VLDB COPYRIGHT TRANSFER FORM Proceedings and Presentation Slides of the 31st International Conference on Very Large Databases Trondheim, Norway, August 30 - September 2, 2005 Copyright of the article entitled (as it appears in the final version): Authored by (listed in the same order as it appears in the final version): If the article has been written in the course of employment by a Government agency so that no copyright exists, please check here [ ]. If not, the undersigned hereby grants and assigns exclusively to the VLDB Endowment all rights of copyright in this contribution, and the exclusive right to print, publish, and sell the work throughout the world in all languages, with the following exception: The author(s) reserve(s) the following: (1) All other rights such as patent rights. (2) The right to use all or part of this article in future works of their own, such as lectures, press releases, reviews or textbooks. In the case of republication of the whole article or parts thereof in journals or reprint publications by a third party, written permission must be obtained from the VLDB Endowment to be signed by at least one of the authors (who agrees to inform the others, if any) or, in case of a "work made for hire," by the employer. Furthermore, the undersigned grants and assigns to the VLDB Endowment the right to print and publish the conference presentation slides that accompany the article. The rights mentioned above include permission to include the article and presentation slides in the SIGMOD Anthology. In the case of an article commissioned by another person or organization or written as part of duties as an employee, an authorized representative of the commissioning organization or employer should sign and include his/ her position/title. If signed by only one author, it shall be assumed that he/she is authorized to execute this transfer of copyright on behalf of all the authors of the article referred to above. Signatures print names date