Preface for ECDM 2006
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Change is a fundamental but sometimes neglected aspect of information and database systems. The management of evolution and change and the ability for database, information and knowledge-based systems to deal with change are an essential component in developing and maintaining truly useful systems. Many approaches to handling evolution and change have been proposed in various areas of data management and this forum seeks to bring together researchers and practitioners both from more established areas and those from emerging areas to look at this issue. The fourth ECDM workshop (the first three ECDM workshops were held with ER 1999 in Paris, France, with ER 2002 in Tampere, Finland, and with ER 2004 in Shanghai, China) dealt with the manner in which change can be handled, and the semantics of evolving data and data structure in computer-based systems, including databases, data warehouses and Web-based information systems.