Open-system environment reference model: Difference between revisions

Revision as of 00:55, 4 January 2013

Revision as of 01:49, 4 January 2013

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== History ==

The development of the open-system environment reference model started early 1990s as refinement of the [[POSIX]] (Portable Operating System Interface) standard. POSIX is a standard for maintaining compatibility between operating systems, and addresses interoperation for communications, computing, and entertainment infrastructure. It's developed started late 1980s by the POSIX Working Group 1003.0 of the [[Institute of Electrical and Electronics Engineers]] (IEEE).<ref name="Hun95"/> A profile by the [[NIST]] (1996) identifies some standards that can be adapted to the identified OSE services. <ref name="ACF">[http://www.acf.hhs.gov/nhsitrc/it_planning/pdf/consolidated_definitions.pdf Consolidated Definitions and References] at acf.hhs.gov. Accessed 12 Dec 2008.</ref>

In the 1990s the [[NIST]] has hosted workshops and conducts other support activities to assist users in addressing open systems requirements, preparing for the use of new technology, and identifying the international, national, industry and other open specifications that are available for building open systems frameworks, such as the government's applications portability profile for the open-system environment.

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== Applications ==

Basically, the open-system environment model is a basic building block of several technical reference models and technical architecture. A [[technical architecture]] identifies and describes the types of applications, platforms, and external entities; their interfaces; and their services; as well as the context within which the entities interoperate. A technical architecture is based on a technical reference model (TRM) and the selected standards that further describe the TRM elements (the profile). The technical architecture is the basis for selecting and implementing the infrastructure to establish the target architecture.<ref name="ACF">[http://www.acf.hhs.gov/nhsitrc/it_planning/pdf/consolidated_definitions.pdf Consolidated Definitions and References] at acf.hhs.gov. Accessed 12 Dec 2008.</ref>

A [[technical reference model]] can be defined as a taxonomy of services arranged according to a conceptual model, such as the Open System Environment model. The enumerated services are specific to those needed to support the technology computing style (e.g., distributed object computing) and the industry/business application needs (e.g., Human Services, financial). <ref name="ACF"/>