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AAAI
2006
14 years 11 months ago
Compilation of Query-Rewriting Problems into Tractable Fragments of Propositional Logic
We consider the problem of rewriting a query efficiently using materialized views. In the context of information integration, this problem has received significant attention in th...
Yolifé Arvelo, Blai Bonet, Maria-Esther Vid...
CSREASAM
2006
14 years 11 months ago
A Framework for the User-Oriented Personal Information Protection
- Thanks to the spread of mobile technologies, we can access to the network anytime and from anywhere. In the near future, we will enable to realize the ubiquitous computing enviro...
Kenichi Takahashi, Kouichi Sakurai
IADIS
2004
14 years 11 months ago
Security Assertion Exchange for the Agent on the Semantic Web
The Semantic Web's success will depend on the implementation and use of Web Service becoming preeminent in Ecommerce, which will likely be agent-based in the future. On the S...
Joo-Young Lee, Ki-Young Moon
IIWAS
2004
14 years 11 months ago
Building the Architecture of A Statistics-Based Query Optimization Solution for Heterogeneous Mediators
Access to different and remote sources with heterogeneous formats is one of the most important challenges in Enterprise Information Integration. Even though there exists an increa...
Justo Hidalgo, Alberto Pan, José Losada, Ma...
DMDW
2003
134views Management» more  DMDW 2003»
14 years 11 months ago
Using Design Guidelines to Improve Data Warehouse Logical Design
Data Warehouse-(DW) logical design often start with a conceptual schema and then generates relational structures. Applying this approach implies to cope with two main aspects: (i) ...
Verónika Peralta, Raul Ruggia