405 search results - page 45 / 81 » Semantic Assumptions and Query Evaluation in Temporal Databa... |
130
click to vote
PODS
2010
ACM
15 years 4 months ago
2010
ACM
For many problems arising in the setting of graph querying (such as finding semantic associations in RDF graphs, exact and approximate pattern matching, sequence alignment, etc.)...
126
click to vote
CORR
2011
Springer
14 years 6 months ago
2011
Springer
We study in this paper provenance information for queries with aggregation. Provenance information was studied in the context of various query languages that do not allow for aggr...
183
click to vote
ICDE
2005
IEEE
16 years 1 months ago
2005
IEEE
Index structures are designed to optimize search performance, while at the same time supporting efficient data updates. Although not explicit, existing index structures are typica...
109
click to vote
SIGMOD
2004
ACM
15 years 12 months ago
2004
ACM
We study the problem of answering queries through a target schema, given a set of mappings between one or more source schemas and this target schema, and given that the data is at...
161
click to vote
VLDB
2007
ACM
16 years 9 hour ago
2007
ACM
Evaluation of twig queries over probabilistic XML is investigated. Projection is allowed and, in particular, a query may be Boolean. It is shown that for a well-known model of pro...