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ADT
2006
14 years 11 months ago
Data Confidentiality: to which extent cryptography and secured hardware can help
Data confidentiality has become a major concern for individuals as well as for companies and administrations. In a classical client-server setting, the access control management is...
Nicolas Anciaux, Luc Bouganim, Philippe Pucheral
PGLDB
2003
166views Database» more  PGLDB 2003»
15 years 10 days ago
ROSA: A Data Model and Query Language for e-Learning Objects
Learning Content Management Systems (LCMS) supports e-learning applications with storage and efficient access for e-learning objects (LO)s. ROSA is a LCMS built as a semantic laye...
Fabio Porto, Ana Maria de Carvalho Moura, Adriana ...
ICDE
2000
IEEE
144views Database» more  ICDE 2000»
16 years 9 days ago
Power Conservative Multi-Attribute Queries on Data Broadcast
In this paper, we study power conservation techniques for multi-attribute queries on wireless data broadcast channels. Indexing data on broadcast channels can improve client filte...
Qinglong Hu, Wang-Chien Lee, Dik Lun Lee
WEBDB
1999
Springer
131views Database» more  WEBDB 1999»
15 years 3 months ago
Adapter Generation for Extracting and Querying Data from Web
Accessing and integrating data from heterogeneous sources has become a significant challenge. So-called adapters provide the functionality for translating SQL queries into querie...
Kai-Uwe Sattler, Michael Höding
SIGMOD
1996
ACM
120views Database» more  SIGMOD 1996»
15 years 3 months ago
Implementing Data Cubes Efficiently
Decision support applications involve complex queries on very large databases. Since response times should be small, query optimization is critical. Users typically view the data ...
Venky Harinarayan, Anand Rajaraman, Jeffrey D. Ull...