620 search results - page 6 / 124 » Algorithms for Rewriting Aggregate Queries Using Views |
98
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ICEIS
2003
IEEE
15 years 5 months ago
2003
IEEE
: We propose in this article an object-oriented approach to rewriting queries using views. Our approach aims to mitigate certain limitations of existing query rewriting approaches....
189
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VLDB
2001
ACM
15 years 12 months ago
2001
ACM
The problem of answering queries using views is to find efficient methods of answering a query using a set of previously materialized views over the database, rather than accessing...
PODS
2005
ACM
15 years 11 months ago
2005
ACM
We investigate the question of whether a query can be answered using a set V of views. We first define the problem in information-theoretic terms: we say that V determines if V pr...
DOLAP
2000
ACM
15 years 4 months ago
2000
ACM
A multidimensional database can be seen as a collection of multidimensional cubes, from which information is usually extracted by aggregation; aggregated data can be calculated ei...
PODS
2003
ACM
15 years 11 months ago
2003
ACM
In this paper we consider general path constraints for semistructured databases. Our general constraints do not suffer from the limitations of the path constraints previously stud...