470 search results - page 50 / 94 » Privacy-Preserving Queries over Relational Databases |
CORR
2011
Springer
13 years 13 days ago
2011
Springer
Abstract. We consider the setting of ontological database access, where an Abox is given in form of a relational database D and where a Boolean conjunctive query q has to be evalua...
SSDBM
1999
IEEE
14 years 28 days ago
1999
IEEE
Conducting bioinformatic analyses involves biologists in expressing requests over a range of highly heterogeneous information sources and software tools. Such activities are labor...
ICDE
2006
IEEE
14 years 10 months ago
2006
IEEE
"Sparse" data, in which relations have many attributes that are null for most tuples, presents a challenge for relational database management systems. If one uses the no...
SIGMOD
2008
ACM
14 years 8 months ago
2008
ACM
We study the problem of querying relational data embedded in XML. Relational data can be represented by various tree structures in XML. However, current XML query methods, such as...
IS
2008
13 years 8 months ago
2008
In this paper we propose DFL -- a formal, graphical workflow language for dataflows, i.e., workflows where large amounts of complex data are manipulated, and the structure of the ...