1004 search results - page 91 / 201 » Safe Constraint Queries |
ICDT
2010
ACM
14 years 6 months ago
2010
ACM
It is known that the composition of schema mappings, each specified by source-to-target tgds (st-tgds), can be specified by a secondorder tgd (SO tgd). We consider the question of...
ICLP
2010
Springer
14 years 24 days ago
2010
Springer
Abstract. In this doctoral work we aim at developing a new approach to labelled semantics and equivalences for the Concurrent Constraint Programming (CCP) which will enable a broad...
JSW
2008
13 years 8 months ago
2008
In a mobile computing system, users carrying portable devices can access database services from any location without requiring a fixed position in the networking environment. Some ...
ESA
2005
Springer
14 years 2 months ago
2005
Springer
Abstract. A materialized view is a certain synopsis structure precomputed from one or more data sets (called base tables) in order to facilitate various queries on the data. When t...
KI
2002
Springer
13 years 8 months ago
2002
Springer
In the previous two decades, a number of qualitative constraint calculi have been developed, which are used to represent and reason about spatial configurations. A common property...