SIGMOD/PODS JOINT CALL FOR PAPERS
                  =====================================

                     ACM SIGMOD/PODS '98 Joint Conference
                   June 1-4, 1998, Seattle, Washington, USA
            http://www.boeing.com/sigmod98/


                    Message from the General Chairs

The ACM SIGMOD/PODS Joint Conference aims at fostering close
collaboration between the theoretical and applied database
communities. As we near the dawn of the next century, database
technology remains essential, and continues to rapidly evolve as more
complex and massive information management requirements emerge. Our
society can benefit greatly from the full maturation of database
technology, and we hope that the collaboration that will result from
this joint conference will play a seminal role in stimulating this
process. We encourage you to play a part in this important event.

The PODS and SIGMOD conferences have separate program committees and
will have separate proceedings. Authors must submit their papers to
the conference that they feel is most appropriate for their work. We
recommend that theoretical papers be submitted to PODS and applied
ones to SIGMOD.  The same paper or different versions of the same
paper should not be submitted to both conferences simultaneously. The
two conferences will overlap for two days, but each conference will
have a separate third day without overlap. There will be only one
registration process for the joint, four-day conference. Attendees
will receive both proceedings and be encouraged to attend sessions in
both conferences. Some of the technical events, the lunches, and the
outing will be joint events.

Once again, you are invited to participate in what we plan to be an
exciting and enriching event for 1998 in Seattle, Washington.

Sincerely,
Pamela Drew, SIGMOD '98 General Chair
Alberto Mendelzon, PODS '98 General Chair
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(See PODS announcement also.)

                     SIGMOD '98 CALL FOR PAPERS

The 1998 ACM-SIGMOD Conference will bring together researchers,
practitioners, developers and users to explore new concepts, tools,
and techniques for database management systems. The conference will
provide a forum for the dissemination of original research
contributions as well as contributions related to practical system
design, implementation, and evaluation. The conference will also
feature panel sessions, tutorials, exhibits, demonstrations and a
significant industrial track highlighting DBMS research and
technology.

Topics of Interest

The major topics of interest include but are not limited to:
  Active Databases                       Access Methods and Data Structures
  Authorization and DB Security         Constraint and Rule Management
  Data Models                           Database Design
  Database Mining and OLAP              Database Performance and Benchmarks
  Database Programming Languages        Distributed Database Systems
  Engineering/Scientific DB Systems        Extensible Database Systems        
  Heterogeneous Database Systems        Imprecise and Uncertain
Information
  Information Retrieval and Database    Legacy Databases
  Logic and Databases                    Mobile Computing and Database
  Multimedia Database Systems            Object-Oriented Database Systems
  Parallel Database Systems              Query Languages
  Query Processing and Optimization     Real-Time Database Systems
  Spatial and Temporal Databases        Tertiary Storage for Database Data
  User and Application Interfaces       Workflow and Databases
  World-Wide Web and Databases

We strongly encourage submission of papers and participation from the
entire international community of database researchers and
practitioners.  We also strongly encourage submission of papers that
propose new approaches to topical areas for which current solutions
are deemed inappropriate.  Such papers, while perhaps not as fully
developed, can nonetheless provide new technical directions to the
field.

Submission Guidelines:

All submissions (including technical papers, panels, demos, tutorials
and industrial submissions) must be received by November 3, 1997.
Submissions should be sent to the program chair:

Laura M. Haas
IBM Almaden Research Center, K55/B1
650 Harry Road
San Jose, CA 95120-6099
USA
e-mail: sigmod98@almaden.ibm.com
phone: 408-927-1722 fax: 408-927-3215

Research Papers

Please submit six copies of an original manuscript to the program
chair.  All submissions should be less than 25 pages, double-spaced,
in no smaller than 10 point font (and with normal margins). The
address, telephone number, FAX number, and electronic address of the
contact author should be given on the title page of the submission. In
addition, you must submit to the program chair by electronic mail a
PLAIN ASCII file (no postscript, no LaTex) containing the title of the
paper, the authors, and an abstract of 250 words or less by October
27, 1997. All authors of accepted papers will be expected to sign
copyright release forms, and one author of each accepted paper will be
expected to present the paper at the conference.  Proceedings will be
distributed at the conference, and will be subsequently available for
purchase through the ACM.

