Sciweavers

995 search results - page 6 / 199
» Optimization of Complex Nested Queries in Relational Databas...
Sort
View
ECCB
2005
IEEE
14 years 1 months ago
A query language for biological networks
Many areas of modern biology are concerned with the management, storage, visualization, comparison, and analysis of networks. For instance, networks are used to model signal trans...
Ulf Leser
ODBIS
2007
Springer
150views Database» more  ODBIS 2007»
14 years 1 months ago
An Effective SPARQL Support over Relational Databases
Supporting SPARQL queries over relational databases becomes an active topic recently. However, it has not received enough consideration when SPARQL queries include restrictions on...
Jing Lu, Feng Cao, Li Ma, Yong Yu, Yue Pan
DBPL
1997
Springer
87views Database» more  DBPL 1997»
13 years 11 months ago
Incremental Recomputation of Recursive Queries with Nested Sets and Aggregate Functions
We examine the power of incremental evaluation systems that use an SQL-like language for maintaining recursively-de ned views. We show that recursive queries such as transitive clo...
Leonid Libkin, Limsoon Wong
DEXA
2000
Springer
147views Database» more  DEXA 2000»
13 years 11 months ago
Lattice-Structured Domains, Imperfect Data and Inductive Queries
The relational model, as proposed by Codd, contained the concept of relations as tables composed of tuples of single valued attributes taken from a domain. In most of the early lit...
Sally Rice, John F. Roddick
SIGMOD
2006
ACM
159views Database» more  SIGMOD 2006»
14 years 7 months ago
Flexible and efficient XML search with complex full-text predicates
Recently, there has been extensive research that generated a wealth of new XML full-text query languages, ranging from simple Boolean search to combining sophisticated proximity a...
Sihem Amer-Yahia, Emiran Curtmola, Alin Deutsch