... Schema versioning provides a mechanism for handling change in the structure of database systems and has been investigated widely, both in the context of static and temporal databases. With the growing interest in ...
Publication - cat - 01/19/2018 - 18:46 - 0 comments - 0 attachments
... Although there is already a lot of research done in this area, there are still many open questions. In this paper we try to classify the problems that may arise into a common ...
Publication - admin - 07/26/2016 - 16:40 - 0 comments - 0 attachments
... KB Schema matching is a critical step in many applications, such as XML message mapping, data warehouse loading, and schema integration. In this paper, we investigate algorithms for generic schema matching, ...
Publication - admin - 04/17/2013 - 10:49 - 0 comments - 1 attachment
... cost and effort required for maintaining the federation in a consistent state after its launch. If only human intervention is to be ... of change at both local and federal conceptual levels in interoperating database systems. The basis for the model is the exploitation ...
Publication - cat - 04/17/2013 - 10:05 - 0 comments - 0 attachments
... The past two decades have seen increasing sophistication in software work. Now and in the future, the work of both practitioners and researchers would be helped ...
Publication - erhard - 04/17/2013 - 09:16 - 0 comments - 0 attachments
... as a standard format for data representation on the web. In many application domains, specific document type definitions (DTDs) are ... a semantically agreed-upon structure of the XML documents. In XML context, these structural definitions serve as schemata. However, both ...
Publication - cat - 04/17/2013 - 09:16 - 0 comments - 0 attachments
... how such stability should be observed and measured in the operational business environment with evolving information needs and ...
Publication - cat - 04/17/2013 - 04:16 - 0 comments - 1 attachment
... 210.34 KB Information seeking is the process in which human beings recourse to information resources in order to increase their level of knowledge with respect to their goals. In ...
Publication - avigal - 04/17/2013 - 02:27 - 0 comments - 1 attachment
... must thus be created manually on a case-by-case basis. In this paper, we explore the problem of how to automate the transformation of ...
Publication - cat - 04/16/2013 - 22:27 - 0 comments - 1 attachment
... 191.63 KB Schema matching is a basic problem in many database application domains, such as data integration, Ebusiness, data warehousing, and semantic query processing. In current implementations, schema matching is typically performed manually, ...
Publication - cat - 04/16/2013 - 22:16 - 0 comments - 1 attachment
... refers to changes of schema elements already stored in the database. In this paper, we give an overview of schema evolution operations supported by ...
Publication - cat - 04/16/2013 - 20:49 - 0 comments - 1 attachment
... Views over databases have regained attention in the context of data warehouses, which are seen as materialized views. In this setting, efficient view maintenance is an important issue, for which ...
Publication - cat - 04/16/2013 - 19:38 - 0 comments - 1 attachment
... A subtle problem of schema integration is considered in its general form, not bound to any particular category of schemas. The ... theory are established that apply to integrity problems in schema integration. The theory is illustrated by a particular category of ...
Publication - huliganka - 04/16/2013 - 19:27 - 0 comments - 1 attachment
... 122.04 KB Researchers in the ontology-design field have developed the content for ontologies in many domain areas. Recently, ontologies have become increasingly common on ... WorldWide Web where they provide semantics for annotations in Web pages. This distributed nature of ontology development has led to a ...
Publication - admin - 04/16/2013 - 17:05 - 0 comments - 1 attachment
... sources through a single mediated schema. A key bottleneck in building such systems has been the laborious manual construction of semantic ... learner exploits a different type of information either in the source schemas or in their data. Once the learners have been trained, ...
Publication - admin - 04/16/2013 - 16:38 - 0 comments - 1 attachment
... formats. There are two essential ideas. Firstly, changes in the formats of documents are represented as stepwise transformations on the ...
Publication - cat - 04/16/2013 - 14:16 - 0 comments - 1 attachment
... virtual database systems are suitable for environments in which the set of member information sources is small and stable. ... new information sources into the virtual database. In this paper we describe a system, called Autoplex, which uses machine ... the virtual database system by human experts as done in standard virtual database systems . Autoplex learns the features of ...
Publication - admin - 04/16/2013 - 13:49 - 0 comments - 1 attachment
... 51.67 KB Mediators – used in federated information systems – provide a homogeneous read-only access ... adapt correspondences consistently to evolving schemas. In this paper we propose a formalized schema evolution mechanism for federated ...
Publication - cat - 04/16/2013 - 13:05 - 0 comments - 1 attachment
... of heterogeneous data transformation and integration. In Clio, we have collected together a powerful set of data management techniques that have proven invaluable in tackling these difficult problems. In this paper, we present the underlying ...
Publication - massmann - 04/16/2013 - 10:38 - 0 comments - 1 attachment
... views that determine its schema and its content in terms of the schema and the content of the data sources. DW applications ... against the cost of maintaining the materialized views. In an evolving DW application, new queries need to be answered by the DW. An ...
Publication - cat - 04/16/2013 - 04:49 - 0 comments - 1 attachment
... Proc. Research Issues in Data Engineering (RIDE) URL: ...
Publication - cat - 04/16/2013 - 03:38 - 0 comments - 0 attachments
... of ontologies, the problem of overlapping knowledge in a common domain becomes critical. We propose the new method FCA–MERGE ...
Publication - cat - 04/16/2013 - 03:27 - 0 comments - 1 attachment
... integrity of and dependencies between product data created in many different engineering applications. Most of these applications support ... of drawings and documents. Consequently, federations in engineering environments have to provide version management on their global ...
Publication - cat - 04/16/2013 - 01:27 - 0 comments - 0 attachments
... are becoming increasingly prevalent and important in a wide range of e-commerce applications. E-commerce applications are using ...
Publication - cat - 04/16/2013 - 01:16 - 0 comments - 0 attachments
... changes, adaptations to different tasks, or changes in the conceptualization require modifications of the ontology. The evolution ... of ontology versioning. Inspired by the work done in database schema versioning and program interface versioning, it will also ...
Publication - cat - 04/16/2013 - 01:05 - 0 comments - 0 attachments
