Querying XML databases and their integration is an emerging area in applications related to database management systems. XML documents having similar data may differ in their organization. Hence a single query may not produce uniform results in all the documents. Different queries have to be generated for each of these hierarchies. To avoid this overhead, it is proposed to restructure and integ...

From Proc. ER05

The way how enterprises are organizing their processes is ultimately dictated by the requirements of their markets. Enterprises serving slowly changing market prefer a functional decomposition of their work force into departments with information flows along the hierarchy. Quickly changing markets require quick redefinition of implemented functions and information flows in the distributed infor...

Typically data integration systems have significant gaps of coverage over the global (or mediated) schema they purport to cover. Given this reality, users are interested in knowing exactly which part of their query is supported by the available data sources. This report introduces a set of assumptions which enable users to obtain intensional descriptions of the certain, uncertain and missing an...

Database schema integration is significant not only in building multidatabase systems but also in data warehousing. Metadata, which define schemas, are normally involved in the surrounding issues. And while many of these issues have been addressed in the past, unresolved issues remain. In this paper, we present an approach that not only uses metadata but also uses meta-meta information to make ...

Schema analysis is the process of determining and capturing how individual schema items in diverse databases are related to each other. During this process different types of semantic relationships between schema items in different databases are identified and meaningful cross-links are established. The work presented in this paper concentrates on the issue of determining several types of inter...