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Constraints and Extended Support for Storage and Access
Start date:1994-01-01
End date:1996-12-31
Project Acronym:CONTESSA
Project status:Completed
Coordinator
| Organization name:European Computer-Industry Research Centre GmbH | |
| Contact person | Address |
|
Name:Mark |
Forschungszentrum Arabellastraße 17 81925 München DEUTSCHLAND Region:BAYERN OBERBAYERN München, Kreisfreie Stadt |
| Tel:+49-89-92699115 | |
| Fax:+49-89-92699170 | |
| E-mail: | |
| URL: | Organization Type:Research |
Description
Objective:
The main objective of this proposal is to study the storage of constraints in databases, the use of constraint handling techniques in database query and update, and the incorporation of constraints in object data modelling and database specification. The recent success of the constraint-based programming paradigm is based on the direct contribution of constraints to program specification, implementation and maintenance. Constraints are the normal language of discourse for many high-level applications; built-in constraint solvers and active constraints contribute to efficient implementation; and the clarity and brevity of constraint programs simplify program maintenance.
Achievements:
General information:
ACTIVITIES
The formal properties of constraints in databases and database queries will be studied; their role in query optimisation; the consequences of stored constraints on database indexing; constraints on stored objects; and the relationship between active constraints and integrity constraints. On the practical side, the focus is on supporting the decision making process by the application of constraint handling techniques to large scale geographical data bases. The techniques will also be applied to commercially motivated problems of scheduling and tutoring. It is planned to use the working group to build a long-lasting European Interest Group which will drive and exploit continuing research and development in the field of Constraint Databases. Through regular workshops, it is hoped to attract representatives of European industry and the public sector, as well as the academic community.
POTENTIAL
We seek to lay the foundations for a technology with considerable market potential. Within Europe there is a firmly established need for systems supporting complex information and decision making. We identify in particular: the aerospace industry; earth observation; air and ground transportation control; telecommunications network planing and signal routing; town and environmental planning; and production, maintenance and servicing in manufacturing.
Project Details
Start date:1994-01-01
End date:1996-12-31
Duration:36 months
Project Reference:8666
Project cost:
Project Funding:
Programme Acronym:
ESPRIT 3
Programme type:Third Framework Programme
Subprogramme Area:
Contract type:No contract type
URL:
Subject index:Electronics, Microelectronics, Information Processing, Information Systems
Other Indexes:
Other participants
| Organization name:PARIS RESEARCH LABORATORY DIGITAL EQUIPMENT | |
| Contact person | Address |
|
Name:Andreas |
85 AVENUE VICTOR HUGO 92563 RUEIL-MALMAISON FRANCE Region:ÎLE DE FRANCE Ile de France Hauts-de-Seine |
| Tel:+33-1-47142841 | |
| Fax:+33-1-47142899 | |
| E-mail: | |
| URL: | Organization Type: |
| Organization name:National Technical University of Athens | |
| Contact person | Address |
|
Name:Foto |
Heroon Polytechniou 9 15773 Zographou, Athens HELLAS Region:ATTIKI |
| Tel:+30-210-7757401 | |
| Fax:+30-210-7784578 | |
| E-mail:Contact | |
| URL: | Organization Type:Education |
| Organization name:TECHNICAL UNIVERSITY VIENNA | |
| Contact person | Address |
|
Name:Andrew |
GUSSHAUSSTRASSE, 27/29 1040 WIEN ÖSTERREICH Region:OSTÖSTERREICH WIEN |
| Tel:+43-1-588013786 | |
| Fax:+43-1-5043535 | |
| E-mail: | |
| URL: | Organization Type: |
| Organization name:Humboldt-Universität zu Berlin | |
| Contact person | Address |
|
Name:Oliver |
Spandauerstraße 1 10178 Berlin DEUTSCHLAND Region:BERLIN |
| Tel:+49-30-2468642 | |
| Fax:+49-30-2468341 | |
| E-mail:Contact | |
| URL: | Organization Type: |
| Organization name:HUMBOLDT UNIVERSITAET ZU BERLIN | |
| Contact person | Address |
|
Name:Johann-Christoph |
Unter den Linden 6 BERLIN DEUTSCHLAND Region:BERLIN |
| Tel:+49-30-20933009 | |
| Fax:+49-30-20933010 | |
| E-mail:Contact | |
| URL:http://www.hu-berlin.de | Organization Type:Education |
| Organization name:UNIVERSITY OF TWENTE | |
| Contact person | Address |
|
Name: |
DRIENERLOLAAN, 217 7500 AE ENSCHEDE NEDERLAND Region:OOST-NEDERLAND OVERIJSSEL Twente |
| Tel:+31-53-893753 | |
| Fax:+31-53-336905 | |
| E-mail: | |
| URL: | Organization Type: |
Record control number:22037