\newcommand{\etalchar}[1]{$^{#1}$}
\begin{thebibliography}{MRSS92b}

\bibitem[AB87]{AtBu86}
M.P. Atkinson and P.~Bunemann.
\newblock Types and Persistence in Database Programming Languages.
\newblock {\em ACM Computing Surveys}, 19(2), June 1987.

\bibitem[ABW{\etalchar{+}}90]{ABW*90}
M.~Atkinson, F.~Ban\c{c}ilhon, D.~De Witt, K.~Dittrich, D.~Maier, and
  S.~Zdonik.
\newblock The Object-Oriented Database System Manifesto.
\newblock In {\em Deductive and Object-oriented Databases}. Elsevier Science
  Publishers, Amsterdam, Netherlands, 1990.

\bibitem[Bar90]{Bark90}
K.~Barker.
\newblock {\em Transaction Management on Multidatabase Systems}.
\newblock PhD thesis, Department of Computing Science, University of Alberta,
  Edmonton, Alberta, Canada, 1990.
\newblock available as Technical Report TR90-23.

\bibitem[Ber90]{Bern90}
P.A. Bernstein.
\newblock Transaction Processing Monitors.
\newblock {\em Communications of the ACM}, 3(11):75--86, 1990.

\bibitem[BO91]{BaOz91}
K.~Barker and M.T. \"Ozsu.
\newblock Reliable Transaction Execution in Multidatabase Systems.
\newblock In {\em Proc. 1st Int. Workshop on Interoperability in Multidatabase
  Systems}, Kyoto, Japan, 1991.

\bibitem[BS88]{BrSi88}
Y.~Breibart and A.~Silberschatz.
\newblock Multidatabase Update Issues.
\newblock In {\em Proceedings of the ACM-SIGMOD International Conference on
  Management of Data, Chicago, Illinois}, June 1988.

\bibitem[DE89]{DuEl89}
W.~Du and A.~Elmagarmid.
\newblock Quasi-Serializability: A Correctness Criterion for Global Concurrency
  Control in InterBase.
\newblock In {\em Proceedings of the Fifteenth International Conference on Very
  Large Databases}, August 1989.

\bibitem[DW84]{DaWa84}
U.~Dayal and H.Y. Wang.
\newblock View Definition and Generalization for Database System Integration in
  a Multidatabase System.
\newblock {\em IEEE Transactions on Software Engineering}, SE-10(6):628--645,
  November 1984.

\bibitem[ERMS91]{ERMS91}
J.~Eder, A.~Rudloff, F.~Matthes, and J.W. Schmidt.
\newblock Data Construction with Recursive Set Expressions in {DBPL}.
\newblock In {\em Proceedings of the Kiev East/West Workshop on Next Generation
  Database Technology}, volume 504 of {\em Lecture Notes in Computer Science},
  April 1991.

\bibitem[Geo90]{Geor90}
D.~Georgakopoulos.
\newblock {\em Transaction Management on Multidatabase Systems}.
\newblock PhD thesis, Department of Computer Science, University of Houston,
  TX, 1990.

\bibitem[Geo91]{Geor91}
D.~Georgakopoulos.
\newblock Multidatabase Recoverability and Recovery.
\newblock In {\em Proc. 1st Int. Workshop on Interoperability in Multidatabase
  Systems}, Kyoto, Japan, 1991.

\bibitem[GMK88]{GaKo88}
H.~Garcia-Molina and B.~Kogan.
\newblock Node Autonomy in Distributed System.
\newblock In {\em Proc.\ Int.\ Symp.\ on Databases in Parallel and Distributed
  Systems}, Austin, TX, December 1988.

\bibitem[HZ90]{HeZd90}
S.~Heiler and S.~Zdonik.
\newblock Object Views: Extending the Vision.
\newblock In {\em Proceedings of the IEEE Sixth International Conference on
  Data Engineering}, 1990.

