Implementing an Object Model on Top of Commercial Database Systems (Extended Abstract)

) Markus Tresch and Marc H. Scholl Department of Computer Science, Information Systems -- Databases ETH Zurich, CH-8092 Zurich, Switzerland E-mail: tresch@inf.ethz.ch 1 Introduction The aim of the COCOON 1 project is to investigate the design of an object-oriented data model with main emphasis on efficient implementation of queries and updates. While the nested relational kernel of DASDBS is the target physical storage system for COCOON, the model is also implemented on top of commercial database systems, as first prototypes and to analyze feasibility and compare performance. This report summarizes the experiences of implementing the COCOON object model and its object algebra COOL on top of two commercially available database systems: a relational one (Oracle) and an object-oriented one (ONTOS). We have chosen a relational one, because the state of the art database systems for productive use are still relational, and an object-oriented one, because a couple of companies started to ..