347 search results - page 4 / 70 » Certain answers for XML queries |
CIKM
2009
Springer
13 years 10 months ago
2009
Springer
Answering queries using views is a well-established technique in databases. In this context, two outstanding problems can be formulated. The first one consists in deciding whethe...
EDBT
2002
ACM
14 years 5 months ago
2002
ACM
Abstract. Estimating the sizes of query results, and intermediate results, is crucial to many aspects of query processing. In particular, it is necessary for effective query optimi...
ER
2003
Springer
13 years 10 months ago
2003
Springer
We consider the problem of improving the efficiency of query processing on an XML interface of a relational database, for predefined query workloads. The main contribution of this ...
PODS
2009
ACM
14 years 6 months ago
2009
ACM
ICDE
2005
IEEE
14 years 6 months ago
2005
IEEE
The ability to compute top-k matches to XML queries is gaining importance due to the increasing number of large XML repositories. The efficiency of top-k query evaluation relies o...