Open-system environment reference model: Difference between revisions

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{{Short description|Reference model for enterprise architecture}}

[[File:Open System Environment Reference Model.jpg|thumb|320px|Open System Environment Reference Model, 1995.<ref name="Hun95"> Joseph I. Hungate et al. (1995) "[http://nvl.nist.gov/pub/nistpubs/jres/100/6/j16ce-hun.pdf Conference Report: Application Portability Profile and Open System Environment Users Forum Gaithersburg, MD May 9–10, 1995]" in: ''Journal of Research of the National Institute of Standards and Technology''. Volume 100, Number 6, November–December 1995</ref>]]

'''Open-system environment (OSE) reference model (RM)''' or ''OSE reference model'' (OSE/RM) is a 1990 [[reference model]] for [[enterprise architecture]]. It provides a [[software framework|framework]] for describing [[Open system (computing)|open system]] concepts and defining a lexicon of terms, that can be agreed upon generally by all interested parties.<ref name="Hun95"/>

This reference model is meant as an environment model, complementary to the [[POSIX]] architecture for open systems. It offers an extensible framework that allows services, interfaces, protocols, and supporting data formats to be defined in terms of nonproprietary specifications that evolve through open (public), consensus-based forums.<ref>''ACM Sigsoft (1993) 15th International Conference on Software Engineering, May 17-21, 1993''. p.349</ref> This reference model served in the 1990s as a basic building block of several technical reference models and technical architectures.

In 1996 this reference model was standardized in the [[List_of_International_Organization_for_Standardization_standards#ISO_10000.E2.80.93ISO_14999|ISO/IEC TR 14252]] titled "Information technology -- Guide to the POSIX Open System Environment (OSE)".<ref>Wolfgang Kresse, Kian Fadaie (2004) ''ISO Standards for Geographic Information''. p.72</ref>

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* 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">[https://web.archive.org/web/20060928000010/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"/>