403 search results - page 23 / 81 » Constraint Databases and Geographic Information Systems |
EGOV
2003
Springer
15 years 5 months ago
2003
Springer
Nowadays, there are an emergence of spatial or geographic data stored in several and heterogeneous databases, mostly in Geographic Information Systems (GIS). The diversity of GIS a...
DOLAP
2005
ACM
15 years 1 months ago
2005
ACM
Data warehouses and OLAP systems help to interactively analyze huge volume of data. This data, extracted from transactional databases, frequently contains spatial information whic...
112
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SIGMOD
1999
ACM
15 years 4 months ago
1999
ACM
Selectivity estimation of queries is an important and wellstudied problem in relational database systems. In this paper, we examine selectivity estimation in the context of Geogra...
119
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PVLDB
2010
14 years 10 months ago
2010
Supporting legacy applications when the database schema evolves represents a long-standing challenge of practical and theoretical importance. Recent work has produced algorithms a...
92
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ICMCS
2009
IEEE
14 years 9 months ago
2009
IEEE
Rich online map interaction represents a useful tool to get multimedia information related to physical places. With this type of systems, users can automatically compute the optim...