ADBIS'99 CONFERENCE PROGRAM

SCIENTIFIC PROGRAM

TUTORIALS

Tutorial 1 - Data and Web Warehousing: Design, Maintenance and Implementation

Dr. Mukesh Mohania, School of Computer and Information Science, University of South Australia, Australia
Dr. Mukesh Mohania is a senior lecturer at School of Computer and Information Science, University of South Australia. He has published in the areas of distributed deductive databases, data warehousing, mobile databases, and data mining. He has offered tutorials on data warehousing in two international conferences and they were well attended and appreciated by attendees.
Dr. Sanjay Kumar Madria, Dept. of Computer Science, Purdue University, USA
Dr. Sanjay Madria is currently a Visiting Assistant Professor at Dept. of Computer Science, Purdue University. He has published more than 30 papers in the areas of web warehousing, data warehousing, mobile computing, object-oriented databases and nested transaction management. Dr. Madria has given tutorials on web warehousing and mobile databases in three international conferences, which received very good response.

This tutorial contains two parts:

(1) Data Warehousing
Data Warehousing is a recent information technology that allows information to be easily and efficiently accessed for decision making activities. In this part of tutorial, we review the current state of the art in the data warehousing technology. In particular, we start with the architecture of a data warehouse system, cleaning data for warehousing, and discuss the main steps in designing and maintaining a data warehouse.

(2) Web Warehousing
Information on the WWW is important not only to individual users, but also to business organizations especially when decision making is concerned. The second part of the tutorial deals with the querying and management of unstructured and semi-structured data. Here we study the current web data models and query languages to deal with web data. The key objective is to design and implement a web warehouse that materializes and manages useful information from the web. In particular, we discuss building a web warehouse using database approach of managing and manipulating web warehouse containing strategic information coupled from the web that may also inter-operate with conventional data warehouses.

Tutorial 2 - Cooperative Information Agents and Systems in Cyberspace

Dr. Matthias Klusch, German National Research Center for Artificial Intelligence, Germany
Dr. Matthias Klusch is a Senior Researcher at the German National Research Center for Artificial Intelligence (DFKI) since 1999. He is the coordinator of the ESPRIT AgentLink Special Interest Group on Intelligent Information Agents. His research mainly focus on the application of software agent technology in modern information environments, especially adaptive and rational collaborating agents on the Internet.
Prof. Dr. Wolfgang Benn, Technical University of Chemnitz, Germany
Dr. Wolfgang Benn (PhD, University of Hamburg, 1985) is full professor for data management systems at the Technical University of Chemnitz, Germany, since the late 1992. His research interests are federated systems, intelligent databases, application of AI techniques in data management, and databases for subsymbolic multimedia data, in particular audio data.

The development of collaborative and intelligent information agents is of rapidly increasing importance. But what exactly are information agents, and what impact will they have on computing early in the next century? Roughly speaking, information agents are computational software systems that have access to multiple, heterogeneous and geographically distributed information sources. One of the main tasks of such agents is to assist users in finding useful, relevant information; in other words, to manage and overcome the difficulties associated with "information overload".
The tutorial provides a comprehensive overview of existing systems and applications of collaborative information agents in Cyberspace. It discusses a number of significant techniques and tools for development of information agents which exhibit properties such as: adaptation, rational behavior, mobility and collaboration with users/other agents.

Tutorial 3 - Database Security - Scope, State-of-the-Art, and Evaluation of Techniques

Prof. Dr. Günther Pernul, Alexander W. Röhm, Gaby Herrmann, Dep. of Information Systems, University of Essen, Germany
Dr. Günther Pernul is currently a full professor at the Department of Information Systems at the University of Essen, Germany. His research interests are electronic commerce and new media, information systems security, advanced database applications, applied cryptography. Dr. Günther Pernul is co-author of a database text book, has edited or co-edited three books, published in scientific journals and conference proceedings on various information systems topics and participated in European funded research projects on the security of interoperable databases and data warehouses.