SIGMOD Industrial Track

Plans for the conference include a continued emphasis on the SIGMOD
industrial program. To this end, SIGMOD solicits submissions focusing
on industrial experience with databases, database systems, and other
data-related technologies. Solicited topics include technical
innovations in commercial database products, as well as novel
application of databases or database technology in industrial
settings. Actual case studies from practitioners emphasizing
applications, data management technology (e.g., Internet server, push
and information broadcasting, and document management), database
development tools, system deployment, organizational ramifications, or
business impact are especially welcomed. Submissions should take the
form of an extended abstract (2 pages maximum) and should be sent to
the program chair by the regular paper deadline. These submissions
will be forwarded to the Industrial Track Co-Chairs and evaluated by
the Industrial Committee. Authors of accepted submissions will be
invited to speak in the Industrial Track of the conference and to have
their extended abstract (or an expanded version) included in the
SIGMOD conference proceedings.

Demonstration and Exhibits Program

SIGMOD'98 will host demonstrations of software prototypes from
universities and research laboratories related to database management
systems research and practice. The demonstrations will be featured
during one or more of the breaks and/or receptions this year as well
as during the conference. To submit a demonstration proposal, please
send a project/system description of up to 5 pages to the program
chair by the regular paper deadline.  Submissions will be forwarded to
the Demonstrations Chair for evaluation.  Descriptions of accepted
demonstrations will appear in the proceedings.  Authors of accepted
proposals will be expected to provide their own hardware and software
for the demonstration; network connections will be provided. In
addition, publishers are invited to exhibit books and related
journals.

Tutorial and Panel Program

There will be a series of 1.5 hour tutorial and panel sessions focused
this year on narrowing the gap between the research and industrial
communities.  Tutorials and panels addressing real industrial
challenges (including techniques for facilitating technology transfer)
are particularly sought.  Each panel or tutorial proposal should
include a one-page description of the subject matter, the name of the
organizer, and for panels, a list of proposed panelists. Descriptions
of accepted submissions will appear in the proceedings. Submissions
should be addressed to the program chair who will forward them to the
appropriate chair for evaluation.

Important SIGMOD Dates
 Firm deadline for email submission of abstracts of
 papers (REQUIRED) in ASCII to sigmod98@almaden.ibm.com:     October 27, 1997
 Firm deadline for ALL submissions (email submissions NOT 
accepted):                                                   November 03, 1997
 Notification of acceptance/rejection:                       January 30, 1998
 Camera-ready copies due:                                    March 07, 1998
 Conference: June 2-3, 1998

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                       PODS '98 Call for Papers

The symposium will focus on new developments in the fundamental
aspects of databases. Original research papers on the theory, design,
specification, or implementation of databases are solicited. Papers
emphasizing new topics or foundations of emerging areas are especially
welcomed.

Topics of Interest

Suggested topics include the following: (this list is not exclusive)
 access methods and physical design                   active databases
 complexity and performance evaluation                concurrency control
 constraint databases                                 data integration and
                                                           interoperability
 data mining                                          data models
 database programming languages                       database updates
 databases on Internet and  Intranet                  deductive databases and knowledge bases
 distributed databases                                heterogeneous databases
 integrity and security                               logic in databases
 multimedia databases                                 object-oriented databases
 OLAP                                                 query languages
 real-time databases                                  semi-structured data
 spatial and temporal databases                       transaction management
 views and warehousing

Paper Submission

Submissions of extended abstracts can be sent, in twelve copies, to
one of the following two addresses, to be received before the deadline
of 17 November 1997:

 Jan Paredaens                                        Dan Suciu
 University of Antwerp (UIA)                            AT&T Labs-Research
 Universiteitsplein 1                                   180 Park Avenue, Rm. B294
 B-2610 Antwerp, Belgium                                Florham Park, NJ 07932-0971, USA
 E-mail: pods98@uia.ua.ac.be                            E-mail: suciu@research.att.com
 Tel: +32-3-8202409                                     Tel: +1-973-3608601
 Fax: +32-3-8202421             

No electronic submissions will be accepted.

The address, telephone number, FAX number, and e-mail address of the
contact author should be given on the title page of the submission. A
limit of 10 pages is placed on submissions. Font size should be at
least 10 points. The abstract must provide sufficient detail to allow
the program committee to assess its merits and should include
appropriate references to and comparisons with the literature. It is
recommended that each submission begin with a succinct statement of
the problem a summary of the main results, and a brief explanation of
their significance and relevance to the conference, all suited for the
non-specialist. Technical development of the work, directed to the
specialist, should follow. If the authors believe more details are
necessary to substantiate the main claims of the paper, they may
include a clearly marked appendix to be read at the discretion of the
committee.

