... applications building on Semantic Web technology. In this paper we first present the conceptual architecture underlying ...
Publication - cat - 06/15/2023 - 14:51 - 0 comments - 0 attachments
... 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
... problems. For instance, incorporating a new program in a legacy database application can create an integrity mismatch, since the ... different (e.g. standard file model versus OO model). In addition, neither the legacy DBMS (too weak to address integrity issues ...
Publication - huliganka - 04/17/2013 - 12:05 - 0 comments - 1 attachment
... schema evolution, standard information systems currently in use raise challenging evolution problems. This paper examines database ... and describe a CASE tool that can assist developers in their task of system evolution. We illustrate our approach with Biomaze, a ...
Publication - huliganka - 04/17/2013 - 11:38 - 0 comments - 1 attachment
... approach for expressing and tracking changes in rule-based programs in the course of program evolution. To this end, we design an operator suite ...
Publication - cat - 04/17/2013 - 10:27 - 0 comments - 0 attachments
... 10 - 49 In this paper we present a formal model for the support of temporal schema versions in object-oriented databases. Its definition is partially based on a generic ...
Publication - fgrandi - 04/17/2013 - 08:49 - 0 comments - 0 attachments
... of integrated Web data. One of the main challenges in these systems is to deal with the volatile and dynamic nature of Web sources. In this work we address the effects of adding/removing/changing Web sources and ...
Publication - cat - 04/17/2013 - 05:27 - 0 comments - 0 attachments
... describe entities of domains, such as genes and proteins in life sciences. Their increasing size and the high frequency of updates resulting in a large set of ontology versions necessitates efficient management and ... (Compose, Diff, Journal, Mapping evolution, OA in the Life Sciences, Ontology evolution, Research paper, Versioning) ...
Publication - hartung - 04/16/2013 - 23:05 - 0 comments - 0 attachments
... 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
... engineers (designers, developers) still have to face in their everyday work is the evolution of working database systems. As a step for the solution of this problem in this paper we propose MeDEA, which stands for Metamodel-based Database ...
Publication - jlloret - 04/16/2013 - 14:49 - 0 comments - 0 attachments
... 323.43 KB Database transformations arise in many different settings including database integration, evolution of ... paper surveys approaches that have been taken to problems in these settings, assesses their strengths and weaknessesd develops ...
Publication - erhard - 04/16/2013 - 11:38 - 0 comments - 1 attachment
... 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
... 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
