197 search results - page 20 / 40 » Identifying relevant constraints for semantic query optimiza... |
JCSS
2000
13 years 7 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 ...
DBISP2P
2006
Springer
13 years 11 months ago
2006
Springer
Sharing of structured data in P2P overlays is a challenging problem, especially in the absence of a global schema. The nature of structured data stored in the overlay enforces stri...
BPM
2005
Springer
14 years 1 months ago
2005
Springer
The growing number of web services advocates distributed discovery infrastructures which are semantics-enabled and support quality of service (QoS). In this paper, we introduce a n...
SIGMOD
1996
ACM
13 years 11 months ago
1996
ACM
We investigate the problem of incremental maintenance of an SQL view in the face of database updates, and show that it is possible to reduce the total time cost of view maintenanc...
SIGIR
2004
ACM
14 years 29 days ago
2004
ACM
Document-centric XML collections contain text-rich documents, marked up with XML tags. The tags add lightweight semantics to the text. Querying such collections calls for a hybrid...