427 search results - page 32 / 86 » Conjunctive Query Answering in EL using a Database System |
ICDE
2008
IEEE
14 years 10 months ago
2008
IEEE
This paper introduces U-relations, a succinct and purely relational representation system for uncertain databases. U-relations support attribute-level uncertainty using vertical pa...
ISCI
2007
13 years 8 months ago
2007
Efficient processing of distance-based queries (DBQs) is of great importance in spatial databases due to the wide area of applications that may address such queries. The most repr...
DOLAP
2005
ACM
13 years 10 months ago
2005
ACM
OLAP users heavily rely on visualization of query answers for their interactive analysis of massive amounts of data. Very often, these answers cannot be visualized entirely and th...
SIGMOD
2009
ACM
14 years 9 months ago
2009
ACM
Existing keyword-search systems in relational databases require users to submit a complete query to compute answers. Often users feel "left in the dark" when they have l...
LPNMR
2005
Springer
14 years 2 months ago
2005
Springer
We introduce a declarative approach for a coherent composition of autonomous databases. For this we use ID-logic, a formalism that extends classical logic with inductive definitio...