Information integration systems have to cope with the different and limited query interfaces of the underlying information sources. First, the integration systems need description...
We present an improved data model that reflects the whole VLSI design process including bottom-up and topdown design phases. The kernel of the model is a static version concept th...
Scientists and engineers must ensure that physical equations are dimensionally consistent, but existing programming languages treat all numeric values as dimensionless. This paper ...
Constructive negation has been proved to be a valid alternative to negation as failure, especially when negation is required to have, in a sense, an `active' role. In this pa...
Business rules are an important element of information systems. The notion business rule encompasses different phenomena; therefore, some classification criteria are presented and...
Holger Herbst, Gerhard Knolmayer, Thomas Myrach, M...