6650 search results - page 352 / 1330 » Mutating database queries |
135
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IDEAS
2007
IEEE
15 years 11 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...
148
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VLDB
2007
ACM
15 years 11 months ago
2007
ACM
There is a growing consensus that it is desirable to query over the structure implicit in unstructured documents, and that ideally this capability should be provided incrementally...
173
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ICDE
2006
IEEE
15 years 11 months ago
2006
IEEE
We consider the problem of query optimization in distributed stream based systems where multiple continuous queries may be executing simultaneously. In such systems, distribution ...
169
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WWW
2005
ACM
15 years 10 months ago
2005
ACM
In this paper, we propose an approach to materialize XML data warehouses based on the frequent query patterns discovered from historical queries issued by users. The schemas of in...
144
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ISCIS
2004
Springer
15 years 10 months ago
2004
Springer
One of the classic data mining problems is discovery of frequent itemsets. This problem particularly attracts database community as it resembles traditional database querying. In t...