152 search results - page 19 / 31 » Semantic Integrity Constraints for Spatial Databases |
SAS
2004
Springer
15 years 5 months ago
2004
Springer
Role logic is a notation for describing properties of relational structures in shape analysis, databases and knowledge bases. A natural fragment of role logic corresponds to two-va...
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ESORICS
1998
Springer
15 years 4 months ago
1998
Springer
When implementing a multilevel security policy for Object-Oriented Databases (OODBs), several aspects have to be investigated. One of these aspect is the design of multilevel OODB...
103
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AMW
2010
15 years 1 months ago
2010
Abstract. Consistent query answering (CQA) is about formally characterizing and computing semantically correct answers to queries posed to a database that may fail to satisfy certa...
ADBIS
2010
Springer
15 years 1 months ago
2010
Springer
Abstract. The need for location-based services has motivated an important research effort in the efficient processing of location-dependent queries. Most of the existing approaches...
CASCON
2004
15 years 1 months ago
2004
For several reasons a database may not satisfy certain integrity constraints (ICs), for example, when it is the result of integrating several independent data sources. However, mo...