This book constitutes the refereed proceedings of the 7th East European Conference on Advances in Databases and Information Systems, ADBIS 2003, held in Dresden, Germany in September 2003.The 29 revised full papers presented together with 2 invited contributions were carefully reviewed and selected from 86 submissions. The papers are organized in topical sections on compositional development, advanced query processing, transactions, retrieval from the Web, indexing techniques, active databases and workflows, complex value storage, data mining, formal query semantics, spatial aspects of information systems, XML processing, multimedia data management, information integration, and query containment.