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【目的】研究在长期保存实践中如何应用不变性检查保障数字对象持久不变,指导可信赖保存系统研发工作。【方法】通过分析保存领域的相关标准规范,对比相关工具,总结保存实践,按照保存生命周期流程进行综合分析。【结果】在长期保存的整个生命周期的关键节点上(摄入、生成AIP、存储、分发),可根据实际需求采用不同的不变性检查方法和策略实施不变性检查,同时总结不变性信息的存储方式和不变性功能的构建方式。【结论】有利于帮助保存系统的开发人员了解和掌握不变性检查的方法和策略,从而在实践中因地制宜地开发不变性检查功能和策略,有效保障数字对象的持久不变性。
【Objective】 To study how to apply invariance checking in long-term preservation to ensure the lasting of digital objects and guide the development of trusted preservation system. 【Method】 By analyzing the relevant standards in the field of conservation, comparing the relevant tools, summarizing the conservation practices and conducting a comprehensive analysis according to the preservation life cycle process. 【Result】 In the long-term preservation of the key nodes (intake, generation of AIP, storage, distribution) at the key nodes of the whole life cycle, different immutability test methods and strategies can be used to implement invariance checking according to the actual needs, meanwhile, Storage and immutable features of the way to build. 【Conclusion】 It is helpful to the developers of save system to understand and master the methods and strategies of invariance checking, so as to develop the invariance checking function and strategy according to local conditions in practice, which can effectively ensure the permanence of digital objects.