Graphical representation of rules in an object-oriented environment

In this paper a graphical representation of rules is proposed. The graphical rules are formulated based on Extended Entity-Relationship (EER) diagrams. Such diagrams are compiled into an object-oriented language code that is included as a component of the developed software system. Other components can be directly coded in an object-oriented language or generated using other graphical tools. We identify and discuss two types of graphical rules: class graphical rules and instance graphical rules. The syntax and semantics of both types of graphical rules are discussed. The graphical rules can contain object-oriented code in addition to graphical diagrams. The methods of integration of diagrams and object-oriented code are described