Design and Implementation of Integrated Software Maintenance Environment

I hereby declare that I am the sole author of this thesis. I authorize the University of Waterloo to lend this thesis to other institutions or individ-uals for the purpose of scholarly research. I further authorize the University of Waterloo to reproduce this thesis by photocopying or by other means, in total or in part, at the request of other institutions or individuals for the purpose of scholarly research. ii The University of Waterloo requires the signatures of all persons using or photocopying this thesis. Please sign below, and give address and date. iii Software development methods and techniques have evolved greatly over the past few decades in terms of new programming paradigms, languages and support tools. This evolution enables the specification, design, implementation, and testing of large com-plex software systems. However, the existence of such large systems introduces the nee