Middleware An Architecture for Distributed System Services 1
Philip A. Bernstein · 1993
This paper classifies different kinds of middleware, describes their properties, and explains their evolution. The goal is to provide a common vocabulary and conceptual model for understanding today's and tomorrow's distributed system software. CR Categories: D.4.7 Keywords and Phrases: distributed system, framework, information utility, interoperability, middleware, portability, system engineering, transaction processing monitor. Ó Digital Equipment Corporation 1993. All rights reserved. 1 The following trademarks are referenced in this paper: Alpha, AXP, NAS, Open/VMS, PATHWORKS are trademarks of Digital Equipment Corporation. AIX and IBM are registered trademarks of the IBM Corporation. Windows is a trademark of Microsoft Corporation. OSF is a registered trademark of the Open Software Foundation. SPARCstation is a trademark of Sun Microsystems. X/Open is a trademark of X/Open Company Ltd. 2 Author address: Digital Equipment Corporation, One Kendall Square - Building 700 Cambridge, MA 02139. Internet: [email protected] - 1 -