Architectural Prescriptions for Dependable Systems
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چکیده
In today’s highly complex software systems it’s often impossible to enforce and evaluate dependability requirements unless they are taken into account from the beginning of the development process. Retrofitting it into the system at the code level is not a satisfactory way of solving this problem. Dependability requirements cause transformations to be made to a software system’s architecture on various levels. We categorize architectural solutions to non-functional requirements according to the kinds of transformations they cause: additive, separative and integral. The first kind of solution for nonfunctional requirements just adds new components to the system; the second kind modifies only a subset of the system’s architecture; the third kind integrates the effects of the non-functional requirements throughout the entire architecture. The Preskriptor method, which we are developing to transform requirements specifications into architectural prescriptions (i.e. high-level architectural specifications), provides a framework to enforce non-functional (dependability) requirements at the architectural level.
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تاریخ انتشار 2002