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EDBT
2012
ACM
11 years 11 months ago
2012
ACM
We present a hierarchical distributed communication and control architecture for Smart Grids. The proposed topology consists of multiple layers to allow for robust and flexible d...
PODS
2006
ACM
14 years 9 months ago
2006
ACM
Given that most elementary problems in database design are NP-hard, the currently used database design algorithms produce suboptimal results. For example, the current 3NF decompos...
IS
2008
13 years 9 months ago
2008
Consistent query answering is the problem of characterizing and computing the semantically correct answers to queries from a database that may not satisfy certain integrity constr...
ODBIS
2007
Springer
14 years 3 months ago
2007
Springer
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...
VLDB
1989
ACM
14 years 1 months ago
1989
ACM
The derived data update problem involves the transformation of modifications of derived facts into corresponding changes to base facts and other derived facts. Using a database sc...