9683 search results - page 1344 / 1937 » Predicting query performance |
272
click to vote
VLDB
2007
ACM
16 years 7 months ago
2007
ACM
When integrating data from heterogeneous sources, it is often necessary to transform both the schemas and the data from the underlying sources in order to present the integrated d...
270
click to vote
VLDB
2007
ACM
16 years 7 months ago
2007
ACM
Ontology, an explicit specification of shared conceptualization, has been increasingly used to define formal data semantics and improve data reusability and interoperability in en...
189
click to vote
SIGMOD
2004
ACM
16 years 7 months ago
2004
ACM
Sovereign information sharing allows autonomous entities to compute queries across their databases in such a way that nothing apart from the result is revealed. We describe an imp...
177
click to vote
SIGMOD
2002
ACM
16 years 7 months ago
2002
ACM
Spatial indexing has been one of the active focus areas in recent database research. Several variants of Quadtree and R-tree indexes have been proposed in database literature. In ...
191
click to vote
PODS
2006
ACM
16 years 7 months ago
2006
ACM
We study the verification of compositions of Web Service peers which interact asynchronously by exchanging messages. Each peer has access to a local database and reacts to user in...