347 search results - page 53 / 70 » Certain answers for XML queries |
IS
2008
13 years 8 months ago
2008
XQuery is a powerful XML query language with many features and syntactic constructs. For many common queries we do not need all the expressive power of XQuery. We investigate the ...
SIGMOD
2007
ACM
14 years 8 months ago
2007
ACM
Incomplete information arises naturally in numerous data management applications. Recently, several researchers have studied query processing in the context of incomplete informat...
EUC
2004
Springer
14 years 2 months ago
2004
Springer
Abstract. With the knowledge about their locations, mobile users are able to issue location-dependent queries. Most of existing approaches focus on how to obtain the information ab...
ECAI
2008
Springer
13 years 10 months ago
2008
Springer
Keyword-based search engines, though hugely popular, are limited when trying to answer very specific queries. The processing of search results is performed by users, rather than th...
DLOG
2009
13 years 6 months ago
2009
Abstract. Generalized closed world reasoning allows for the assumption of a specified maximal set of negated atomic assertions retaining the consistency of an indefinite knowledge ...