... These ontology-based mappings and annotations are used in many applications and analysis tasks. Since biomedical ontologies are ... approaches to keep ontology-based mappings up-to-date in the presence of evolving ontologies. In this article, we survey current ...
Publication - cat - 01/23/2018 - 14:38 - 0 comments - 0 attachments
... Proc. 9th Intl. Conference on Data Integration in the Life Sciences (DILS) Citations ... We propose two approaches for tackling this problem in a largely automatic way: (1) a composition-based adaptation relying on ...
Publication - cat - 01/23/2018 - 14:33 - 0 comments - 0 attachments
... to support data integration and analysis tasks. Changes in the ontologies also require the adaptation of ontology mappings. So far the ... attention albeit ontologies change continuously especially in the life sciences. We therefore analyze how mappings between popular life ...
Publication - hartung - 01/23/2018 - 14:25 - 0 comments - 0 attachments
... to support data integration and analysis tasks. Changes in the ontologies also require the adaptation of ontology mappings. So far the ... attention albeit ontologies change continuously especially in the life sciences. We therefore analyze how mappings between popular life ...
Publication - cat - 01/23/2018 - 14:23 - 0 comments - 0 attachments
... them (eg, search engines and decision support systems) in order to assure an acceptable level of performance. Despite the recent advances in ontology evolution systems, the maintenance of semantic annotations remains an open problem. In this paper, we introduce, based on previous experiments, the main ...
Publication - cat - 01/21/2018 - 12:16 - 0 comments - 0 attachments
... Current view technology supports only static views in the sense that views become undefined and hence obsolete as soon as the ... view definitions to be dynamically evolved to keep them in synch with evolving ISs. We present in this paper a general strategy for the ...
Publication - cat - 04/17/2013 - 12:27 - 0 comments - 1 attachment
... 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
... 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
... 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
... both ontologies and database schemas evolve over time in order to accommodate updated information needs. Once the ontology and the ... of the semantic mapping to reflect the new semantics in the ontology and the schema. In this paper, we propose a formulation of the ...
Publication - erhard - 04/17/2013 - 06:27 - 0 comments - 0 attachments
... database system needs to support changes to its schema in order to facilitate the requirements of new applications and to support interoperability within a multidatabase system. In this paper, we present an approach to schema evolution through changes to ...
Publication - erhard - 04/17/2013 - 05:16 - 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
... application development lifecycle. The two primary schemas in an application, the conceptual model and the persistent database model, must ... model changes and the database and mapping must evolve in kind. We present a technique that, in most cases, allows those evolutions to ...
Publication - cat - 04/16/2013 - 20:38 - 0 comments - 0 attachments
... application development lifecycle. The two primary schemas in an application, the client conceptual object model and the persistent ... automatic evolution of object-relational mapping artifacts in the Microsoft Entity Framework. When starting with a valid mapping between ...
Publication - cat - 04/16/2013 - 20:05 - 0 comments - 1 attachment
... level, require modifications of the data schemas in the course of time. Schema evolution is one of the ways to support schema ... problem for which is also known as schema adaptation. In this paper, a survey of various approaches to solving the outlined problems ...
Publication - erhard - 04/16/2013 - 20:05 - 0 comments - 0 attachments
... 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
... Bonifati and Rahm provides an overview of the ways in which the schema and ontology matching and mapping tools have addressed the ...
Publication - cat - 04/16/2013 - 11:49 - 0 comments - 0 attachments
... 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
... Proc. 3rd ER-Workshop Evolution and Change in Data Management (ECDM 2004), LNCS 3289 ... 1 - 9 One of the main challenges in data integration systems is the maintenance of the mappings between the ...
Publication - cat - 04/16/2013 - 08:49 - 0 comments - 0 attachments
... Proceedings of the Workshop on Evolution and Change in Data Management (ECDM 2006), LNCS 4231, pp. 237-246 ... problems related to database evolution is how to reflect in the data level the changes that have occurred in the conceptual schema of ...
Publication - jlloret - 04/16/2013 - 06:05 - 0 comments - 0 attachments
... 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
... administrators are called on to write complex mappings in which they specify in tedious detail how the data is to be transformed. Even once deployed, ...
Publication - cat - 04/16/2013 - 02:38 - 0 comments - 0 attachments
... construction and maintenance of data warehouses (views) in large-scale environments composed of numerous distributed and evolving ... the problem of schema changes of ISs, while previous work in this area, such as incremental view maintenance, has mainly dealt with data ...
Publication - cat - 04/16/2013 - 02:27 - 0 comments - 0 attachments
... 252.55 KB An important issue in data integration is the integration of semantically equivalent but ... source restructuring for such databases have been proposed in the literature, such as the SQL extension SchemaSQL. However, the issue of incremental maintenance of views defined in such languages remains an open problem. We present an incremental view ...
Publication - cat - 04/15/2013 - 22:27 - 0 comments - 1 attachment
... 918.38 KB revious works in data integration can be classified according to the approach used to define ... limit of this approach is the management of the evolutions in the system. Indeed, each time a change occurs at the source schema level, ...
Publication - cat - 04/15/2013 - 21:16 - 0 comments - 1 attachment
