We present a theory of granular parthood based on qualitative cardinality and size measures. Using standard mereological relations and qualitative, contextdependent relations such ...
We stress the importance of requirements engineering (RE) for the development of large scale software in general and for GIS-applications in particular. RE analyses the problem do...
A definition of types in an information system is given from ld abstractions through data constructs, schema and definitions to physical data values. Category theory suggests tha...
We study an approach to relational databases which treats relations not as subsets of a Cartesian product but as subsets of some domain { a partially ordered space of descriptions...
This paper describes issues encountered in the design and implementation of a parallel object-oriented database system. In particular, we find that the design of a client/server ...