726 search results - page 88 / 146 » Extended Query Answering Using Integrity Rules |
VLDB
2007
ACM
14 years 9 months ago
2007
ACM
The performance of XML database queries can be greatly enhanced by rewriting them using materialized views. We study the problem of rewriting a query using materialized views, whe...
ECIR
2009
Springer
13 years 6 months ago
2009
Springer
Abstract. The structural heterogeneity and complexity of XML repositories makes query formulation challenging for users who have little knowledge of XML. To assist its users, an XM...
ICDE
2003
IEEE
14 years 10 months ago
2003
IEEE
The problem of statistics and aggregate maintenance over data streams has gained popularity in recent years especially in telecommunications network monitoring, trend-related anal...
DBPL
1993
Springer
14 years 27 days ago
1993
Springer
A frequent dilemma in the design of a database programming language is the choice between a language with a rich set of tailored notations for schema definitions, query expression...
SIGMOD
2003
ACM
14 years 9 months ago
2003
ACM
Literature on information integration across databases tacitly assumes that the data in each database can be revealed to the other databases. However, there is an increasing need ...