The Butterfly Methodology: a gateway-free approach for migrating legacy information systems

Proceedings. Third IEEE International Conference on Engineering of Complex Computer Systems (Cat. No.97TB100168) Pub Date : 1997-09-08 DOI:10.1109/ICECCS.1997.622311

Bing Wu, D. Lawless, J. Bisbal, R. Richardson, J. Grimson, V. Wade, D. O'Sullivan

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引用次数: 96

Abstract

The problems posed by mission-critical legacy systems-e.g., brittleness, inflexibility, isolation, non-extensibility, lack of openness-are well known, but practical solutions have been slow to emerge. Generally, organisations attempt to keep their legacy systems operational, while developing mechanisms which allow the legacy systems to interoperate with new, modern systems which provide additional functionality. The most mature approach employs gateways to provide this interoperability. However, gateways introduce considerable complexity in their attempt to maintain consistency between the legacy and target systems. This paper presents an innovative gateway-free approach to migrating legacy information systems in a mission-critical environment: the Butterfly Methodology. The fundamental premise of this methodology is to question the need for the parallel operation of the legacy and target systems during migration.

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蝴蝶方法论:用于迁移遗留信息系统的无网关方法

关键任务遗留系统(例如:这些都是众所周知的问题，比如脆弱、不灵活、孤立、不可扩展、缺乏开放性等，但是实际的解决方案却迟迟没有出现。通常，组织试图保持其遗留系统的可操作性，同时开发允许遗留系统与提供附加功能的新现代系统互操作的机制。最成熟的方法是使用网关来提供这种互操作性。然而，网关在试图维护遗留系统和目标系统之间的一致性时引入了相当大的复杂性。本文提出了一种在关键任务环境中迁移遗留信息系统的无网关创新方法:蝴蝶方法。这种方法的基本前提是质疑在迁移期间遗留系统和目标系统是否需要并行操作。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings. Third IEEE International Conference on Engineering of Complex Computer Systems (Cat. No.97TB100168)

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