\newcommand{\etalchar}[1]{$^{#1}$}
\begin{thebibliography}{YWT{\etalchar{+}}95}

\bibitem[AB87]{AtBu87}
M.P. Atkinson and P.~Bunemann.
\newblock Types and {Persistence} in {Database} {Programming} {Languages}.
\newblock {\em ACM Computing Surveys}, 19(2), June 1987.

\bibitem[ABD{\etalchar{+}}90]{OODBMS-Mani90}
M.~Atkinson, F.~Bancilhon, 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[AM95]{AtMo95}
Malcolm Atkinson and Ronald Morrison.
\newblock Orthogonally {Persistent} {Object} {Systems}.
\newblock {\em VLDB Journal}, 4(3):319--401, 1995.

\bibitem[BFF96]{http96}
T.~{Berners-Lee}, R.~Fielding, and H.~Frystyk.
\newblock Hypertext {Transfer} {Protocol} --- {HTTP/1.0}.
\newblock Internet-Draft draft-ietf-http-v10-spec-05.ps, HTTP Working Group,
  February 1996.

\bibitem[DDJ{\etalchar{+}}96]{koopis-mani96}
Giorgio {De Michelis}, Eric Dubois, Matthias Jarke, Florian Matthes, John
  Mylopoulos, Klaus Pohl, Joachim Schmidt, Carson Woo, and Eric Yu.
\newblock Cooperative {Information} {Systems:} {A} {Manifesto}.
\newblock In John Mylopoulos, Giorgio De~Michelis, and Florian Matthes,
  editors, {\em Architectural {Issues} in {Cooperative} {Information}
  {Systems:} {A} {Tutorial}}, June 1996.

\bibitem[DHL90]{EAK}
Umeschwar Dayal, Meichum Hsu, and Rioka Ladin.
\newblock Organizing {Long} {Running} {Activities} with {Triggers} and
  {Transactions}.
\newblock {\em ACM SIGMOD}, 1990.

\bibitem[EH96]{ElHe96}
Ramez Elmasri and Abdelsalam Helal.
\newblock Standards for {Database} {Interoperability} and {Portability}:
  {CORBA}, {ODMG} and {SQL}.
\newblock Tutorial Presented at the International Conference on Cooperative
  Information Systems (CoopIS '96), Brussels, Belgium, June 1996.

\bibitem[EW94]{EW94}
Oren Etzioni and Daniel Weld.
\newblock A {Softbot}-based {Interface} to the {Internet}.
\newblock {\em CACM}, July 1994.

\bibitem[FGHW88]{FlWi+88}
Fernando Flores, Michael Graves, Brad Hartfield, and Terry Winograd.
\newblock Computer {Systems} and the {Design} of {Organisational}
  {Interaction}.
\newblock {\em ACM {Transaction} on {Office} {Information} {Systems}},
  6(2):153--172, April 1988.

\bibitem[GM96]{GaMa96a}
A.~Gawecki and F.~Matthes.
\newblock Exploiting {Persistent} {Intermediate} {Code} {Representations} in
  {Open} {Database} {Environments}.
\newblock In {\em Proceedings of the 5th Conference on Extending Database
  Technology, EDBT'96}, Avignon, France, March 1996. Springer-Verlag.
\newblock (to appear).

\bibitem[Hoh95]{hohl95}
Fritz Hohl.
\newblock Konzeption eines einfachen {Agentensystems} und {Implementation}
  eines {Prototyps}.
\newblock Diplomarbeit, Fakult"at Informatik, Universit"at Stuttgart, 1995.

\bibitem[HP94]{hamel94}
G.~Hamel and C.~Parhalad.
\newblock {\em Competing for the {Future}}.
\newblock Harvard Business School Press, Boston, Massachusetts, 1994.

\bibitem[Joh97]{joha97}
Nico Johannisson.
\newblock Eine {Umgebung} f\"ur mobile {Agenten}: {Agentenbasierte} verteilte
  {Datenbanken} am {Beispiel} der {Kopplung} autonomer {Internet}
  "`{WebSiteProfiler}"'.
\newblock Diplomarbeit, Fachbereich Informatik, Universit\"at Hamburg, 1997.

