5066 search results - page 114 / 1014 » Spectra of structures and relations |
276
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ICDE
2004
IEEE
16 years 5 months ago
2004
IEEE
Most of today's structured data is stored in relational databases. Such a database consists of multiple relations which are linked together conceptually via entity-relationsh...
126
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BMCBI
2008
15 years 4 months ago
2008
Background: Crop wild relatives are wild species that are closely related to crops. They are valuable as potential gene donors for crop improvement and may help to ensure food sec...
137
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PEPM
2010
ACM
16 years 1 months ago
2010
ACM
We show how to efficiently evaluate generic map-filter-product queries, generalizations of select-project-join (SPJ) queries in relational algebra, based on a combination of two...
146
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CCS
2007
ACM
15 years 10 months ago
2007
ACM
In this paper, we study the maintenance of role-based access control (RBAC) models in database environments using transitive closure relations. In particular, the algorithms that ...
149
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CIKM
2007
Springer
15 years 10 months ago
2007
Springer
The rapid growth of available data arises the need for more sophisticated techniques for semantic access to information. It has been proved that using conceptual model or ontology...