Object Algebra and Views for Multi-Objectbases

This paper addresses the problem of de ning views that span several objectbases. Views are expressed in terms of an object algebra. We are interested in the degrees of coupling and in the degrees of integrity maintained through multi-objectbase views. A key issue is the problemof global object identity. Each local system has its private object identi ers (OIDs) to represent objects. Globally, however, we need other mechanisms to uniquely refer to objects. We propose a technique that is based on the de nition of (updatable) views: Queries to other objectbases are used as a referencing mechanism. The mechanism is useful as a formal basis for (partial or complete) schema integration in multi-objectbase systems.

• Type: Conference
• Year: 1992
• Where: OODBS
• Authors: Marc H. Scholl, Hans-Jörg Schek, Markus Tresch
• Keywords: Database, Object Algebra, Object Identi Ers, OODBS 1992, Problemof Global Object