Reuse of already developed object-oriented software components is reduced when software is written in diierent object-oriented languages, or when it is not easy to relocate the software components from one machine to another machine. Software development in a distributed and heterogeneous environment is a solution to this problem. Several common object models have been deened for software devel...

Object-oriented design plays a pivotal role in software development because it determines the structure of the software solution. Once the design has been implemented, it is difficult and expensive to change. Therefore the design should be good from the start. Metrics can help to evaluate and improve the quality of a design. Many metrics of object-oriented design have been proposed. Unfortunate...

Behavior of geographic objects holds a critical role in spatial databases. This, along with objects’ position and space-varying attributes, form a minimal set of concepts sufficient to capture spatial peculiarities in terms of the object-oriented rational. We present the semantics and the graphical notation of a prototypical object-oriented model for the conceptual design of spatial databases: ...