349 search results - page 18 / 70 » Query Rewriting for Semistructured Data |
166
Voted
TSC
2010
14 years 10 months ago
2010
Data-Providing (DP) services allow query-like access to organizations' data via web services. The invocation of a DP service results in the execution of a query over data sour...
101
Voted
JCSS
2000
15 years 3 months ago
2000
We investigate a class of path constraints that is of interest in connection with both semistructured and structured data. In standard database systems, constraints are typically ...
270
Voted
ICDE
2007
IEEE
16 years 5 months ago
2007
IEEE
We study the problem of answering queries posed on virtual views of XML documents, a problem commonly encountered when enforcing XML access control and integrating data. We approa...
165
Voted
JAPLL
2010
15 years 2 months ago
2010
Answering queries over an incomplete database w.r.t. a set of constraints is an important computational task with applications in fields as diverse as information integration and ...
123
Voted
AMW
2010
15 years 5 months ago
2010
We address the problem of answering conjunctive queries over knowledge bases, specified by sets of first-order sentences called tuple-generating dependencies (TGDs). This problem i...