3836 search results - page 51 / 768 » Semantics of Database Transformations |
PODS
1989
ACM
13 years 11 months ago
1989
ACM
The alternating xpoint of a logic program with negation is de ned constructively. The underlying idea is monotonically to build up a set of negative conclusions until the least xp...
DBPL
1997
Springer
13 years 12 months ago
1997
Springer
We consider spatial databases that can be defined in terms of polynomial inequalities, and we are interested in monotonic transformations of spatial databases. We investigate a hi...
RULES
1993
Springer
13 years 11 months ago
1993
Springer
Semantic models have shown the utility of arbitrary user-de ned relationships for de ning the semantics of database information, while objectoriented models have developed a stron...
ADBIS
2004
Springer
14 years 1 months ago
2004
Springer
The need for Keyword search in databases is suggested both by Web integration with legacy database management system and by dynamic Web publication. However, it sacrifices the inh...
ICDE
2008
IEEE
14 years 2 months ago
2008
IEEE
We formulate three intuitive semantic properties for topk queries in probabilistic databases, and propose GlobalTopk query semantics which satisfies all of them. We provide a dyn...