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On the Assessment of Preservability: Method and Application

This paper aims to establish engineering processes and methods for the assessment and deployment of digitally preservable systems by identifying a method for assessing the preservability capabilities of systems. The work done on this was based on the hypothesis that preservability consists of a set of systems capabilities that originates from a combination of system/software capabilities as defined in ISO 25010:2010. Based on that hypothesis, it was verified that such quality characteristics influence the preservability of systems. That influence is relative, since it depends on the specific scenario being addressed and on the concerns and requirements of the stakeholders of the system, as different qualities of a system might assume different degrees of importance along time. With those principles taken into account, this work developed an assessment method for assessing the preservability of systems that can be adapted to each scenario being analyzed. For demonstrating the application of the method, an example assessment was performed on a specific scenario, which resulted on the revelation that preservability of the system in focus on that particular case can be greatly improved.