Sciweavers

115 search results - page 7 / 23
» Predicate Migration: Optimizing Queries with Expensive Predi...
Sort
View
EDBT
1994
ACM
149views Database» more  EDBT 1994»
13 years 11 months ago
On the Estimation of Join Result Sizes
Abstract. Good estimates of join result sizes are critical for query optimization in relational database management systems. We address the problem of incrementally obtaining accur...
Arun N. Swami, K. Bernhard Schiefer
IDEAS
2008
IEEE
80views Database» more  IDEAS 2008»
14 years 1 months ago
Improved count suffix trees for natural language data
With more and more natural language text stored in databases, handling respective query predicates becomes very important. Optimizing queries with predicates includes (sub)string ...
Guido Sautter, Cristina Abba, Klemens Böhm
ER
2004
Springer
144views Database» more  ER 2004»
14 years 22 days ago
Expressing and Optimizing Similarity-Based Queries in SQL
Searching for similar objects (in terms of near and nearest neighbors) of a given query object from a large set is an essential task in many applications. Recent years have seen g...
Like Gao, Min Wang, Xiaoyang Sean Wang, Sriram Pad...
VLDB
2001
ACM
82views Database» more  VLDB 2001»
13 years 11 months ago
Supporting Incremental Join Queries on Ranked Inputs
This paper investigates the problem of incremental joins of multiple ranked data sets when the join condition is a list of arbitrary user-defined predicates on the input tuples. ...
Apostol Natsev, Yuan-Chi Chang, John R. Smith, Chu...
ICDE
2003
IEEE
144views Database» more  ICDE 2003»
14 years 8 months ago
Scalable template-based query containment checking for web semantic caches
Semantic caches, originally proposed for client-server database systems, are being recently deployed to accelerate the serving of dynamic web content by transparently caching data...
Khalil Amiri, Sanghyun Park, Renu Tewari, Sriram P...