2043 search results - page 366 / 409 » The Limits of Querying Ontologies |
144
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CIKM
2000
Springer
15 years 10 months ago
2000
Springer
An e ective bu er management system is crucial for any database management system. While much work has been expended to provide extensible data types,extensible query languages an...
167
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PODS
1999
ACM
15 years 10 months ago
1999
ACM
One of the most important types of query processing in spatial databases and geographic information systems is the spatial join, an operation that selects, from two relations, all...
148
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SIGMOD
1999
ACM
15 years 10 months ago
1999
ACM
A major bottleneck in implementing sampling as a primitive relational operation is the ine ciency ofsampling the output of a query. It is not even known whether it is possible to ...
143
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ECOOP
1999
Springer
15 years 10 months ago
1999
Springer
Several advanced applications, such as those dealing with the Web, need to handle data whose structure is not known a-priori. Such requirement severely limits the applicability of ...
218
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ISD
1999
Springer
15 years 10 months ago
1999
Springer
The successful development of any geographic information system project needs the careful design and implementation of spatial databases via conceptual and logical data-modeling. T...