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» Creating Database Queries by Demonstration
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VLDB
2004
ACM
126views Database» more  VLDB 2004»
14 years 23 days ago
Instance-based Schema Matching for Web Databases by Domain-specific Query Probing
In a Web database that dynamically provides information in response to user queries, two distinct schemas, interface schema (the schema users can query) and result schema (the sch...
Jiying Wang, Ji-Rong Wen, Frederick H. Lochovsky, ...
CORR
2008
Springer
107views Education» more  CORR 2008»
13 years 7 months ago
Semantics and Evaluation of Top-k Queries in Probabilistic Databases
Abstract. We study here fundamental issues involved in top-k query evaluation in probabilistic databases. We consider simple probabilistic databases in which probabilities are asso...
Xi Zhang, Jan Chomicki
WEBDB
1998
Springer
106views Database» more  WEBDB 1998»
13 years 11 months ago
Interactive Query and Search in Semistructured Databases
Semistructured graph-based databases have been proposed as well-suited stores for World-Wide Web data. Yet so far, languages for querying such data are too complex for casual Web ...
Roy Goldman, Jennifer Widom
EOR
2006
117views more  EOR 2006»
13 years 7 months ago
Heuristics for selecting robust database structures with dynamic query patterns
The success of a company increasingly depends on timely information (internal or external) being available to the right person at the right time for crucial managerial decision-ma...
Andrew N. K. Chen, Paulo B. Goes, Alok Gupta, Jame...
SIGMOD
2003
ACM
105views Database» more  SIGMOD 2003»
14 years 7 months ago
Factorizing Complex Predicates in Queries to Exploit Indexes
Decision-support applications generate queries with complex predicates. We show how the factorization of complex query expressions exposes significant opportunities for exploiting...
Surajit Chaudhuri, Prasanna Ganesan, Sunita Sarawa...