The course contains a broad coverage and review of recent developments in the database and information systems security field. Its main focus is on a) authorization and access control issues and on b) modeling security semantics of database applications. The course is intended (a) for individuals starting out in the field of database security and (b) researchers and practitioners interested in a broad coverage. Our goal is to show what security principles are available in commercial DBMSs, to discuss their limitations and to show what recent research developments may contribute.

Session 1 - Opening of the Conference and Invited talk
Chair: Ivan Rozman, University of Maribor

Multi-media Information Systems and the Internet

Prof. Dr. Erich Neuhold, GMD - German National Research Center for Information Technology, Darmstadt and Darmstadt University of Technology, Germany
Dr. Erich J. Neuhold is Director of the Institute for Integrated Publication and Information Systems of the German National Research Centre for Information Technology in Darmstadt, Germany since 1986. His primary research and development interests are in heterogeneous interoperable database systems, object-oriented multimedia knowledge bases and intelligent information retrieval. He also guides research and development in user interfaces including virtual reality concepts for information visualization, computer supported cooperative work, virtual meetings and conferences as well as integrated publication and information systems with special emphasis on multimedia hyperdocuments and on information mining in the Internet / WEB environment. National and international cooperation with research and industrial partners ensures the transfer of results into widely available prototypes and products. He published over 190 papers, 4 books, and has edited 9 books. Since 1989 he is also Professor of Computer Science, Integrated Publication and Information Systems, at the Darmstadt University of Technology, Germany.

Short description of the talk:

The explosion of multimedia information on the internet makes it more and more important that decent Quality of Service can be assured even for us "normal citizens". Here we do not really mean transmission speed and quality but rather better structuring and meta-data descriptions. Multimedia for us consists of a mixtures of textual, image, audio and video data as for example sales information, travel catalogues, or modern educational and training material.

The family of XML languages and MPEG developments especially MPEG7, lead us to believe that real progress in this area is at hand. The talk will show how these features can be incorporated into and handled by WEB oriented multimedia databases and how searching, filtering and visualization will be affected by the better structuring facilities and the powerful meta-information schemes of those approaches. Examples will be drawn from our work at GMD IPSI.

Session 2A - Integration
Chair: Leonid Kalinichenko, Russian Academic of Sciences

Consistent Handling of Integrity Constraints and Extensional Assertions for Schema Integration
Can Türker, Gunter Saake
Otto-von-Guericke Universitaet Magdeburg, Germany

Deriving Type Conflicts and Object Cluster Similarities in Database Schemes by an Automatic and Semantic Approach
Domenico Ursino
Universita della Calabria, Italy

(short) Sharing of Heterogeneous Databases Modules by Integration Objects
Gisele Busichia, ICMC-USP-Sao Carlos, Brazil
João Ferreira, IME-DCC-USP Sao Paulo, Brazil

(short) HYPERMEDATA Approach: A way to Systems Integration
Karel Skoupý, Jana Kohoutková, Masaryk University Brno, Czech Republic
Miroslav Benešovský, Beri Ltd, Czech Republic
K. Jeffery, CLRC Rutherford Appleton Laboratory, United Kingdom

Session 2B - Information Retrieval & Multimedia
Chair: Guenther Pernul, University of Essen

A Model for Querying Annotated Documents
Frédérique Laforest, Anne Tchounikine
INSA-Universite Lyon 1, France

Word-based Compression Methods and Indexing for Text Retrieval Systems
Jiøí Dvorský, Václav Snášel, Palacky University of Olomouc, Czech Republic
Jaroslav Pokorný, Charles University, Czech Republic

Processing of Spatio-Temporal Queries in Image Databases
Theodoros Tzouramanis, Michael Vassilakopoulos, Yannis Manolopoulos
Aristotle University, Greece

Session 3A - Transactions
Chair: Johann Eder, University of Klagenfurt

On the Correctness of Virtual Partition Algorithm in a Nested Transaction Environment
Sanjay Kumar Madria, Purdue University, USA
S.N. Maheshwari, B. Chandra, Indian Institute of Technology, India

