Semantic similarity between schema elements is greatly influenced by the context in which the elements are defined and compared. This paper emphasizes on the role of context in establishing semantic similarity between schema elements resulting two different forms of semantic similarity, i.e., shallow similarity and deep similarity. Shallow similarity is based on the inherent meanings of the ele...

The paper describes a prototype tool, named DIXSE, which supports the integration of XML Document Type Definitions (DTDs) into a common conceptual schema. The mapping from each individual DTD into the common schema is used to automatically generate wrappers for XML documents, which conform to a given DTD. These wrappers are used to populate the common conceptual schema thereby achieving data in...

This paper describes how the AutoMed data integration system is being extended to support the integration of heterogeneous XML documents. So far, the contributions of this research have been the development of two algorithms. One restructures the schema describing an XML document into another schema, and the other materialises an integrated schema resulting from the transformation of several so...

Most of the existing work on information integration in the Semantic Web concentrates on resolving schema-level problems. Specific issues of data-level integration (instance coreferencing, conflict resolution, handling uncertainty) are usually tackled by applying the same techniques as for ontology schema matching or by reusing the solutions produced in the database domain. However, data struct...

The paper presents a framework, in which the main concepts of schema and data integration can be specified both semantically and syntactically in an abstract data-model 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 a schema matching and integration syntactically, and introduce a pro...

In this paper we discuss the use and treatment of integrity constraints in the federated database design process. We consider different situations occurring frequently in the schema transformation and schema integration process. Based on that, general rules are given which describe the correct treatment of integrity constraints. Other proposed integration approaches do not consider integrity co...

The MeTHOOD1 approach makes design knowledge tangible that will help to improve conceptual object-oriented schemas. Although some of this important knowledge is available in current literature, it is nearly unusable for designers. Therefore, we propose a catalogue of measurements, heuristics, and transformation rules, and introduce an effective integration schema for these elements. This integr...

When trying to obtain semantical interoperability between different information systems, the integration of heterogeneous information sources is a fundamental task. An important step within this process is the formulation of an integration mapping which specifies how to select, integrate and transform the data stored in the heterogeneous local information sources into a global data store. This ...

This paper presents OpenXView, a model for open XML data integration systems, characterized by the autonomy of users that publish XML data on a common topic. Autonomy implies frequent and unpredictable changes to data and a high degree of structure heterogeneity. The OpenXView model provides an original integration schema, based on a hybrid ontology XML schema structure. We propose solutions fo...

This paper discusses the applicability of schema integration methodology for the integration of XML Schemas for business process modelling. This methodology builds upon the assumption that the integrated schema has to support queries and updates on all underlying local schemas. The heterogeneous schemas of Business Process Execution Language for Web Services (BPEL4WS) and Petri Net Markup Langu...