\bibitem[JGL{\etalchar{+}}88]{JGLR88}
W.~Johannsen, L.~Ge, W.~Lamersdorf, K.~Reinhard, and J.W. Schmidt.
\newblock Database Application Support in Open Systems: Language Support and
  Implementation.
\newblock In {\em Proc. IEEE 4th Int. Conf. on Data Engineering}, Los Angeles,
  USA, February 1988.

\bibitem[JLRS88]{JLRS88}
W.~Johannsen, W.~Lamersdorf, K.~Reinhard, and J.W. Schmidt.
\newblock The {DURESS} Project: Extending Databases into an Open Systems
  Architecture.
\newblock In {\em Advances in Database Technology, EDBT '88}, volume 303 of
  {\em Lecture Notes in Computer Science}, pages 616--620. Springer-Verlag,
  1988.

\bibitem[KL89]{KiLo89}
W.~Kim and F.H. Lochowsky.
\newblock {\em Object-Oriented Concepts, Databases and Applications}.
\newblock ACM Press Books, 1989.

\bibitem[LA87]{LiAb87}
W.~Litwin and A.~Abdellatif.
\newblock An Overview of the Multidatabase Manipulation Language MDL.
\newblock {\em Proc. IEEE}, 75(5):621--631, May 1987.

\bibitem[Man90]{Mano90}
F.~Manola.
\newblock Object-Oriented Knowledge Bases -- Parts I and II.
\newblock {\em AI Exepert}, pages 26--36, 46--57, March and April 1990.

\bibitem[Mat93]{Matt93}
F.~Matthes.
\newblock {\em Persistente Objektsysteme: Integrierte Datenbankentwicklung und
  Programmerstellung}.
\newblock Springer-Verlag, 1993.
\newblock (In German).

\bibitem[MB81]{MoBu81}
A.~Motro and P.~Buneman.
\newblock Constructing Superviews.
\newblock In {\em Proceedings of the ACM-SIGMOD International Conference on
  Management of Data}, pages 56--64, 1981.

\bibitem[MRSS92a]{MRSS92}
F.~Matthes, A.~Rudloff, J.W. Schmidt, and K.~Subieta.
\newblock The Database Programming Language {DBPL}: User and System Manual.
\newblock FIDE Technical Report FIDE/92/47, Fachbereich Informatik,
  Universit\"at Hamburg, Germany, July 1992.

\bibitem[MRSS92b]{MRSS92b}
F.~Matthes, A.~Rudloff, J.W. Schmidt, and K.~Subieta.
\newblock A Gateweay from {DBPL} to {Ingres}.
\newblock FIDE Technical Report Series FIDE/92/54, Fachbereich Informatik,
  Universit\"at Hamburg, Germany, November 1992.

\bibitem[MS91]{MaSc91b}
F.~Matthes and J.W. Schmidt.
\newblock Bulk Types: Built-In or Add-On?
\newblock In {\em Proceedings of the Third International Workshop on Database
  Programming Languages}, Nafplion, Greece, September 1991. Morgan Kaufmann
  Publishers.
\newblock (Also appeared as TR FIDE/91/27).

\bibitem[MS92]{MaSc92a}
F.~Matthes and J.W. Schmidt.
\newblock Definition of the Tycoon Language TL -- A Preliminary Report.
\newblock Informatik Fachbericht FBI-HH-B-160/92, Fachbereich Informatik,
  Universit\"at Hamburg, Germany, November 1992.

\bibitem[MS93]{MaSc93}
F.~Matthes and J.W. Schmidt.
\newblock System Construction in the Tycoon Environment: Architectures,
  Interfaces and Gateways.
\newblock In P.P. Spies, editor, {\em Proceedings Euro-Arch'93}, 1993.

\bibitem[{\"O}V91]{OzVa91}
M.T. {\"O}zsu and P.~Valduriez.
\newblock {\em Principles of Distributed Database Systems}.
\newblock Prentice Hall, Englewood Cliffs, NJ, 1991.

