Sciweavers

298 search results - page 36 / 60
» Query Rewriting in DL-Lite_^(HN)_horn
Sort
View
ER
2007
Springer
163views Database» more  ER 2007»
15 years 5 months ago
Know your Limits: Enhanced XML Modeling with Cardinality Constraints
XML Schema supports the specification of occurrence constraints by declaring values for its min/maxOccurs attributes. These constraints are structural in the sense that they rest...
Sebastian Link, Thu Trinh
PKDD
2000
Springer
125views Data Mining» more  PKDD 2000»
15 years 2 months ago
Materialized Data Mining Views
Data mining is a useful decision support technique, which can be used to find trends and regularities in warehouses of corporate data. A serious problem of its practical applicatio...
Tadeusz Morzy, Marek Wojciechowski, Maciej Zakrzew...
PVLDB
2008
118views more  PVLDB 2008»
14 years 10 months ago
XTCcmp: XQuery compilation on XTC
XTCcmp, the XQuery Compiler of a native XML database system, extends Starburst's well-known Query Graph Model to serve as an internal representation and basis for query restr...
Christian Mathis, Andreas M. Weiner, Theo Här...
PVLDB
2008
167views more  PVLDB 2008»
14 years 10 months ago
Managing and querying transaction-time databases under schema evolution
The old problem of managing the history of database information is now made more urgent and complex by fast spreading web information systems, such as Wikipedia. Our PRIMA system ...
Hyun Jin Moon, Carlo Curino, Alin Deutsch, Chien-Y...
VLDB
2001
ACM
151views Database» more  VLDB 2001»
15 years 11 months ago
Approximate query mapping: Accounting for translation closeness
Abstract In this paper we present a mechanism for approximately translating Boolean query constraints across heterogeneous information sources. Achieving the best translation is ch...
Kevin Chen-Chuan Chang, Hector Garcia-Molina