349 search results - page 47 / 70 » Query Rewriting for Semistructured Data |
134
click to vote
COOPIS
2003
IEEE
15 years 7 months ago
2003
IEEE
The use of semantic knowledge in its various forms has become an important aspect in managing data in database and information systems. In the form of integrity constraints, it ha...
114
Voted
VLDB
2001
ACM
15 years 6 months ago
2001
ACM
In this paper we focus on the following problem in information management: given a large collection of recorded information and some knowledge of the process that is generating th...
117
click to vote
VLDB
1999
ACM
15 years 6 months ago
1999
ACM
We present an optimization method and algorithm designed for three objectives: physical data independence, semantic optimization, and generalized tableau minimization. The method ...
143
Voted
PVLDB
2008
15 years 1 months ago
2008
This paper studies, for the first time, the management of type information for an important class of semi-structured data: nested DAGs (Directed Acyclic Graphs) that describe exec...
109
Voted
ICDT
2007
ACM
15 years 8 months ago
2007
ACM
Abstract. In many cases, users may want to consider incomplete answers to their queries. Often, however, there is an overwhelming number of such answers, even if subsumed answers a...