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VLDB
2006
ACM
203views Database» more  VLDB 2006»
16 years 6 months ago
The CQL continuous query language: semantic foundations and query execution
CQL, a Continuous Query Language, is supported by the STREAM prototype Data Stream Management System at Stanford. CQL is an expressive SQL-based declarative language for registeri...
Arvind Arasu, Shivnath Babu, Jennifer Widom
DASFAA
2011
IEEE
251views Database» more  DASFAA 2011»
14 years 10 months ago
Towards Web Search by Sentence Queries: Asking the Web for Query Substitutions
In this paper, we propose a method to search the Web for sentence substitutions for a given sentence query. Our method uses only lexico-syntactic patterns dynamically generated fro...
Yusuke Yamamoto, Katsumi Tanaka
ICDE
2004
IEEE
144views Database» more  ICDE 2004»
16 years 8 months ago
Spatio-Temporal Aggregation Using Sketches
Several spatio-temporal applications require the retrieval of summarized information about moving objects that lie in a query region during a query interval (e.g., the number of m...
Yufei Tao, George Kollios, Jeffrey Considine, Feif...
ICDE
2010
IEEE
199views Database» more  ICDE 2010»
15 years 10 months ago
XMorph: A Shape-Polymorphic, Domain-Specific XML Data Transformation Language
By imposing a single hierarchy on data, XML makes queries brittle in the sense that a query might fail to produce the desired result if it is executed on the same data organized in...
Curtis Dyreson, Sourav S Bhowmick, Aswani Rao Jann...
EDBT
2012
ACM
228views Database» more  EDBT 2012»
13 years 9 months ago
Towards scalable data integration under constraints
In this paper we consider the problem of answering queries using views, with or without ontological constraints, which is important for data integration, query optimization, and d...
George Konstantinidis, José Luis Ambite