Computing Rules for Detecting Contradictory Transaction Termination Dependencies
Kerstin Schwarz, Can Türker, Gunter Saake
Otto-von-Guericke Universitaet Magdeburg, Germany

A New Class Hierarchy Concurrency Control Technique in Object-Oriented Database Systems
Woochun Jun, Seoul National University of Education, Korea

Session 3B - Index-Structures
Chair: Yannis Manolopoulos, Aristotle University

The G^r_tree: The Use of Active Regions in G-trees
Dimitris Kapopoulos, Michael Hatzopoulos
University of Athens, Greece

S*-tree: An Improved S⁺-tree for Coloured Images
Enrico Nardelli, Guido Proietti
Universita di L'Aquila, Italy

(short) Indexing on Multivalued Attributes Using Partial-Order Trees
Krzystof Goczy³a, Technical University of Gdansk, Poland

(short) An Index Structure for the Support of Partial and Exact Match Queries Database Systems
Spiros Sioutas, Athanassios Tsakalidis, John Tsaknakis, Bill Vassiliadis
University of Patras, Greece

Session 4A - Experience, Applications, Trends
Chair: Boris Novikov, University of St. Petersburg

(short) Reference and Dereference in WinBase602
Vojtìch Tloušt', Charles University, Czech Republic

(short) Operating System Support for a Parallel DBMS with an Hierarchical Shared-Nothing Architecture
Leonid B. Sokolinsky, Chelyabinsk State University, Russia

(short) Possibilities of Supplementing an Information System with Knowledge Management Solutions
Saulius Maskeliunas, Institute of Mathematics and Informatics, Lithuania

(short) Framework for Application Development and its Use in COBISS Applications
Bojan Štok, Robert Vehovec
IZUM, Slovenia

Session 4B - Information Systems on the Internet
Chair: Ronald Maier, University of Regensburg

(short) Virtual University as a Web-based Information System
Hele-Mai Haav, Concordia International University, Estonia

(short) A Framework for Developing Web Based Information Systems
Milan Ojsteršek, Uroš Novak, Zlatko Èajiæ,
University of Maribor, Slovenia

(short) Performance Metering of Distributed Access Using Java Servlets
Andrew Yang, John Kim, Southern Connecticut State University, USA

(short) Recommending HTML-documents using Feature Guided Automated Collaborative Filtering
Gabriela Polèicova, Comenius University Bratislava, Slovakia

Session 5 - Invited talk 2
Chair: Jozsef Gyorkos, University of Maribor

Trust for Electronic Commerce Transactions

Prof. Dr. Günther Pernul, Dep. of Information Systems, University of Essen, Germany

Dr. Günther Pernul is currently a full professor at the Department of Information Systems at the University of Essen, Germany. His research interests are electronic commerce and new media, information systems security, advanced database applications, applied cryptography. Dr. Günther Pernul is co-author of a database text book, has edited or co-edited three books, published in scientific journals and conference proceedings on various information systems topics and participated in European funded research projects on the security of interoperable databases and data warehouses.

Short description of the talk:

The dramatic changes in telecommunications and computing technology as evidenced in the Internet and World Wide Web have sparked a revolution in electronic commerce (e-commerce) and e-commerce applications. But in spite of the well-publicized success stories, many businesses and consumers are also cautious about participating in e-commerce, and security concerns are often cited as being the single most important barrier. In this talk, we identify security and fairness in electronic commerce transactions as basic requirements demanded by any participant in electronic markets. We address the phases information, negotiation and execution of an electronic commerce transaction and discuss security requirements which we feel are important to guarantee during each of the phases. In order to develop trust for electronic commerce transactions we propose 1. COPS, a technical infrastructure for building adaptable electronic markets with main focus on security and fairness, and 2. MOSS, a business process reengineering methodology for analyzing and modeling the security semantics of traditional business transactions in order to transfer them to electronic markets. Both, COPS and MOSS are helpful to control the risks involved in dealing (trading) with untrusted parties in an open electronic commerce environment.

