This paper uses the persistent object system PCLOS to survey some problems and bene ts of object persistence. The system is analyzed along several relevant dimensions. PCLOS provi...
This paper presents a denotational model of inheritance. The model is based on an intuitive motivation of inheritance as a mechanism for deriving modified versions of recursive d...
The notions of class, subclass and virtual procedure are fairly well understood and recognized as some of the key concepts in object-oriented programming. The possibility of modif...