383 search results - page 67 / 77 » Join operations in temporal databases |
NSF
2001
Springer
15 years 2 months ago
2001
Springer
Today‘s use of mobile phones is mostly for coordination purposes. It seems reasonable to assume that 3G and 4G high bandwidth systems will be used in a similar way. This paper th...
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SEMCO
2009
IEEE
15 years 4 months ago
2009
IEEE
Semantic integration in the hidden Web is an emerging area of research where traditional assumptions do not always hold. Frequent changes, conflicts and the sheer size of the hid...
ESWS
2008
Springer
14 years 11 months ago
2008
Springer
In this contribution a system is presented, which provides access to distributed data sources using Semantic Web technology. While it was primarily designed for data sharing and sc...
VLDB
2005
ACM
15 years 3 months ago
2005
ACM
Modern computer work stations provide thousands of applications that store data in >100.000 files on the file system of the underlying OS. To handle these files data process...
FOCS
1998
IEEE
15 years 1 months ago
1998
IEEE
This paper deals with the evaluation of acyclic Boolean conjunctive queries in relational databases. By well-known results of Yannakakis [1981], this problem is solvable in polynom...