This article is from the Object-Oriented Technology FAQ, by Bob Hathaway email@example.com with numerous contributions by others.
ORION was a prototype OODBMS developed at MCC, an American consortium by Won
Kim and his group. Won Kim has left MCC and formed a new company, UniSQL, in
Austin, with a new product of the same name.
See also entry under "ITASCA".
I have found nearly a dozen papers published by the ORION folks.
Overviews at various stages in its development and commercialization
can be found in:
[KBGW91] Won Kim, N. Ballou, J.F. Garza, and D.; Woelk. A
distributed object-oriented database system supporting
shared and private databases. ACM Transactions on
Information Systems, 9(1):31--51, January 1991.
[KGBW90] W. Kim, J.F. Garza, N. Ballou, and D. Woelk.
Architecture of the orion next-generation database
system. IEEE Transactions on Knowledge and Data
Engineering, 2(1):109--24, March 1990.
[KBCG89] Won Kim, Nat Ballou, Hong-Tai Chou, and Darrell Garza,
Jorge F. Woelk. Features of the ORION object-oriented
database system. In Won. Kim and Frederick H.
Lochovsky, editors, Object-Oriented Concepts, Databases
and Applications, chapter 11. Addison-Wesley, Reading,
[KBC+88] Won Kim, N. Ballou, Hong-Tai Chou, J.F. Garza,
D. Woelk, and J. Banerjee. Integrating an
object-oriented programming system with a database
system. In Proceedings of the ACM Conference on
Objected-Oriented Programming: Systems, Languages and
Applications (OOPSLA), pages 142--152, San Diego, CA,
September 1988. Published as ACM SIGPLAN Notices
[Pointers to the previous papers documenting each of the
advanced features listed above are cited therein.]
The paper most relevant to the issue of schema evolution is the
[BKKK87] J. Banerjee, W. Kim, H-J. Kim, and H.F. Korth.
Semantics and implementation of schema evolution in
object-oriented databases. In U. Dayal and I. Traiger,
editors, Proceedings of the SIGMOD International
Conference on Management of Data, San Francisco, CA,
You might also like to look at Kim's book, which provides a good
introduction to OODBMS, while focusing on the ORION work:
[Kim90] Won Kim. Introduction to Object-Oriented Databases.
Computer Systems. MIT Press, Cambridge, MA, 1990.