PVLDB 2010»
13 years 7 months ago
Distributed Threshold Querying of General Functions by a Difference of Monotonic Representation
The goal of a threshold query is to detect all objects whose score exceeds a given threshold. This type of query is used in many settings, such as data mining, event triggering, a...
Guy Sagy, Daniel Keren, Izchak Sharfman, Assaf Sch...