Sciweavers

1679 search results - page 27 / 336
» Pointcuts as Functional Queries
Sort
View
88
Voted
DBPL
2007
Springer
102views Database» more  DBPL 2007»
15 years 6 months ago
A Theory of Stream Queries
Data streams are modeled as infinite or finite sequences of data elements coming from an arbitrary but fixed universe. The universe can have various built-in functions and predi...
Yuri Gurevich, Dirk Leinders, Jan Van den Bussche
107
Voted
DLOG
2003
15 years 2 months ago
Rewriting Aggregate Queries using Description Logic
This paper presents an application of a DL reasoner to the optimization of an object-relational query language. Queries containing aggregate functions are difficult to optimize be...
David DeHaan, David Toman, Grant E. Weddell
117
Voted
ICDE
2010
IEEE
202views Database» more  ICDE 2010»
16 years 13 days ago
Ranked Queries over Sources with Boolean Query Interfaces without Ranking Support
Many online or local data sources provide powerful querying mechanisms but limited ranking capabilities. For instance, PubMed allows users to submit highly expressive Boolean keywo...
Panagiotis G. Ipeirotis, Vagelis Hristidis, Yuheng...
103
Voted
ICMCS
2005
IEEE
132views Multimedia» more  ICMCS 2005»
15 years 6 months ago
Approximating the selectivity of multimedia range queries
This paper introduces a new approach of approximating the selectivity of multimedia range queries. Estimating the selectivity of a range query is a pre-requisite to optimize a mul...
Mario Döller, Harald Kosch
DEXA
2000
Springer
104views Database» more  DEXA 2000»
15 years 4 months ago
Extending RDBMS for Allowing Fuzzy Quantified Queries
This paper is mainly concerned with the extension of database management systems querying capabilities, so that users may address queries involving preferences and get discriminate...
Leonid José Tineo Rodríguez