$CLIP^{++}$: an object-oriented extension of a relational DBMS

Abstract

In this paper the $Clip^{++}$ system is presented. It is an object-oriented extension of the Relational DBMS Clipper 5.0. $Clip^{++}$ tries to upgrade one of the most widely spread Relational DMBS with some object-oriented features. It has the basic characteristics of an object-oriented system: classes and obejcts can be defined; class hierarchy, inheritance and polimorphism are supported. On the other hand, the relational features of the DBMS Clipper 5.0 are used to achieve the object persistency.