1445 search results - page 36 / 289 » XPath query containment |
SIGMOD
2001
ACM
14 years 9 months ago
2001
ACM
Virtually all proposals for querying XML include a class of query we term "containment queries". It is also clear that in the foreseeable future, a substantial amount of...
PODS
2006
ACM
14 years 9 months ago
2006
ACM
Query containment is a fundamental algorithmic problem in database query processing and optimization. Under set semantics, the query-containment problem for conjunctive queries ha...
SIGMOD
2008
ACM
14 years 9 months ago
2008
ACM
Motivated by the fact that XML is increasingly being used in distributed applications, we propose building a cooperative caching scheme for XML documents. Our scheme allows sharin...
ICDT
2009
ACM
14 years 10 months ago
2009
ACM
We study containment and equivalence of (unions of) conjunctive queries on relations annotated with elements of a commutative semiring. Such relations and the semantics of positiv...
SIGMOD
2003
ACM
14 years 9 months ago
2003
ACM
Recent years witnessed an increasing interest in researches in XML, partly due to the fact that XML has now become the de facto standard for data interchange over the internet. A ...