\bibitem[{Kab}96]{Kabel96}
{Kabel New Media}.
\newblock Webtracking -- {Die} 10 wichtigsten {Fragen} und {Antworten}.
\newblock http://www.kabel.de/KNMantworten.html, September 1996.

\bibitem[Lau93]{Lau93}
Thomas Lauer.
\newblock Paketdienst: {G}rundlagen zu {O}bject {L}inking and {E}mbedding
  {(OLE)}.
\newblock {\em c't {M}agazin f{"u}r {C}omputertechnik}, pages 264--272, April
  1993.

\bibitem[Lau97]{Laub97}
{Jan T.} Laub.
\newblock Analyse der {Web-Server-Nutzung}: {Krititerien}, {Protokolldateien}
  und {Auswertungssoftware}.
\newblock Diplomarbeit, Fachbereich Informatik, Universit\"at Hamburg, 1997.

\bibitem[LKK93]{LKK93}
Peter~C. Lockemann, Gerhard Kr{"u}ger, and Heiko Krumm.
\newblock {\em Telekommunikation und Datenhaltung}.
\newblock Hanser-Verlag, M{"u}nchen, Wien, 1993.

\bibitem[Mae94]{Mae94}
Pattie Maes.
\newblock Agents that reduce work and information overload.
\newblock {\em CACM}, July 1994.

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

\bibitem[Mat95]{Matt95}
F.~Matthes.
\newblock Higher-{Order} {Persistent} {Polymorphic} {Programming} in {Tycoon}.
\newblock In M.P. Atkinson, editor, {\em Fully Integrated Data Environments}.
  Springer-Verlag (to appear), 1995.

\bibitem[Mat96]{mathi96}
Bernd Mathiske.
\newblock {\em Mobilit{"a}t in persistenten {O}bjektsystemen}.
\newblock Dissertation, Universit{"a}t Hamburg, Fachbereich Informatik, 1996.

\bibitem[MMM93]{MMM93}
B.~Mathiske, F.~Matthes, and S.~M\"u{\ss}ig.
\newblock The {Tycoon} {System} and {Library} {Manual}.
\newblock DBIS Tycoon Report 212-93, Fachbereich Informatik, Universit\"at
  Hamburg, December 1993.
\newblock (Revised 19-jan-1996).

\bibitem[MMS94]{MMS94}
F.~Matthes, S.~M\"u{\ss}ig, and J.W Schmidt.
\newblock Persistent {Polymorphic} {Programming} in {Tycoon}: An
  {Introduction}.
\newblock FIDE Technical Report Series FIDE/94/106, FIDE Project Coordinator,
  Department of Computing Sciences, University of Glasgow, Glasgow G128QQ,
  August 1994.

\bibitem[MMS95]{MMS95c}
F.~Matthes, R.~M{\"u}ller, and J.W. Schmidt.
\newblock Towards a {Unified} {Model} of {Untyped} {Object} {Stores}:
  Experience with the {Tycoon} {Store} {Protocol}.
\newblock In M.P. Atkinson, editor, {\em Fully Integrated Data Environments}.
  Springer-Verlag (to appear), 1995.

\bibitem[MO94]{MeyOber94}
Hanns-Martin Meyer and Karl Obermayr.
\newblock {\em Objekte integrieren mit {OLE2}: {Microsofts} {Basistechnologie}
  f{"u}r objektorientierte {Architektur}}.
\newblock Springer-Verlag, Berlin, Heidelberg, 1994.

\bibitem[MS93]{MaSc93a}
F.~Matthes and J.W. Schmidt.
\newblock System {Construction} in the {Tycoon} {Environment}: {Architectures},
  {Interfaces} and {Gateways}.
\newblock In {\em Proceedings of Euro-Arch'93 Congress}. Springer-Verlag,
  October 1993.

