DMCA
zur Erlangung des Grades “Doktor der Naturwissenschaften” (1999)
BibTeX
@MISC{Arbeit99zurerlangung,
author = {Schriftliche Arbeit and Im Fachbereich Mathematik-informatik and Der Universität Paderborn and Universität Paderborn},
title = {zur Erlangung des Grades “Doktor der Naturwissenschaften”},
year = {1999}
}
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Abstract
This dissertation tackles one of the most urgent problems in today’s information technology, namely the renovation and migration of legacy information systems to modern platforms and net-centric architectures. In this context, several methods, tools, and processes have been proposed to support reengineering and modernizations of legacy database applications. This can be a complex task because many legacy databases have grown over several generations of programmers and lack a sufficient documentation. Computer-aided reengineering methods and processes have a great potential to reduce the complexity and risks involved in database design recovery and migration projects. Still, current reengineering tools are hardly adopted for practical problems in industry because they often make idealistic assumptions about the structure of legacy systems and the characteristics of reengineering processes. The goal of this thesis is to provide concepts and techniques to overcome these severe limitations. In particular, our focus is on developing mechanisms to manage uncertainty and inconsistency in computer-aided databases reengineering processes. In practice, uncertain knowledge plays an important role in activities aiming to recover conceptual design documents for large idiosyncratic implementation structures. This fact is
Keyphrases
zur erlangung grade doktor der naturwissenschaften important role conceptual design document migration project several generation legacy system net-centric architecture severe limitation complex task current reengineering tool idealistic assumption sufficient documentation uncertain knowledge legacy information system practical problem several method many legacy database information technology computer-aided database legacy database application large idiosyncratic implementation structure urgent problem great potential database design recovery modern platform
