6829 search results - page 1242 / 1366 » Quantitative Generalizations of Languages |
SIGMOD
2008
ACM
14 years 10 months ago
2008
ACM
While database management systems offer a comprehensive solution to data storage, they require deep knowledge of the schema, as well as the data manipulation language, in order to...
SIGMOD
2006
ACM
14 years 10 months ago
2006
ACM
We study the problem of finding efficient equivalent viewbased rewritings of relational queries, focusing on query optimization using materialized views under the assumption that ...
EDBT
2008
ACM
14 years 10 months ago
2008
ACM
Data exchange is the problem of transforming data structured under a schema (called source) into data structured under a different schema (called target). The emphasis of data exc...
WWW
2010
ACM
14 years 5 months ago
2010
ACM
Web crawlers are increasingly used for focused tasks such as the extraction of data from Wikipedia or the analysis of social networks like last.fm. In these cases, pages are far m...
SAC
2010
ACM
14 years 5 months ago
2010
ACM
The aim of this short paper is to present a general method of using background knowledge to impose constraints in conceptual clustering of object-attribute relational data. The pr...