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» Derived Data Update in Semantic Databases
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SIGMOD
1995
ACM
88views Database» more  SIGMOD 1995»
13 years 11 months ago
Semantic Assumptions and Query Evaluation in Temporal Databases
When querying a temporal database, a user often makes certain semantic assumptions on stored temporal data. This paper formalizes and studies two types of semantic assumptions: po...
Claudio Bettini, Xiaoyang Sean Wang, Elisa Bertino...
ODBIS
2007
Springer
144views Database» more  ODBIS 2007»
14 years 1 months ago
Maintaining Semantic Mappings between Database Schemas and Ontologies
There is a growing need to define a semantic mapping from a database schema to an ontology. Such a mapping is an integral part of the data integration systems that use an ontology...
Yuan An, Thodoros Topaloglou
FUIN
2007
147views more  FUIN 2007»
13 years 7 months ago
Privacy Preserving Database Generation for Database Application Testing
Testing of database applications is of great importance. Although various studies have been conducted to investigate testing techniques for database design, relatively few efforts ...
Xintao Wu, Yongge Wang, Songtao Guo, Yuliang Zheng
ADBIS
2009
Springer
127views Database» more  ADBIS 2009»
14 years 2 months ago
Window Update Patterns in Stream Operators
Continuous queries applied over nonterminating data streams usually specify windows in order to obtain an evolving –yet restricted– set of tuples and thus provide timely result...
Kostas Patroumpas, Timos K. Sellis
WWW
2008
ACM
14 years 8 months ago
On incremental maintenance of 2-hop labeling of graphs
Recent interests on XML, Semantic Web, and Web ontology, among other topics, have sparked a renewed interest on graph-structured databases. A fundamental query on graphs is the re...
Ramadhana Bramandia, Byron Choi, Wee Keong Ng