Archived with thanks to Proceedings of the VLDB Endowment. This  work  is  licensed  under  the  Creative  Commons  Attribution-NonCommercial-NoDerivatives 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/. For any use beyond those covered by this license, obtain permission by emailinginfo@vldb.org. Copyright is held by the owner/author(s). Publication rights licensed to the VLDB Endowment.
Except where otherwise noted, this item's license is described as Archived with thanks to Proceedings of the VLDB Endowment. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/. For any use beyond those covered by this license, obtain permission by emailinginfo@vldb.org. Copyright is held by the owner/author(s). Publication rights licensed to the VLDB Endowment.