2674 search results - page 381 / 535 » Data Models and Query Languages for Spatial Databases |
158
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DOOD
1997
Springer
15 years 10 months ago
1997
Springer
Abstract. This work discusses the CROQUE approach to the maintenance problem for materialized views. In a CROQUE database, application-speci ed collections (type extents or classes...
166
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VLDB
1993
ACM
15 years 10 months ago
1993
ACM
ract One important aspect of scientific data management is metadata management. Metadata is information about data (e.g., content, source, processing applied, precision). One kind ...
173
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ICDE
1994
IEEE
15 years 10 months ago
1994
IEEE
The relational data model is based on sets of tuples, i.e. it does not allow duplicate tuples in a relation. Many database languages and systems do require multi-set place, the hi...
192
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ICDE
2005
IEEE
16 years 2 days ago
2005
IEEE
Many location-based applications require constant monitoring of k-nearest neighbor (k-NN) queries over moving objects within a geographic area. Existing approaches to this problem...
175
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BTW
2003
Springer
15 years 11 months ago
2003
Springer
Abstract: In order to achieve efficient execution plans for queries comprising userdefined data types and predicates, the database system has to be provided with appropriate index ...