491 search results - page 54 / 99 » Optimizing complex queries with multiple relation instances |
ICDE
2001
IEEE
14 years 9 months ago
2001
IEEE
We propose an extension to current view-based mediator systems called model-based mediation, in which views are defined and executed at the level of conceptual models (CMs) rather...
SIGMOD
2009
ACM
14 years 7 months ago
2009
ACM
Empowering users to access databases using simple keywords can relieve the users from the steep learning curve of mastering a structured query language and understanding complex a...
ESWS
2008
Springer
13 years 9 months ago
2008
Springer
The goal of this paper is to give an overview of the basics of the theory of RDF databases. We provide a formal definition of RDF that includes the features that distinguish this m...
ISSTA
2006
ACM
14 years 1 months ago
2006
ACM
Software product line modeling has received a great deal of attention for its potential in fostering reuse of software artifacts across development phases. Research on the testing...
ICDE
2008
IEEE
14 years 9 months ago
2008
IEEE
XML database systems are expected to handle increasingly complex queries over increasingly large and highly structured XML databases. An important problem that needs to be solved ...