In this paper, we further develop a proposed layered approach for the Semantic Web. Our objective is to build a specific solution to the problem of providing data interoperability among different databases, so as to allow for schematic data integration. In particular, we solve the problem of translating queries on a database schema into queries on another database schema, using their relationsh...

In contrast to three schema levels in centralized objectbases, a reference architecture for federated objectbase systems proposes five levels of schemata. This paper investigates the fundamental mechanisms to be provided by an object model to realize the processors transforming between these levels, namely schema ezlension, s&emu filtering, and schema composition. It is shown, how composition a...

abstract objectives: this study aimed to determine the effectiveness of schema therapy in the treatment of social anxiety disorder.method: the research method was a single-case experimental design with multiple baselines. five patients were selected by purposive sampling method. they were treated in 20 individual sessions according to young's schema therapy model. the data were collected by tes...

The process of transforming and integrating XML data involves resolving the syntactic, semantic and schematic heterogeneities that the data sources present. Moreover, there are a number of different application settings in which such a process could take place, such as centralised or peer-to-peer settings, each of which needs to be considered separately. In this thesis, we investigate the probl...

In data management, and in particular in data integration, data exchange, query optimization, and data privacy, the notion of view plays a central role. In several contexts, such as data integration, data mashups, and data warehousing, the need arises of designing views starting from a set of known correspondences between queries over different schemas. In this paper we deal with the issue of a...

Semi-structured data play an increasing role in the development of the Web through the useof XML. However, the management of semi-structured data poses speci c problems because semi-structured data, contrary to classical databases, do not rely on a prede ned schema. The schemaof a document is contained in the document itself and similar documents may be represented bydi erent sc...

The integration of information originating from multiple heterogeneous data sources is required by many modern information systems. In this context, the applications’ needs are described by a target schema and the way instances of the target schema are derived from the data sources is expressed through mappings. A mapping describes the transformation and the integration of the source instances ...

This paper introduces a logical schema for the integration of software process modelling and software measurement. The schema promotes a common understanding of concepts and terminology, serving as a bridge across the fields of process modelling and software metrics. It presents a formal unified view of the major information entities and their inter-relationships. The schema is designed to be g...

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, outside of any particular data model or application. We first present a taxonomy for past solutions, showing that a rich range of techniques is available. We then propose a new algorithm, Cupid...

The paper presents a mathematical framework, in which the main concepts of schema and data integration can be specified both semantically and syntactically in an abstract datamodel independent way. We first define what are schema matching and integration semantically, in terms of sets of instances and mappings between them. We also define schema matching and integration syntactically, and intro...