8220 search results - page 337 / 1644 » Querying XML Data |
176
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VLDB
2004
ACM
16 years 5 days ago
2004
ACM
When a client submits a set of XPath queries to a XML database on a network, the set of answer sets sent back by the database may include redundancy in two ways: some elements may...
212
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PODS
2002
ACM
16 years 7 months ago
2002
ACM
We consider conjunctive queries with arithmetic comparisons over multiple continuous data streams. We specify an algorithm for determining whether or not a query can be evaluated ...
161
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PODS
1993
ACM
15 years 11 months ago
1993
ACM
In this paper, we motivate four di erent user de ned window query classes and derive a probabilistic model for each of them. For each model, we characterize the e ciency of spatia...
201
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VLDB
2005
ACM
16 years 9 days ago
2005
ACM
Query optimizers in current database systems are designed to pick a single efficient plan for a given query based on current statistical properties of the data. However, different...
171
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VLDB
1999
ACM
15 years 11 months ago
1999
ACM
While the desire to support fast, ad hoc query processing for large data warehouses has motivated the