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SIGMOD
2011
ACM
248views Database» more  SIGMOD 2011»
13 years 19 days 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...
CIKM
2011
Springer
12 years 9 months ago
Estimating selectivity for joined RDF triple patterns
A fundamental problem related to RDF query processing is selectivity estimation, which is crucial to query optimization for determining a join order of RDF triple patterns. In thi...
Hai Huang 0003, Chengfei Liu
DOLAP
2005
ACM
13 years 11 months ago
Optimizing the incremental maintenance of multiple join views
Materialized views are nowadays commonly used in the data warehouse environment. Materialized views need to be updated when data sources change. Since the update of the views may ...
Ki Yong Lee, Myoung-Ho Kim
GVD
2003
151views Database» more  GVD 2003»
13 years 11 months ago
Bridging the GAP Between Relational and Native XML Storage with Staircase Join
Several mapping schemes have recently been proposed to store XML data in relational tables. Relational database systems are readily available and can handle vast amounts of data v...
Jens Teubner, Torsten Grust, Maurice van Keulen
IS
2008
13 years 9 months ago
Joining the results of heterogeneous search engines
In recent years, while search engines have become more and more powerful, several specialized search engines have been developed for different domains (e.g. library services, serv...
Daniele Braga, Alessandro Campi, Stefano Ceri, Ale...