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VLDB
2005
ACM
14 years 1 months ago
2005
ACM
The interaction between recursion in XPATH and recursion in DTDs makes it challenging to answer XPATH queries on XML data that is stored in an RDBMS via schema-based shredding. We...
VLDB
2005
ACM
14 years 1 months ago
2005
ACM
The largest databases in use today are so large that answering a query exactly can take minutes, hours, or even days. One way to address this problem is to make use of approximati...
SIGMOD
2005
ACM
14 years 2 months ago
2005
ACM
One of the most powerful features of SQL is the use of nested queries. Most research work on the optimization of nested queries focuses on aggregate subqueries. However, the solut...
SIGMOD
2005
ACM
14 years 8 months ago
2005
ACM
This paper introduces RankSQL, a system that provides a systematic and principled framework to support efficient evaluations of ranking (top-k) queries in relational database syst...
CIMCA
2005
IEEE
14 years 2 months ago
2005
IEEE
In Internet marketing, Web audience analysis is essential to understanding the visitors’ needs. However, the existing analysis tools fail to deliver summarized and conceptual me...