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EDBT
2012
ACM
247views Database» more  EDBT 2012»
13 years 9 months ago
Heuristics-based query optimisation for SPARQL
Query optimization in RDF Stores is a challenging problem as SPARQL queries typically contain many more joins than equivalent relational plans, and hence lead to a large join orde...
Petros Tsialiamanis, Lefteris Sidirourgos, Irini F...
ICDE
2003
IEEE
139views Database» more  ICDE 2003»
16 years 8 months ago
Super-Fast XML Wrapper Generation in DB2: A Demonstration
The XML Wrapper is a new feature of the federated database capabilities of DB2/UDB v8. It enables users and applications to issue SQL queries against XML data from a variety of so...
Vanja Josifovski, Sabine Massmann, Felix Naumann
DASFAA
2005
IEEE
91views Database» more  DASFAA 2005»
16 years 11 days ago
Semantic Characterization of Real World Events
Reducing the latency of information delivery in an event driven world has always been a challenge. It is often necessary to completely capture the attributes of events and relation...
Aparna Nagargadde, Sridhar Varadarajan, Krithi Ram...
VLDB
2005
ACM
125views Database» more  VLDB 2005»
16 years 7 days ago
Interactive Schema Translation with Instance-Level Mappings
We demonstrate a prototype that translates schemas from a source metamodel (e.g., OO, relational, XML) to a target metamodel. The prototype is integrated with Microsoft Visual Stu...
Philip A. Bernstein, Sergey Melnik, Peter Mork
ER
1999
Springer
155views Database» more  ER 1999»
15 years 11 months ago
Detecting Redundancy in Data Warehouse Evolution
A Data Warehouse DW can be abstractly seen as a set of materialized views de ned over a set of remote data sources. A DW is intended to satisfy a set of queries. The views materi...
Dimitri Theodoratos