223 search results - page 28 / 45 » Expressive and Efficient Peer-to-Peer Queries |
DMDW
2000
13 years 8 months ago
2000
View materialization is a central issue in logical design of data warehouses since it is one of the most powerful techniques to improve the response to the workload. Most approach...
PVLDB
2008
13 years 6 months ago
2008
This paper studies, for the first time, the management of type information for an important class of semi-structured data: nested DAGs (Directed Acyclic Graphs) that describe exec...
SDM
2010
SIAM
13 years 8 months ago
2010
SIAM
Large graph databases are commonly collected and analyzed in numerous domains. For reasons related to either space efficiency or for privacy protection (e.g., in the case of socia...
SIGMOD
2007
ACM
14 years 7 months ago
2007
ACM
Increasing monitoring of transactions, environmental parameters, homeland security, RFID chips and interactions of online users rapidly establishes new data sources and applicatio...
CORR
2010
Springer
13 years 6 months ago
2010
Springer
An answer to a query has a well-defined lineage expression (alternatively called how-provenance) that explains how the answer was derived. Recent work has also shown how to comput...