Evolution-aware Sample Clauses

Evolution-aware. Embracing the Long-term Perspective‌ Since we are targeting integrated information and preservation management systems, we are operating in a long-lived context, covering a time perspective of several decades. Even things that are considered relatively stable in the current setting of an information system - such as the type or class of content management system in use - will change over time [Afrasiabi Rad et al., 2014]. For sustainable operation it is important to be prepared for such changes. It is one of the core ideas of the ForgetIT approach to keep the important information accessible and usable even in case of large changes in the setting and context of operation. For incorporating evolution-awareness into our Reference Model, several types of evolution with different impacts on the reference model have to be considered: 1. Changes in conceptual model of the Active System: this could be due to, for example, changes in the organizational ontology underlying the content structuring as well as processes described in the content. This creates a semantic gap between the archived content (relying on the old implicit or explicit ontology) and the active content (structure by new ontology). This gap has to be bridged, at latest when preserved content is brought back into the active environment, in order to enable correct interpretation of the re-activated content; 2. Active system evolution and exchange (Migration): the used Active System might be subject to major changes or might even be completely replaced by an- other system, if we look at time frames of several decades. In spite of such changes the content should stay accessible and usable [Afrasiabi Rad et al., 2014]; 3. DPS evolution or exchange: in the same way, the chosen DPS might evolve or could be exchanged over time. This implies the migration of content into a new DPS [Xxxxxˇ, 2013]. In the ideal case this should have as little impact on the Active System as possible [Afrasiabi Rad et al., 2014]; 4. Change in best-practices and technology: formats as well as employed tech- nologies might become obsolete over time. This requires the identification of such changes as well as adequate actions to react to those changes, such as format transformations. The last item in the list above is a classical issue of any DPS. It is, therefore, not covered in too much detail in our Reference Model, since we focus on the things that go beyond current best practices in digital preservation.