This report presents a formal approach to support schema integration in object-oriented databases. The basis of the approach is a synthetic subclass order to compare classes. Classes are integrated in a natural way using a join operator w.r.t. the subclass order. In contrast with existing literature, our subclass order compares classes not only by their attributes, but also by the behaviour of ...

A huge volume of data is analyzed by organizations to understand their clients and improve services. In many cases, these are stored separately in different database systems need be integrated before being used analysis tools or prediction applications. One the main tasks integration process definition global schema. Defining a schema context NoSQL demanding task since it necessitates dealing w...

Although there have been standardization efforts for more than 10 years, heterogeneity of business process modelling (BPM) schemas is still a big problem for business process management. This paper illustrates the integration problems by discussing the example of BPEL and PNML. It highlights different control flow representations as a major challenge in this area. Using classical schema integra...

Integrated access to distributed data is an important problem faced in many scientific and commercial applications. A data integration system provides a unified view for users to submit queries over multiple autonomous data sources. The queries are processed over a global schema that offers an integrated view of the data sources. Much work has been done on query processing and choosing plans un...

Semantic Validation in Spatio-Temporal Schema Integration This thesis proposes to address the well-know database integration problem with a new method that combines functionality from database conceptual modeling techniques with functionality from logic-based reasoners. We elaborate on a hybrid modeling+validation integration approach for spatio-temporal information integration on the schema le...

Data integration is a central problem in the design of Data Wareshouses and Decision Support Systems. When data passes from the sources of the application-oriented operational environment to the Data Warehouse, possible inconsistencies and redundancies should be resolved, so that the warehouse is able to provide an integrated and reconciled view of data of the organization. Generally speaking, ...

Integrated access to distributed data is an important problem faced in many scientific and commercial applications. A data integration system provides a unified view for users to submit queries over multiple autonomous data sources. The queries are processed over a global schema that offers an integrated view of the data sources. Much work has been done on query processing and choosing plans un...

In the past decade a considerable amount of research has been done on schema integration and translation. Until recently, most of the work has largely neglected the proof of correctness in transforming schemas. Anomalies could arise due to errors in the transformation rules. Invalid transformations can produce incomplete or inconsistent pictures that may cause damage to organisations. In this p...