\bibitem[{\"O}V93]{OzVa93}
M.T. {\"O}zsu and P.~Valduriez.
\newblock Distributed Data Management: unsolved problems and new issuses.
\newblock In T.~Casavant and M.~Singhal, editors, {\em Readings in Distributed
  Computing}. IEEE Computer Society Press, 1993.

\bibitem[SM91]{ScMa91a}
J.W. Schmidt and F.~Matthes.
\newblock Modular and Rule-Based Database Programming in {DBPL}.
\newblock FIDE Technical Report Series FIDE/91/15, Fachbereich Informatik,
  Universit\"at Hamburg, Germany, February 1991.

\bibitem[SM93]{ScMa93}
J.W. Schmidt and F.~Matthes.
\newblock Lean Languages and Models: Towards an Interoperable Kernel for
  Persistent Object Systems.
\newblock In {\em Proceedings of the IEEE International Workshop on Research
  Issues in Data Engineering, Interoperability in Multidatabase Systems}, pages
  2--16, Vienna, Austria, April 1993.

\bibitem[SRL{\etalchar{+}}90]{Manifesto90}
M.~Stonebraker, L.A. Rowe, B.~Lindsay, J.~Gray, M.~Carey, M.~Brodie, and
  P.~Bernstein.
\newblock Third-Generation Data Base System Manifesto.
\newblock {\em ACM SIGMOD Record}, 19(3):31--44, September 1990.

\bibitem[SSS{\etalchar{+}}92]{S*92}
D.~Stemple, R.B. Stanton, T.~Sheard, P.~Philbrow, R.~Morrison, G.N.C. Kirby,
  L.~Fegaras, R.L. Cooper, R.C.H. Connor, M.P. Atkinson, and S.~Alagic.
\newblock Type-Safe Linguistic Reflection: A Generator Technology.
\newblock Research Report CS/92/6, Univ. of St. Andrews, Dept. of Comp.
  Science, July 1992.

\bibitem[SSU90]{SSU90}
A.~Silberschatz, M.~Stonebraker, and J.D. Ullman.
\newblock Database Systems: Achievements and Opportunities, Report of the NSF
  Invitational Workshop on the Future of Database Systems Research.
\newblock Technical Report TR-90-22, Department of Computer Science, The
  University of Texas at Austin, TX, 1990.

\bibitem[Sto90]{Ston90a}
M.~Stonebraker.
\newblock Architecture of Future Data Base Systems.
\newblock {\em IEEE Quarterly Bulletin Database Engineering}, 13(4):18--23,
  December 1990.

\bibitem[SY90]{ScYu90}
P.~Scheuermann and C.~Yu.
\newblock Report of the Workshop on Heterogeneous Database Systems.
\newblock {\em IEEE Quarterly Bulletin Database Engineering}, 13(4):3--11,
  December 1990.

\bibitem[Tay87]{Tayl87}
R.W. Taylor.
\newblock Data Server Architectures: Experiences and Lessons.
\newblock In {\em Proc.\ CIPS (Canadian Information Processing Society)
  Edmonton '87 Conf.}, pages 334--342, 1987.

\bibitem[Wir85]{Wirt85b}
N.~Wirth.
\newblock Report on the Programming Language Modula-2.
\newblock In {\em Programming in Modula-2}. Springer-Verlag, 3rd edition, 1985.

\bibitem[WV90]{WoVe90}
A.~Wolski and J.~Veijalainen.
\newblock 2PC Agent Method: Achieving Serializability in Presence of Failures
  in a Heterogeneous Multidatabase.
\newblock In {\em Proc. Int. Conf. on Databases, Parallel Architectures and
  their Applications}, pages 321--330, Miami Beach, FL, 1990.

\bibitem[ZM89]{ZdMa89}
S.B. Zdonik and D.~Maier.
\newblock {\em Readings in Object Oriented Database Management Systems}.
\newblock Morgan Kaufmann Publishers, 1989.

\end{thebibliography}