Session 6A - Agent Technology
Chair: Claus-Dieter Schewe, Clausthal Technical University

Workflow Management System Using Mobile Agents
Zoran Budimac, Mirjana Ivanoviæ, Aleksandar Popoviæ
University of Novi Sad, FR Yugoslavia

(short) Interoperability in an Agent-based Workflow System
Robert T. Leskovar, József Györkös
University of Maribor, Slovenia

(short) Autonomous Agent Negotiation for Electronic Commerce
Chionh Wei Peng, Chi Chi Hung, National University of Singapore Chionh, Singapore

Session 6B - Data Mining
Chair: Peter Kokol, University of Maribor

Pattern-Oriented Hierarchical Clustering
Tadeusz Morzy, Marek Wojciechowski, Maciej Zakrzewicz
Poznan University of Technology, Poland

Data Mining in a Multidimensional Environment
Holger Günzel, Jens Albrecht, Wolfgang Lehner
University of Erlangen-Nuremberg, Germany

Arbiter Meta-Learning with Dynamic Selection of Classifiers and its Experimental Investigation
Alexey Tsymbal, Seppo Puuronen, University of Jyvaskyla, Finland
Vagan Terziyan, Kharkov State Technical University of Radioelectronics, Ukraine

Session 7A - Data Modeling I
Chair: Tatjana Welzer, University of Maribor

The Notion of "Classes of a Path" in ER Schemas and its Use in Tackling Connection Problems in ER Modelling
Jun Kang Feng, Malcolm Crowe
Paisley University, United Kingdom

Evaluation of Data Modeling
Ronald Maier, University of Georgia, USA

Organizational Modeling for Efficient Specification of Information Security Requirements
Jussipekka Leiwo, Chandana Gamage, Yuliang Zheng
Monash University, Australia

Session 7B - Data Warehouse/Data Mining
Chair: Jaroslav Pokorny, Charles University

(short) Scaling Up Inductive Learning Algorithm for Data Mining
Fairouz Medjahed, G. Fernandez
ETSI Telecomunicacion, Spain

(short) On a Formal Model of an Object-Oriented Database with Views Supporting Data Materialisation
Robert Wrembel, Poznan University of Technology, Poland

(short) Design for Agent Warehouse: System Architecture and Implementation Considerations
John Sim W.T., Chi Chi Hung
National University of Singapore, Singapore

(short) The State of Databases and Data Warehouses in Slovene Organizations
Jurij Jakliè, Mojca Indihar Štemberger, Talib Damij, Janez Grad, Miro Gradišar, Andrej Kovaèiè, Gortan Resinoviè, Tomaž Turk
University of Ljubljana, Slovenia

(short) Mining Various Patterns in Sequential Data in an SQL-like Manner
Marek Wojciechowski
Poznan University of Technology, Poland

Session 8A - Data Modeling II
Chair: Albertas Caplinskas, Vilnius University

(short) Representing Design Patterns as Design Components
Mária Smolárová, Pavol Návrat
Slovak University of Technology, Slovakia

(short) Consequences of Attribute Redefinition on Inheritance of Statecharts
Heinz Frank, University of Klagenfurt, Austria

(short) Cardinality Constraints for n-ary Relationship Types
TomᚠDoležal, Charles University, Czech Republic

(short) Formalisation and Analysis of Dynamic Behaviour in Object-Oriented Systems
Yahia Rabih, Universite Clermont-Ferrand II, France

(short) Forms Management System
Sergio Gálvez, Antonio Guevara, Andrés Aguayo, José Luis Caro
Malaga University, Spain

Session 8B - Incomplete Data
Chair: Rainter Manthey, University of Bonn

A Closed Approach to Vague Collections in Partly Inaccessible Distributed Databases
Oliver Haase, NEC Europe LTD., Germany
Andreas Henrich, Otto-Friedrich Universitaet Bamberg, Germany

Infinite Relations in Paraconsistent Databases
Nicholas Tran, Rajiv Bagai
Wichita State University, USA

