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Please use this identifier to cite or link to this item: http://hdl.handle.net/2262/27040

Title: The Butterfly methodology: a Gateway-free approach for migrating legacy information systems
Author: WADE, VINCENT PATRICK
Author's Homepage: http://people.tcd.ie/vwade
Keywords: Computer Science
Issue Date: 1997
Publisher: IEEE
Citation: Wu, D. Lawless, J. Bisbal, J. Grimson V. Wade and R. Richardson ‘The Butterfly methodology: a Gateway-free approach for migrating legacy information systems’ in 3rd IEEE Conference on Engineering of Complex Computer Systems (ICECCS 97), 8th -12th September, 1997, pp 200-205
Abstract: The problems posed by mission-critical legacy systems - e.g., brittleness, inflexibility, isolation, nonextensibility, 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, modem 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 missioncritical environment : the ButtelJly Methodology. The fundamental premise of this methodology is to question the need for the parallel operation of the legacy and target systems during migration.
Description: PUBLISHED
URI: http://hdl.handle.net/2262/27040
Appears in Collections:Computer Science (Scholarly Publications)

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