- The management of changing types in an object-oriented database
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Skarra, A
Zdonik, S
... such may be modified and shared. The effects of changing a type extend to objects of the type and to programs that use objects of the ...
Publication - cat - 06/15/2023 - 14:51 - 0 comments - 1 attachment
- Schema Evolution in Heterogeneous Database Architectures, A Schema Transformation Approach
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McBrien, P; Poulovassilis, A
Author:
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Poulovassilis, A
Year:
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Publication - cat - 09/13/2022 - 17:45 - 0 comments - 0 attachments
- A Unifying Framework for Version Control in a CAD Environment
... design (CAD) systems. In this paper we address a broad spectrum of semantic and operational issues in version control for a public/private distributed architecture of CAD systems. The research issues ...
Publication - cat - 07/28/2016 - 08:29 - 0 comments - 0 attachments
- Combining and relating ontologies: an analysis of problems and solutions
... have become even more important. Although there is already a lot of research done in this area, there are still many open questions. In ... paper we try to classify the problems that may arise into a common framework. We then use that framework to examine several projects that ...
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
... 11.7 KB
A methodology for extracting an extended Entity-Relationship (EER) model from a relational database is presented. Through a combination of data schema and data instance analysis, an EER model is ...
Publication - cat - 04/17/2013 - 13:27 - 0 comments - 1 attachment
- Ontology Versioning in an Ontology Management Framework
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Noy, Natalya Fridman; Musen, Mark A.
Author:
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As ontology development becomes a more ubiquitous and collaborative process, developers face challenges in ...
Publication - cat - 04/17/2013 - 13:05 - 0 comments - 0 attachments
- On Schema Evolution in Multidimensional Databases
... 277.31 KB
Database systems offering a multidimensional schema on a logical level (e.g. OLAP systems) are often used in data warehouse ...
Publication - cat - 04/17/2013 - 12:49 - 0 comments - 1 attachment
- Schema evolution in OODBs using class versioning
... KB
This paper describes work carried out on a model for the versioning of class definitions in an object-oriented database. ... on attributes of the previous and current version of a class definition, instances of any version of the class can be converted to ...
Publication - cat - 04/17/2013 - 12:38 - 0 comments - 1 attachment
- Schema and ontology matching with COMA++
... COMA++. It extends our previous prototype COMA utilizing a composite approach to combine different match algorithms [3]. COMA++ implements significant improvements and offers a comprehensive infrastructure to solve large real-world match problems. It ...
Publication - Anonymous - 04/17/2013 - 11:16 - 0 comments - 1 attachment
- Transforming Heterogeneous Data with Database Middleware: Beyond Integration
... sources.
To be effective, such systemsmust provide a unified, queryable schema, and must be able to transform data from different ... to connect to several information sources makes them a natural base for doing
more complex transformations as well. In this paper, ...
Publication - massmann - 04/17/2013 - 10:38 - 0 comments - 1 attachment
- RiMOM: A Dynamic Multistrategy Ontology Alignment Framework
... to improve the matching effectiveness. This paper presents a dynamic multistrategy ontology alignment framework, named RiMOM. The key ... between ontologies may vary widely. We propose a systematic approach to quantitatively estimate the similarity characteristics ...
Publication - george - 04/17/2013 - 10:38 - 0 comments - 0 attachments
- Quantifying Schema Evolution
... for database applications. The paper presents a method for measuring
modifications to database schemata and their consequences, by using a thesaurus tool.
Measurements of the evolution of a large-scale database application currently running in
several hospitals in ...
Publication - cat - 04/17/2013 - 10:27 - 0 comments - 0 attachments
- EXPRESS: A Data EXtraction, PRocessing, and REStructuring System
... prototype data translation system which can access a wide
variety of data and restructure it for new uses. The system is driven ... presented.
The DEFINE description is compiled into a customized PL/l program for accessing source
data. The restructuring ...
Publication - erhard - 04/17/2013 - 10:16 - 0 comments - 0 attachments
- A Model for Compound Type Changes Encountered in Schema Evolution
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Schema evolution is a problem that is faced by long-lived data. When a schema changes, existing persistent data can become inaccessible unless the ... the database maintainer can perform. We have developed a model of type changes involving multiple types. The model describes both type ...
Publication - erhard - 04/17/2013 - 10:05 - 0 comments - 1 attachment
- Update Semantics of Relational Views
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100 - 499
A database view is a portion of the data structured in a way suitable to a specific
on views ...
Publication - erhard - 04/17/2013 - 09:38 - 0 comments - 0 attachments
- Updating Relational Databases through Object-Based Views
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Keller, A
Wiederhold, G
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The view-object model provides a formal basis for representing
and manipulating object-based views on ...
Publication - erhard - 04/17/2013 - 09:38 - 0 comments - 0 attachments
- Translating Web Data
... problem in modern information systems. We present a novel framework for mapping among XML and relational schemas in which a high-level mapping is translated into semantically meaningful queries that ... Our approach works in two phases. In the rst phase, a high-level mapping, expressed as a set of attribute-to-attribute ...
Publication - massmann - 04/17/2013 - 09:27 - 0 comments - 0 attachments
- Types of software evolution and software maintenance
... of both practitioners and researchers would be helped by a more objective and finer granularity recognition of types of software ... as actually done. To these ends, this paper proposes a clarifying redefinition of the types of software evolution and software ...
Publication - erhard - 04/17/2013 - 09:16 - 0 comments - 0 attachments
- Maintenance of views
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Shmueli, O; Itai, A
Author:
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Itai, A
Year:
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Publication - cat - 04/17/2013 - 08:05 - 0 comments - 1 attachment
- User-Driven Ontology Evolution Management
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Maedche, A
Motik, B
... complexity of change management increases, thus requiring a well-structured ontology evolution process. In this paper we identify a ...
Publication - erhard - 04/17/2013 - 08:05 - 0 comments - 1 attachment
- Data integration by bi-directional schema transformation rules
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McBrien, P; Poulovassilis, A
Author:
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Poulovassilis, A
Year:
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Publication - cat - 04/17/2013 - 07:16 - 0 comments - 0 attachments
- A Transparent Schema-Evolution System Based on Object-Oriented View Technology
... 100 - 499
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 ...
Publication - cat - 04/17/2013 - 06:38 - 0 comments - 0 attachments
- Maintaining Data Warehouses over Changing Information Sources.
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Rundensteiner, Elke A.; Koeller, Andreas; Zhang, Xin
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Koeller, A
Zhang, X
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Publication - cat - 04/17/2013 - 06:16 - 0 comments - 1 attachment
- Schema Evolution in Database Systems: An Annotated Bibliography.
... 36.23 KB
Schema Evolution is the ability of a database system to respond to changes in the real world by allowing the ... to evolve. In many systems this property also implies a retaining of past states of the schema. This latter property is necessary if ...
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 ... is the modification of an existing ontology in response to a certain need for change. This problem is a complex and multifaceted one, ...
Publication - cat - 04/17/2013 - 04:27 - 0 comments - 1 attachment