Search: in, Schema Evolution, 2009

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Evaluating the validity of data instances against ontology evolution over the Semantic Web

... invalid, and as a result, may become non-interpretable. In this paper, we address precisely this problem, validity of data instances ... one component imply semantic changes to other components in the ontology. Third, we propose a validity identification approach that ...

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

The PRISM Workwench: Database Schema Evolution Without Tears

... to a perpetual evolution, which is particularly pressing in Web Information Systems, due to their distributed and often collaborative ... logical independence, and auditability of the process. In fact, PRISM exploits recent theoretical results on mapping composition, ...

Publication - krlis1337 - 04/17/2013 - 11:05 - 0 comments - 0 attachments

Ontology and Schema Evolution in Data Integration: Review and Assessment

... have led to the adoption of data integration systems in order to deal with information extraction from disparate sources. The ... and ontologies has been recognized as a cornerstone issue in bringing in legacy data with formal semantic meaning. However, our knowledge ...

Publication - cat - 04/17/2013 - 09:49 - 0 comments - 0 attachments

PRIMA: Archiving and Querying Historical Data with Evolving Schemas

... Schema evolution poses serious challenges in historical data management. Traditionally the archival data has been (i) ... or (ii) maintained under the original schema version in which they firstly appeared, leading to a perfect archival quality, but to a ...

Publication - krlis1337 - 04/17/2013 - 07:27 - 0 comments - 0 attachments

Evolva: A Comprehensive Approach to Ontology Evolution

... Ontology evolution is increasingly gaining momentum in the area of Semantic Web research. Current approaches target the evolution in terms of either content, or change management, without covering both aspects ...

Publication - cat - 04/17/2013 - 05:49 - 0 comments - 0 attachments

On Detecting High-Level Changes in RDF/S KBs

... differences between (two) versions of the same ontology in order to store or visualize their deltas is a challenging task for e-science. In this paper, we focus on languages allowing the formulation of concise and ...

Publication - cat - 04/17/2013 - 05:49 - 0 comments - 1 attachment

Oracle Edition-Based Redefinition

... using the pre-upgrade application, it can be retired. In other words, the application as a whole enjoys hot rollover from the ...

Publication - cat - 04/17/2013 - 03:38 - 0 comments - 1 attachment

Online reorganization of databases

... a14-sockut.pdf 865.38 KB In practice, any database management system sometimes needs reorganization, that is, a change in some aspect of the logical and/or physical arrangement of a database. In ...

Publication - cat - 04/16/2013 - 19:49 - 0 comments - 1 attachment

Toward Formal Semantics for Data and Schema Evolution in Data Stream Management Systems

... result streams to standing queries, and often operate in a context where any interruption can lead to data loss. Support for schema evolution in continuous query processing is currently unaddressed. In this work we ...

Publication - cat - 04/16/2013 - 08:27 - 0 comments - 0 attachments

Automating Database Schema Evolution in Information System Upgrades

... Hot Topics In Software Upgrade URL:  ... evolution process is the source of incessant problems in the life of information systems and a major stumbling block that prevent ...

Publication - krlis1337 - 04/16/2013 - 05:16 - 0 comments - 0 attachments

Rule-based Management of Schema Changes at ETL sources

... 210.1 KB In this paper, we visit the problem of the management of inconsistencies ...

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

Policy-regulated Management of ETL Evolution

... 10 - 49 In this paper, we discuss the problem of performing impact prediction for changes that occur in the schema/structure of the data warehouse sources. We abstract ... of our approach over real-world ETL workflows used in the Greek public sector. (Data Warehouses, ETL, Evolution, Impact of ...

Publication - gpapas - 04/16/2013 - 04:05 - 0 comments - 0 attachments

tXSchema: Support for data-and schema-versioned XML documents

... versioning, respectively, then lists design decisions made in XSchema concerning that challenge. Theoretical considerations (separately ... considerations, and implementation details are discussed in that order in each of the two parts. Each part ends with full example ...

Publication - cat - 04/16/2013 - 01:49 - 0 comments - 1 attachment

Efficient Management of Biomedical Ontology Versions

... Ontologies have become very popular in life sciences and other domains. They mostly undergo continuous changes and ... studies do not consider the ontology changes reflected in different versions but typically limit themselves to a specific ontology ...

Publication - hartung - 04/16/2013 - 00:38 - 0 comments - 0 attachments

An evolution-based approach for assessing ontology mappings - A case study in the life sciences

... Proc. of 13. GI-Fachtagung für Datenbanksysteme in Business, Technologie und Web (BTW) ... and more robust ontology mappings. The approach is generic in that it can be applied independently from the utilized match technique. We ...

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

Management of Evolving Semantic Grid Metadata Within a Collaborative Platform

... usually show a high degree of heterogeneity and change in their metadata. We propose a platform for collaborative management and ...

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

Estimating the Quality of Ontology-Based Annotations by Considering Evolutionary Changes

... 6th Intl. Workshop on Data Integration in the Life Sciences (DILS) URL:  ... object properties. Such annotation mappings are utilized in different applications and analysis studies whose results strongly depend on ...

Publication - hartung - 04/15/2013 - 23:38 - 0 comments - 0 attachments

OnEX: Exploring changes in life science ontologies

... Numerous ontologies have recently been developed in life sciences to support a consistent annotation of biological objects, such ... web interface to explore information about changes in current life science ontologies. It is available at ...

Publication - hartung - 04/15/2013 - 23:27 - 0 comments - 1 attachment