Fernando Velez

O2, an object-oriented data model

The <italic>Altair</italic> group is currently designing an object-oriented data base system called O<subscrpt>2</subscrpt>. This paper presents a formal description of the object-oriented data model of this system. It proposes a type system defined in the framework of a set-and-tuple data model. It models the well known inheritance mechanism and enforces strong typing.

The design and implementation of O2, an object-oriented database system

This paper describes the design and implementation of the first version of the O2 object-oriented database system. The Altair project is currently designing and implementing a complete environment for developing data intensive applications. As a first step, we have implemented a quick prototype of an object-oriented DBMS. We report here on this implementation. The first part of the paper describes the system interface as seen by the application programmer, the second part describes the architecture of the system.

Modularity and tuning mechanisms in the O2 System

The O2 System is a commercial Object-Oriented Database Management System with a complete development environment and a set of user interface tools. In this presentation, we focus on the modularity and application tuning facilities of the system.

O2, an Object-Oriented Data Model

The Altair group is currently designing an object-oriented data base system called O2. This paper presents a formal description of the object-oriented data model of the O2 system. A prototype of the O2 system is currently running on Sun workstations with a Unix system.