152 search results - page 9 / 31 » Semantic Integrity Constraints for Spatial Databases |
107
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VLDB
1991
ACM
15 years 3 months ago
1991
ACM
: This paper describes a design methodology for an object oriented database,basedon a semantic network. This approach is based on the assumption that Yemanticdata models are more p...
103
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DEXA
1994
Springer
15 years 3 months ago
1994
Springer
A real-time database is a database in which both the data and the operations upon the data may have timing constraints. We have integrated real-time, object-oriented, semantic and ...
113
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COOPIS
2003
IEEE
15 years 5 months ago
2003
IEEE
The use of semantic knowledge in its various forms has become an important aspect in managing data in database and information systems. In the form of integrity constraints, it ha...
113
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ADBIS
2004
Springer
15 years 3 months ago
2004
Springer
Abstract. In concurrent database systems, correctness of update transactions refers to the equivalent effects of the execution schedule and some serial schedule over the same set o...
ICDT
2005
ACM
15 years 5 months ago
2005
ACM
We study the problem of rewriting queries using views in the presence of access patterns, integrity constraints, disjunction, and negation. We provide asymptotically optimal algori...