\bibitem[MS94]{MaSc94}
F.~Matthes and J.W. Schmidt.
\newblock Persistent {Threads}.
\newblock In {\em Proceedings of the Twentieth International Conference on Very
  Large Data Bases, VLDB}, pages 403--414, Santiago, Chile, September 1994.

\bibitem[MSS95]{MSS95}
F.~Matthes, G.~Schr{\"o}der, and J.W. Schmidt.
\newblock {Tycoon}: {A} {Scalable} and {Interoperable} {Persistent} {System}
  {Environment}.
\newblock In M.P. Atkinson, editor, {\em Fully Integrated Data Environments}.
  Springer-Verlag (to appear), 1995.

\bibitem[MSW95]{MSW95}
F.~Matthes, J.W. Schmidt, and J.~Wahlen.
\newblock Using {Extensible} {Grammars} for {Data} {Modeling}.
\newblock In M.P. Atkinson, editor, {\em Fully Integrated Data Environments}.
  Springer-Verlag (to appear), 1995.

\bibitem[{Obj}95]{corba-spec}
{Object Management Group}.
\newblock The {Common} {Object} {Request} {Broker:} {Architecture} and
  {Specification}.
\newblock Document PTC/96-03-04, Revision 2.0, OMG, July 1995.

\bibitem[{Obj}96]{omg-kurz}
{Object Management Group}.
\newblock What is {CORBA}.
\newblock http://ruby.omg.org/corba. htm, June 1996.

\bibitem[OHE96]{DisObjSurvG}
Robert Orfali, Dan Harkey, and Jeri Edwards.
\newblock {\em The Essential Distributed Objects Survival Guide}.
\newblock John Wiley \& Sons, New York, 1996.

\bibitem[{\"O}V94]{OezVa94}
M.T. {\"O}zsu and P.~Valduriez.
\newblock Distributed {Data} {Management}: Unsolved {Problems} and {New}
  {Issues}.
\newblock In T.~Casavant and M.~Singhal, editors, {\em Readings in Distributed
  Computing}. IEEE Computer Society Press, 1994.

\bibitem[Pie96]{piel96}
Andreas Piellusch.
\newblock Synchronisation langlebiger {Aktivit\"aten} in persistenten
  {Objektsystemen}.
\newblock Diplomarbeit, Fachbereich Informatik, Universit\"at Hamburg, Juni
  1996.

\bibitem[Sch93]{Schi93}
Alexander Schill.
\newblock {\em {DCE -- D}as {OSF D}istributed {Computing} {Environment},
  {Einf"uhrung} und {Grundlagen}}.
\newblock Springer-Verlag, Berlin, Heidelberg, 1993.

\bibitem[Sch96]{scho96}
Martin Schoel.
\newblock {CORBA}-basierte {Integration} von {Diensten} eines
  {Umweltinformationssystems}.
\newblock Diplomarbeit, Fakult{"a}t f{"u}r Informatik, {Universit{"a}t
  Karlsruhe}, Januar 1996.

\bibitem[Sie96]{sig96}
Jon Siegel.
\newblock {\em CORBA Fundamentals and Programming}.
\newblock John Wiley \& Sons, New York, 1996.

\bibitem[Whi94]{whi194}
{James E.} White.
\newblock Telescript {Technology}: The {Foundation} for the {Electronic}
  {Marketplace}.
\newblock White paper, General Magic, 1994.

\bibitem[Win87]{Wino87}
Terry~A. Winograd.
\newblock A {Language/Action} {Perspective} on the {Design} of {Cooperative}
  {Work}.
\newblock Technical Report STAN-CS-87-1158, Department of {Computer} {Science},
  {Stanford} {University}, {Stanford}, {CA 94305}, April 1987.

\bibitem[YWT{\etalchar{+}}95]{YWT*95}
E.~Yourdon, K.~Whitehead, J.~Thomann, K.~Oppel, and P.~Nevermann.
\newblock {\em Mainstream Objects: An Analysis and Design Approach for
  Business}.
\newblock Yourdon Press (Prentice Hall), 1995.

\end{thebibliography}