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» Relational Expressive Power of Constraint Query Languages
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EDBT
2008
ACM
137views Database» more  EDBT 2008»
14 years 7 months ago
Optimizing away joins on data streams
Abstract. Monitoring aggregates on IP traffic data streams is a compelling application for data stream management systems. Often, such streaming aggregation queries involve joining...
Lukasz Golab, Theodore Johnson, Nick Koudas, Dives...
VLDB
1998
ACM
170views Database» more  VLDB 1998»
13 years 7 months ago
Advanced Data Processing in KRISYS: Modeling Concepts, Implementation Techniques, and Client/Server Issues
The increasing power of modern computers steadily opens up new application domains for advanced data processing such as engineering and knowledge-based applications. To meet their...
Stefan Deßloch, Theo Härder, Nelson Men...
DKE
2007
136views more  DKE 2007»
13 years 7 months ago
Deciding XPath containment with MSO
XPath is the standard language for addressing parts of an XML document. We present a sound and complete decision procedure for containment of XPath queries. The considered XPath f...
Pierre Genevès, Nabil Layaïda
ESWS
2005
Springer
14 years 1 months ago
AquaLog: An Ontology-Portable Question Answering System for the Semantic Web
As semantic markup becomes ubiquitous, it will become important to be able to ask queries and obtain answers, using natural language (NL) expressions, rather than the keyword-based...
Vanessa Lopez, Michele Pasin, Enrico Motta
SIGMOD
2007
ACM
128views Database» more  SIGMOD 2007»
14 years 8 months ago
A SQL: 1999 code generator for the pathfinder xquery compiler
The Pathfinder XQuery compiler has been enhanced by a new code generator that can target any SQL:1999-compliant relational database system (RDBMS). This code generator marks an im...
Torsten Grust, Manuel Mayr, Jan Rittinger, Sherif ...