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SIGMOD
2002
ACM
119views Database» more  SIGMOD 2002»
16 years 7 months ago
Rate-based query optimization for streaming information sources
Relational query optimizers have traditionally relied upon table cardinalities when estimating the cost of the query plans they consider. While this approach has been and continue...
Stratis Viglas, Jeffrey F. Naughton
EDBT
2008
ACM
122views Database» more  EDBT 2008»
16 years 7 months ago
Mining all frequent projection-selection queries from a relational table
In this paper we study the problem of mining all frequent queries in a given database table, a problem known to be intractable even for conjunctive queries. We restrict our attent...
Tao-Yuan Jen, Dominique Laurent, Nicolas Spyratos
ICDE
2010
IEEE
236views Database» more  ICDE 2010»
16 years 4 months ago
Explaining Structured Queries in Natural Language
— Many applications offer a form-based environment for na¨ıve users for accessing databases without being familiar with the database schema or a structured query language. User...
Alkis Simitsis, Georgia Koutrika, Yannis E. Ioanni...
PODS
2010
ACM
213views Database» more  PODS 2010»
15 years 12 months ago
Expressive languages for path queries over graph-structured data
For many problems arising in the setting of graph querying (such as finding semantic associations in RDF graphs, exact and approximate pattern matching, sequence alignment, etc.)...
Pablo Barceló, Carlos A. Hurtado, Leonid Li...
IDEAS
2002
IEEE
151views Database» more  IDEAS 2002»
15 years 11 months ago
Completing CAD Data Queries for Visualization
A system has been developed permitting database queries over data extracted from a CAD system where the query result is returned back to the CAD for visualization and analysis. Th...
Milena Gateva Koparanova, Tore Risch