654 search results - page 20 / 131 » Complexity of Answering Queries Using Materialized Views |
ICEIS
2003
IEEE
14 years 1 months ago
2003
IEEE
: 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....
VLDB
1991
ACM
13 years 12 months ago
1991
ACM
Queries in object-oriented datab;Lqcs are formulated against a class and retrieve instnnccls of the class sat,isfying a certain predicate on the att,riblltes of the class. The pre...
SIGMOD
2011
ACM
12 years 11 months ago
2011
ACM
We study the problem of context-sensitive ranking for document retrieval, where a context is defined as a sub-collection of documents, and is specified by queries provided by do...
ICDT
2003
ACM
14 years 1 months ago
2003
ACM
All the languages for querying semistructured data and the web use as an integral part regular expressions. Based on practical observations, finding the paths that satisfy those r...
ADBIS
2004
Springer
14 years 1 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...