Abstract: "When a database is shared by many users, updates to the database schema are almost always prohibited because there is a risk of making existing application programs obsolete when they run against the modified schema. This paper addresses the problem by integrating schema evolution with view facilities. Each user is assigned his or her own database view, and develops application programs against the view. When new requirements necessitate schema updates for a particular user, then the user specifies schema changes to his personal view rather than to the shared base schema. Our view schema evolution approach then computes a new view schema that reflects the semantics of the desired schema change, and replaces the old view with the new one. This approach provides the means for schema change without affecting other views (and thus without affecting existing application programs). The persistent data is shared by different views of the schema, i.e. by both old as well as newly developed applications can continue to interoperate. To realize our approach, this paper identifies key features of how views must be extended to be capacity- augmenting. We then present algorithms that implement the set of typical schema evolution operations as view definitions. Throughout the paper we present examples that demonstrate our approach."

The Ninth International Workshop on Foundations of Models and Languages for Data and Objects (FoMLaDO) took place in Dagstuhl Germany, Sept- ber 18{21, 2000. The topic of this workshop was Database schema Evolution and Meta-Modeling; this FoMLaDO Workshop was hence assigned the acronym DEMM 2000. These post-proceedings contain the revised versions of the accepted papers of the DEMM 2000 workshop. Twelve regular papers were accepted for inclusion in the proceedings. The papers address the following issues: { Consistency of evolving concurrent information systems { Adaptive speci cations of technical information systems { Change propagation in schema evolution of object-based systems { Evolving software of a schema evolution system { Logical characterization of schema evolution { Con?ict management in integrated databases { Evolving relation schemas { Conceptual descriptions of adaptive information systems { OQL-extensions for metadata access { Metamodeling of schema evolution { Metrics for conceptual schema evolution { Incremental datawarehouse construction In addition to the regular papers, there is an invited paper by Can Turk ̈ er on schema evolution in SQL99 and (object-)relational databases. Acknowledgements: We wish to thank the program committee members for their work on reviewing the submitted papers. We also wish to thank all a- hors for submitting papers to this workshop. Moreover, all participants of the workshop are thanked for contributing to lively discussions. Thanks also to Elke Rundensteiner, who delivered an invited talk on the SERF-project concerning ?exible database transformations.

The Sorbonne University is very proud to host this year the oms Conference on Object Oriented Information Systems. There is a growing awareness of the importance of object oriented techniques, methods and tools to support information systems engineering. The term information systems implies that the computer based systems are designed to provide adequate and timely information to human users in organizations. The term engineering implies the application of a rigorous set of problem solving approaches analogous to those found in traditional engineering disciplines. The intent of this conference is to present a selected number of those approaches which favor an object oriented view of systems engineering. oms '98 is the fifth edition of a series of conferences. Starting in 1994 in London, this series evolved from a British audience to a truly European one. The goal is to build a world wide acknowledged forum dedicated to object oriented information systems engineering. This conference is organized with the aim to bring together researchers and practitioners in Information Systems, Databases and Software Engineering who have interests in object oriented information systems. The objective is to advance understanding about how the object technology can empower information systems in organizations, on techniques for designing effective and efficient information systems and methods and development tools for information systems engineering. The conference aims also at discussing the lessons learned from large scale projects using objects. The call for oms was given international audience.

This book constitutes the refereed proceedings of the 8th International Conference on Object-Oriented Information Systems, OOIS 2002, held in Montpellier, France, in September 2002. The 34 revised full papers and 17 short papers presented were carefully reviewed and selected from 116 submissions. The papers are organized in topical sections on developing web services, object databases, XML and web, component and ontology, UML modeling, object modeling and information systems adaptation, e-business models and workflow, performance and method evaluation, programming and tests, software engineering metries, web-based information systems, architecture and Corba, and roles and evolvable objects.

This book presents the refereed proceedings of the 8th International Conference on Advanced Information Systems Engineering, CAiSE '96, held in Herakleion, Crete, Greece, in May 1996. The 30 revised full papers included in the book were selected from a total of some 100 submissions. The book is organised in sections on CASE environments, temporal and active database technologies, experience reports, interoperability in information systems, formal methods in system development, novel architectures, workflow management and distributed information systems, information modelling, object-oriented database design, and semantic links and abstraction.

OOIS'95 (Object-Oriented Information Systems '95) contains contributions from leading researchers and practitioners working on object oriented technology and its application in information systems design and development. The book has a strong practical focus and contains much technical insight of particular relevance to professionals working in the field. The papers cover two main areas of the field: academic research trends into object oriented concepts and principles, and state of the art applications in industry. Among the specific topics covered are modelling, knowledgebases, software development, interface design, object databases, distributed databases, and emerging object technologies. All those working in the field of information technology will find the book a useful source of reference.