Consistency management is an important requirement in many complex applications, but current programming languages and database systems provide inadequate support for it. To addre...
We present a deductive data model for concept-based query expansion. It is based abstraction levels: the conceptual, the expression and the occurrence level. Concepts and their re...
: Recursive queries are required in many object-oriented database applications. Among them we can mention Bill-Of-Material (BOM), stock market dependencies, various kinds of networ...
Tomasz Pieciukiewicz, Krzysztof Stencel, Kazimierz...
The ubiquity of Windows-based desktop environments has not been matched by a corresponding emergence of tools supporting the Unix tool composition paradigm. Outwit is a suite of t...
High assurance security is di cult to achieve in distributed computer systems and databases because of their complexity, non-determinism and inherent heterogeneity. The practical ...