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» Query Containment Using Views
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PODS
2000
ACM
137views Database» more  PODS 2000»
13 years 9 months ago
Query Containment for Data Integration Systems
The problem of query containment is fundamental to many aspects of database systems, including query optimization, determining independence of queries from updates, and rewriting ...
Todd D. Millstein, Alon Y. Levy, Marc Friedman
EDBT
2002
ACM
136views Database» more  EDBT 2002»
14 years 5 months ago
Rewriting Unions of General Conjunctive Queries Using Views
The problem of finding contained rewritings of queries using views is of great importance in mediated data integration systems. In this paper, we first present a general approach f...
Junhu Wang, Michael J. Maher, Rodney W. Topor
ICEIS
2003
IEEE
13 years 10 months ago
QUEROM: An Object-Oriented Model to Rewriting Query Using Views
: We propose in this article an object-oriented approach to rewriting queries using views. Our approach aims to mitigate certain limitations of existing query rewriting approaches....
Abdelhak Seriai
DBPL
2001
Springer
102views Database» more  DBPL 2001»
13 years 10 months ago
View-Based Query Answering and Query Containment over Semistructured Data
Diego Calvanese, Giuseppe De Giacomo, Maurizio Len...
DEXAW
1998
IEEE
126views Database» more  DEXAW 1998»
13 years 9 months ago
An Extended Query Reformulation Technique Using Materialized Views
Materialized views offer opportunities for significant performance gain in query evaluation by providing fast access to pre-computed data. The question of when and how to use a ma...
Jae-young Chang, Sang-goo Lee