Database and Expert Systems Applications : 11th International Conference DEXA 2000 London UK September 4–8 2000 Proceedings This book constitutes the refereed proceedings of the 11th International Conference on Database and Expert Systems Applications DEXA 2000 held in London in September 2000. The 92 revised full papers presented together with one invited paper were carefully reviewed and selected from a total of 183 submissions. The book offers topical sections on object oriented and relational databases multimedia databases fundamentals workflow management systems database security XML advanced databases queries knowledge based systems data warehouses database design and analysis data mining and knowledge discovery web database systems indexing and distributed database systems