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SIGMOD
1998
ACM
14 years 2 months ago
1998
ACM
The Relational On-Line Analytical Processing (ROLAP) is emerging as thedominant approach in data warehousing with decision support applications. In order to enhance query performa...
EDBT
2009
ACM
14 years 4 months ago
2009
ACM
Materialized views (MV) can significantly improve the query performance of relational databases. In this paper, we consider MVs to optimize complex scenarios where many heterogen...
DEXAW
2002
IEEE
14 years 2 months ago
2002
IEEE
In collaborative e-commerce environments, interoperation is a prerequisite for data warehouses that are physically scattered along the value chain. Adopting system and information...
EDBTW
2006
Springer
13 years 12 months ago
2006
Springer
Abstract. Since XML is used as a storage format in an increasing number of applications, security has become an important issue in XML databases. One aspect of security is restrict...
ICDE
2007
IEEE
14 years 11 months ago
2007
IEEE
We study the problem of answering queries posed on virtual views of XML documents, a problem commonly encountered when enforcing XML access control and integrating data. We approa...