1000 search results - page 8 / 200 » Provenance for Aggregate Queries |
PVLDB
2010
13 years 8 months ago
2010
Though partially automated, developing schema mappings remains a complex and potentially error-prone task. In this paper, we present TRAMP (TRAnsformation Mapping Provenance), an ...
DAIS
2009
13 years 7 months ago
2009
Queries are widely used for acquiring data distributed in opportunistically formed mobile networks. However, when queries are executed in such dynamic settings, the returned result...
VLDB
1989
ACM
14 years 1 months ago
1989
ACM
Fuzzy set theory represents a uniform framework for extending the relational database model to han-, dle imprecision of information found in the real world. None of the existing p...
VLDB
1995
ACM
14 years 1 months ago
1995
ACM
Efficient processing of aggregation queries is essential for decision support applications. This paper describes a class of query transformations, called eager aggregation and lat...
SDMW
2009
Springer
14 years 4 months ago
2009
Springer
Provenance access control has been recognized as one of the most important components in an enterprise-level provenance system. However, it has only received little attention in th...