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Open Archival Information System : ウィキペディア英語版
Open Archival Information System
An Open Archival Information System (or OAIS) is an archive, consisting of an organization of people and systems, that has accepted the responsibility to preserve information and make it available for a Designated Community.
The term OAIS also refers, by extension, to the ISO OAIS Reference Model for ''an'' OAIS. This reference model is defined by recommendation CCSDS 650.0-B-1 of the Consultative Committee for Space Data Systems;〔(CCSDS.org - CCSDS Recommendations and Reports - All Publications )〕 this text is identical to (ISO 14721:2003 ) which is superseded by (ISO 14721:2012 ). The CCSDS's purview is space agencies, but the OAIS model it developed has proved useful to a wide variety of other organizations and institutions with digital archiving needs.
The information being maintained has been deemed to need "long term preservation", even if the OAIS itself is not permanent. "Long term" is long enough to be concerned with the impacts of changing technologies, including support for new media and data formats, or with a changing user community. "Long term" may extend indefinitely. In this reference model there is a particular focus on digital information, both as the primary forms of information held and as supporting information for both digitally and physically archived materials. Therefore, the model accommodates information that is inherently non-digital (e.g., a physical sample), but the modeling and preservation of such information is not addressed in detail. As strictly a conceptual framework, the OAIS model does not require the use of any particular computing platform, system environment, system design paradigm, system development methodology, database management system, database design paradigm, data definition language, command language, system interface, user interface, technology, or media for an archive to be compliant. Its aim is to set the standard for the activities that are involved in preserving a digital archive rather than the method for carrying out those activities.
The acronym OAIS should not be confused with OAI, which is the Open Archives Initiative.
==The reference model==

The reference model:
* provides a framework for the understanding and increased awareness of archival concepts needed for long term digital information preservation and access.
* provides the concepts needed by non-archival organizations to be effective participants in the preservation process.
* provides a framework, including terminology and concepts, for describing and comparing architectures and operations of existing and future archives.
* provides a framework for describing and comparing different long term preservation strategies and techniques.
* provides a basis for comparing the data models of digital information preserved by Archives and for discussing how data models and the underlying information may change over time.
* provides a foundation that may be expanded by other efforts to cover long-term preservation of information that is ''not'' in digital form (e.g., physical media and physical samples).
* expands consensus on the elements and processes for long-term digital information preservation and access, and promotes a larger market which vendors can support.
* guides the identification and production of OAIS-related standards.〔Consultative Committee for Space Data Systems. (2012). (Reference Model for an Open Archival Information System (OAIS) ). Washington, DC: CCSDS Secretariat, p. 1-1.〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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