4137 search results - page 786 / 828 » Managing Expressions as Data in Relational Database Systems |
166
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EDBT
2010
ACM
15 years 11 months ago
2010
ACM
Most modern RDBMS depend on the query processing optimizer’s cost model to choose the best execution plan for a given query. Since the physical IO (PIO) is a costly operation to...
188
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GIS
2002
ACM
15 years 5 months ago
2002
ACM
Clustering is one of the most important tasks for geographic knowledge discovery. However, existing clustering methods have two severe drawbacks for this purpose. First, spatial c...
163
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INFOCOM
2009
IEEE
16 years 20 days ago
2009
IEEE
Abstract—Path computation elements (PCE’s) are used to compute end-to-end paths across multiple areas. Multiple PCE’s may be dedicated to each area to provide sufficient path...
165
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SACMAT
2006
ACM
15 years 12 months ago
2006
ACM
Delegation of authority is an important process that needs to be captured by any access control model. In role-based access control models, delegation of authority involves delega...
146
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WWW
2005
ACM
16 years 6 months ago
2005
ACM
The recent evolution of Internet, driven by the Web services technology, is extending the role of the Web from a support of information interaction to a middleware for B2B interac...