Search: in, no paper type, 100 - 499

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The management of changing types in an object-oriented database

... KB We examine the problem of type evolution in an object-oriented database environment. Type definitions are persistent objects in the database and as such may be modified and shared. The effects of changing ...

Publication - cat - 06/15/2023 - 14:51 - 0 comments - 1 attachment

Schema Evolution in Heterogeneous Database Architectures, A Schema Transformation Approach

... integration and schema evolution into one framework. In previous work we have developed a general framework to support schema transformation and integration in heterogeneous database architectures. Here we show how this framework also ...

Publication - cat - 09/13/2022 - 17:45 - 0 comments - 0 attachments

A Unifying Framework for Version Control in a CAD Environment

... of the most important functions which need to be supported in integrated computer-aided design (CAD) systems. In this paper we address a broad spectrum of semantic and operational issues in ...

Publication - cat - 07/28/2016 - 08:29 - 0 comments - 0 attachments

Reverse engineering of relational databases: Extraction of an EER model from a relational database

... These have been demonstrated to be implementable in a knowledge-based system; a working prototype system which does so is briefly discussed. In addition, cases in which human input is required are also clearly identified. This research ...

Publication - cat - 04/17/2013 - 13:27 - 0 comments - 1 attachment

Ontology Versioning in an Ontology Management Framework

... and collaborative process, developers face challenges in managing multiple ontologies, including comparing, aligning, and merging ... different formalisms. The uniform framework presented in this article assists users with these tasks by leveraging data and algorithms developed for one tool in other tools. (Journal, no paper type, Ontology Alignment, Ontology ...

Publication - cat - 04/17/2013 - 13:05 - 0 comments - 0 attachments

On Schema Evolution in Multidimensional Databases

... on a logical level (e.g. OLAP systems) are often used in data warehouse environments. The user requirements in these dynamic application areas are subject to frequent changes. This ...

Publication - cat - 04/17/2013 - 12:49 - 0 comments - 1 attachment

Schema evolution in OODBs using class versioning

... out on a model for the versioning of class definitions in an object-oriented database. By defining update and backdate functions on ... an old version of the schema to still use data created in the format of the changed schema. (no paper type, object-oriented, ...

Publication - cat - 04/17/2013 - 12:38 - 0 comments - 1 attachment

Quantifying Schema Evolution

... Achieving correct changes is the dominant activity in the application software industry. Modification of database schemata is ... of a large-scale database application currently running in several hospitals in the UK are presented and interpreted. The kind of ...

Publication - cat - 04/17/2013 - 10:27 - 0 comments - 0 attachments

EXPRESS: A Data EXtraction, PRocessing, and REStructuring System

... for accessing source data. The restructuring specified in CONVERT is compiled into a set of customized PL/l procedures to derive ... requests. The architecture of EXPRESS allows efficiency in execution by avoiding unnecessary secondary storage references while at the ...

Publication - erhard - 04/17/2013 - 10:16 - 0 comments - 0 attachments

A Model for Compound Type Changes Encountered in Schema Evolution

... and then produces a transformer that can update data in a database to correspond to a newer version of the schema. (no paper ...

Publication - erhard - 04/17/2013 - 10:05 - 0 comments - 1 attachment

Updating Relational Databases through Object-Based Views

... manipulating object-based views on relational databases. In this paper, we present a scheme for handling update operations on view ...

Publication - erhard - 04/17/2013 - 09:38 - 0 comments - 0 attachments

Types of software evolution and software maintenance

... The past two decades have seen increasing sophistication in software work. Now and in the future, the work of both practitioners and researchers would be helped ...

Publication - erhard - 04/17/2013 - 09:16 - 0 comments - 0 attachments

User-Driven Ontology Evolution Management

... ontology must be evolved as well. As ontologies grow in size, the complexity of change management increases, thus requiring a well-structured ontology evolution process. In this paper we identify a possible six-phase evolution process and focus on ...

Publication - erhard - 04/17/2013 - 08:05 - 0 comments - 1 attachment

A Transparent Schema-Evolution System Based on Object-Oriented View Technology

... view system to support capacity-augmenting views. In this paper, we present algorithms that implement the complete set of typical ...

Publication - cat - 04/17/2013 - 06:38 - 0 comments - 0 attachments

Automating the transformation of XML documents

... must thus be created manually on a case-by-case basis. In this paper, we explore the problem of how to automate the transformation of ...

Publication - cat - 04/16/2013 - 22:27 - 0 comments - 1 attachment

A component-based framework for ontology evolution

... for ontology evolution becomes extremely important in distributed development and use of ontologies. Information about change can be represented in many different ways. We describe these different representations and ... integrates them. We show how different representations in the framework are related by describing some techniques and heuristics ...

Publication - cat - 04/16/2013 - 21:38 - 0 comments - 1 attachment

Using Schema Matching to Simplify Heterogeneous Data Translation

... A broad spectrum of data is available on the Web in distinct heterogeneous sources, and stored under different formats. ... and conversion mechanisms increases greatly. In this paper we present a new translation system, based on ...

Publication - admin - 04/16/2013 - 17:16 - 0 comments - 1 attachment

A framework for modeling and evaluating automatic semantic reconciliation

... , new tools for automating the process were proposed.In this work we present a formal model of semantic reconciliation and analyze in a systematic manner the properties of the process outcome, primarily the ...

Publication - admin - 04/16/2013 - 13:16 - 0 comments - 1 attachment

Management Of Schema Evolution In Databases

... which takes evolution into account. Its originality is in allowing the development of partial schema versions, or views of a schema. These versions are created in the same database from a common schema. We define the set of authorised ...

Publication - cat - 04/16/2013 - 11:38 - 0 comments - 1 attachment

Ontology Evolution: Not the Same as Schema Evolution

... will allow us to build on the extensive research in schema evolution. However, there are also important differences between ... knowledge models. A lot of problems that existed only in theory in database research come to the forefront as practical problems in ...

Publication - cat - 04/16/2013 - 04:49 - 0 comments - 0 attachments

Dynamic Workflow Schema Evolution Based on Workflow Type Versioning and Workflow Migration

... An important yet open problem in workflow management is the evolution of workflow schemas, i.e., the creation, deletion and modification of workflow types in such a way that the schema remains correct. This problem is aggravated when ...

Publication - cat - 04/16/2013 - 02:16 - 0 comments - 0 attachments

Ontology versioning on the Semantic Web

... changes, adaptations to different tasks, or changes in the conceptualization require modifications of the ontology. The evolution ... of ontology versioning. Inspired by the work done in database schema versioning and program interface versioning, it will also ...

Publication - cat - 04/16/2013 - 01:05 - 0 comments - 0 attachments

Consistent evolution of OWL ontologies

... Support for ontology evolution is extremely important in ontology engineering and application of ontologies in dynamic environments. A core aspect in the evolution process is the to ...

Publication - cat - 04/16/2013 - 00:27 - 0 comments - 1 attachment

Managing Evolving Workflow Specifications

... the real process is one of the most important challenges in workflow management. In this paper, we present an approach for the management of evolving workflow ...

Publication - cat - 04/16/2013 - 00:05 - 0 comments - 0 attachments

Version support for engineering database systems

... 100 - 499 In engineering applications, multiple copies of object descriptions have to coexist in a single database. A scheme is proposed that enables users to explicitly ...

Publication - cat - 04/15/2013 - 22:49 - 0 comments - 0 attachments