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» Group Support Systems in Primary Processes
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DASFAA
2007
IEEE
165views Database» more  DASFAA 2007»
14 years 12 days ago
Making the Most of Cache Groups
Cache groups are a powerful concept for database caching, which is used to relieve the backend database load and to keep referenced data close to the application programs at the &q...
Andreas Bühmann, Theo Härder
SIGMOD
2007
ACM
160views Database» more  SIGMOD 2007»
14 years 8 months ago
Supporting ranking and clustering as generalized order-by and group-by
The Boolean semantics of SQL queries cannot adequately capture the "fuzzy" preferences and "soft" criteria required in non-traditional data retrieval applicati...
Chengkai Li, Min Wang, Lipyeow Lim, Haixun Wang, K...
HICSS
2003
IEEE
132views Biometrics» more  HICSS 2003»
14 years 1 months ago
Supporting Collaborative Exercises for Distance Education
At the German Distance Learning University, collaborative synchronous exercises have been recently identified by students and teachers as an important future form of collaborative...
Jörg M. Haake, Till Schümmer, Anja Haake
SIGMOD
2011
ACM
248views Database» more  SIGMOD 2011»
12 years 11 months ago
Llama: leveraging columnar storage for scalable join processing in the MapReduce framework
To achieve high reliability and scalability, most large-scale data warehouse systems have adopted the cluster-based architecture. In this paper, we propose the design of a new clu...
Yuting Lin, Divyakant Agrawal, Chun Chen, Beng Chi...
WACC
1999
ACM
14 years 23 days ago
Supporting the writing of reports in a hierarchical organization
In many hierarchical companies, reports from several independent groups must be merged to form a single, companywide report. This paper describes a process and system for creating...
Andreas Girgensohn