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» Efficiency of Nested Relational Document Database Systems
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DBPL
1995
Springer
106views Database» more  DBPL 1995»
15 years 4 months ago
On Impossibility of Decremental Recomputation of Recursive Queries in Relational Calculus and SQL
We study the problem of maintaining recursively-de ned views, such as the transitive closure of a relation, in traditional relational languages that do not have recursion mechanis...
Guozhu Dong, Leonid Libkin, Limsoon Wong
WSC
1998
15 years 2 months ago
Array-driven Simulation of Real Databases
A method to represent actual relational databases with arrays for simulation modeling of their performance as part of a software/hardware system has been created. The method inclu...
William S. Keezer
XIMEP
2005
ACM
174views Database» more  XIMEP 2005»
15 years 6 months ago
NaXDB - Realizing Pipelined XQuery Processing in a Native XML Database System
Supporting queries and modifications on XML documents is a challenging task, and several related approaches exist. When implementing query and modification languages efficientl...
Jens Hündling, Jan Sievers, Mathias Weske
CIKM
2011
Springer
14 years 1 months ago
Tractable XML data exchange via relations
We consider data exchange for XML documents: given source and target schemas, a mapping between them, and a document conforming to the source schema, construct a target document a...
Rada Chirkova, Leonid Libkin, Juan L. Reutter
GBRPR
2007
Springer
15 years 5 months ago
An Efficient Ontology-Based Expert Peering System
Abstract. This paper proposes an expert peering system for information exchange. Our objective is to develop a real-time search engine for an online community where users can ask e...
Tansu Alpcan, Christian Bauckhage, Sachin Agarwal