518 search results - page 41 / 104 » Querying XML Views of Relational Data |
DEXAW
1998
IEEE
15 years 4 months ago
1998
IEEE
Materialized views offer opportunities for significant performance gain in query evaluation by providing fast access to pre-computed data. The question of when and how to use a ma...
ECIR
2009
Springer
15 years 9 months ago
2009
Springer
Abstract. Retrieving semistructured (XML) data typically requires either a structured query such as XPath, or a keyword query that does not take structure into account. In this pap...
ENTCS
2006
14 years 11 months ago
2006
Data integration systems provide a uniform query interface (UQI) to multiple, autonomous data sources [4]. This paper presents the universal data model (UDM) that captures the sem...
185
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VLDB
2001
ACM
16 years 10 hour ago
2001
ACM
The problem of answering queries using views is to find efficient methods of answering a query using a set of previously materialized views over the database, rather than accessin...
110
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SIGMOD
1999
ACM
15 years 4 months ago
1999
ACM
We address the problem of query rewriting for TSL, a language for querying semistructured data. We develop and present an algorithm that, given a semistructured query q and a set ...