Concept and Architecture of a Distributed Object-Oriented Database Kernel

Abstract

In this paper we describe the distributed objectoriented database kernel OMS (Object Management System), developed at CADLAB and used within the Jessi Common Framework (JCF 1 ). This kernel provides a flexible, high-performance base for today's applications like design environments, office automation, or multimedia systems. We shortly describe the internal data model (IDM) and then turn to the main topic of the paper, the distributed architecture of the OMS, where we deal with the process model, the storage of data, caching, transactions, and the eventtrigger mechanism. CADLAB is a Cooperation of the University of Paderborn and Siemens Nixdorf Information Systems AG 1 JCF is supported by the European Community as ESPRIT project number 7364 1 Introduction In the recent years, a number of new and demanding application areas for database management systems (DBMS) have evolved (CAX 2 , Office Automation, Knowledge Representation, Multimedia etc.). For those applications, conventi..