Citation
Fernández Briones, Javier and Miguel Cabello, Miguel Angel de and Silva Gallino, Juan Pedro and Alonso Muñoz, Alejandro Antonio
(2010).
Analysis of Quality Dependencies in the Composition of Software Architectures.
In: "13th Jornadas de Tiempo Real", 05/02/2010 - 06/05/2010, Granada, España. ISBN 978-84-92757-51-0.
Abstract
A dependable system has to meet some quality criteria in order to provide certain reliance on its operation. The quality of a system depends on the complex composition of the quality of its subsystems. Specications of non-functional properties are commonly used to describe provided quality, required quality, resource usage and resource availability. Enclosing these specifications along with architectural models allows performing preliminary quality assessments (design-phase analysis). We allow configuration choices for quality specifications to represent design choices, deployment choices, or component adaptability. We focus on a composition study that answers to: is it possible to meet system and subsystem requirements given provided qualities? and, which configuration allows satisfying the requirements? The contributions of this work are:
i) to formalize the composition based on quality levels and constraints,
ii) to analyze existing quality dependencies in such a composition,
iii) to show how we represent and evaluate dependencies in a model driven environment.