This book constitutes the refereed proceedings of the 26th British National Conference on
Databases BNCOD 26 held in Birmingham UK in July 2009.The 12 revised full papers 2 short
papers and 5 poster papers presented together with 2 keynote talks 2 tutorial papers and
summaries of 3 co-located workshops were carefully reviewed and selected from 33 submissions.
The papers are organized in topical sections on data integration warehousing and privacy
alternative data models querying and path queries and XML data mining and privacy data
integration stream and event data processing and query processing and optimisation.
