Article,
Data oriented and Process oriented Strategies for Legacy Information Systems Reengineering
ACEEE International Journal on Information Technology, 2 (1): 5 (March 2012)
Abstract
The legacy information systems often implement
manual data updates for information obtained from external
systems. The manual updates are cumbersome, error prone,
and expensive. The legacy systems miss interfaces to external
systems that could be used for automatic updates of system
data. Moreover, the legacy systems also lack extensions to
supplier or customer systems that are essential for creating
supply chain relationships. This paper explores the data
oriented and process oriented models of legacy systems, and
discusses the details of systems development and evolution
models mainly aiming at an ongoing reengineering of legacy
systems. This paper proposes simple strategies for creating
interfaces to external systems for automatic updates of data,
and for adapting to the process evolution that requires a legacy
information system to extend its communications with
external systems that could help in creating successful supply
chain relationships. These strategies can reshape a legacy
system to be reengineered into a new enterprise information
system whether the legacy system is of a data oriented model,
or of a process oriented model.
