The story of O/sub 2/

A complete description of the O/sub 2/ system, an object-oriented database system, is presented. It has the functionality of a DBMS (persistence, disk management, sharing and query language) and of an object-oriented system (complex objects, object identity, encapsulation, typing, inheritance, overriding, extensibility, and completeness). It also includes a set of user interface generation tools and a complete programming environment. O/sub 2/ supports a multilanguage paradigm and a dual mode of operation (development and execution) and it operates on a workstation/server configuration. The system is described as seen from the programmer's point of view and as seen through the programming environment. A complete description of the implementation is given. An evaluation of the prototype performance is also given.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>