Several requirements for algebra suitable for ecient cost-based optimization are presented. It is shown that known XML algebras do not fully satisfy this requirements. A new alge...
In this paper a data warehouse framework that supports data warehouse evolution is presented. The framework is able to handle not only changes in data sources, but also direct cha...
Effective querying and managing of temporal databases represent an unanswered challenge to the modern research community. In this paper, we introduce a temporal preprocessor that ...