349 search results - page 38 / 70 » Query Rewriting for Semistructured Data |
232
Voted
SIGMOD
2009
ACM
16 years 4 months ago
2009
ACM
Schema evolution poses serious challenges in historical data management. Traditionally historical data have been archived either by (i) migrating them into the current schema vers...
108
Voted
CIKM
2009
Springer
15 years 10 months ago
2009
Springer
The publish-subscribe paradigm is an effective approach for data publishers to asynchronously disseminate relevant data to a large number of data subscribers. A lot of recent res...
151
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ESWS
2009
Springer
15 years 10 months ago
2009
Springer
We consider the problem of a user querying semistructured data such as RDF without knowing its structure. In these circumstances, it is helpful if the querying system can perform a...
122
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PODS
2007
ACM
16 years 4 months ago
2007
ACM
In [3], we introduced a framework for querying and updating probabilistic information over unordered labeled trees, the probabilistic tree model. The data model is based on trees ...
164
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SIGMOD
2000
ACM
15 years 8 months ago
2000
ACM
We investigate the problem of using materialized views to answer SQL queries. We focus on modern decision-support queries, which involve joins, arithmetic operations and other (po...