Technologies for finding impacts of schema changes on applications Karahasanovic, AmelaHinze, AnnikaHerden, OlafDoctoral Consortium of the Conference on Advanced Information Systems Engineering <8, 2001, Interlaken>
Technologies for finding impacts of schema changes on applications
Freie Universität Berlin, Fachbereich Mathematik und Informatik : Ser. B, Informatik ; 01,04
004 Datenverarbeitung; Informatik
Research in schema evolution has been driven by the need for more effective
software development and maintenance. Finding impacts of schema
changes on the applications and presenting them in an appropriate way are particularly
challenging. We have developed a tool that finds impacts of schema
changes on applications in object-oriented systems. This tool displays components
(packages, classes, interfaces, methods and fields) of a database application
system as a graph. Components potentially affected by a change are
indicated by changing the shape of the boxes representing those components.
We have evaluated the tool by own judgement on a real-life application and
by a controlled student experiment. Our results indicate that identifying impacts
at the level of fields and methods can reduce the time needed to conduct
schema changes and reduce the number of errors compared with identifying
impacts at the level of classes. Moreover, the subjects of the experiment appreciated
the idea of visualizing the impacts of schema changes.
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