- The management of changing types in an object-oriented database
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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
- Combining and relating ontologies: an analysis of problems and solutions
... Although there is already a lot of research done in this area, there are still many open questions. In this paper we try to classify the problems that may arise into a common ...
Publication - admin - 07/26/2016 - 16:40 - 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
- Schema and ontology matching with COMA++
... OWL. COMA++ includes new approaches for ontology matching, in particular the utilization of shared taxonomies. Furthermore, different ...
Publication - Anonymous - 04/17/2013 - 11:16 - 0 comments - 1 attachment
- Transforming Heterogeneous Data with Database Middleware: Beyond Integration
... base for doing
more complex transformations as well. In this paper, we look at database middleware systems as tranformation engines, ...
Publication - massmann - 04/17/2013 - 10:38 - 0 comments - 1 attachment
- RiMOM: A Dynamic Multistrategy Ontology Alignment Framework
... alignment identifies semantically matching entities in different ontologies. Various ontology alignment strategies have been ... ontology alignment framework, named RiMOM. The key insight in this framework is that similarity characteristics between ontologies may ...
Publication - george - 04/17/2013 - 10:38 - 0 comments - 0 attachments
- Quantifying Schema Evolution
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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
- Update Semantics of Relational Views
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A database view is a portion of the data structured in a way suitable to a specific
on views must be translated into updates on the underlying database. This
translation process in the relational model.
The procedure is as follows: first, a “complete” ...
Publication - erhard - 04/17/2013 - 09:38 - 0 comments - 0 attachments
- 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
- Translating Web Data
... Venue:
In Proceedings of VLDB, pages 598--609, 2002
...
Mapping and translating data stored in dierent formats continues to be an important problem in modern information ...
Publication - massmann - 04/17/2013 - 09:27 - 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
- Maintenance of views
... 970.14 KB
In relational databases a view definition is a query against the database, and ... materialization over a database may change as relations in the database undergo modificationsIn this paper a mechanism is proposed in which the view is materialized at all times The problem which this mechanism ...
Publication - cat - 04/17/2013 - 08:05 - 0 comments - 1 attachment
- 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
- Data integration by bi-directional schema transformation rules
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100 - 499
In this paper we describe a new approach to data integration which subsumes the ...
Publication - cat - 04/17/2013 - 07:16 - 0 comments - 0 attachments
- 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
- Schema Evolution in Database Systems: An Annotated Bibliography.
... is the ability of a database system to respond to changes in the real world by allowing the schema to evolve. In many systems this property also implies a retaining of past states of the ...
Publication - cat - 04/17/2013 - 05:16 - 0 comments - 1 attachment
- Ontology change: classification and survey
... 1.67 MB
Ontologies play a key role in the advent of the Semantic Web. An important problem when dealing with ontologies is the modification of an existing ontology in response to a certain need for change. This problem is a complex and ... as the same term is often used with different meanings in the relevant literature, creating a certain amount of confusion. The purpose ...
Publication - cat - 04/17/2013 - 04:27 - 0 comments - 1 attachment
- Ontology matching with semantic verification
... that it does not contain semantic inconsistencies.
In this paper,we describe the ASMOV algorithm, and then present experimental ...
Publication - cat - 04/17/2013 - 03:49 - 0 comments - 1 attachment