197 search results - page 3 / 40 » Identifying relevant constraints for semantic query optimiza... |
ICDE
1999
IEEE
14 years 8 months ago
1999
IEEE
We develop a data integration approach for the efficient evaluation of queries over autonomous source databases. The approach is based on some novel applications and extensions of...
DEXA
2005
Springer
14 years 1 months ago
2005
Springer
Current proposals for XML change detection use structural constraints to detect the changes and they ignore semantic constraints. Consequently, they may produce semantically incorr...
FQAS
2004
Springer
13 years 11 months ago
2004
Springer
In the context of relational as well as deductive databases, correct and efficient integrity checking is a crucial issue, as, without any guarantee of data consistency, the answers...
BIS
2008
13 years 9 months ago
2008
Deep web search requires a transformation between search keywords and semantically described and well-formed data structures. We approached this problem in our "In the Web of ...
CDB
2004
Springer
14 years 26 days ago
2004
Springer
Preference queries are relational algebra or SQL queries that contain occurrences of the winnow operator (find the most preferred tuples in a given relation). We present here a nu...