BEST NEWCOMER AWARD: An award will be given to the best submission, as
judged by the program committee, written solely by authors who have
never
published in earlier PODS proceedings.

BEST PAPER AWARD: There will also be an award for the best of all papers
submitted, as judged by the program committee.

The program committee reserves the right to give both awards to the same
paper, not to give an award, or to split an award among several papers.
Papers authored or co-authored by program committee members are not
eligible for an award.

Important PODS dates:
 Paper submission deadline:              17 November 1997
 Notification of acceptance:              9 February 1998
 Camera-ready copy due:                  14 March 1998
 Symposium:                             1-3 June 1998
   
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SIGMOD '98 Conference Organization
 General Chair:                 Pamela Drew, Boeing
 Program Chair:                  Laura Haas, IBM Almaden
 Demonstrations Chair:   Lois Delcambre, Oregon Graduate Institute
 Exhibits Chair:                 Ali Bahrami, Boeing
 Industrial Program              Jose Blakeley, Microsoft
 Co-Chairs:                      Alejandro Buchmann, T.H. Darmstadt
                                         Roger King, University of Colorado
 Local Arrangements:      Mike Crandall, Boeing Library
 Panels Chair:                   Michael Brodie, GTE
 Proceedings Editor:             Ashutosh Tiwary, Boeing
 Publicity Chair:                Prabhu Ram, Boeing
 Registration:                   Lyman Do, Oregon Graduate Institute
 Tutorials Chair:                Markus Tresch, Swiss Federal Institute of
Technology (ETH)
 Treasurer:                      Christoph Bussler, Boeing

SIGMOD '98 Program Committee
 Rafael Alonso                   Sarnoff Labs
 Catriel Beeri                   Hebrew University
 Azer Bestavros                  Boston University
 Paul Brown                      Informix
 Surajit Chaudhuri               Microsoft
 Chin-Wan Chung                  KAIST
 Umeshwar Dayal                  HP Labs
 Klaus Dittrich                  University of Zurich
 Asuman Dogac                    Middle Eastern Technical University
 Amr El Abbadi                   University of California Santa Barbara
 Shel Finkelstein                SunSoft
 Shahram Ghandeharizadeh University of Southern California
 Paul W. P. J. Grefen            University of Twente
 Theo Haerder                    University of Kaiserslautern
 Ralf Hartmut Gueting            Fernuniversitaet Hagen
 Eric Hanson                     University of Florida
 Joseph Hellerstein              University of California Berkeley
 Donald Kossmann                 University of Passau
 Yannis Ioannidis                University of Wisconsin
 Alon Levy                       AT&T Research
 Bruce Lindsay                   IBM
 Miron Livny                     University of Wisconsin
 David Lomet                     Microsoft
 Frank Manola                    Object Services and Consulting
 Meral Ozsoyoglu                 Case Western Reserve University
 Kotagiri Ramamohanarao  University of Melbourne
 Rajeev Rastogi                  Bell Labs (Lucent)
 Elke Rundensteiner              University of Michigan
 Marek Rusinkiewicz              MCC
 Giuseppe Santucci               University di Roma 1
 Sunita Sarawagi                 IBM
 Donovan Schneider       Red Brick
 Praveen Seshadri                Cornell University
 S. Seshadri                     IIT Bombay
 Amit Sheth                      University of Georgia
 Keishi Tajima                   Kobe University
 Anthony Tomasic                 INRIA
 Patrick Valduriez               INRIA
 Dirk van Gucht                  University of Indiana
 Jennifer Widom                  Stanford University
 Yelena Yesha                    CESDIS and University of Maryland, Baltimore

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PODS '98 Conference Organization
 General Chair:                  Alberto Mendelzon, University of Toronto
 Program Chair:                  Jan Paredaens University of Antwerp
 Proceedings Chair:              Latha Colby, Red Brick Systems
 Publicity Chair:                Jan Van den Bussche, University of Limburg

PODS '98 Program Committee
 Christos Faloutsos              University of Maryland
 Georg Gottlob                   TU Wien
 Laks Lakshmanan                 Concordia University
 Leonid Libkin                   Bell Laboratories
 Heikki Mannila                  University of Helsinki
 Rajeev Motwani                  Stanford University
 Ken Ross                        Columbia University
 Dan Suciu                       AT&T Labs
 Moshe Vardi                     Rice University
 Gerhard Weikum                  University of Saarland