Download or read book Lasy Schema Evolution in Object oriented Databases written by Yin Cheung and published by . This book was released on 2001 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Schema Evolution in Object oriented Databases written by Xue Li and published by . This book was released on 1997 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Database Schema Evolution and Meta Modeling written by Herman Balsters and published by Springer. This book was released on 2003-06-29 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Schema Evolution for Real time Object oriented Databases written by University of Michigan. Dept. of Electrical Engineering and Computer Science. Computer Science and Engineering Division and published by . This book was released on 1994 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "It has been shown that the database schemata often experience considerable changes during the development and initial use phases of database systems for advanced applications, such as automated manufacturing and computer-aided design. An automated schema evolution system can significantly reduce the amount of work and potential errors related to schema changes. Although schema evolution for non-real-time databases was the subject of some previous research, its impact on real- time database systems remains unexplored. Since these advanced applications typically utilize object-oriented models to handle complex data types and there exists no agreed-upon real-time object model that can be used as foundation to define a schema evolution framework, we first design a conceptual real-time object-oriented data model, called ROMPP. It captures the key characteristics of real-time applications, namely, timing constraints and performance polymorphism. It uses specialization dimensions to model timing specifications and letter class hierarchies to capture performance polymorphism. We then re-evaluate previous (non-real- time) schema evolution support in the context of real-time databases, which results in several modifications to the semantics of schema changes and to the needs of schema change resolution rules and schema invariants. Furthermore, we expand the schema change framework with new constructs -- including new schema change operators, new resolution rules, and new invariants -- for handling additional features of the real-time object model."

Download or read book Semantics and Implementation of Schema Evolution in Object oriented Databases written by Jay Banerjee and published by . This book was released on 1986 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Schema Evolution in Object Oriented Database Systems written by Christine Delcourt and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Model for Schema Evolution in Object oriented Database Systems written by Simon Monk and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Schema Evolution Issues in Object oriented Databases written by Dragos Luchian and published by . This book was released on 1995 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Schema evolution in object oriented persistent databases written by Jay Banerjee and published by . This book was released on 1986 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalog Constraints and Algorithms for Schema Evolution in Temporal Object oriented Databases written by Saurabh Chadha and published by . This book was released on 1996 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Extensible Schema Evolution Framework for Object oriented Databases Using OQL written by Jing Jin and published by . This book was released on 1998 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Schema Evolution in Object oriented Database Systems written by Gia-toan Nguyen and published by . This book was released on 1988 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: It extends previous classification mechanisms with a dynamic capability which adequately supports evolving class definitions and instances."

Download or read book Database Schema Evolution and Meta Modeling written by Herman Balsters and published by Springer. This book was released on 2003-06-29 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book PSYCHO written by and published by . This book was released on 1987 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Transparent Object oriented Schema Change Approach Using View Evolution written by University of Michigan. Dept. of Electrical Engineering and Computer Science. Computer Science and Engineering Division and published by . This book was released on 1994 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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."

Download or read book An Object oriented Versioning Approach for Multidimensional Database Schema Evolution written by Somchart Fugkeaw and published by . This book was released on 2004 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fundamentals of Object Databases written by Suzanne Dietrich and published by Springer Nature. This book was released on 2022-05-31 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: Object-oriented databases were originally developed as an alternative to relational database technology for the representation, storage, and access of non-traditional data forms that were increasingly found in advanced applications of database technology. After much debate regarding object-oriented versus relational database technology, object-oriented extensions were eventually incorporated into relational technology to create object-relational databases. Both object-oriented databases and object-relational databases, collectively known as object databases, provide inherent support for object features, such as object identity, classes, inheritance hierarchies, and associations between classes using object references. This monograph presents the fundamentals of object databases, with a specific focus on conceptual modeling of object database designs. After an introduction to the fundamental concepts of object-oriented data, the monograph provides a review of object-oriented conceptual modeling techniques using side-by-side Enhanced Entity Relationship diagrams and Unified Modeling Language conceptual class diagrams that feature class hierarchies with specialization constraints and object associations. These object-oriented conceptual models provide the basis for introducing case studies that illustrate the use of object features within the design of object-oriented and object-relational databases. For the object-oriented database perspective, the Object Data Management Group data definition language provides a portable, language-independent specification of an object schema, together with an SQL-like object query language. LINQ (Language INtegrated Query) is presented as a case study of an object query language together with its use in the db4o open-source object-oriented database. For the object-relational perspective, the object-relational features of the SQL standard are presented together with an accompanying case study of the object-relational features of Oracle. For completeness of coverage, an appendix provides a mapping of object-oriented conceptual designs to the relational model and its associated constraints. Table of Contents: List of Figures / List of Tables / Introduction to Object Databases / Object-Oriented Databases / Object-Relational Databases