events are not detected by SAMOS, but users/applications have to notify the system about their occurrence by issuing an explicit raise operation. 2.2 Composite events The kinds of primitive events described above correspond to elementary occurrences and are not adequate for handling events

This article describes a new approach to the unit testing of object-oriented programs, a set of tools based on this approach, and two case studies. In this approach, each test case consists of a tuple of sequences of messages, along with tags indicating whether these sequences should put objects

closed model, a dynamic theory of production must account for changing stocks of basic and applied science, as sectoral aspects of investment, which is done in The Process of Economic Growth, especially pp. 22-25. 2 Ibid. pp. 96-i03.

type abstraction. Object-oriented programming and abstract data types can also be viewed as complementary implementation techniques: objects are centered around the constructors of a data abstraction, while abstract data types are organized around the operations. These differences have consequences

The goal of this work is to integrate in a general framework the different query optimization techniques that have been proposed in the object-oriented context. As a first step, we focus essentially on the logical aspect of query optimization. In this paper, we propose a formalism (i) that unifies

of SHORE is already operational, and we expect a release of Version 1 in mid-1994. 1 Introduction SHORE (Scalable Heterogeneous Object REpository) is a new persistent object system under development at the University of Wisconsin that represents a merger of object-oriented database (OODB) and file system

. We show how an object-oriented approach easily accommodates this type of architecture. The design principles are exemplified by code examples in Common Lisp. Taken together these code examples constitute an operational retrieval system. The design principles and protocols implemented have also been

Abstract. The Plurix project implements an object-oriented Operating System (OS) for PC clusters. Communication is achieved via shared objects in a Distributed Shared Memory (DSM)- using restartable transactions and an optimistic synchronization scheme to guarantee memory consistency. We believe

while working on the design of an explanation system, and in particular while trying to write operators for an explanation planner. We experienced this problem in three different projects, at the university of Orsay, France, while working on the theoretical aspects of explanation (the domain

-post multicriterion evaluation. In this paper we present a computational framework for the integration of modeling and ex-post evaluation by means of object-orientation. Advantages are a simpler, less ambiguous software data model; concurrent computation of physical and multicriterion aspects of a natural resource