642 search results - page 55 / 129 » Answering XML Queries on Heterogeneous Data Sources |
KYOTODL
2000
13 years 10 months ago
2000
Today, bibliographical information is kept in a variety of digital libraries available on the Internet. The integration of bibliographical data is considered as one of the most im...
WECWIS
2008
IEEE
14 years 3 months ago
2008
IEEE
We present ISENS, a distributed, end-to-end, ontologybased information integration system. In response to a user’s query, our system is capable of retrieving facts from data sou...
PODS
2008
ACM
14 years 8 months ago
2008
ACM
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...
DAWAK
2005
Springer
14 years 2 months ago
2005
Springer
In this paper we describe the design of a tool supporting the integration of independently developed data warehouses, a problem that arises in several common scenarios. The basic f...
SIGMOD
2000
ACM
14 years 1 months ago
2000
ACM
We investigate the problem of using materialized views to answer SQL queries. We focus on modern decision-support queries, which involve joins, arithmetic operations and other (po...