... these data models motivate the research effort we present in this paper. The goal of this work is to bridge relational and ontological worlds, in order to leverage the efficiency and scalability of relational technologies ...
Publication - krlis1337 - 04/17/2013 - 11:49 - 0 comments - 0 attachments
... 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
... may support automatic and user-transparent integration. In this paper we present X-SOM: an ontology mapping and integration tool. The ...
Publication - krlis1337 - 04/17/2013 - 10:38 - 0 comments - 0 attachments
... 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
... more difficult and have thus far remained unsolved. In this paper, we address this issue by introducing a formal evolution model ... including the Genetic DB Ensembl (410+ schema versions in 9 years), and Wikipedia (240+ schema versions in 6 years). (Database ...
Publication - krlis1337 - 04/17/2013 - 06:49 - 0 comments - 0 attachments
... and (ii) the evolution of its data management core in response to continuously changing application requirements. Most of the ... Manager); by harvesting the recent theoretical advances in this area into a unified framework, ADAM seeks to deliver practical ... an Information System (IS) reflects the changes occurring in the application reality that the IS is modelling: thus, ADAM exploits ...
Publication - krlis1337 - 04/17/2013 - 04:49 - 0 comments - 1 attachment
... would require a coordinated effort not easily achievable in practice. On the other hand, spontaneous communities, based on social ...
Publication - krlis1337 - 04/17/2013 - 04:27 - 0 comments - 0 attachments
... This paper summarizes the results of the X-SOM tool in the OAEI 2007 campaign. X-SOM is an extensible ontology mapper that ...
Publication - krlis1337 - 04/17/2013 - 03:49 - 0 comments - 1 attachment
... maintenance problem that has only been studied in the framework of traditional information systems. However, the problem is likely to be even more severe in web information systems, where open-source software is often developed ...
Publication - krlis1337 - 04/17/2013 - 02:05 - 0 comments - 1 attachment
... the challenge of managing the history of their databases in the face of intense database schema evolution . Our PRIMA system ... method for publishing the history of a relational database in XML, whereby the evolution of the schema and its underlying database are ...
Publication - krlis1337 - 04/17/2013 - 01:38 - 0 comments - 1 attachment
... information systems that is further exacerbated in web information systems, such as Wikipedia and public scientific databases: in these projects based on multiparty cooperation the frequency of database ...
Publication - krlis1337 - 04/17/2013 - 01:38 - 0 comments - 1 attachment
... Modern information systems, and web information systems in particular, are faced with frequent database schema changes, which generate ... to manage such evolution and preserve their history. In this paper, we describe the Pantha Rei Framework designed to provide ...
Publication - krlis1337 - 04/16/2013 - 10:05 - 0 comments - 0 attachments
... Data integration is an old but still open issue in the database research area, where Semantic Web technologies, such as ... find and solve conflicts due to data source heterogeneity. In this paper we present X-SOM: an ontology mapping tool developed within the ...
Publication - krlis1337 - 04/16/2013 - 09:05 - 0 comments - 0 attachments
... causes major usability and scalability problems in preservation,retrieval and querying of databases with intense evolution ... hundreds of schema versions.This scenarios are common in web information systems and scientific databases that frequently accumulate ...
Publication - krlis1337 - 04/16/2013 - 08:05 - 0 comments - 0 attachments
... 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
