103 search results - page 4 / 21 » Views and queries: determinacy and rewriting |
EDBT
2002
ACM
14 years 5 months ago
2002
ACM
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...
ICDT
2005
ACM
13 years 11 months ago
2005
ACM
d abstract) Foto Afrati1 and Rada Chirkova2 1 Electrical and Computing Eng., National Technical University of Athens, 157 73 Athens, Greece 2 Computer Science Department, North Car...
VLDB
2007
ACM
14 years 6 months ago
2007
ACM
The performance of XML database queries can be greatly enhanced by rewriting them using materialized views. We study the problem of rewriting a query using materialized views, whe...
ADBIS
2004
Springer
13 years 11 months ago
2004
Springer
Abstract. Query rewriting method is proposed for the heterogeneous information integration infrastructure formed by the subject mediator environment. Local as View (LAV) approach t...
SIGMOD
2006
ACM
14 years 6 months ago
2006
ACM
We study the problem of finding efficient equivalent viewbased rewritings of relational queries, focusing on query optimization using materialized views under the assumption that ...