373 search results - page 50 / 75 » Querying Priced Information in Databases: The Conjunctive Ca... |
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SIGMOD
2009
ACM
15 years 10 months ago
2009
ACM
We present a complete XPath cost-based optimization and execution framework and demonstrate its effectiveness and efficiency for a variety of queries and datasets. The framework i...
IAJIT
2010
14 years 8 months ago
2010
: A broad variety of data is available in distinct heterogeneous sources, stored under different formats: database formats (in relational and object-oriented models), document form...
SIGMOD
2010
ACM
14 years 7 months ago
2010
ACM
Given the continuous growth of databases and the abundance of diverse files in modern IT environments, there is a pressing need to integrate keyword search on heterogeneous inform...
DBSEC
2004
14 years 11 months ago
2004
A sequence of queries submitted by a database user within a short period of time may have a single, illuminating explanation. In this paper we consider sequences of single-record q...
DEXA
2007
Springer
15 years 3 months ago
2007
Springer
The semantic web is based on ontologies and metadata that indexes resources using ontologies. This indexing is called annotation. Ontology based information retrieval is an operati...