293 search results - page 26 / 59 » D2R MAP - A Database to RDF Mapping Language |
VLDB
1991
ACM
13 years 11 months ago
1991
ACM
Most database interfaces provide poor guidance on ad hoc query formulation, burdening users to learn, and to recall precisely the query language and the database. Kaleidoscope avo...
ICDT
2010
ACM
14 years 5 months ago
2010
ACM
It is known that the composition of schema mappings, each specified by source-to-target tgds (st-tgds), can be specified by a secondorder tgd (SO tgd). We consider the question of...
AGTIVE
2007
Springer
13 years 9 months ago
2007
Springer
Abstract. The DRAGOS database eases the development of graphbased applications by providing a uniform graph-oriented data storage facility. In this paper, we extend the existing da...
ICDE
1998
IEEE
14 years 9 months ago
1998
IEEE
Algebraic transformation and optimization techniques have been the method of choice in relational query execution, but applying them in OODBMS is difficult due to the complexity o...
PODS
2011
ACM
12 years 10 months ago
2011
ACM
In the traditional data exchange setting, source instances are restricted to be complete in the sense that every fact is either true or false in these instances. Although natural ...