Design and Evaluation of Software Architecture

Document type: Licentiates
Author(s): PerOlof Bengtsson
Title: Design and Evaluation of Software Architecture
Series: Research Report
Year: 1999
Pagination: 146
ISBN: HK-R-RES--99/10
ISSN: 1103-1581
Publisher: University of Karlskrona
City: Karlskrona
Organization: Blekinge Institute of Technology
Department: Department of Software Engineering and Computer Science (Institutionen för programvaruteknik och datavetenskap)
Dept. of Software Engineering and Computer Science S-372 25 Ronneby
+46 455 780 00
Authors e-mail:
Language: English
Abstract: The challenge in software development is to develop software with the
right quality levels. The main problem is not to know if a project is
technically feasible concerning functionality, but if a solution exists that
meet the software quality requirements. It is therefore desired to get an
early indication of the qualities of the resulting software.
Software architecture is concerned with what modules are used to
compose a system and how these modules are related to each other, i.e.
the structure of system. The software architecture of a system sets the
boundaries for these qualities. Hence, to design the software architec-ture
to meet the quality requirements is to reduce the risks of not
achieving the required quality levels.
In this thesis we present the experiences from a software architecture
design project with two industry partners. Based on these we propose a
method for reengineering architectures and exemplify by an applying
the method on a real world example. The method is based on architec-ture
transformations and software quality evaluation of the architecture.
Further, we present a method for predicting software maintenance effort
from the software architecture, for use in the design and reengineering
method. The method uses change scenario profiles to describe future
changes to the system and architecture impact analysis provide knowl-edge
of the modification volume required for the realization of each sce-nario.
The results from a quasi experiment supports that groups
consisting of prepared members create better scenario profiles. Also, the
results suggest that there is a large room for variation between scenario
profiles created by individual persons.
Subject: Software Engineering\General
Keywords: Software architecture, design
Note: A full text version of this licentiate is available as Research Report 10/99
URN: urn:nbn:se:bth-00133