COBOL Software Modernization (Computer Engineering) by Franck Barbier, Jean-Luc Recoussine

By Franck Barbier, Jean-Luc Recoussine

Nowadays, billions of strains of code are within the COBOL programming language. This ebook is an research, a prognosis, a method, a MDD approach and a device to remodel legacy COBOL into modernized functions that conform to net computing, Service-Oriented structure (SOA) and the Cloud.  It serves as a blueprint for these in command of discovering ideas to this huge challenge.

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E. moving the code from mainframes to platforms with distribution capabilities or, more frequently, adopting the Web three-tier application style. NET. In fact, when the initial code leads to no significant restructuring when observed in the new target (language and/or platform), this is “lightweight”. In this case, most data structures remain as is. Unfortunately, the output code remains cryptic; it is thus still subject to sizeable long-term maintenance costs. In this line of reasoning, migration to object-oriented COBOL might be a ticking time bomb if existing data structures are transformed into classes in a one-to-one mapping approach.

Bus schedules fit to libraries’ working hours, children’s entertainment events, etc. In such a context, town citizens do not care about librarian and bus driver salaries, fuel in buses, libraries’ heating, etc. In this line of reasoning, it has always been tempting, even healthy, to isolate information from its physical implementation. This approach aims at better considering information-as-a-service. Instinctively, information consumers do not pay attention to computing environments being hardware or software.

1. Re-engineering in action Nowadays, reverse and forward engineering have a consensus in terms of both definition and practice. To that extent, there exists a plethora of re-engineering methods and tools. info 34 COBOL Software Modernization there is an assumption that the legacy code is the primary matter. In this context, reverse engineering always amounts to producing a syntactical code modeling, which is an instance of a Backus-Naur Form (BNF). A BNF is a metalanguage, a set of (meta)-words and grammar rules.

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