Integration of XML Databases by Schema Restructuring

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 integrate different schemas by transforming all the XML schemas to a unique schema. We propose an algorithm to generate a unified query to extract results from this unique schema. Our work is demonstrated using an application of Primary Health Care (PHC) data maintenance system.