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SIGMOD
2009
ACM
140views Database» more  SIGMOD 2009»
16 years 6 months ago
Distributed data-parallel computing using a high-level programming language
The Dryad and DryadLINQ systems offer a new programming model for large scale data-parallel computing. They generalize previous execution environments such as SQL and MapReduce in...
Michael Isard, Yuan Yu
SIGMOD
2006
ACM
153views Database» more  SIGMOD 2006»
16 years 6 months ago
Interactive query formulation over web service-accessed sources
Integration systems typically support only a restricted set of queries over the schema they export. The reason is that the participating information sources contribute limited con...
Michalis Petropoulos, Alin Deutsch, Yannis Papakon...
SIGMOD
2005
ACM
197views Database» more  SIGMOD 2005»
16 years 6 months ago
Schema and ontology matching with COMA++
We demonstrate the schema and ontology matching tool COMA++. It extends our previous prototype COMA utilizing a composite approach to combine different match algorithms [3]. COMA+...
David Aumueller, Hong Hai Do, Sabine Massmann, Erh...
PODS
2004
ACM
137views Database» more  PODS 2004»
16 years 6 months ago
On the Memory Requirements of XPath Evaluation over XML Streams
The important challenge of evaluating XPath queries over XML streams has sparked much interest in the past few years. A number of algorithms have been proposed, supporting wider f...
Ziv Bar-Yossef, Marcus Fontoura, Vanja Josifovski
EDBT
2006
ACM
255views Database» more  EDBT 2006»
16 years 6 months ago
FIS-by-Step: Visualization of the Fast Index Scan for Nearest Neighbor Queries
Abstract. Many different index structures have been proposed for spatial databases to support efficient query processing. However, most of these index structures suffer from an exp...
Elke Achtert, Dominik Schwald