Download Aligning Modern Business Processes and Legacy Systems: A by Willem-Jan van den Heuvel PDF

By Willem-Jan van den Heuvel

Dispensed company part computing—the assembling of industrial elements into digital company approaches, which have interaction through the Internet—caters to a brand new breed of company structures which are versatile, rather effortless to take care of and improve to house new enterprise techniques, and comparatively uncomplicated to combine with different company structures. businesses with unwieldy, huge, and heterogeneous inherited details systems—known as legacy systems—find it tremendous tough to align their outdated structures with novel enterprise techniques. Legacy structures aren't basically tightly intertwined with latest enterprise tactics and strategies but in addition have a brittle structure after years of ad-hoc fixes and supply constrained openness to different structures. during this booklet, Willem-Jan van den Heuvel offers a methodological framework that provides pragmatic innovations for aligning component-based enterprise approaches and legacy structures.

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3 Replacement Replacement implies acquiring or constructing a new application and substituting it for a legacy system. , enterprise resource planning solutions), in-house development, or using a mixture of these development practices may realize this strategy. For example, Body Shop International decommissioned its legacy systems in 2004 in favor of one shared SAP for Retailing solution. Despite the fact that the replacement strategy may at first sight seem very attractive to management because it holds the promise of the newest technologies and leads to a fast discontinuation of redundant applications and repository systems, practice has taught that this strategy bears large risks and many unpredictable pitfalls.

FSMs may be applied for modeling both provided and required protocols. Abstractly speaking, input symbols (strings that can trigger changes to a state) are derived from signature names. If, after having executed a signature call, the set of executable services (signatures) of the component changes, the FSM changes its state. In other words, each state of the FSM reflects the set of callable services. For example, for a product catalog, there are two sets of callable services: {open} and {read, find, close}.

Thus, transformation involves examining and reconstituting an information system. Transformation may be realized with a combination of several techniques, including source code translation, program and data restructuring, reverse engineering, and retargeting. Source code translation involves transforming old code into a new version that is written in a contemporary programming language or a newer version of the same language. For example, systems may be converted from COBOL-II into Object-Oriented COBOL (Levey 1996).

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