These are the refereed proceedings of the Third International Conference on E-Commerce and Web Technologies, EC-Web 2002, held in Aix-en-Provence, France, in September 2002. The 40 revised full papers presented together with two invited contributions were reviewed and selected from more than 100 submissions. The papers are organized in topical sections on auction and negotiation technology, applications, architecture, agents, web query processing, web data integration, security and privacy, recommender systems, emerging standards, business models, and e-payment.

th DEXA 2001, the 12 International Conference on Database and Expert Systems Applications was held on September 3-5, 2001, at the Technical University of Munich, Germany. The rapidly growing spectrum of database applications has led to the establishment of more specialized discussion platforms (DaWaK conference, EC Web conference, and DEXA workshop), which were all held in parallel with the DEXA conference in Munich. In your hands are the results of much effort, beginning with the preparation of the submitted papers. The papers then passed through the reviewing process, and the accepted...