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KDID
2004
13 years 8 months ago
2004
Abstract. Database systems are islands of structure in a sea of unstructured data sources. Several real-world applications now need to create bridges for smooth integration of semi...
FOCS
2003
IEEE
14 years 10 hour ago
2003
IEEE
We give a complexity theoretic classification of homomorphism problems for graphs and, more generally, relational structures obtained by restricting the left hand side structure ...
WWW
2009
ACM
14 years 7 months ago
2009
ACM
In this paper, we present a framework for online discovery of semantic links from relational data. Our framework is based on declarative specification of the linkage requirements ...
FASE
2010
Springer
14 years 1 months ago
2010
Springer
Abstract. Abstraction is essential in the formal specification of programs. A common way of writing abstract specifications is to specify implementations in terms of basic mathem...
ADC
2009
Springer
14 years 1 months ago
2009
Springer
The paper presents the S.E.A.L. query language and interpreter for entity-association queries that allows such queries to be expressed in a much simpler way than in SQL. S.E.A.L (...