716 search results - page 72 / 144 » Optimizing Queries in Extended Relational Databases |
103
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VLDB
1998
ACM
15 years 6 months ago
1998
ACM
In this paper, we present the results that we have obtained by comparing and testing three well-known database middleware solutions. We have analyzed their features related to glo...
111
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COCO
2003
Springer
15 years 7 months ago
2003
Springer
We consider a fundamental problem in data structures, static predecessor searching: Given a subset S of size n from the universe [m], store S so that queries of the form “What i...
107
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IDEAS
2007
IEEE
15 years 8 months ago
2007
IEEE
In this paper we study the problem of deciding whether a regular path query over views in data-integration systems can be re-expressed without recursion. The problem becomes chall...
107
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CIKM
2007
Springer
15 years 8 months ago
2007
Springer
With increasing amount of data being stored in XML format, OLAP queries over these data become important. OLAP queries have been well studied in the relational database systems. H...
114
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PODS
2006
ACM
16 years 1 months ago
2006
ACM
Query containment is a fundamental algorithmic problem in database query processing and optimization. Under set semantics, the query-containment problem for conjunctive queries ha...