265 search results - page 9 / 53 » Tree-width and functional dependencies in databases |
FCT
2001
Springer
14 years 3 days ago
2001
Springer
In this paper dense families of database relations are introduced. We characterize dependencies and keys of relation instances in terms of dense families. Key functions are also in...
HASKELL
2006
ACM
14 years 1 months ago
2006
ACM
Haskell’s type system with multi-parameter constructor classes and functional dependencies allows static (compile-time) computations to be expressed by logic programming on the ...
CORR
2011
Springer
13 years 2 months ago
2011
Springer
Abstract. We present a categorical denotational semantics for a database mapping, based on views, in the most general framework of a database integration/exchange. Developed databa...
TODS
2002
13 years 7 months ago
2002
g for Dependencies at Multiple Abstraction Levels Toon Calders Raymond T. Ng Jef Wijsen The notion of roll-up dependency (RUD) extends functional dependencies with generalization ...
ICAIL
2007
ACM
13 years 11 months ago
2007
ACM
As massive document repositories and knowledge management systems continue to expand, in proprietary environments as well as on the Web, the need for duplicate detection becomes i...