nestor criteria : Catalogue of Criteria for Trusted Digital Repositories

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nestor - Network of Expertise in long-term STORage Working Group “Trusted Repositories – Certification” "Long-term" here means lasting beyond technological changes (to hard and software) and also any changes to the designated community (e.g. for future generations, indefinitely). Ingest: An OAIS functional entity consisting of the functions and processes which receive the transfer packages from the producer/supplier, transform them into archival packages and incorporate them into the archive. Integrity: 1. Completeness of the digital objects, 2. Exclusion of unintended modifications as defined in the preservation rules. The yardsticks for integrity are the characteristics of a digital object which are defined as worthy of preservation. Metadata can be created at different times in the lifecycle of digital objects (during production, archiving or provision for use etc.). Metadata: Data representing information about other data by describing e.g. its content, structure, composition, handling, origin etc. The term is used primarily in the digital field (e.g. Dublin Core Metadata), although e.g. title listings in library catalogues, archive catalogue entries etc. can also be regarded as metadata. Metadata should be seen as parts of the conceptual units of transfer, archival and access packages. OAIS: Reference model (ISO 14721:2003) for DRs which describes the core processes of a DR (functional entities) and provides an information model. Preservation planning (long-term preservation measures): The totality of all methods specifically used to archive digital objects indefinitely and to make them available over a sustained period. This includes methods for the physical preservation of the data and also the use of migration and emulation techniques to change the archived objects or their environments to guarantee their future use. Producer: People or client systems who/which transfer digital objects to the DR for long-term preservation. They are not necessarily the originators; they could also be the suppliers of the digital objects. Quality: The quality of a DR is the degree to which a number of inherent characterising properties fulfil the specified requirements. Requirements here are prerequisites or expectations which are laid down and which are generally taken for granted or compulsory (following ISO 9000:2000). Representation information: Information which is necessary to interpret digital data (e.g. the file format of a file). 42 nestor criteria, Version 2, 2009
nestor - Network of Expertise in long-term STORage Working Group “Trusted Repositories – Certification” Submission Information Package (SIP): Information unit submitted by the producer to the DR. The content data may already be supplemented with metadata. Trustworthiness: Trustworthiness is the capacity of a system to operate in accordance with its objectives and specifications (i.e. it does exactly what it claims to do). The trustworthiness of a DR can be tested and assessed on the basis of a criteria catalogue. Users: People or client systems who/which interact with the DR to find and use the information represented by the digital packages. nestor criteria, Version 2, 2009 43
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nestor criteria : Catalogue of Criteria for Trusted Digital Repositories

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