6746 search results - page 346 / 1350 » Multimodal Database Query |
155
click to vote
DEXA
2004
Springer
15 years 10 months ago
2004
Springer
Efficient storage and retrieval of trajectory indexes has become an essential requirement for moving objects databases. The existing 3DR-tree is known to be an effective trajectory...
178
click to vote
WWW
2003
ACM
15 years 9 months ago
2003
ACM
In this poster, we introduce the mechanism of handling the ordering structure of XML data by using the Nested Relational Sequence Database System (NRSD), which is built upon the N...
149
click to vote
DBISP2P
2003
Springer
15 years 9 months ago
2003
Springer
In this paper we give a robust logical and computational characterisation of peer-to-peer (p2p) database systems. We first define a precise model-theoretic semantics of a p2p sys...
139
click to vote
SIGMOD
1989
ACM
15 years 8 months ago
1989
ACM
Spatial objects other than points and boxes can be stored in spatial indexes, but the techniques usually require the use of approximations that can be arbitrarily bad. This leads ...
150
click to vote
VLDB
1995
ACM
15 years 8 months ago
1995
ACM
Query processing is one of the most, critical issues in Object-Oriented DBMSs. Extensible opt,imizers with efficient, search strategies require a cost model to select the most eff...