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SIGMOD
2009
ACM
120views Database» more  SIGMOD 2009»
14 years 10 months ago
Query interactions in database workloads
Database workloads consist of mixes of queries that run concurrently and interact with each other. In this paper, we demonstrate that query interactions can have a significant imp...
Mumtaz Ahmad, Ashraf Aboulnaga, Shivnath Babu
ICALP
2007
Springer
14 years 4 months ago
Constant-Round Private Database Queries
We consider several private database query problems. The starting point of this work is the element rank problem: the server holds a database of n integers, and the user an integer...
Nenad Dedic, Payman Mohassel
ER
2004
Springer
103views Database» more  ER 2004»
14 years 3 months ago
Querying Heterogeneous Spatial Databases: Combining an Ontology with Similarity Functions
This paper uses a knowledge-based approach to querying heterogeneous spatial databases based on an ontology and conceptual and attribute similarities. The ontology, which may be in...
Mariella Gutiérrez, M. Andrea Rodríg...
EDBT
2009
ACM
132views Database» more  EDBT 2009»
14 years 4 months ago
A novel approach for efficient supergraph query processing on graph databases
In recent years, large amount of data modeled by graphs, namely graph data, have been collected in various domains. Efficiently processing queries on graph databases has attracted...
Shuo Zhang, Jianzhong Li, Hong Gao, Zhaonian Zou
CORR
2008
Springer
107views Education» more  CORR 2008»
13 years 10 months ago
Semantics and Evaluation of Top-k Queries in Probabilistic Databases
Abstract. We study here fundamental issues involved in top-k query evaluation in probabilistic databases. We consider simple probabilistic databases in which probabilities are asso...
Xi Zhang, Jan Chomicki