789 search results - page 36 / 158 » On Theory Revision with Queries |
PODS
2006
ACM
14 years 8 months ago
2006
ACM
The query equivalence problem has been studied extensively for set-semantics and, more recently, for bag-set semantics. However, SQL queries often combine set and bag-set semantic...
PODS
2010
ACM
14 years 1 months ago
2010
ACM
Both semantic and type-based query optimization rely on the idea that queries often exhibit non-trivial rewritings if the state space of the database is restricted. Despite their ...
ISCI
2008
13 years 8 months ago
2008
This paper considers the theory of database queries on the complex value data model with external functions. Motivated by concerns regarding query evaluation, we first identify re...
ATAL
2009
Springer
13 years 12 months ago
2009
Springer
Normative systems in a multiagent system must be able to evolve over time, for example due to actions creating or removing norms in the system. The only formal framework to evalua...
SP
2008
IEEE
13 years 7 months ago
2008
IEEE
e an abstraction of zero-knowledge protocols that is le to a fully mechanized analysis. The abstraction is formalized within the applied pi-calculus using a novel equational theor...