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» Answering Multiple-Item Queries in Data Broadcast Systems
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WISE
2007
Springer
15 years 7 months ago
On Tree Pattern Query Rewriting Using Views
We study and present our findings on two closely related problems on xpath rewriting using views when both the view and the query are tree patterns involving /,// and []. First, g...
Junhu Wang, Jeffrey Xu Yu, Chengfei Liu
PVLDB
2008
131views more  PVLDB 2008»
15 years 24 days ago
Learning to create data-integrating queries
The number of potentially-related data resources available for querying -- databases, data warehouses, virtual integrated schemas -continues to grow rapidly. Perhaps no area has s...
Partha Pratim Talukdar, Marie Jacob, Muhammad Salm...
DILS
2009
Springer
15 years 8 months ago
Exploiting Parallelism to Accelerate Keyword Search on Deep-Web Sources
Increasingly, biological data is being shared over the deep web. Many biological queries can only be answered by successively searching a number of distinct web-sites. This paper i...
Tantan Liu, Fan Wang, Gagan Agrawal
CEC
2011
IEEE
14 years 1 months ago
Multi-level indexing in a distributed self-organized storage system
—In many systems providing storage and retrieval operations on data, indices are used to make these operations more efficient. Distributed storage systems provide means to distr...
Hannes Mühleisen, Tilman Walther, Robert Tolk...
VLDB
1990
ACM
116views Database» more  VLDB 1990»
15 years 5 months ago
A Probabilistic Framework for Vague Queries and Imprecise Information in Databases
A probabilistic learning model for vague queries and missing or imprecise information in databases is described. Instead of retrieving only a set of answers, our approach yields a...
Norbert Fuhr