1497 search results - page 31 / 300 » Constraint Databases: A Survey |
DEXA
2005
Springer
14 years 28 days ago
2005
Springer
Abstract. Database integrity constraints, understood as logical conditions that must hold for any database state, are not fully supported by current database technology. It is typi...
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...
NAACL
2007
13 years 8 months ago
2007
Previous multi-document relationship extraction and fusion research has focused on single relationships. Shifting the focus to multiple relationships allows for the use of mutual ...
ICDT
2003
ACM
14 years 18 days ago
2003
ACM
We study extensions of first-order logic over the reals with different types of transitive-closure operators as query languages for constraint databases that can be described by...
VLDB
1987
ACM
13 years 11 months ago
1987
ACM
A model for a historical database is described which is based upon time-stamped tuples as the unit of storage. The model includes both physical and logical time-stamps. The techni...