Schema Evolution publication categorizer

... that can be made by querying a database system, and, in particular, look at which observations are valid for a particular database ... being merged. However we establish that one cannot, in general, find a meaningful binary merging operator which is associative, ...

Publication - huliganka - 07/03/2022 - 23:42 - 0 comments - 0 attachments

... this challenge that have received considerable attention in recent years are data exchange and data integration. The study of data ... database schemas. Schema mappings are typically expressed in declarative languages based on logical formalisms and are chosen with two ...

Publication - cat - 04/17/2013 - 11:16 - 0 comments - 1 attachment

... hierarchies. This procedure assists a designer in defining a global view which is a view over multiple databases. The small ... levels. The merging procedure applies the rules in two phases. In the connecting phase, the input generalization hierarchies are connected to ...

Publication - cat - 04/17/2013 - 09:27 - 0 comments - 1 attachment

... “model” is today considered as a promising technology in domains such as data and software engineering. In the field of model engineering, models are now viewed as firts-class ...

Publication - huliganka - 04/17/2013 - 00:49 - 0 comments - 1 attachment

... 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

... 10 - 49 In this article we present extensional mappings, that are based on second order tuple generating dependencies between models in our Generic Role-based Metamodel GeRoMe. Our mappings support data ...

Publication - dk - 04/16/2013 - 22:27 - 0 comments - 0 attachments

... measures have been proposed, completeness and minimality. In this paper, we extend these metrics for an expert integrated schema. Then, ...

Publication - cat - 04/16/2013 - 12:27 - 0 comments - 1 attachment

... of schema mappings is laborious and time-consuming, even in the presence of tools that facilitate this development. At the same time, ... the adaptation and reuse of the existing schema mappings in the context of the new schemas is an important research problem. In ...

Publication - cat - 04/16/2013 - 12:16 - 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

... 10 - 49 In order to compute intelligent answers to complex questions, using the vast amounts of information existing in the Web, computers have (1) to translate such knowledge, typically from text ...

Publication - cat - 04/16/2013 - 09:49 - 0 comments - 0 attachments

... The proliferation of ontologies and taxonomies in many domains increasingly demands the integration of multiple such ...

Publication - cat - 04/16/2013 - 08:38 - 0 comments - 1 attachment

... from the schema matching process, that is, the weights and in some cases the directions that are associated with the correspondences. In this paper, we propose a more automatic approach to schema integration that ...

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

... data, thus offering a way to deal with the heterogeneity in the sources. In this paper, we develop a method and a design tool that provide: 1) ...

Publication - cat - 04/16/2013 - 04:05 - 0 comments - 1 attachment

... uniformly constraints and queries along with structures. In addition, our formalism captures schema transformations between different ...

Publication - cat - 04/16/2013 - 03:49 - 0 comments - 0 attachments

... complete prototype of a generic model-management system, in which high-level operators are used to manipulate models and mappings ...

Publication - admin - 04/16/2013 - 03:27 - 0 comments - 1 attachment

... need to interrelate different life science ontologies in order to facilitate data integration or semantic data analysis. Ontology ... linguistic and structural similarity of their concepts. In this paper we investigate an indirect computation of ontology mappings that ...

Publication - hartung - 04/16/2013 - 02:05 - 0 comments - 0 attachments

... 10 - 49 In this chapter, three semantics-based schema conversion methods are presented: ...

Publication - cat - 04/16/2013 - 01:05 - 0 comments - 0 attachments

... by a set of intermediate model meta-classes (organized in the form of a directed acyclic graph (DAG) to achieve extensibility y), ... of these meta-classes are used to describe a schema in a given data model. The proposed approach supports dynamic meta-schema ...

Publication - huliganka - 04/16/2013 - 00:49 - 0 comments - 0 attachments

... number of product catalogs from different sources. In order to help users find products efficiently, Internet shops provide ... to systematically support structured operations. In this paper, we present an extended catalog model whose purpose is to ... with browsing, searching, and downloading capabilities in order to facilitate catalog sharing and interoperability. In addition, we ...

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

... of a general framework for metadata management. In fact, during the last years three alternative notions of inversion for ... practical applicability. First, these algorithms work in exponential time and produce inverse mappings of exponential size. Second, ...

Publication - hartung - 04/15/2013 - 23:38 - 0 comments - 1 attachment

... Venue:  In Sixth IFIP TC-2 Working Conf. on Data Semantics (DS-6), Atlanta, Georgia, ... 10 - 49 In this paper we study the problem of translating schemes between different ...

Publication - huliganka - 04/15/2013 - 23:16 - 0 comments - 0 attachments

... if their categorizations have some semantic overlap. In this paper, we propose a new approach, co-bootstrapping, to enhance the ... with real-world web data show substantial improvements in the performance of taxonomy integration. (Catalog matching, Merge) ...

Publication - cat - 04/15/2013 - 23:05 - 0 comments - 1 attachment

... measure derived from linguistic cues. We present in this paper a linguistic information based approach to ontology merging and ... based on two observations: majority of concept names used in ontology are composed of multiple-word combinations, and ontologies designed ...

Publication - cat - 04/15/2013 - 22:38 - 0 comments - 0 attachments

... 10 - 49 In this paper, we propose a multi-strategic matching and merging approach to ...

Publication - cat - 04/15/2013 - 22:16 - 0 comments - 0 attachments

... for ontology mapping and merging are very restricted in term of resolving mismatches or proposing accurate matches with no or ... these systems do not consider all information available in the semantic knowledge of the ontologies. In this paper we are proposing a ...

Publication - cat - 04/15/2013 - 21:05 - 0 comments - 0 attachments