9 search results - page 2 / 2 » On the Equivalence of Recursive and Nonrecursive Datalog Pro... |
141
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ERSHOV
2006
Springer
15 years 9 months ago
2006
Springer
In this work, we present a semantic query optimization technique to improve the efficiency of the evaluation of a subset of SQL:1999 recursive queries. Using datalog notation, we c...
229
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ICDT
2009
ACM
16 years 6 months ago
2009
ACM
We study the problem of querying data sources that accept only a limited set of queries, such as sources accessible by Web services which can implement very large (potentially inf...
130
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TACS
1997
Springer
15 years 9 months ago
1997
Springer
d Abstract) Alexander Aiken1 and Edward L. Wimmers2 and Jens Palsberg3 1 EECS Department, University of California at Berkeley, Berkeley, CA 94720-1776. 2 IBM Almaden Research Cent...
146
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EDBT
2000
ACM
15 years 9 months ago
2000
ACM
the research activities. This abstract is to introduce the approach of a data model - EP data model. Its data structure is able to store as a finite set of nodes arbitrary effectiv...