Session 9 - Invited talk 3
Chair: Bruno Stiglic, University of Maribor

A Family of the ODMG Object Models

Prof. Dr. Suad Alagic, Wichita State University, USA
Dr. Suad Alagic is a Computer Science Professor at the Wichita State University, USA. His research areas are Object-Oriented Systems, Database Systems, and Programming Languages and Systems. Dr. Suad Alagic published papers in Journal of Computer and Systems Sciences, Information Systems Journal, Computer Journal, Acta Informatica, Transactions on Information and Systems, Theoretical Computer Science, Object-Oriented Systems, Lecture Notes in Computer Science, Proceedings of ECOOP, OOPSLA, DBPL, POS, etc. Dr. Suad Alagic also published three books with Springer-Verlag: Object-Oriented Database Programming, Relational Database Technology, and The Design of Well-Structured and Correct Programs (translated into Japanese, Russian and Polish).

Short description of the talk:

The ODMG Standard is the only existing proposed standard for object-oriented databases. The main technical difficulties in this document come from a non-trivial challenge of providing a unified model and a technology for a variety of declarative and procedural object-oriented languages covered by the Standard. In addition, controversies are also caused by the model of persistence in the ODMG Standard. This invited talk will present an approach which resolves some of the problems in the ODMG Standard. The approach is based on a family of object models of the increasing level of sophistication.

Session 10A - Queries
Chair: Tomaz Mohoric, University of Ljubljana

Query Rewriting and Search in CROQUE
Joachim Kröger, University of Rostock, Germany
Regina Illner, Steffen Rost, IBM Deutschland Entwicklung GmbH, Germany
Andreas Heuer, University of Rostock, Germany

Object Query Optimization in the Stack-Based Approach
Jacek P³odzien, Anna Kraken,
Polish Academy of Science, Poland

(short) A Model that Simplifies the Coding of a Group of Object-Oriented Complex Queries
Reda Alhajj, American University fo Sharjah, U.A.E.

(short) Cost-Based Magic for Web Queries
Vladimir Zadorozhny, University of Maryland, USA

Session 10B - Current Technologies
Chair: Marjan Hericko, University of Maribor

Session 11A - Database Theory
Chair: Tadeusz Morzy, Poznan University of Technology

Compositional Specification Calculus for Information Systems Development
Leonid Kalinichenko, Russian Academy of Sciences, Russia

(short) Reflective Relational Machines of Bounded Variable Complexity
Jose Maria Turull Torres, National University of San Luis, National Technological
University, Argentina

(short) Partial and Complete Tuples and Sets in Deductive Databases
Mengchi Liu, University of Regina, Canada

(short) On a Galois Correspondence in Object Oriented Databases
Klaus-Dieter Schewe, Technical University of Clausthal, Germany

(short) Formal Specification of a Safe ALGEBRA - "A"
John Murphy, Lejla Rovèanin
Dublin City University, Ireland

Session 11B - Performance Issues
Chair: Vladimir Zadorozhny, University of Maryland

The Impact of Using Class Inheritance in a Distributed Information System
Patrick Dunne, BT Laboratories, United Kingdom
Alex Gray, University of Wales, United Kingdom

Performance Assesment Framework for Distributed Object Architecture
Matjaž B. Juriè, Tatjana Welzer, Ivan Rozman, Marjan Herièko, Boštjan Brumen, Tomaž Domajnko, Aleš Živkoviè
University of Maribor, Slovenia

Efficient Use of Signatures in Object-Oriented Database Systems
Kjetil Norvag, Norwegian University of Science and Technology, Norway

Closing of the Conference

The Award Ceremony for the best student paper
Prof. Dr. Ivan Rozman
University of Maribor, Slovenia
General Chair of the Conference ADBIS '99

Overview of the ADBIS activities and a look into the future
Prof. Dr. Leonid Kalinichenko
Russian Academy of Sciences, Russia

Announcement of the ADBIS'2000 Conference
Prof. Dr. Jaroslav Pokorny
Charles University, Czech Republic
General Chair of the 2000 ADBIS - DA SFAA Conference

Last change: August 20, 1999