505 search results - page 18 / 101 » Queries with Incomplete Answers over Semistructured Data |
VLDB
1999
ACM
15 years 1 months ago
1999
ACM
XML is an emerging standard for data representation and exchange on the World-Wide Web. Due to the nature of information on the Web and the inherent flexibility of XML, we expect...
JLP
2000
14 years 9 months ago
2000
Generating query-answering plans for data integration systems requires to translate a user query, formulated in terms of a mediated schema, to a query that uses relations that are...
EDBT
2004
ACM
15 years 9 months ago
2004
ACM
We study the problem of answering queries over sources with limited access patterns. The problem is to decide whether a given query Q is feasible, i.e., equivalent to an executable...
ER
2005
Springer
15 years 3 months ago
2005
Springer
Query rewriting is a fundamental task in query optimization and data integration. With the advent of the web, there has been renewed interest in data integration, where data is dis...
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Voted
VLDB
1999
ACM
15 years 1 months ago
1999
ACM
XML is fast emerging as the dominant standard for representing data in the World Wide Web. Sophisticated query engines that allow users to effectively tap the data stored in XML d...