7607 search results - page 153 / 1522 » Querying data provenance |
165
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ISAAC
2005
Springer
16 years 4 hour ago
2005
Springer
In this paper we present space-query trade-offs for external memory data structures that answer shortest path queries on planar directed graphs. For any S = Ω(N1+ ) and S = O(N2...
144
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WEBDB
1999
Springer
15 years 10 months ago
1999
Springer
Accessing and integrating data from heterogeneous sources has become a significant challenge. So-called adapters provide the functionality for translating SQL queries into querie...
172
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PDIS
1994
IEEE
15 years 10 months ago
1994
IEEE
Many new database applications require very large volumes of data. Mariposa is a data base system under construction at Berkeley responding to this need. Mariposa objects can be s...
196
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DKE
1998
15 years 6 months ago
1998
The main purpose of this paper is to investigate the characteristics that distinguish spatial databases systems from traditional ones. Hereto, we give an overview of some well-kno...
156
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ICCSA
2009
Springer
16 years 1 months ago
2009
Springer
Data aggregation in Geographic Information Systems (GIS) is a desirable feature, spatial data are integrated in OLAP engines for this purpose. However, the development and operatio...