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The Network Computing System (NCS) was an implementation of the Network Computing Architecture (NCA). It was created at Apollo Computer in the 1980s. It comprised a set of tools for implementing distributed software applications, or distributed computing. The three principal components of NCS were a runtime environment for remote procedure calls, a network interface definition language (NIDL) compiler, and a location broker service. The location broker differentiated NCS from similar offerings, such as the rival Open Network Computing technology from Sun Microsystems, by permitting services to be distributed in a dynamic fashion and offering the possibility of "location independence".

The design and implementation of DCE/RPC, the remote procedure call mechanism in the Distributed Computing Environment, is based on NCA/NCS. In response to a request for proposals from the Open Software Foundation for distributed computing environments, NCS featured in the DEcorum proposal submitted by Apollo, by then incorporated as a division within Hewlett-Packard, along with IBM, Locus Computing, Transarc, Digital Equipment Corporation and Microsoft. It also was the first implementation of universally unique identifiers, these being employed by the location broker to identify objects in the distributed system.

References

1. Kong 1987, p. 1.
2. Carl, Mike (October 1989). "Cooperative Computing". HP Professional. pp. 54, 56–59. Retrieved 15 April 2024.
3. Kobielus, James (20 November 1989). "RPC tools pave way for cooperative processing". Network World. pp. 1, 40–41, 44, 46. Retrieved 15 April 2024.
4. Chappell, David (March 1993). "The OSF Distributed Computing Environment (DCE)". ConneXions. Vol. 7, no. 3. pp. 18–27. Retrieved 14 April 2024.
5. Brown, Jim (19 June 1989). "OSF asks users, vendors for distributed computing specs". Network World. p. 69. Retrieved 14 April 2024.
6. Sharp, Bill (May 1990). "A modicum of DEcorum". HP Professional. pp. 66, 68–69. Retrieved 14 April 2024.
7. Peterson, John W. (October 1987). "Distributed Computation for Computer Animation". Proceedings of the Fourth Computer Graphics Workshop. USENIX Association: 24–36. Retrieved 15 April 2024.

Bibliography

• Kong, Mike; et al. (Apollo Computer Inc.) (1987). Network Computing System Reference Manual. New Jersey: Prentice Hall. ISBN 0-13-617085-4.
• Zahn, Lisa; et al. (Apollo Computer Inc.) (1990). Network Computing Architecture. New Jersey: Prentice Hall. ISBN 0-13-611674-4.
• Lyons, Tom (1991). Network Computing System Tutorial. Hewlett-Packard Company, New Jersey: Prentice Hall. ISBN 0-13-617242-3
• P. Leach et al. (2005). RFC 4122 — A Universally Unique IDentifier (UUID) URN Namespace. Internet Engineering Task Force.

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