CAS
2005
13 years 4 months ago
2005
In this paper, we present a new method to estimate null values in relational database systems based on genetic algorithms. It can tune the membership functions of the linguistic v...
WM
2003
13 years 5 months ago
2003
: One of today’s hottest IT topics is integration, as bringing together information from different sources and structures is not completely solved. The approach outlined here wan...
GVD
2003
13 years 5 months ago
2003
Several mapping schemes have recently been proposed to store XML data in relational tables. Relational database systems are readily available and can handle vast amounts of data v...
CIKM
2008
Springer
13 years 6 months ago
2008
Springer
This demonstration presents the concepts, design, and implementation of SCDE, a relational database systems extended with the ability to solve constraint satisfaction problems (CS...
VLDB
2000
ACM
13 years 8 months ago
2000
ACM
Modern database applications show a growing demand for efficient and dynamic management of intervals, particularly for temporal and spatial data or for constraint handling. Common...
DEXAW
2007
IEEE
13 years 8 months ago
2007
IEEE
The vision of the Semantic Web is to make Web content machine-readable. To describe data, the Resource Description Framework has been extended with a schema-level and description ...
BTW
2007
Springer
13 years 8 months ago
2007
Springer
: Relational database systems are highly efficient hosts to table-shaped data. It is all the more interesting to see how a careful inspection of both, the XML tree structure as wel...
VLDB
1994
ACM
13 years 8 months ago
1994
ACM
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...
DBPL
1997
Springer
13 years 8 months ago
1997
Springer
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...
CLUSTER
2002
IEEE
13 years 9 months ago
2002
IEEE
The join is the most important, but also the most time consuming operation in relational database systems. We implemented the parallel Hybrid Hash Join algorithm on a PC-cluster a...