415 search results - page 59 / 83 » Efficient Processing of Relational Queries with Sum Constrai... |
GIS
2006
ACM
14 years 8 months ago
2006
ACM
Given a query point and a collection of spatial features, a multi-type nearest neighbor (MTNN) query finds the shortest tour for the query point such that only one instance of eac...
PODS
2005
ACM
14 years 7 months ago
2005
ACM
Abstract. We present a semantics and answer set programs for relational peer data exchange systems. When a peer answers a query, it exchanges data with other peers in order to supp...
CIKM
2009
Springer
14 years 1 months ago
2009
Springer
Background: Finding relevant articles from PubMed is challenging because it is hard to express the user’s specific intention in the given query interface, and a keyword query ty...
ICDT
2012
ACM
11 years 9 months ago
2012
ACM
A universal model of a database D and a set Σ of integrity constraints is a database that extends D, satisfies Σ, and is most general in the sense that it contains sound and co...
DESRIST
2009
Springer
13 years 12 months ago
2009
Springer
Information Systems Security (ISS) is critical to ensuring the integrity and credibility of digitally exchanged information in business processes. Information systems development ...