6650 search results - page 307 / 1330 » Mutating database queries |
242
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SIGMOD
2006
ACM
16 years 4 months ago
2006
ACM
This paper presents a principled framework for efficient processing of ad-hoc top-k (ranking) aggregate queries, which provide the k groups with the highest aggregates as results....
156
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ICDE
2005
IEEE
15 years 10 months ago
2005
IEEE
¡ Several systems have recently been proposed for the evaluation of XPath expressions. However, none of these systems have demonstrated both scalability with large document sizes ...
153
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CIKM
2006
Springer
15 years 6 months ago
2006
Springer
Peer Data Management Systems (PDMS) are a natural extension of heterogeneous database systems. One of the main tasks in such systems is efficient query processing. Insisting on co...
235
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VLDB
2002
ACM
16 years 5 months ago
2002
ACM
The view selection problem is to choose a set of views to materialize over a database schema, such that the cost of evaluating a set of workload queries is minimized and such that ...
131
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IDEAS
2008
IEEE
15 years 11 months ago
2008
IEEE
1 We propose a new framework for the summarization of XML document properties called EXsum (Element-wise XML summarization), which can capture statistical information of all import...